Confidence measurement techniques in automatic speech recognition and dialog management:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Tönning [u.a.]
<<Der>> Andere Verl.
2008
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | XIII, 124 S. graph. Darst. |
| ISBN: | 9783899597554 |
Internformat
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| 245 | 1 | 0 | |a Confidence measurement techniques in automatic speech recognition and dialog management |c Tibor Fabian |
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Datensatz im Suchindex
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| adam_text | CONTENTS GLOSSARY XI LIST OF TABLES XII LIST OF FIGURES XIII 1
INTRODUCTION 1 1.1 MOTIVATION, FIELD OF APPLICATION 4 1.2 THESIS
OVERVIEW 6 2 HMM-BASED SPEECH RECOGNITION 9 2.1 ACOUSTIC MODCLING 11
2.1.1 FEATURE EXTRACTION 13 2.1.2 TRAINING OF HMMS 15 2.2 LANGUAGE
MODELING 17 2.3 VITERBI SEARCH 19 2.3.1 VITERBI ALGORITHM 19 2.3.2
PRUNING 22 2.4 THE WORD GRAPH 22 2.5 PROBLEMS, WEAKNESSES 24 3
CONFIDENCE MEASUREMENT TECHNIQUES 27 3.1 CLASAIFICATION OF METHODS 27
3.2 CONFIDENCE PREDICTOR FEATURES 29 3.3 FUSION OF PREDICTOR FEATURES 31
3.4 POSTERIOR PROBABILITY AS CONFIDENCE MCASURE 33 3.4.1 COMPUTATION OF
POSTERIOR PROBABILITY ON WORD GRAPH . . 34 3.4.2 CONSIDERING TIME
AHGNMENT WITH SIMPLE ACCUMULATION . 41 3.4.3 CONSIDERING TIME AHGNMENT
AS CONSCNSUS HYPOTHESIS . . 43 3.4.4 SUMMARY 45 3.5 CM FOR SEMANTIC
INTERPRETATION 46 3.6 UTILIZATION OF CONFIDENCE MEASUREMENT 48 GESCANNT
DURCH BIBLIOGRAFISCHE INFORMATIONEN HTTP://D-NB.INFO/989056376
DIGITALISIERT DURCH INDEX 117 CONTENTS 3.6.1 RESCORIRIG ARID PRUNIRIG 48
3.6.2 REJECTION TECHNIQUES 49 3.6.3 ADAPTATION METHODS 51 3.7 IINPACT OF
LATTICE DENSITY, EVALUATION RESULTS 52 3.7.1 EVALUATION QUANTITIES 52
3.7.2 EXPERIMENTAL SETUP 53 3.7.3 RESULTS OF SIMPLE ACCUMULATION METHOD
54 3.7.4 RESULTS OF CONSENSUS HYPOTHESIS METHOD 55 3.7.5 SUMMARY 57 3.8
LIMITATIONS 58 4 CONFLDENCE-GUIDED PRUNING 59 4.1 THE CONFIDENCE MEASURE
60 4.1.1 NORMALIZED LOG LIKELIHOOD SCORE 61 4.1.2 OBSERVATION
PROBABILITY IN HMM NETWORKS 66 4.2 EXPERIMENTS AND RESULTS 70 4.3
COMPARISON WITH THE ADAPTIVE TECHNIQUE 72 4.3.1 ADAPTIVE CONTROL DYNAMIC
PRUNING 73 4.3.2 CGD VERSUS ACD PRUNING 74 4.3.3 COMPARISON RESULTS 76
4.4 SUMMARY 78 5 HUMAN-MACHINE DIALOG CONTROL 79 5.1 SPEECH-BASED
INTERACTION 80 5.2 SORRY, I STILL DIDN T CATCH THAT 83 5.3 IMPORTANCE
OF CONFIDENCE MEASUREMENT 86 5.3.1 APPROACHES TO DIALOG FLOW CONTROL 88
5.3.2 THE USE OF ADDITIONAL KNOWLEDGE SOURCES 89 6 CONCLUSION AND
OUTLOOK 93 APPENDIX A THE ROC CURVE 99 APPENDIX B GRAMMAR EXAMPLES 105
BIBLIOGRAPHY 107
|
| adam_txt |
CONTENTS GLOSSARY XI LIST OF TABLES XII LIST OF FIGURES XIII 1
INTRODUCTION 1 1.1 MOTIVATION, FIELD OF APPLICATION 4 1.2 THESIS
OVERVIEW 6 2 HMM-BASED SPEECH RECOGNITION 9 2.1 ACOUSTIC MODCLING 11
2.1.1 FEATURE EXTRACTION 13 2.1.2 TRAINING OF HMMS 15 2.2 LANGUAGE
MODELING 17 2.3 VITERBI SEARCH 19 2.3.1 VITERBI ALGORITHM 19 2.3.2
PRUNING 22 2.4 THE WORD GRAPH 22 2.5 PROBLEMS, WEAKNESSES 24 3
CONFIDENCE MEASUREMENT TECHNIQUES 27 3.1 CLASAIFICATION OF METHODS 27
3.2 CONFIDENCE PREDICTOR FEATURES 29 3.3 FUSION OF PREDICTOR FEATURES 31
3.4 POSTERIOR PROBABILITY AS CONFIDENCE MCASURE 33 3.4.1 COMPUTATION OF
POSTERIOR PROBABILITY ON WORD GRAPH . . 34 3.4.2 CONSIDERING TIME
AHGNMENT WITH SIMPLE ACCUMULATION . 41 3.4.3 CONSIDERING TIME AHGNMENT
AS CONSCNSUS HYPOTHESIS . . 43 3.4.4 SUMMARY 45 3.5 CM FOR SEMANTIC
INTERPRETATION 46 3.6 UTILIZATION OF CONFIDENCE MEASUREMENT 48 GESCANNT
DURCH BIBLIOGRAFISCHE INFORMATIONEN HTTP://D-NB.INFO/989056376
DIGITALISIERT DURCH INDEX 117 CONTENTS 3.6.1 RESCORIRIG ARID PRUNIRIG 48
3.6.2 REJECTION TECHNIQUES 49 3.6.3 ADAPTATION METHODS 51 3.7 IINPACT OF
LATTICE DENSITY, EVALUATION RESULTS 52 3.7.1 EVALUATION QUANTITIES 52
3.7.2 EXPERIMENTAL SETUP 53 3.7.3 RESULTS OF SIMPLE ACCUMULATION METHOD
54 3.7.4 RESULTS OF CONSENSUS HYPOTHESIS METHOD 55 3.7.5 SUMMARY 57 3.8
LIMITATIONS 58 4 CONFLDENCE-GUIDED PRUNING 59 4.1 THE CONFIDENCE MEASURE
60 4.1.1 NORMALIZED LOG LIKELIHOOD SCORE 61 4.1.2 OBSERVATION
PROBABILITY IN HMM NETWORKS 66 4.2 EXPERIMENTS AND RESULTS 70 4.3
COMPARISON WITH THE ADAPTIVE TECHNIQUE 72 4.3.1 ADAPTIVE CONTROL DYNAMIC
PRUNING 73 4.3.2 CGD VERSUS ACD PRUNING 74 4.3.3 COMPARISON RESULTS 76
4.4 SUMMARY 78 5 HUMAN-MACHINE DIALOG CONTROL 79 5.1 SPEECH-BASED
INTERACTION 80 5.2 "SORRY, I STILL DIDN'T CATCH THAT" 83 5.3 IMPORTANCE
OF CONFIDENCE MEASUREMENT 86 5.3.1 APPROACHES TO DIALOG FLOW CONTROL 88
5.3.2 THE USE OF ADDITIONAL KNOWLEDGE SOURCES 89 6 CONCLUSION AND
OUTLOOK 93 APPENDIX A THE ROC CURVE 99 APPENDIX B GRAMMAR EXAMPLES 105
BIBLIOGRAPHY 107 |
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| discipline | Informatik Elektrotechnik |
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| language | English |
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| spelling | Fábián, Tibor Verfasser aut Confidence measurement techniques in automatic speech recognition and dialog management Tibor Fabian Tönning [u.a.] <<Der>> Andere Verl. 2008 XIII, 124 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Zugl.: München, Techn. Univ., Diss., 2008 Automatische Spracherkennung (DE-588)4003961-4 gnd rswk-swf Bereichsschätzung (DE-588)4140553-5 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Automatische Spracherkennung (DE-588)4003961-4 s Bereichsschätzung (DE-588)4140553-5 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=016674958&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Fábián, Tibor Confidence measurement techniques in automatic speech recognition and dialog management Automatische Spracherkennung (DE-588)4003961-4 gnd Bereichsschätzung (DE-588)4140553-5 gnd |
| subject_GND | (DE-588)4003961-4 (DE-588)4140553-5 (DE-588)4113937-9 |
| title | Confidence measurement techniques in automatic speech recognition and dialog management |
| title_auth | Confidence measurement techniques in automatic speech recognition and dialog management |
| title_exact_search | Confidence measurement techniques in automatic speech recognition and dialog management |
| title_exact_search_txtP | Confidence measurement techniques in automatic speech recognition and dialog management |
| title_full | Confidence measurement techniques in automatic speech recognition and dialog management Tibor Fabian |
| title_fullStr | Confidence measurement techniques in automatic speech recognition and dialog management Tibor Fabian |
| title_full_unstemmed | Confidence measurement techniques in automatic speech recognition and dialog management Tibor Fabian |
| title_short | Confidence measurement techniques in automatic speech recognition and dialog management |
| title_sort | confidence measurement techniques in automatic speech recognition and dialog management |
| topic | Automatische Spracherkennung (DE-588)4003961-4 gnd Bereichsschätzung (DE-588)4140553-5 gnd |
| topic_facet | Automatische Spracherkennung Bereichsschätzung Hochschulschrift |
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