IR for Spoken Documents

Table of Contents

IR for Spoken Documents

Informedia Project

Application Areas

News-on-Demand

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 RateExperiments

Average Precision for various transcription methods

Scaling Behavior forAverage Inverse Rank

11-pt Average Precision

Retrieval EffectivenessvsSpeech Accuracy

Summary

Email: alex@cs.cmu.edu

Home Page: //www.cs.cmu.edu/~alex

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