Table of Contents
MITRE TDT-2000 Segmentation System
MITRE Segmentation Systems
Story length profiles
HMM: initial topology
Features - TDT-3
TDT-2000: Coherence Features
Features - coherence
Trigger Features
Trigger Features (cont.)
HMM: reduced end-of-story states
HMM - current version: no end-of-story states
Probability estimation problem:
Probability estimation - smoothing:
Parameter estimation - transition probabilities
Non-parametric estimation: observation probs
Segmentation
segmentation performance (ABC_WNT)
Visualization: effect of observation values on segmentation
Visualization: effect of X-DURATION
Results
Future work
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