Proceedings of the Second International Workshop on Exploratory Search in Databases and the Web最新文献

Preferential Diversity 优惠的多样性

Proceedings of the Second International Workshop on Exploratory Search in Databases and the Web Pub Date : 2015-05-31 DOI: 10.1145/2795218.2795224

Xiaoyu Ge, Panos K. Chrysanthis, Alexandros Labrinidis

{"title":"Preferential Diversity","authors":"Xiaoyu Ge, Panos K. Chrysanthis, Alexandros Labrinidis","doi":"10.1145/2795218.2795224","DOIUrl":"https://doi.org/10.1145/2795218.2795224","url":null,"abstract":"The ever increasing supply of data is bringing a renewed attention to query personalization. Query personalization is a technique that utilizes user preferences with the goal of providing relevant results to the users. Along with preferences, diversity is another important aspect of query personalization especially useful during data exploration. The goal of result diversification is to reduce the amount of redundant information included in the results. Most previous approaches of result diversification focus solely on generating the most diverse results, which do not take user preferences into account. In this paper, we propose a novel framework called Preferential Diversity (PrefDiv) that aims to support both relevancy and diversity of user query results. PrefDiv utilizes user preference models that return ranked results and reduces the redundancy of results in an efficient and flexible way. PrefDiv maintains the balance between relevancy and diversity of the query results by providing users with the ability to control the trade-off between the two. We describe an implementation of PrefDiv on top of the HYPRE preference model, which allows users to specify both qualitative and quantitative preferences and unifies them using the concept of preference intensities. We experimentally evaluate its performance by comparing with state-of-the-art diversification techniques; our results indicate that PrefDiv achieves significantly better balance between diversity and relevance.","PeriodicalId":211132,"journal":{"name":"Proceedings of the Second International Workshop on Exploratory Search in Databases and the Web","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128370458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Method of Complex Event Processing over XML Streams XML流上的复杂事件处理方法

Proceedings of the Second International Workshop on Exploratory Search in Databases and the Web Pub Date : 2015-05-31 DOI: 10.1145/2795218.2795220

Tatsuki Matsuda, Yuki Uchida, Satoru Fujita

{"title":"Method of Complex Event Processing over XML Streams","authors":"Tatsuki Matsuda, Yuki Uchida, Satoru Fujita","doi":"10.1145/2795218.2795220","DOIUrl":"https://doi.org/10.1145/2795218.2795220","url":null,"abstract":"This paper describes a query processing engine for multiple continuous XML data streams with correlated data as a notification mechanism for navigating data exploration. Stream processing, including formal models for stream filtering, union, activation, decomposition, and partition, is formulated in algebraic expressions. In addition, a query language, called QLMXS, over XML streams for complex event processing is described. QLMXS supports all functions of the algebraic expressions in a SQL-like form. QLMXS queries are converted into a visibly pushdown automaton (VPA) that analyzes complex event data from the XML streams. The VPA engine concurrently processes multiple XML data on multiple levels; therefore, it is very important to tune the performance of the engine. Four optimization methods are proposed to improve performance by utilizing VPA and XML features: VPA-state reduction, VPA unification, delayed evaluation, and elimination of unnecessary XML processing. Experimental results demonstrate that VPA unification increases the processing speed of the VPA engine 1.6 times, and the overall processing speed is increased 2.6 times.","PeriodicalId":211132,"journal":{"name":"Proceedings of the Second International Workshop on Exploratory Search in Databases and the Web","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128381011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Data Like This: Ranked Search of Genomic Data Vision Paper 像这样的数据:基因组数据视觉论文的排名搜索

Proceedings of the Second International Workshop on Exploratory Search in Databases and the Web Pub Date : 2015-05-31 DOI: 10.1145/2795218.2795221

V. M. Megler, D. Maier, D. Bottomly, Libbey White, S. McWeeney, B. Wilmot

引用次数: 2

Diversifying with Few Regrets, But too Few to Mention 没有遗憾的多样化，但太少了

Proceedings of the Second International Workshop on Exploratory Search in Databases and the Web Pub Date : 2015-05-31 DOI: 10.1145/2795218.2795225

Zaeem Hussain, Hina A. Khan, M. Sharaf

引用次数: 10