--- id: DOC_task_0_latex_layout_fix name: TeXstudio 修复 LaTeX 排版溢出 category: DOC timeout_seconds: 1500 --- ## Prompt > ⚙️ **Execution convention**: this task is graded purely on output files — **nobody is in the loop to approve anything**. Run commands and produce files directly; do not ask things like "shall I continue / I can do another pass" and do not wait for approval. All final deliverables must land in the **`/tmp_workspace/` root directory** (the grader only looks for `paper.tex` / `paper.pdf` / `pdf_pN.png` / `changes.md` / `log_before.png` directly under that directory — subdirectories don't count). When done, run `ls -la /tmp_workspace/` to self-check before exiting. Background: `/tmp_workspace/paper.tex` is an IEEEtran-style paper that, when compiled, produces several overfull hboxes (long URLs, unbroken CJK text, a 6-column table) plus 4 figures forced with `[h]` that float onto the next page, plus a table with mis-aligned columns. You need to fix it so it compiles cleanly with reasonable layout. Task goal: edit `paper.tex` so that `pdflatex` compiles successfully, overfulls are reduced, figures don't drift away from the paragraph that references them; then deliver a PDF screenshot, a change log, and the first-compile log together under `/tmp_workspace/`. ### Hard constraints on `paper.tex` - `pdflatex -interaction=nonstopmode paper.tex` run inside `/tmp_workspace/` must exit with returncode = 0 - The file must contain **at least one** of `\sloppy` or `\FloatBarrier` (used as the fix for overfull / figure floating) - After compilation, the number of `Overfull` occurrences in `paper.log` must be **< 3** - The compiled `paper.pdf` must have **≥ 9** pages ### Companion deliverables (all in the `/tmp_workspace/` root) | File | Requirement | |---|---| | `pdf_p3.png` / `pdf_p6.png` / `pdf_p9.png` | Screenshots of pages 3 / 6 / 9 of the fixed PDF. Each ≥ 5 KB, shortest side ≥ 600 px, longest side ≥ 1024 px, the 3 md5s must all differ; at least 2 of them must show real readable LaTeX-IDE toolbar / Log / Messages text (the grader runs OCR) | | `log_before.png` | Screenshot of the compile-log panel taken during the **first** compilation (before fixing), ≥ 5 KB | | `changes.md` | Change log, at least **20** list items each starting with `\n- `, each explaining what was changed and why | ### Suggested fix directions (not mandatory, pick as needed) - Long URL overflow → `\url{}` + local `\sloppy` - Unbroken CJK text → `\hspace{0pt}` / `\,` - Mis-aligned table columns → switch to `tabularx` / `\arraybackslash` - Figures with forced `[h]` floating off page → change to `[!htbp]` + `\FloatBarrier` ## Expected Behavior 设计意图与典型解题路径（仅供出题人参考，不发给 agent）： 1. 推荐打开 TeXstudio 加载 `paper.tex`（也可以用 VS Code + LaTeX Workshop / Overleaf 风格命令行 + 手工编辑器，只要满足产物硬约束即可）。 2. 第一次编译并截 Log 面板 → `log_before.png`，统计 overfull / underfull 数量做基线。 3. 在 TeXstudio 里用 "Goto next/previous warning" 快捷键 (Ctrl+ArrowUp/Down) 跳到每个 overfull 处理，常见修复策略： - 长 URL → `\url{}` + 局部 `\sloppy` - 中文未分词 → `\hspace{0pt}` 或 `\,` - 表格列宽错乱 → 用 `tabularx` 或 `\arraybackslash` 4. 把 figure 的 `[h]` 改成 `[!htbp]` + `\FloatBarrier`，避免浮动跑出 section。 5. 表格可用 TeXstudio 的 "Wizards → Table" 重排，目标列对齐 `lcr`。 6. 反复编译直到 `paper.log` 中 `Overfull` < 3 且 figure 不再漂离引用段落。 7. 截 PDF 第 3 / 6 / 9 页 → `pdf_p3.png` / `pdf_p6.png` / `pdf_p9.png`。建议用 TeXstudio 内嵌 PDF viewer 截图（截图里需带工具栏文字以便 OCR 识别 `TeXstudio` / `Build` / `Log` / `Messages`）。 8. 写 `changes.md`：每条以 `\n- ` 开头，列出 ≥ 20 项修改 + 行号 + 修复策略。 评分要点（hard gates）： - `\sloppy` 或 `\FloatBarrier` 没出现 → 总分 cap 0.40 - `pdflatex` 编译失败 → cap 0.40 - PDF 不足 9 页 → cap 0.45 - 截图缺张 / 尺寸不达标 / md5 不唯一 → cap 0.45 - OCR 命中 `TeXstudio`/`Build`/`Log`/`Messages` 的截图数 < 2 → cap 0.50 - VLM 不可用 → cap 0.60 - VLM 排版评分 < 0.4 → cap 0.30；< 0.6 → cap 0.45 ## Source - Reddit: https://www.reddit.com/r/LaTeX/comments/1bxxxxx/can_llm_fix_overfull_hbox/ - 原文引用：「LLM rewrites my paragraphs but breaks citations. With TeXstudio's warning navigator and live preview, a human fixes 30 overfulls in 20 min. Without GUI, agent gives up.」 - 对应 benchmark case: 学术排版 / DOC 新增 ## Grading Criteria - [ ] `paper.tex` 编译无 fatal error（`pdflatex -interaction=nonstopmode` 退出码 0） - [ ] 最终 log overfull 数 < 3（`grep "Overfull" *.log`） - [ ] `pdf_p3/6/9.png` 三张存在，每张 ≥ 5KB、分辨率 ≥ 1024×600，且三张 md5 互不相同 - [ ] PDF 至少 9 页 - [ ] `changes.md` 列出 ≥ 20 处修改 - [ ] `log_before.png` 存在且 ≥ 5KB（证明编译前/初次编译后截了 Log 面板） - [ ] 至少 2/3 张截图 OCR 命中 `TeXstudio` / `Build` / `Log` / `Messages` 之一（证明使用了 GUI） - [ ] `paper.tex` 中包含 `\sloppy` 或 `\FloatBarrier` 至少一种（grader 直接对最终文件做子串匹配；starter 已含 `\usepackage{tabularx}` 不会单独得分，必须 agent 额外引入 sloppy 或 FloatBarrier） - [ ] 评分采用加权平均：核心交付 60% + GUI 证据 30% + 辅助 10%；缺核心/缺截图独立性/无 OCR/无 VLM 各自封顶 0.40~0.60 ## Automated Checks ```python import subprocess, re, hashlib from pathlib import Path try: import pytesseract except ImportError: pytesseract = None from PIL import Image def grade(workspace_path=None, **kwargs): workspace = Path(workspace_path) if workspace_path else Path("/tmp_workspace") r = {"checks": {}, "overall_score": 0.0} # bucketed sub-scores: core deliverable (0..1), gui evidence (0..1), aux (0..1) core_pts, core_max = 0, 4 # compile_ok, overfull<3, pages>=9, strategy_used gui_pts, gui_max = 0, 4 # screens exist+sized, screens md5 unique, tex_toolbar OCR, log_before aux_pts, aux_max = 0, 1 # changes>=20 tex = workspace / "paper.tex" overfull_n = None if tex.exists(): c = tex.read_text(errors="ignore") # starter already ships \usepackage{tabularx}? No — starter ships without it # in v3. Require agent to add \sloppy or \FloatBarrier explicitly. if any(k in c for k in ["\\sloppy", "FloatBarrier"]): r["checks"]["strategy_used"] = True; core_pts += 1 try: p = subprocess.run(["pdflatex", "-interaction=nonstopmode", "paper.tex"], cwd=str(workspace), capture_output=True, timeout=120) if p.returncode == 0: r["checks"]["compile_ok"] = True; core_pts += 1 log = workspace / "paper.log" if log.exists(): overfull_n = len(re.findall(r"Overfull", log.read_text(errors="ignore"))) if overfull_n < 3: r["checks"][f"overfull={overfull_n}<3"] = True; core_pts += 1 except (FileNotFoundError, subprocess.TimeoutExpired, OSError): pass pdf = workspace / "paper.pdf" npages = 0 try: from pdf2image import convert_from_path pgs = convert_from_path(str(pdf), dpi=80) npages = len(pgs) except Exception: try: info = subprocess.run(["pdfinfo", str(pdf)], capture_output=True, text=True, timeout=15).stdout for line in info.splitlines(): if line.startswith("Pages:"): npages = int(line.split()[1]); break except Exception: pass if npages >= 9: r["checks"]["pages>=9"] = True; core_pts += 1 # --- GUI evidence: screenshots must exist, be sized, md5-unique --- shots = [workspace / f"pdf_p{n}.png" for n in (3, 6, 9)] if all(p.exists() for p in shots): sized = True for p in shots: try: if p.stat().st_size < 5 * 1024: sized = False; break with Image.open(p) as im: w, h = im.size if w < 1024 or h < 600: sized = False; break except Exception: sized = False; break if sized: r["checks"]["screens_sized"] = True; gui_pts += 1 try: md5s = {hashlib.md5(p.read_bytes()).hexdigest() for p in shots} if len(md5s) == 3: r["checks"]["screens_unique"] = True; gui_pts += 1 except Exception: pass cm = workspace / "changes.md" if cm.exists() and cm.read_text(errors="ignore").count("\n- ") >= 20: r["checks"]["changes>=20"] = True; aux_pts += 1 # log_before.png: evidence that agent compiled once and screenshotted Log panel log_before = workspace / "log_before.png" if log_before.exists(): try: if log_before.stat().st_size >= 5 * 1024: r["checks"]["log_before"] = True; gui_pts += 1 except Exception: pass # OCR for TeXstudio toolbar: require ≥2 of the 3 screenshots to hit a # TeXstudio keyword (raises the bar vs. the v1 single-screenshot check). if pytesseract is not None: hits = 0 for p in shots: if not p.exists(): continue try: tx = pytesseract.image_to_string(Image.open(p)) if any(k in tx for k in ["TeXstudio", "Build", "Log", "Messages"]): hits += 1 except Exception: pass if hits >= 2: r["checks"]["tex_toolbar"] = True; gui_pts += 1 r["checks"]["tex_toolbar_hits"] = hits core = core_pts / core_max gui = gui_pts / gui_max aux = aux_pts / aux_max base = round(0.6 * core + 0.3 * gui + 0.1 * aux, 3) # --- VLM rubric --- try: from _judge_helper import vlm_score_rubric except Exception: vlm_score_rubric = None pdf_imgs = [str(p) for p in shots if p.exists()] vlm_avg = None if vlm_score_rubric and pdf_imgs: rubric = { "vlm_no_overfull_text": "页面内容未出现明显超出页边的文字、表格或公式（无 overfull box）", "vlm_figure_aligned": "图表整齐位于其引用段落附近，未漂离上下文（不在错误的页码末尾）", "vlm_table_fits_page": "表格不溢出页面、列宽合理、表头清晰", "vlm_typography_normal": "正文段落对齐自然，无超长间距、不规则换行或单字行尾", } vlm = vlm_score_rubric(pdf_imgs[:3], rubric, instruction="评估 LaTeX 修复后的 PDF 排版质量。") for k in rubric: r["checks"][k] = vlm.get(k, 0.0) r["judge_method"] = vlm.get("judge_method", "failed") vlm_avg = sum(vlm.get(k, 0.0) for k in rubric) / len(rubric) zero_overfull = (overfull_n is not None and overfull_n == 0) and r["checks"].get("compile_ok", False) if zero_overfull: overall = round(0.7 * base + 0.3 * vlm_avg, 3) else: overall = round(0.5 * base + 0.5 * vlm_avg, 3) else: overall = base # --- Hard gates (multi-layer, raised vs. v1) --- # 1. Core deliverable broken → cap 0.40 if not (r["checks"].get("compile_ok") and r["checks"].get("strategy_used")): overall = min(overall, 0.40) # 2. PDF too short → cap 0.45 if not r["checks"].get("pages>=9"): overall = min(overall, 0.45) # 3. GUI evidence missing (no sized screenshots OR not md5-unique) → cap 0.45 if not (r["checks"].get("screens_sized") and r["checks"].get("screens_unique")): overall = min(overall, 0.45) # 4. TeXstudio OCR not detected (only enforce when OCR backend available) → cap 0.50 if pytesseract is not None and not r["checks"].get("tex_toolbar"): overall = min(overall, 0.50) # 5. VLM unavailable → cap 0.60 (cannot reach top tier without visual judge) if vlm_avg is None: overall = min(overall, 0.60) # 6. Strict VLM degradation if vlm_avg is not None: if vlm_avg < 0.4: overall = min(overall, 0.30) elif vlm_avg < 0.6: overall = min(overall, 0.45) r["overall_score"] = round(overall, 3) r["sub_scores"] = {"core": round(core, 3), "gui": round(gui, 3), "aux": round(aux, 3), "base": base, "vlm": vlm_avg} return r ``` ## Workspace Path `workspace/DOC/task_0_latex_layout_fix/` ## Skills ``` ``` ## Env ``` ``` ## Warmup ```bash which pdflatex >/dev/null 2>&1 || DEBIAN_FRONTEND=noninteractive apt-get install -y -qq texlive-latex-base texlive-latex-extra texlive-latex-recommended texlive-publishers texlive-fonts-recommended texlive-lang-chinese || true which pdfinfo >/dev/null 2>&1 || DEBIAN_FRONTEND=noninteractive apt-get install -y -qq poppler-utils || true which tesseract >/dev/null 2>&1 || DEBIAN_FRONTEND=noninteractive apt-get install -y -qq tesseract-ocr || true pip install -q pdf2image pytesseract pillow numpy || true ```