{"id":155683,"date":"2006-05-01T00:00:00","date_gmt":"2006-05-01T00:00:00","guid":{"rendered":"https:\/\/new-cm-edgedigital.pages.dev\/en-us\/research\/msr-research-item\/pruning-analysis-for-the-position-specific-posterior-lattices-for-spoken-document-search\/"},"modified":"2018-10-16T20:04:52","modified_gmt":"2018-10-17T03:04:52","slug":"pruning-analysis-for-the-position-specific-posterior-lattices-for-spoken-document-search","status":"publish","type":"msr-research-item","link":"https:\/\/new-cm-edgedigital.pages.dev\/en-us\/research\/publication\/pruning-analysis-for-the-position-specific-posterior-lattices-for-spoken-document-search\/","title":{"rendered":"Pruning Analysis for the Position Specific Posterior Lattices for Spoken Document Search"},"content":{"rendered":"<div class=\"asset-content\">\n<p>The paper presents the Position Specific Posterior Lattice (PSPL), a novel lossy representation of automatic speech recognition lattices that naturally lends itself to efficient indexing and subsequent relevance ranking of spoken documents. Two pruning techniques for generating word lattices are explored in this framework, where experiments performed on a collection of lecture recordings \u2014 MIT iCampus database \u2014 show that the spoken document ranking accuracy was improved by 20%\u2014in the mean average precision sense\u2014relative over the commonly used baseline of indexing the 1-best output from an automatic speech recognizer (ASR).<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The paper presents the Position Specific Posterior Lattice (PSPL), a novel lossy representation of automatic speech recognition lattices that naturally lends itself to efficient indexing and subsequent relevance ranking of spoken documents. Two pruning techniques for generating word lattices are explored in this framework, where experiments performed on a collection of lecture recordings \u2014 MIT [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","msr-author-ordering":null,"msr_publishername":"","msr_publisher_other":"","msr_booktitle":"","msr_chapter":"","msr_edition":"Proc. of the Int. Conf. on Acoustics, Speech, and Signal Processing","msr_editors":"","msr_how_published":"","msr_isbn":"","msr_issue":"","msr_journal":"","msr_number":"","msr_organization":"","msr_pages_string":"","msr_page_range_start":"","msr_page_range_end":"","msr_series":"","msr_volume":"","msr_copyright":"","msr_conference_name":"Proc. of the Int. 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