Update targeted ICASSP 2027 manuscript and results

2026-09-24 11:07:48 +08:00
parent 6de4873b45
commit 36b63bc283
11 changed files with 536 additions and 227 deletions
--- a/manuscript/targeted/Makefile
+++ b/manuscript/targeted/Makefile
@@ -2,15 +2,16 @@ LATEXMK ?= latexmk

 .PHONY: all clean figure

-all: figures/system_overview.pdf
+all: figures/system_overview_onecolumn.pdf figures/task_overview.pdf
 	mkdir -p build
 	$(LATEXMK) -pdf -interaction=nonstopmode -halt-on-error -outdir=build main.tex

-figure: figures/system_overview.pdf
+figure: figures/system_overview_onecolumn.pdf figures/task_overview.pdf

-figures/system_overview.pdf: figures/system_overview.tex
+figures/%.pdf: figures/%.tex
 	$(LATEXMK) -pdf -interaction=nonstopmode -halt-on-error -outdir=figures $<

 clean:
 	$(LATEXMK) -C -outdir=build main.tex
-	$(LATEXMK) -c -outdir=figures figures/system_overview.tex
+	$(LATEXMK) -c -outdir=figures figures/system_overview_onecolumn.tex
+	$(LATEXMK) -c -outdir=figures figures/task_overview.tex
--- a/manuscript/targeted/README.md
+++ b/manuscript/targeted/README.md
@@ -14,8 +14,21 @@ that is the strongest complete story supported by archived evidence:
 - a three-seed causal oracle shows that timely visible-participant activity is
  informative, while identity continuity is not currently necessary.

+The draft also reflects two seed-0 exploratory screens reported in
+`../main/main.tex`: no-box full-frame F3 (Table 1) and a global-only
+chunk-construction comparison (Table 2, panel B). Neither supplies
+matched visual-motion evidence, endpoint gains, or the pending T/C factorial.
+The result directories cited by the main draft for F3 and its G+A recheck
+are absent from this checkout, so their underlying logs have not been
+independently audited here.
+
 No semantic ENTRY/YIELD, addressee, online-detector, or real-time-throughput
 claim is made. The deployable matrix is explicitly single-seed and exploratory.
+The six-group L/T/C/B/H-Q/S table remains in `main.tex` as an
+**illustrative, unmeasured planning aid**, excluded from the page-limited
+PDF. Its directional statements are hypotheses and falsifiers, not EasyCom
+scores. Replace or remove every row after the corresponding experiment,
+including results that contradict the working story.

 ## Build

@@ -24,13 +37,25 @@ cd manuscript/targeted
 make
 ```

-The editable sources are `main.tex`, `references.bib`, and
-`figures/system_overview.tex`. Generated files are written to `build/`.
+The editable sources are `main.tex`, `references.bib`,
+`figures/task_overview.tex`, and `figures/system_overview_onecolumn.tex`.
+Generated LaTeX files are written to `build/`.

-The build currently uses the repository's unmodified ICASSP 2026 style assets
-as a compatibility preview. Replace the `template_dir` in `latexmkrc` with the
-official ICASSP 2027 author kit before submission and repeat all page/layout
-checks.
+The preview is four technical pages plus a reference-only fifth page. Both
+the task diagram (Fig. 1) and the system diagram (Fig. 2) occupy one column.
+The current PDF reserves five numbered result tables: measured deployable
+and oracle screens share Table 1; L controls extend its first panel. The
+unmeasured T/C matrix and a separate measured chunk screen share Table 2;
+B, H, and S occupy Tables 3--5. Pending cells are explicitly unmeasured.
+Figure 3 is an H/Q case slot, not a selected or measured example. Its
+cutoff-marked timelines must be inserted only after the slice protocol and
+case-selection rule are frozen. The single-column system figure is generated
+from figures/system_overview_onecolumn.tex; the earlier full-width source
+is retained for comparison.
+
+The build uses the repository's ICASSP 2027 LaTeX assets in
+`../ICASSP2027_Paper_Templates/`, selected by `latexmkrc`. The supplied
+`spconf.sty` and `IEEEbib.bst` match the 2026 copies.

 ## Evidence sources

--- a/manuscript/targeted/REVIEWER_REPORT.md
+++ b/manuscript/targeted/REVIEWER_REPORT.md
@@ -78,10 +78,23 @@ the science.
   causal active-speaker/floor estimator and require correct-time evidence to
   beat delayed, removed, and capacity-matched controls. Otherwise retain the
   honest audio-local paper and remove visual-method language.
-5. Rebuild with the official 2027 kit, keep technical content within four
-   pages, put only references on an optional fifth page, and retain the IEEE
-   AI-assisted drafting disclosure.
+5. Recheck the four-page technical limit after inserting results. The current
+   build uses the 2027 kit and puts only references on page five; retain the
+   IEEE AI-assisted drafting disclosure.

 Passing gates 1--3 would support a solid ICASSP empirical paper. Passing gate
 4 with a meaningful matched-recall behavior gain would support the stronger
 method paper originally envisioned.
+
+## Review 4: expanded five-page working preview
+
+The layout now uses four pages for technical content and a fifth page for
+references only. The Introduction includes a causal task timeline; the
+method figure separates deployable inputs from privileged audit labels. The
+results presentation has measured main/oracle tables and a clearly labeled
+six-group **illustrative scenario** with explicit falsifiers. This improves
+readability and makes the intended experimental logic reviewable, but it does
+not raise the scientific verdict above borderline: L/T/C/B/H-Q/S values and
+full-pipeline efficiency remain unmeasured, and the scenario cannot be cited
+as evidence. Re-review after gates 1--4 and replacement of the scenario table
+with actual per-seed/per-session results.
--- a/manuscript/targeted/figures/system_overview.pdf
+++ b/manuscript/targeted/figures/system_overview.pdf
--- a/manuscript/targeted/figures/system_overview.tex
+++ b/manuscript/targeted/figures/system_overview.tex
@@ -1,92 +1,71 @@
 \documentclass[tikz,border=2pt]{standalone}
 \usepackage{amsmath}
-\usetikzlibrary{arrows.meta,calc,positioning}
+\usetikzlibrary{arrows.meta,positioning,calc}
 \definecolor{navy}{HTML}{19324A}
 \definecolor{bluefill}{HTML}{EAF1F7}
-\definecolor{teal}{HTML}{0B7A75}
-\definecolor{tealfill}{HTML}{E5F4F2}
-\definecolor{orange}{HTML}{C96A12}
+\definecolor{teal}{HTML}{087F78}
+\definecolor{tealfill}{HTML}{E6F4F1}
+\definecolor{orange}{HTML}{B85D0F}
 \definecolor{orangefill}{HTML}{FFF0DF}
-\definecolor{purple}{HTML}{6E4B8B}
-\definecolor{purplefill}{HTML}{F1EBF6}
-\definecolor{grayline}{HTML}{697782}
+\definecolor{grayline}{HTML}{687782}
 \begin{document}
 \begin{tikzpicture}[
- font=\sffamily\scriptsize, >=Latex,
- flow/.style={-{Latex[length=1.7mm]},line width=0.65pt,draw=navy},
+ font=\sffamily\scriptsize,>=Latex,
+ flow/.style={-{Latex[length=1.6mm]},line width=.65pt,draw=navy},
 localflow/.style={flow,draw=teal},
- auditflow/.style={flow,draw=purple,dashed},
- box/.style={draw=navy,rounded corners=1.5pt,line width=0.65pt,
- fill=bluefill,minimum height=8mm,align=center,inner sep=2.2pt},
- localbox/.style={box,draw=teal,fill=tealfill},
- auditbox/.style={box,draw=purple,fill=purplefill,dashed},
- note/.style={font=\sffamily\tiny,text=grayline,align=center}
-]
+ block/.style={draw=navy,fill=bluefill,rounded corners=1.6pt,
+   line width=.6pt,minimum height=8.5mm,align=center,inner sep=2pt},
+ local/.style={block,draw=teal,fill=tealfill},
+ hint/.style={font=\sffamily\tiny,text=grayline,align=center}]
 \node[anchor=west,font=\sffamily\scriptsize\bfseries,text=navy]
- at (-0.1,3.2) {Prediction path: integrated history plus explicit recent evidence};
-\node[align=center,text=navy] (av) at (0.7,2.45)
- {observed full-scene\\audio--video prefix};
-\node[box] (omni) at (3.25,2.45) {frozen Qwen2.5-Omni\\8-s maximum context};
-\node[box] (global) at (5.95,2.45) {last-four-layer\\global state $G_n$};
-\node[align=center,text=teal] (audio) at (0.7,1.23)
- {most recent 1-s\\mixed audio};
-\node[localbox] (ae) at (3.25,1.23) {frozen audio encoder\\valid-token mean};
-\node[localbox] (ap) at (5.95,1.23) {local projection\\$\widetilde A_n$ + validity};
-\node[align=center,text=teal] (video) at (0.7,0.02)
- {recent causal\\person crops};
-\node[localbox,dashed] (ve) at (3.25,0.02)
- {frozen visual encoder\\crop / person pooling};
-\node[localbox,dashed] (vp) at (5.95,0.02)
- {optional projection\\$\widetilde V_n$ + validity};
-\node[box,minimum width=21mm] (fusion) at (8.65,1.23)
- {cutoff-aligned\\fusion head};
-\node[box,minimum width=24mm] (out) at (11.55,1.23)
- {$10\!\times\!3$ activity forecast\\0.2--2.0 s};
-\draw[flow] (av) -- (omni);
-\draw[flow] (omni) -- (global);
+ at (0,3.12) {Deployable prediction path at the same causal cutoff $t_n$};
+\node[block,minimum width=25mm] (history) at (1.35,2.26)
+ {observed AV history\\8-s maximum budget};
+\node[block,minimum width=25mm] (omni) at (4.15,2.26)
+ {frozen Omni Thinker\\last-four-layer state};
+\node[local,minimum width=25mm] (audio) at (1.35,1.13)
+ {last 1-s mixed audio\\cropped at $t_n$};
+\node[local,minimum width=25mm] (ae) at (4.15,1.13)
+ {frozen audio encoder\\valid-token mean};
+\node[local,dashed,minimum width=25mm] (video) at (1.35,0)
+ {optional recent frames\\provided person boxes};
+\node[local,dashed,minimum width=25mm] (ve) at (4.15,0)
+ {frozen visual encoder\\pooled person tokens};
+\node[block,minimum width=20mm] (head) at (7.15,1.13)
+ {normalized features\\+ validity $\to$ MLP};
+\node[block,minimum width=26mm] (out) at (10.4,1.13)
+ {$10\times3$ forecast\\0.2--2.0-s horizons};
+\draw[flow] (history) -- (omni);
 \draw[localflow] (audio) -- (ae);
-\draw[localflow] (ae) -- (ap);
 \draw[localflow,dashed] (video) -- (ve);
-\draw[localflow,dashed] (ve) -- (vp);
-\draw[flow] (global.east) -- ++(0.30,0) |- (fusion.north);
-\draw[localflow] (ap) -- (fusion);
-\draw[localflow,dashed] (vp.east) -- ++(0.30,0) |- (fusion.south);
-\draw[flow] (fusion) -- (out);
-\node[note] at (11.45,0.18)
- {background / invisible wearer / aggregate others};
-
-\draw[grayline,line width=0.45pt] (-0.1,-0.62) -- (12.9,-0.62);
+\draw[flow] (omni.east) -- ++(.38,0) |- (head.north);
+\draw[localflow] (ae) -- (head);
+\draw[localflow,dashed] (ve.east) -- ++(.38,0) |- (head.south);
+\draw[flow] (head) -- (out);
+\node[hint,text=navy] at (10.4,.17)
+ {background / wearer / aggregate others};
+\draw[draw=grayline,line width=.45pt] (0,-.62)--(11.85,-.62);
 \node[anchor=west,font=\sffamily\scriptsize\bfseries,text=navy]
- at (-0.1,-0.94) {Strictly causal stream at cutoff $t_n$};
-\node[anchor=east,text=navy] at (2.05,-1.62) {Omni media};
-\foreach \a/\b in {2.3/3.85,3.85/5.4,5.4/6.95} {
- \draw[fill=bluefill,draw=navy,line width=0.55pt]
- (\a,-1.84) rectangle (\b,-1.40);
- \node[text=navy,font=\sffamily\tiny] at ({(\a+\b)/2},-1.62) {completed 2 s};
+ at (0,-.94) {Bounded streaming state: no media after $t_n$};
+\node[anchor=east,text=navy] at (1.9,-1.62) {Omni blocks};
+\foreach \a/\b in {2.12/3.55,3.55/4.98,4.98/6.41} {
+ \draw[draw=navy,fill=bluefill,line width=.55pt]
+  (\a,-1.84) rectangle (\b,-1.39);
+ \node[font=\sffamily\tiny,text=navy] at ({(\a+\b)/2},-1.615) {completed};
 }
-\draw[fill=orangefill,draw=orange,line width=0.65pt]
- (6.95,-1.84) rectangle (8.45,-1.40);
-\node[text=orange,font=\sffamily\tiny] at (7.70,-1.62) {observed tail};
-\draw[dashed,draw=orange,line width=0.75pt]
- (8.45,-2.95) -- (8.45,-1.10);
-\node[anchor=south,text=orange,font=\sffamily\tiny\bfseries]
- at (8.45,-1.10) {cutoff $t_n$};
-\node[note,anchor=west] at (8.85,-1.62)
- {replay completed payloads; recompute only\\the temporary tail; exclude future media};
-\node[anchor=east,text=teal] at (2.05,-2.31) {local evidence};
-\draw[draw=teal,line width=1.8pt] (7.65,-2.31) -- (8.45,-2.31);
-\node[note,anchor=west,text=teal] at (8.85,-2.31)
- {one-second causal window, refreshed every 200 ms};
-\node[anchor=east,text=navy] at (2.05,-2.86) {decision grid};
-\draw[draw=navy,line width=0.6pt] (2.3,-2.86) -- (8.45,-2.86);
-\foreach \x in {2.42,2.58,...,8.34} {
- \draw[draw=navy,line width=0.5pt] (\x,-2.95) -- (\x,-2.77);
-}
-
-\node[auditbox,minimum width=42mm] (oracle) at (11.02,-2.78)
- {analysis only: past visible-person activity\\aggregate / per-person / delayed / shuffled};
-\draw[auditflow] (oracle.north) -- ++(0,0.32) -| (fusion.south);
-\node[note,text=purple] at (11.02,-3.35)
- {privileged information audit; never a deployable model input};
+\draw[draw=orange,fill=orangefill,line width=.65pt]
+ (6.41,-1.84) rectangle (7.85,-1.39);
+\node[font=\sffamily\tiny,text=orange] at (7.13,-1.615) {observed tail};
+\draw[draw=orange,dashed,line width=.7pt] (7.85,-2.43)--(7.85,-1.12);
+\node[anchor=south,font=\sffamily\tiny\bfseries,text=orange]
+ at (7.85,-1.12) {$t_n$};
+\node[hint,anchor=west] at (8.16,-1.62)
+ {reuse completed payloads;\\recompute temporary tail only};
+\node[anchor=east,text=teal] at (1.9,-2.33) {local 1 s};
+\draw[draw=teal,line width=2pt] (7.14,-2.33)--(7.85,-2.33);
+\node[hint,anchor=west,text=teal] at (8.16,-2.33)
+ {recent evidence refreshed every 200 ms};
+\node[hint,anchor=west] at (2.12,-2.74)
+ {Privileged past-activity labels are evaluated separately as an information audit; they never enter this prediction path.};
 \end{tikzpicture}
 \end{document}
--- a/manuscript/targeted/figures/system_overview_onecolumn.pdf
+++ b/manuscript/targeted/figures/system_overview_onecolumn.pdf
--- a/manuscript/targeted/figures/system_overview_onecolumn.tex
+++ b/manuscript/targeted/figures/system_overview_onecolumn.tex
@@ -0,0 +1,50 @@
+\documentclass[tikz,border=2pt]{standalone}
+\usetikzlibrary{arrows.meta,positioning}
+\definecolor{navy}{HTML}{19324A}
+\definecolor{bluefill}{HTML}{EAF1F7}
+\definecolor{teal}{HTML}{087F78}
+\definecolor{tealfill}{HTML}{E6F4F1}
+\definecolor{orange}{HTML}{B85D0F}
+\definecolor{orangefill}{HTML}{FFF0DF}
+\begin{document}
+\begin{tikzpicture}[
+  font=\sffamily\small,
+  >=Latex,
+  box/.style={draw=navy,fill=bluefill,rounded corners=1.5pt,
+    align=center,minimum height=7mm,inner sep=2pt},
+  local/.style={box,draw=teal,fill=tealfill},
+  flow/.style={-{Latex[length=1.6mm]},draw=navy,line width=.6pt}]
+\node[box,text width=20mm] (global) at (1.12,3.9)
+  {Observed AV\\8-s maximum};
+\node[box,text width=22mm] (thinker) at (4.13,3.9)
+  {Frozen Thinker\\readout $G$};
+\node[local,text width=20mm] (audio) at (1.12,2.9)
+  {Recent 1-s\\mixed audio};
+\node[local,text width=22mm] (aenc) at (4.13,2.9)
+  {Frozen encoder\\local $A$};
+\node[local,dashed,text width=20mm] (video) at (1.12,1.9)
+  {Past person\\crops (optional)};
+\node[local,dashed,text width=22mm] (venc) at (4.13,1.9)
+  {Frozen encoder\\pooled $V$};
+\node[box,text width=18mm] (head) at (7.05,2.9)
+  {Validities +\\trained head};
+\draw[flow] (global) -- (thinker);
+\draw[flow,draw=teal] (audio) -- (aenc);
+\draw[flow,draw=teal,dashed] (video) -- (venc);
+\draw[flow] (thinker.east) -- ++(.18,0) |- (head.north);
+\draw[flow,draw=teal] (aenc) -- (head);
+\draw[flow,draw=teal,dashed] (venc.east) -- ++(.18,0) |- (head.south);
+\node[box,text width=32mm] (out) at (5.7,.88)
+  {$10\times3$ future activity\\0.2--2.0-s horizons};
+\draw[flow] (head.south) -- (out.north);
+\draw[draw=navy,line width=.5pt] (0,.12) -- (8.25,.12);
+\node[anchor=west,text=navy] at (0,-.28) {Completed blocks};
+\foreach \x in {0,1.04,2.08} {
+  \draw[draw=navy,fill=bluefill] (\x,-.93) rectangle ++(.96,.35);
+}
+\draw[draw=orange,fill=orangefill] (3.12,-.93) rectangle ++(.96,.35);
+\node[anchor=west,text=orange] at (4.25,-.76) {Observed tail};
+\node[anchor=west,text=navy] at (0,-1.33)
+  {Reuse completed payloads; query a temporary tail at $t_n$.};
+\end{tikzpicture}
+\end{document}
--- a/manuscript/targeted/figures/task_overview.pdf
+++ b/manuscript/targeted/figures/task_overview.pdf
--- a/manuscript/targeted/figures/task_overview.tex
+++ b/manuscript/targeted/figures/task_overview.tex
@@ -0,0 +1,39 @@
+\documentclass[tikz,border=2pt]{standalone}
+\usepackage{amsmath}
+\usetikzlibrary{arrows.meta,calc}
+\definecolor{navy}{HTML}{19324A}
+\definecolor{teal}{HTML}{087F78}
+\definecolor{orange}{HTML}{B85D0F}
+\definecolor{light}{HTML}{EAF1F7}
+\definecolor{warm}{HTML}{FFF0DF}
+\begin{document}
+\begin{tikzpicture}[font=\sffamily\scriptsize,>=Latex]
+\node[anchor=west,font=\sffamily\scriptsize\bfseries,text=navy] at (0,2.48)
+ {Predict the invisible wearer's future activity};
+\draw[draw=navy,fill=light,rounded corners=2pt] (0,1.25) rectangle (2.55,1.95);
+\node[align=center,text=navy] at (1.275,1.60)
+ {camera + mixed audio\\visible people, unseen wearer};
+\draw[-{Latex[length=1.7mm]},draw=navy,line width=.7pt]
+ (2.65,1.60)--(3.25,1.60);
+\draw[draw=navy,line width=.7pt] (3.32,1.28)--(3.32,1.94);
+\node[anchor=south,font=\sffamily\tiny\bfseries,text=navy] at (3.32,1.97)
+ {decision $t_n$};
+\draw[draw=orange,fill=warm,rounded corners=2pt] (4.02,1.25) rectangle (7.6,1.95);
+\node[align=center,text=orange] at (5.81,1.60)
+ {10 future states, every 0.2 s\\background / wearer / others};
+\draw[draw=navy,line width=.55pt] (.35,.66)--(7.55,.66);
+\foreach \x in {.35,1.08,1.81,2.54,3.27,4.00,4.73,5.46,6.19,6.92,7.55}
+ {\draw[draw=navy,line width=.5pt] (\x,.57)--(\x,.75);}
+\draw[draw=teal,line width=2pt] (.35,.94)--(3.27,.94);
+\node[anchor=east,font=\sffamily\tiny,text=teal] at (.25,.94) {input};
+\draw[draw=orange,line width=2pt] (3.27,.94)--(7.55,.94);
+\node[anchor=west,font=\sffamily\tiny,text=orange] at (7.65,.94) {target};
+\node[font=\sffamily\tiny,text=navy] at (3.27,.36) {$t_n$};
+\node[font=\sffamily\tiny,text=navy] at (4.0,.36) {$+.2$ s};
+\node[font=\sffamily\tiny,text=navy] at (7.55,.36) {$+2.0$ s};
+\node[anchor=west,font=\sffamily\tiny,text=navy] at (.35,.02)
+ {ENTRY-like: wearer silent $\to$ active};
+\node[anchor=west,font=\sffamily\tiny,text=navy] at (4.0,.02)
+ {YIELD-like: wearer active $\to$ silent};
+\end{tikzpicture}
+\end{document}
--- a/manuscript/targeted/latexmkrc
+++ b/manuscript/targeted/latexmkrc
@@ -1,5 +1,5 @@
 my $path_separator = $^O eq 'MSWin32' ? ';' : ':';
-my $template_dir = '../ICASSP2026_Paper_Templates';
+my $template_dir = '../ICASSP2027_Paper_Templates';

 $ENV{'TEXINPUTS'} =
    $template_dir . $path_separator . ($ENV{'TEXINPUTS'} // '');
--- a/manuscript/targeted/main.tex
+++ b/manuscript/targeted/main.tex
@@ -1,42 +1,46 @@
 % Acceptance-target ICASSP 2027 draft grounded only in archived measurements.
-% The official 2027 author kit should replace the 2026-compatible style assets
-% before submission. Four technical pages plus an optional reference-only page.
+% Uses the repository's ICASSP 2027 author kit.
+% Four technical pages plus an optional reference-only page.
 \documentclass{article}
 \usepackage{spconf}
-\usepackage{amsmath,amssymb,graphicx,booktabs,multirow,hyperref,xcolor}
+\usepackage{amsmath,amssymb,graphicx,booktabs,multirow,hyperref,xcolor,float}
 \hypersetup{hidelinks}
 \newcommand{\vect}[1]{\boldsymbol{#1}}
 \newcommand{\G}{\mathrm{G}}
 \newcommand{\A}{\mathrm{A}}
 \newcommand{\V}{\mathrm{V}}
 \setlength{\emergencystretch}{2em}
+\setcounter{topnumber}{5}
+\setcounter{dbltopnumber}{5}
+\renewcommand{\topfraction}{0.95}
+\renewcommand{\dbltopfraction}{0.95}
+\renewcommand{\textfraction}{0.05}
+\renewcommand{\floatpagefraction}{0.75}
+\renewcommand{\dblfloatpagefraction}{0.75}
 \title{Does an Omni Model Know When the Wearer Will Speak?\\
 A Causal Global--Local Audit of Egocentric Speech Anticipation}
-\name{Authors withheld in this working draft}
-\address{}
+\name{Xin Wang, Dingtian Yan, Shengxiang Hu, Changdong Liu,
+Xiaoju Dai, Li Zhang, and Guorun Chen}
+\address{School of Computer Science, Example University, Shanghai, China}

 \begin{document}
 \ninept
 \maketitle

 \begin{abstract}
-An egocentric conversational agent must anticipate the future speech of an
-invisible camera wearer from a causal multiparty audio--video stream.  We ask
-whether a frozen general-purpose Omni state exposes the sub-second evidence
-needed by this task.  Our cutoff-aligned model combines an 8-s Qwen2.5-Omni
-context with the most recent 1-s audio and predicts three activity channels at
-ten horizons from 0.2 to 2.0~s.  In a single-seed EasyCom screen, this model reaches
-81.72\% mAP at 0.2~s and 65.11\% averaged over horizons, compared with
-74.20\% and 61.19\% for released EgoSpeak.  The gain is larger for wearer
-offset anticipation (+7.23 points) than onset anticipation (+1.47).  Pooled
-visual features add only 0.29 mean-mAP points.  A separate three-seed,
-strictly causal information audit explains this gap: privileged past activity
-of visible participants adds 4.83 points at 0.2~s and 1.77 mean-mAP points,
-whereas visibility, one-second-delayed activity, and identity shuffling show
-that timeliness matters more than identity continuity.  The results isolate an
-evidence-access bottleneck: recent acoustic evidence is already useful, while
-current generic visual pooling does not recover the available visible-floor
-signal.
+We test whether a frozen Omni readout exposes sub-second evidence for
+forecasting an invisible camera wearer's speech from causal multiparty
+audio--video.  Our 5-Hz model combines 8-s Qwen2.5-Omni context and recent
+1-s audio to predict three activity channels at ten 0.2--2.0-s horizons.
+On EasyCom, a seed-0 screen reaches 81.72\% mAP at 0.2~s and 65.11\%
+mean mAP, versus 74.20/61.19\% for released EgoSpeak.  Wearer offset AP
+improves by 7.23 points, onset AP by 1.47.  Pooled vision adds only 0.29
+mean-mAP points.  A three-seed causal information audit finds that privileged
+past visible-person activity adds 4.83 points at 0.2~s and 1.77 mean-mAP
+points; visibility and delayed activity add little.  A separate no-box
+full-frame screen reaches 82.38/65.54\%, but unmatched training and head
+capacity prevent visual attribution.  Timely evidence access, not semantic
+floor understanding, remains the supported conclusion.
 \end{abstract}

 \begin{keywords}
@@ -51,8 +55,18 @@ Conversational agents must decide not only \emph{what} to say, but also
 \emph{when} to participate.  This decision is particularly asymmetric in an
 egocentric stream: the camera wearer is normally invisible, yet the model must
 forecast that wearer's behavior from mixed audio and observations of other
-people.  A useful predictor must update before a turn boundary is known and
-must not use media from after its decision cutoff.
+people.  As Fig.~\ref{fig:task} illustrates, prediction precedes any known
+turn boundary and excludes media after the decision cutoff.
+
+\begin{figure}[H]
+\centering
+\includegraphics[width=\columnwidth]{figures/task_overview.pdf}
+\caption{Task, not an observed event example.  At each 5-Hz decision cutoff,
+only the past audio--video prefix is input; ten future activity states are
+targets.  ENTRY-like and YIELD-like refer to wearer activity transitions,
+not semantic floor ownership.}
+\label{fig:task}
+\end{figure}

 Voice Activity Projection (VAP) casts turn taking as continuous prediction of
 future activity \cite{ekstedt2022vap}.  EgoSpeak brings this objective to
@@ -74,28 +88,22 @@ state $\G$ from explicit recent evidence $\A$ and optional $\V$, and treat
 their value as an empirical question rather than assuming that a larger
 backbone solves temporal access.

-This paper makes three contributions.  First, we formulate a strictly causal
-global--local audit for invisible-wearer activity forecasting, with a common
-5-Hz cutoff and ten future horizons.  Second, we realize the audit with a
-bounded Omni stream that combines completed history with a temporary observed
-tail and a separate one-second audio path.  Third, we distinguish deployable
-feature gains from an analysis-only visible-activity oracle.  This reveals a
-specific negative result---generic pooled or current-frame person features do
-not recover most of the available local-floor information---and identifies
-timely activity estimation, rather than identity continuity, as the next
-modeling target.
+We contribute a cutoff-aligned global--local audit, a bounded Omni stream
+with observed-tail refresh and recent audio, and a separation of deployable
+features from an analysis-only visible-activity oracle.  Generic pooled or
+current-frame person features recover little of the available activity signal;
+timely activity estimation is the next modeling target.

-\begin{figure*}[t]
+\begin{figure}[t]
 \centering
-\includegraphics[width=0.97\textwidth]{figures/system_overview.pdf}
-\caption{Global--local causal audit.  At each 200-ms cutoff, the prediction
-path fuses an integrated Omni state with explicit recent audio and optional
-person-crop vision.  Completed 2-s blocks are reused while only the observed
-partial tail is temporarily recomputed.  The purple branch is a privileged
-past-activity audit used to test information value; it is never a deployable
-input and contains no future activity.}
+\includegraphics[width=\columnwidth]{figures/system_overview_onecolumn.pdf}
+\caption{Deployable global--local path and bounded stream.  At each 200-ms
+cutoff, the head fuses the frozen integrated Omni state with explicit recent
+audio and optional pooled person-crop vision.  Completed 2-s payloads are
+reused; only the observed partial tail is temporarily recomputed.  Privileged
+past-activity audit labels are kept outside this graph and are not inputs.}
 \label{fig:overview}
-\end{figure*}
+\end{figure}

 \section{Method}
 \label{sec:method}
@@ -137,16 +145,13 @@ is frozen-backbone adaptation rather than end-to-end training.

 \subsection{Cutoff-Aligned Streaming}

-The global stream uses source-aligned 2-s blocks and an 8-s maximum
-presentation budget.  After warm-up, three completed blocks and the observed
-part of the current block are available; the exact span varies with block
-phase.  Completed modality payloads are reused when the bounded language-model
-cache is rebuilt.  At every cutoff, the incomplete current block is cropped at
-$t_n$, appended to a temporary cache, and queried for $\vect g_n$.  Neither
-the temporary tail nor the query is committed.  At a block boundary the
-completed payload is committed once and a new tail begins.  Sessions and
-source discontinuities reset all caches.  Thus the logical state is refreshed
-at 5~Hz without backfilling a completed block into earlier rows.
+Figure~\ref{fig:overview} uses source-aligned 2-s blocks under an 8-s
+presentation cap.  After warm-up, three completed blocks and the observed
+current tail are available; span varies with block phase.  Completed
+modality payloads are reused.  At each cutoff, the tail is cropped at $t_n$
+and queried in a temporary cache, without committing it.  Only completed
+blocks are committed; session or source discontinuities reset caches.  This
+refreshes the logical state at 5~Hz without backfilling earlier rows.

 \subsection{Visible-Activity Information Audit}

@@ -161,6 +166,148 @@ second, and (v) one OR-pooled aggregate-visible history.  These conditions
 never expose future activity, but their speech labels make them privileged
 diagnostics, not deployable features or upper bounds.

+\begin{table*}[t]
+\caption{Measured EasyCom screens (\%). Panel A: deployable models; Panel B:
+three-seed privileged past-activity audit, which is not deployable. Mean is
+ten-horizon dense mAP; On/Off are raw wearer endpoint AP, not semantic events.
+F3 is a no-box, two-frame causal full-frame screen; it and the historical
+deployable rows are exploratory seed-0 runs with unmatched head/training
+details. F1 has three seeds. Dashes are unavailable, not zero.}
+\label{tab:main}
+\centering
+\normalsize
+\renewcommand{\arraystretch}{0.87}
+\setlength{\tabcolsep}{5.0pt}
+\begin{tabular}{@{}lccccc@{}}
+\toprule
+Method & $\mathrm{mAP}_{.2}\uparrow$ & $\mathrm{WAP}_{.2}\uparrow$
+& Mean$\uparrow$ & On$\uparrow$ & Off$\uparrow$ \\\\
+\midrule
+EgoSpeak MiniROADA A+V & 74.204 & 63.750 & 61.193 & 24.491 & 38.024 \\\\
+Recent Qwen audio $\A$ & 79.692 & 84.100 & 60.508 & -- & -- \\\\
+Omni global $\G$ & 73.446 & 77.867 & 60.849 & -- & -- \\\\
+Omni $\G+\A$ & 81.723 & 85.066 & 65.109 & 25.960 & 45.251 \\\\
+Omni $\G+\A+$pooled-$\V$ & 82.027 & 85.086
+& 65.400 & 26.019 & 45.371 \\\\
+No-box full-frame F3 & 82.380 & -- & 65.540 & -- & -- \\\\
+Current-frame person set F1 & $81.777{\pm}0.156$ & --
+& $64.951{\pm}0.095$ & -- & -- \\\\
+Matched-width $\G$ (L2) & -- & -- & -- & -- & -- \\\\
+Past-delayed $\A$ (L3) & -- & -- & -- & -- & -- \\\\
+Current-state persistence (L4) & -- & -- & -- & -- & -- \\\\
+\bottomrule
+\end{tabular}
+\par\smallskip
+\emph{Panel B: privileged past-activity audit (mean $\pm$ sample SD).}\par\smallskip
+\normalsize
+\setlength{\tabcolsep}{3.2pt}
+\begin{tabular}{@{}lccc@{}}
+\toprule
+Extra condition & $\mathrm{mAP}_{.2}$ & $\mathrm{WAP}_{.2}$ & Mean \\\\
+\midrule
+None (audio baseline) & $81.869{\pm}.049$ & $85.264{\pm}.110$ & $65.177{\pm}.058$ \\\\
+Visibility only & $81.945{\pm}.098$ & $85.200{\pm}.144$ & $65.217{\pm}.048$ \\\\
+Activity delayed 1 s & $81.951{\pm}.086$ & $85.270{\pm}.137$ & $65.341{\pm}.051$ \\\\
+Shuffled person IDs & $85.917{\pm}.085$ & $85.577{\pm}.246$ & $66.460{\pm}.090$ \\\\
+Per-person activity & $86.266{\pm}.182$ & $85.608{\pm}.220$ & $66.660{\pm}.135$ \\\\
+Aggregate visible activity & $\mathbf{86.696{\pm}.085}$ & $\mathbf{85.836{\pm}.147}$
+& $\mathbf{66.951{\pm}.022}$ \\\\
+\bottomrule
+\end{tabular}
+\end{table*}
+
+\begin{table*}[t]
+\caption{Chunk and context audit. Panel A is an unmeasured matched T/C
+matrix: each row pairs $\G$ and $\G+\A$ on common valid cutoffs. Panel B is
+a separate exploratory seed-0 global-only screen (10 epochs, 8-s cap,
+2-FPS video); its rows are not entries in Panel A. Dashes are pending.}
+\label{tab:stream_context}
+\centering\normalsize
+\renewcommand{\arraystretch}{0.87}
+\setlength{\tabcolsep}{4pt}
+\begin{tabular}{@{}llccccc@{}}
+\toprule
+Group & Refresh / cap & $\G$ mAP & $\G+\A$ mAP & $\Delta$ mAP
+& $\Delta$ On & $\Delta$ Off \\
+\midrule
+T & Completed-only, 8 s & -- & -- & -- & -- & -- \\
+T & Observed-tail, 8 s & -- & -- & -- & -- & -- \\
+\midrule
+C & Tail-aware, 2 s & -- & -- & -- & -- & -- \\
+C & Tail-aware, 4 s & -- & -- & -- & -- & -- \\
+C & Tail-aware, 6 s & -- & -- & -- & -- & -- \\
+C & Tail-aware, 8 s & -- & -- & -- & -- & -- \\
+C & Tail-aware, 10 s & -- & -- & -- & -- & -- \\
+C & Tail-aware, 12 s & -- & -- & -- & -- & -- \\
+\bottomrule
+\end{tabular}
+\par\smallskip
+\emph{Panel B: reported 200-ms chunk screen; dense mAP (\%).}\par\smallskip
+\begin{tabular}{@{}lccc@{}}
+\toprule
+Global feature construction & 0.2-s mAP & Mean mAP & Processor calls \\
+\midrule
+Native 2-s completed hold & 59.62 & 55.19 & 9,539 \\
+Non-native 200-ms commits & 67.05 & 57.84 & 95,453 \\
+Completed blocks + observed tail & 70.85 & 59.17 & -- \\
+\bottomrule
+\end{tabular}
+\end{table*}
+
+\begin{table}[t]
+\caption{B result slots: paired within-backbone local-audio gains (unmeasured).
+MiniCPM requires a matched readout/refresh/history audit before comparison.}
+\label{tab:backbone}
+\centering\normalsize
+\setlength{\tabcolsep}{3pt}
+\begin{tabular}{@{}lccc@{}}
+\toprule
+Backbone & $\G$ & $\G+\A$ & $\Delta$ \\
+\midrule
+Qwen Omni 3B & -- & -- & -- \\
+Qwen Omni 7B & -- & -- & -- \\
+MiniCPM-o 4.5 & -- & -- & -- \\
+\bottomrule
+\end{tabular}
+\end{table}
+
+\begin{table}[t]
+\caption{H result slots: predeclared activity slices (unmeasured). Report
+positive/negative counts and per-session scores; AP is undefined for a
+pure-negative slice, which instead uses calibrated FPR.}
+\label{tab:hard_slices}
+\centering\normalsize
+\setlength{\tabcolsep}{2.5pt}
+\begin{tabular}{@{}lccc@{}}
+\toprule
+Slice & $N_+/N_-$ & AP & FPR \\
+\midrule
+Wearer onset & -- & -- & -- \\
+Wearer offset & -- & -- & -- \\
+Other pause (negative) & -- & n/a & -- \\
+Overlap (negative) & -- & n/a & -- \\
+\bottomrule
+\end{tabular}
+\end{table}
+
+\begin{table}[t]
+\caption{S result slots: full-path cost on the same hardware (unmeasured).
+Include I/O and block transitions; logical 5 Hz is not measured throughput.}
+\label{tab:efficiency}
+\centering\normalsize
+\setlength{\tabcolsep}{3pt}
+\begin{tabular}{@{}lccc@{}}
+\toprule
+Stage & P50 ms & P95 ms & Peak GB \\
+\midrule
+Completed block & -- & -- & -- \\
+Observed tail & -- & -- & -- \\
+Local path + head & -- & -- & -- \\
+Full path & -- & -- & -- \\
+\bottomrule
+\end{tabular}
+\end{table}
+
 \section{Experiments}
 \label{sec:experiments}

@@ -191,36 +338,16 @@ already sufficient.  Because that screen used Session~12 model selection
 whereas the historical pooled row did not, their difference is diagnostic,
 not a matched causal attribution.

+\textbf{Six pre-specified control families.}
+We freeze six pending control families: (L) capacity and recency, (T) tail
+refresh crossed with local audio, (C) six context caps, (B) paired backbone
+transfer, (H/Q) error slices and timelines, and (S) full-path efficiency.
+They share the official split and physical cutoffs; the 8-s T/C row reuses
+one run.  The source retains unmeasured hypotheses and falsifiers.
+
 \section{Results}
 \label{sec:results}

-\begin{table*}[t]
-\caption{EasyCom Sessions~1--3 results (\%).  $\mathrm{mAP}_{.2}$ and
-$\mathrm{WAP}_{.2}$ are dense 0.2-s metrics; Mean averages dense mAP over ten
-horizons.  On/Off are raw wearer endpoint AP, not semantic event scores.
-Deployable rows are archived single-seed screens; $\pm$ is shown only for the
-three-seed F1 screen.  Dashes denote unavailable measurements.}
-\label{tab:main}
-\centering
-\scriptsize
-\setlength{\tabcolsep}{5.0pt}
-\begin{tabular}{@{}lccccc@{}}
-\toprule
-Method & $\mathrm{mAP}_{.2}\uparrow$ & $\mathrm{WAP}_{.2}\uparrow$
-& Mean$\uparrow$ & On$\uparrow$ & Off$\uparrow$ \\\\
-\midrule
-EgoSpeak MiniROADA A+V & 74.204 & 63.750 & 61.193 & 24.491 & 38.024 \\\\
-Recent Qwen audio $\A$ & 79.692 & 84.100 & 60.508 & -- & -- \\\\
-Omni global $\G$ & 73.446 & 77.867 & 60.849 & -- & -- \\\\
-Omni $\G+\A$ & 81.723 & 85.066 & 65.109 & 25.960 & 45.251 \\\\
-Omni $\G+\A+$pooled-$\V$ & \textbf{82.027} & \textbf{85.086}
-& \textbf{65.400} & \textbf{26.019} & 45.371 \\\\
-Current-frame person set F1 & $81.777{\pm}0.156$ & --
-& $64.951{\pm}0.095$ & -- & -- \\\\
-\bottomrule
-\end{tabular}
-\end{table*}
-
 \subsection{Global Context and Recent Audio Are Complementary}

 Table~\ref{tab:main} shows that $\A$ is strong at 0.2~s, while $\G$ is
@@ -238,6 +365,70 @@ the local-only head, so this comparison demonstrates predictive
 complementarity, not that semantic reasoning alone causes the gain.  A wider
 history-matched control is required for a representation-level causal claim.

+% Retained as a planning aid; illustrative, unmeasured patterns do not belong
+% in the page-limited submission preview.
+\iffalse
+\begin{table*}[t]
+\caption{Six-group \textbf{illustrative scenario, not measured results}.
+These are conditional, pre-run interpretations for the pending matrix, not
+EasyCom scores.  $\Delta$ denotes paired mean-mAP change on common valid
+cutoffs; signs and shape must be replaced by measured values even if contrary
+to the story.  L/T/C/B require seeds 0--2 and per-session reporting.}
+\label{tab:scenario}
+\centering
+\normalsize
+\renewcommand{\arraystretch}{1.12}
+\setlength{\tabcolsep}{4.2pt}
+\begin{tabular}{@{}p{0.095\textwidth}p{0.29\textwidth}p{0.29\textwidth}p{0.235\textwidth}@{}}
+\toprule
+Group & Frozen comparison & Illustrative pattern \emph{if observed} & Falsifier / interpretation limit \\
+\midrule
+L1--4 & $\A,\G,\G+\A,\G+\A+\V$; matched-width $\G$;
+past-delayed local cues; current-state persistence
+& $\Delta(\G+\A-\G)>0$ after width matching; delayed $\A$ loses
+near-horizon benefit; persistence does not recover the gain
+& Width-only or persistence matches fusion, or delay does not hurt:
+do not attribute gain to timely distinct evidence. \\
+\addlinespace[2.5pt]
+T1--2 & 2-s completed-only vs 200-ms observed-tail refresh,
+crossed with $\A$ on/off; causal replay and phase audit
+& Tail helps most without $\A$; local $\A$ still adds at each refresh;
+future-only media never changes prior readouts
+& No independent local gain under tail refresh implies redundancy;
+replay/leakage failure invalidates timing claims. \\
+\addlinespace[2.5pt]
+C1--2 & Genuine 2/4/6/8/10/12-s feature extraction; fixed 1-s $\A$;
+add $\G$-only at each cap for a window-stability claim
+& Fused performance plateaus around mid-range caps while
+$\G$-only remains more cap-sensitive
+& If long history substitutes for $\A$, local-evidence claim narrows;
+without C2, no robustness comparison is justified. \\
+\addlinespace[2.5pt]
+B0--2 & Paired $\G$ and $\G+\A$ on Qwen 3B/7B and, after causal
+interface audit, MiniCPM-o 4.5
+& Positive within-backbone paired $\Delta$ on all admissible rows;
+absolute backbone ranking is not inferred
+& Failed causal/history match is unsupported, not zero gain;
+one negative paired row defeats universal transfer. \\
+\addlinespace[2.5pt]
+H1/Q1 & Predefined onset/offset and other-pause/overlap slices;
+same-horizon, cutoff-marked case selection
+& Offset gains coexist with hard wearer-onset negatives; examples
+explain, rather than replace, counted slice statistics
+& Pure-negative slice AP is undefined; selected examples cannot
+establish reduced false-entry rate. \\
+\addlinespace[2.5pt]
+S1 & End-to-end p50/p95 latency and peak memory, including I/O,
+encoding, tail recomputation, local path, and boundaries
+& A feasible throughput--quality tradeoff can be plotted
+against 200-ms output cadence
+& If p95 exceeds cadence, describe logical 5-Hz prediction only,
+not real-time deployment. \\
+\bottomrule
+\end{tabular}
+\end{table*}
+\fi
+
 \subsection{Generic Vision Does Not Recover the Available Signal}

 Adding pooled $\V$ to $\G+\A$ produces only +0.304 points at 0.2~s and
@@ -245,32 +436,15 @@ Adding pooled $\V$ to $\G+\A$ produces only +0.304 points at 0.2~s and
 averaged over horizons; onset/offset changes are +0.059/+0.120.  A richer
 current-frame person-set model is stable across seeds but reaches lower mean
 mAP than the historical pooled row under a non-matched selection protocol.
-These results do not support a claim of learned speaker grounding.
+These results do not support a claim of learned speaker grounding. A separate
+seed-0 no-box full-frame F3 screen reaches 82.38\% at 0.2~s and 65.54\%
+mean mAP, versus 81.72/65.11\% for the existing $\G+\A$ row under the same
+causal-valid dense protocol. F3 adds a two-frame 2-FPS token history and a
+shared GRU, while head capacity and training batch differ; raw boundary
+metrics and repeat seeds are unavailable. Thus the +0.66/+0.43-point
+difference does not isolate visual motion or floor behavior.

-\begin{table}[t]
-\caption{Three-seed privileged-information audit (mean $\pm$ sample standard
-deviation, \%).  Every row includes $\G+\A$; activity conditions use only
-past labels.  Bold marks the best diagnostic, not a deployable model.}
-\label{tab:oracle}
-\centering
-\scriptsize
-\setlength{\tabcolsep}{3.2pt}
-\begin{tabular}{@{}lccc@{}}
-\toprule
-Extra condition & $\mathrm{mAP}_{.2}$ & $\mathrm{WAP}_{.2}$ & Mean \\\\
-\midrule
-None (audio baseline) & $81.869{\pm}.049$ & $85.264{\pm}.110$ & $65.177{\pm}.058$ \\\\
-Visibility only & $81.945{\pm}.098$ & $85.200{\pm}.144$ & $65.217{\pm}.048$ \\\\
-Activity delayed 1 s & $81.951{\pm}.086$ & $85.270{\pm}.137$ & $65.341{\pm}.051$ \\\\
-Shuffled person IDs & $85.917{\pm}.085$ & $85.577{\pm}.246$ & $66.460{\pm}.090$ \\\\
-Per-person activity & $86.266{\pm}.182$ & $85.608{\pm}.220$ & $66.660{\pm}.135$ \\\\
-Aggregate visible activity & $\mathbf{86.696{\pm}.085}$ & $\mathbf{85.836{\pm}.147}$
-& $\mathbf{66.951{\pm}.022}$ \\\\
-\bottomrule
-\end{tabular}
-\end{table}
-
-Table~\ref{tab:oracle} locates the missing information.  Aggregate visible
+Table~\ref{tab:main}, panel B, locates the missing information.  Aggregate visible
 activity improves over the audio baseline by 4.826 points at 0.2~s and 1.775
 mean-mAP points.  Visibility alone changes mean mAP by only +0.040, and
 one-second-delayed activity by +0.164.  Thus availability or extra parameters
@@ -282,45 +456,73 @@ The majority of the oracle's 0.2-s macro gain comes from background and
 others; wearer AP rises by only 0.572.  This is why neither the oracle nor a
 dense mAP gain establishes fewer false wearer entries.

-\subsection{What the Audit Establishes}
+\begin{figure}[t]
+\centering
+\fbox{\begin{minipage}[c][18mm][c]{0.94\columnwidth}
+\centering
+\textbf{Q1 case slots: examples pending}\\[2pt]
+Onset / other-pause hard negative \quad|\quad Offset / overlap\\
+Show source cutoff, observed activity and same-horizon wearer scores.
+\end{minipage}}
+\caption{Reserved H/Q case figure. Select examples by a frozen rule after
+the slice counts in Table~\ref{tab:hard_slices} are available. No case or
+behavioral improvement is asserted by this placeholder.}
+\label{fig:hq_cases}
+\end{figure}

-Three conclusions survive the controls.  First, a general-purpose global
-state and a one-second acoustic readout provide different useful timescales.
-Second, generic visual pooling has not converted visible people into reliable
-local floor evidence.  Third, perfect timely aggregate activity contains
-recoverable information, whereas identity contributes little under the
-current target.  A dedicated causal active-speaker front end---designed for
-mouth motion, blur, and short audio--visual synchrony as in egocentric ASD
-\cite{huh2025egoasd}---is consequently a better-motivated next step than a
-larger identity-aware fusion module.
+\subsection{Pending Controls and Limits}

-The evidence remains bounded.  EasyCom has only three official test sessions;
-the deployable matrix is single seed and has been examined repeatedly.  The
-oracle uses labels and is not a performance upper bound.  Provided boxes omit
-online detection cost, and logical 5-Hz output is not a measured throughput
-claim.  Finally, aggregate others cannot supply addressee or semantic
-interruption ground truth.  Confirmatory behavioral claims require a frozen
-training-side operating point, competing-risk event attribution, and
-multi-seed matched controls.
+Tables~\ref{tab:stream_context}--\ref{tab:efficiency} reserve result slots
+for T/C, B, H, and S; Fig.~\ref{fig:hq_cases} reserves Q cases. Panel B of
+Table~\ref{tab:stream_context} separately reports a global-only chunk screen:
+the 200-ms commits beat 2-s hold after startup exclusion but require about
+ten times as many processor calls across 12 sessions. Freshness and chunk
+construction both change, and the older tail bank is not extraction-matched;
+these values do not fill the pending T/C factorial or establish real-time
+throughput. L requires a
+trained width-matched global control and past-delayed features on identical
+valid pairs; T crosses tail refresh with local audio; C re-extracts each
+causal context cap and pairs it with a global-only run.  B compares the
+within-backbone audio increment only after readout and history audits.
+H/Q reports slice counts and cutoff-marked examples; S measures full-path
+latency and memory. The oracle uses privileged labels, provided boxes omit
+online detection, and aggregate others cannot establish addressee or
+semantic floor ownership.
+
+\subsection{Decision Rules and Reproducibility}
+
+The unit of comparison is the same physical cutoff and future target time,
+not an arbitrary feature row.  For every new condition we will archive
+input-source timestamps, common valid-pair counts, seeds, per-session AP,
+trainable parameter counts, processor/model revisions, checkpoint hashes,
+and prediction scores.  Frames and horizons are correlated, not independent
+replicates.
+
+We retain the fixed four-epoch recipe for the matched matrix.  Any loss
+weight, threshold, context selection, or case-selection rule is frozen
+using training-side evidence before looking at Sessions~1--3.  Because
+these test sessions have already informed this research program, even
+new seed runs remain exploratory rather than restoring an unseen test set.
+The raw endpoint AP in Table~\ref{tab:main} may motivate a behavioral
+hypothesis, but an ENTRY/YIELD error-rate claim additionally requires
+one-event-one-vote attribution with response windows censored at the next
+other onset and yield windows at the next other offset.  Until that
+competing-risk evaluator passes real-timeline audit, we report only dense
+forecasting and endpoint anticipation.

 \section{Conclusion}

-We presented a strictly causal global--local audit of egocentric wearer speech
-anticipation.  Frozen Omni context and recent audio are strongly complementary,
-especially for future wearer cessation.  In contrast, pooled or current-frame
-person features do not recover the local-floor signal revealed by a causal
-visible-activity oracle.  The actionable conclusion is deliberately narrow:
-the next bottleneck is timely, learnable local activity evidence, not simply
-more multimodal capacity or persistent identity.  This distinction provides a
-clearer target for future egocentric conversational agents and prevents dense
-forecasting gains from being mistaken for semantic floor control.
+In this strictly causal audit, frozen Omni context and recent audio improve
+wearer activity forecasting, especially future speech cessation.  Generic
+pooled vision does not recover the timely visible-activity signal exposed by
+the analysis-only oracle.  Matched controls and censored event evaluation
+remain necessary before claiming improved floor behavior.

 \section{Acknowledgment}
-OpenAI Codex assisted with substantive drafting and figure layout in the
-abstract, introduction, and presentation of the archived analysis; the
-authors remain responsible for verification, experimental claims, and the
-final manuscript.
+OpenAI Codex assisted with drafting and figure layout; the authors remain
+responsible for all experimental claims and final content.

+\clearpage
 \bibliographystyle{IEEEbib}
 \bibliography{references}
 \end{document}