{"title":"基于PLSA的无监督语境关键词相关学习与测量","authors":"S. Sudarsun, Dalou Kalaivendhan, M. Venkateswarlu","doi":"10.1109/INDCON.2006.302787","DOIUrl":null,"url":null,"abstract":"In this paper, we have developed a probabilistic approach using PLSA for the discovery and analysis of contextual keyword relevance based on the distribution of keywords across a training text corpus. We have shown experimentally, the flexibility of this approach in classifying keywords into different domains based on their context. We have developed a prototype system that allows us to project keyword queries on the loaded PLSA model and returns keywords that are closely correlated. The keyword query is vectorized using the PLSA model in the reduce aspect space and correlation is derived by calculating a dot product. We also discuss the parameters that control PLSA performance including a) number of aspects, b) number of EM iterations c) weighting functions on TDM (pre-weighting). We have estimated the quality through computation of precision-recall scores. We have presented our experiments on PLSA application towards document classification","PeriodicalId":122715,"journal":{"name":"2006 Annual IEEE India Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Unsupervised Contextual Keyword Relevance Learning and Measurement using PLSA\",\"authors\":\"S. Sudarsun, Dalou Kalaivendhan, M. Venkateswarlu\",\"doi\":\"10.1109/INDCON.2006.302787\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, we have developed a probabilistic approach using PLSA for the discovery and analysis of contextual keyword relevance based on the distribution of keywords across a training text corpus. We have shown experimentally, the flexibility of this approach in classifying keywords into different domains based on their context. We have developed a prototype system that allows us to project keyword queries on the loaded PLSA model and returns keywords that are closely correlated. The keyword query is vectorized using the PLSA model in the reduce aspect space and correlation is derived by calculating a dot product. We also discuss the parameters that control PLSA performance including a) number of aspects, b) number of EM iterations c) weighting functions on TDM (pre-weighting). We have estimated the quality through computation of precision-recall scores. We have presented our experiments on PLSA application towards document classification\",\"PeriodicalId\":122715,\"journal\":{\"name\":\"2006 Annual IEEE India Conference\",\"volume\":\"12 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2006-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2006 Annual IEEE India Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/INDCON.2006.302787\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2006 Annual IEEE India Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/INDCON.2006.302787","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Unsupervised Contextual Keyword Relevance Learning and Measurement using PLSA
In this paper, we have developed a probabilistic approach using PLSA for the discovery and analysis of contextual keyword relevance based on the distribution of keywords across a training text corpus. We have shown experimentally, the flexibility of this approach in classifying keywords into different domains based on their context. We have developed a prototype system that allows us to project keyword queries on the loaded PLSA model and returns keywords that are closely correlated. The keyword query is vectorized using the PLSA model in the reduce aspect space and correlation is derived by calculating a dot product. We also discuss the parameters that control PLSA performance including a) number of aspects, b) number of EM iterations c) weighting functions on TDM (pre-weighting). We have estimated the quality through computation of precision-recall scores. We have presented our experiments on PLSA application towards document classification