name: text-summarizer description: Extractive AI text summarizer. Automatically extracts the most important sentences from any text using a hybrid TextRank + TF-IDF algorithm.

Text Summarizer

Condenses long text into a concise summary by extracting the most important sentences. Works on articles, research papers, reports, meeting notes, emails, and any long document. Zero hallucination risk since it extracts exact sentences from the original.

Use Cases

the user pastes text or a file and asks to summarize, shorten, condense, or extract key points; the user wants to turn a long article/paper/report/notes into a brief overview; the user says 'summarize this', 'TL;DR', 'key points', 'condense', 'extract main ideas'. Supports adjustable length (short 20% / medium 30% / long 50%) and two output formats (bullet points or flowing paragraph).

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Quick Start

Default (bullet points, medium length):

summarize.py --text "<paste your text here>"

Paragraph format:

summarize.py --text "<text>" --format paragraph

Short summary (20% of original):

summarize.py --text "<text>" --length short

From a file:

summarize.py input.txt
summarize.py input.txt --length long --format paragraph

Algorithm

See references/algorithms.md for full details on the hybrid TextRank + TF-IDF approach.

TL;DR: The script scores every sentence by (1) TF-IDF term importance and (2) TextRank graph-based importance, then returns the top-ranked sentences. No AI generation — exact sentences from the original are extracted, so there is zero hallucination risk.

Length Presets

Output Formats

• bullet (default): One extracted sentence per line, prefixed with •
• paragraph: A single flowing paragraph of extracted sentences

What to Summarize

• Articles and blog posts
• Research papers and academic abstracts
• Reports and white papers
• Meeting notes and transcripts
• Long email threads
• Any prose document

Limitations

• Optimized for English prose. Code, tables, and structured data are treated as plain text.
• Returns original text unchanged if the input has 2 or fewer sentences.
• Single-document only (one article at a time).

整體質量較好，工具能穩定地將長文本壓縮為核心要點，且不會胡編亂造。文件清晰易懂，引數配置靈活（短/中/長三種長度，段落或要點兩種格式），上手容易。最大的侷限是隻能處理英文內容，對中文使用者實用性有限；另外對於程式碼、表格等特殊內容的處理比較粗糙。適合對英文文章做快速摘要，但期望更高精度或多語言支援的使用者可能會失望。