---name: indexion-segmentdescription: Split text into contextual chunks for RAG/embedding pipelines. Document segmentation and section extraction using window, tfidf, punctuation, or hybrid strategies chosen by intent.---

indexion segment

Split text into contextual segments using divergence-based, TF-IDF, or punctuation strategies.

When to Use

• User needs to chunk text for RAG or embedding pipelines
• User wants to split a document into meaningful sections
• User asks to segment text for processing
• Preparing text for similarity analysis at sub-document level

Usage

# Default window divergence strategy
indexion segment <input-file> <output-dir>

# TF-IDF based segmentation
indexion segment --strategy=tfidf <input-file> <output-dir>

# Punctuation-based segmentation
indexion segment --strategy=punctuation <input-file> <output-dir>

# Custom segment sizes
indexion segment --min-size=200 --max-size=3000 --target-size=800 document.txt output/

# Custom divergence threshold
indexion segment --threshold=0.5 document.txt output/

# Adaptive threshold mode (default)
indexion segment --adaptive document.txt output/

# Hybrid NCD+TF-IDF mode
indexion segment --hybrid --ncd-weight=0.6 --tfidf-weight=0.4 document.txt output/

# Custom window size
indexion segment --window-size=5 document.txt output/

# Custom output prefix
indexion segment --prefix=chunk document.txt output/

Options

Option	Default	Description
--strategy=NAME	window	Strategy: window, tfidf, punctuation
--min-size=INT	100	Minimum segment characters
--max-size=INT	2000	Maximum segment characters
--target-size=INT	500	Target segment characters
--threshold=FLOAT	0.42	Divergence threshold
--window-size=INT	3	Window size
--adaptive	true	Adaptive threshold mode
--hybrid	false	NCD+TF-IDF hybrid mode
--ncd-weight=FLOAT	0.5	NCD weight in hybrid mode
--tfidf-weight=FLOAT	0.5	TF-IDF weight in hybrid mode
--prefix=NAME	segment	Output file prefix

Strategies

Strategy	Description
window (default)	Sliding window divergence detection
tfidf	TF-IDF based topic change detection
punctuation	Punctuation/sentence boundary based

Workflow

1. Run indexion segment <input-file> <output-dir> to split text with defaults
2. Adjust --threshold and --target-size to tune segmentation granularity
3. Use --hybrid mode for better accuracy on mixed-content documents