Repository Analysis

dw-dengwei/daily-arXiv-ai-enhanced

Automatically crawl arXiv papers daily and summarize them using AI. Illustrating them using GitHub Pages.

5.7 Low AI signal View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of dw-dengwei/daily-arXiv-ai-enhanced, a JavaScript project with 2,901 GitHub stars. SynthScan v2.0 examined 9,847 lines of code across 44 source files, recording 40 pattern matches distributed across 10 syntactic categories. The overall adjusted score of 5.7 places this repository in the Low AI signal band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

5.7
Adjusted Score
5.7
Raw Score
100%
Time Factor
2026-07-14
Last Push
2.9K
Stars
JavaScript
Language
9.8K
Lines of Code
44
Files
40
Pattern Hits
2026-07-14
Scan Date
0.05
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

Longitudinal tracking requires multiple scan runs. Once this repository is re-scanned after new commits land, this chart will visualise how the synthetic code signal evolves over time — enabling you to detect whether AI authorship is growing, stabilising, or being actively corrected by human engineers.

No multi-scan history yet — run the scanner again to build trend data.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 0HIGH 2MEDIUM 4LOW 34

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 40 distinct pattern matches across 10 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Excessive Try-Catch Wrapping11 hits · 13 pts
SeverityFileLineSnippetContext
LOWdaily_arxiv/daily_arxiv/check_stats.py41 except Exception as e:CODE
MEDIUMdaily_arxiv/daily_arxiv/check_stats.py42 print(f"Error reading {file_path}: {e}", file=sys.stderr)CODE
LOWdaily_arxiv/daily_arxiv/check_stats.py59 except Exception as e:CODE
MEDIUMdaily_arxiv/daily_arxiv/check_stats.py60 print(f"Error saving {file_path}: {e}", file=sys.stderr)CODE
LOWdaily_arxiv/daily_arxiv/check_stats.py120 except Exception as e:CODE
LOWdaily_arxiv/daily_arxiv/check_stats.py127 except Exception as e:CODE
LOWai/enhance.py57 except Exception as e:CODE
LOWai/enhance.py90 except Exception:CODE
LOWai/enhance.py146 except Exception as json_e:CODE
LOWai/enhance.py152 except Exception as e:CODE
LOWai/enhance.py203 except Exception as e:CODE
Unused Imports9 hits · 9 pts
SeverityFileLineSnippetContext
LOWdaily_arxiv/daily_arxiv/pipelines.py9CODE
LOWdaily_arxiv/daily_arxiv/pipelines.py10CODE
LOWdaily_arxiv/daily_arxiv/pipelines.py11CODE
LOWdaily_arxiv/daily_arxiv/pipelines.py12CODE
LOWdaily_arxiv/daily_arxiv/pipelines.py12CODE
LOWai/enhance.py7CODE
LOWai/enhance.py8CODE
LOWai/structure.py1CODE
LOWai/structure.py2CODE
Over-Commented Block8 hits · 8 pts
SeverityFileLineSnippetContext
LOWjs/app.js1381 COMMENT
LOWdaily_arxiv/daily_arxiv/middlewares.py81COMMENT
LOWdaily_arxiv/daily_arxiv/settings.py1# Scrapy settings for daily_arxiv projectCOMMENT
LOWdaily_arxiv/daily_arxiv/settings.py21COMMENT
LOWdaily_arxiv/daily_arxiv/settings.py41# "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",COMMENT
LOWdaily_arxiv/daily_arxiv/settings.py61# }COMMENT
LOWdaily_arxiv/daily_arxiv/settings.py81# AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0COMMENT
LOWdaily_arxiv/daily_arxiv/spiders/__init__.py1# This package will contain the spiders of your Scrapy projectCOMMENT
Self-Referential Comments2 hits · 6 pts
SeverityFileLineSnippetContext
MEDIUMdaily_arxiv/daily_arxiv/middlewares.py18 # This method is used by Scrapy to create your spiders.COMMENT
MEDIUMdaily_arxiv/daily_arxiv/middlewares.py65 # This method is used by Scrapy to create your spiders.COMMENT
Synthetic Comment Markers1 hit · 5 pts
SeverityFileLineSnippetContext
HIGHindex.html234 <p>&copy; 2025 daily-arXiv-ai-enhanced | 内容由AI生成,请仔细甄别。若发现不当内容,请通过Issue反应,我们将及时处理。 | The content is generateCODE
Magic Placeholder Names1 hit · 5 pts
SeverityFileLineSnippetContext
HIGHrun.sh21 echo " export OPENAI_API_KEY=\"your-api-key-here\""CODE
Redundant / Tautological Comments3 hits · 4 pts
SeverityFileLineSnippetContext
LOWsetup-local-auth.sh10# Check if .env file existsCOMMENT
LOWsetup-local-auth.sh20# Check if ACCESS_PASSWORD is setCOMMENT
LOWto_md/convert.py49 # Check if all required AI fields are presentCOMMENT
Deep Nesting3 hits · 3 pts
SeverityFileLineSnippetContext
LOWdaily_arxiv/daily_arxiv/check_stats.py16CODE
LOWdaily_arxiv/daily_arxiv/check_stats.py63CODE
LOWdaily_arxiv/daily_arxiv/check_stats.py131CODE
Slop Phrases1 hit · 2 pts
SeverityFileLineSnippetContext
LOWdaily_arxiv/daily_arxiv/pipelines.py3# Don't forget to add your pipeline to the ITEM_PIPELINES settingCOMMENT
Hyper-Verbose Identifiers1 hit · 1 pts
SeverityFileLineSnippetContext
LOWjs/app.js341function matchPapersByKeywordsOrAuthor(papers, keywords, author) {CODE