IR for Spoken Documents


Click here to start

Table of Contents

IR for Spoken Documents

Informedia Project

Application Areas


Diagram of the Informedia Process

Sphinx-III Speech Recognizer

Speech Recognition

Information Retrieval Engine

CMU TREC-6 SDR Results

SDR Task Idiosyncrasies

IR Evaluation Metric

Vocabulary Size Experiment (TREC-6 Training Data)

Stemmed Language Models

Confidence Metrics

Confidence Results

N-Best Lists

Effect of Test Size on IR (In-House Development Set)

IR vs Word Error Rate Experiments

Average Precision for various transcription methods

Scaling Behavior for Average Inverse Rank

11-pt Average Precision

Retrieval Effectiveness vs Speech Accuracy


Author: Alexander Hauptmann


Home Page: //

Other information:
Lecture for the Information Retrieval Class 4/7/98