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feat: Timeline Metrics Recorder#61

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sauravbhattacharya001 wants to merge 1 commit intomasterfrom
feature/timeline-metrics-recorder
Open

feat: Timeline Metrics Recorder#61
sauravbhattacharya001 wants to merge 1 commit intomasterfrom
feature/timeline-metrics-recorder

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@sauravbhattacharya001
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Adds TimelineMetricsRecorder for recording per-step network metrics and analyzing community evolution trends.

What it does

Records graph statistics at each timeline step and provides:

  • Per-step snapshots: node/edge counts, density, degree stats, category breakdowns, new/lost nodes and edges, connected components
  • CSV export: file or string output with proper escaping
  • Trend analysis: peaks, averages, standard deviations across all steps
  • Phase transition detection: automatically identifies growth spikes, contractions, and density shifts (configurable threshold)
  • Category trends: min/max/avg for each relationship type (friends, classmates, etc.)

Files

  • Gvisual/src/gvisual/TimelineMetricsRecorder.java (470 lines)
  • Gvisual/test/gvisual/TimelineMetricsRecorderTest.java (30 tests)

…teps

Adds TimelineMetricsRecorder for recording per-step network metrics
(node/edge counts, density, degree stats, category breakdowns,
new/lost nodes and edges, connected components) and analyzing trends.

Features:
- Per-step snapshot recording with automatic delta tracking
- CSV export (file or string) with proper escaping
- Trend analysis: peaks, averages, std deviations
- Phase transition detection (growth spikes, contractions, density shifts)
- Category-level trend summaries (min/max/avg per relationship type)
- Configurable phase threshold
- 30 JUnit tests

Usage: call recordStep() at each timeline position, then exportCsv()
or analyzeTrends() to get quantitative community evolution data.
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@github-actions github-actions bot added visualization Graph visualization and UI tests Test additions or fixes size/xl labels Mar 10, 2026
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size/xl tests Test additions or fixes visualization Graph visualization and UI

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