منابع مشابه
Diversifying Top-K Results
Top-k query processing finds a list of k results that have largest scores w.r.t the user given query, with the assumption that all the k results are independent to each other. In practice, some of the top-k results returned can be very similar to each other. As a result some of the top-k results returned are redundant. In the literature, diversified top-k search has been studied to return k res...
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In order to improve the user search experience, Query Suggestion, a technique for generating alternative queries to Web users, has become an indispensable feature for commercial search engines. However, previous work mainly focuses on suggesting relevant queries to the original query while ignoring the diversity in the suggestions, which will potentially dissatisfy Web users’ information needs....
متن کاملDiversifying Search Results Using Time
For our evaluation setup we considered three categories of history-oriented queries: categories of history-oriented queries : long-lasting wars, recurring events, and famous personalities. For constructing the queries we utilized reliable sources on the Web and data presented in prior research articles [2, 3]. We describe the details next. Queries for long-lasting wars were constructed from the...
متن کاملDiversifying Search Results Using Semantic Resources
In the last years, multimedia content has grown increasingly over the Internet, especially in social networks (like Facebook or Flickr), where users often post images using their mobile devices. In these networks, the content is later used in search operations, when some users want to find something using a specific query. Nowadays, searching into these networks is primarily made using the titl...
متن کاملTop k Knapsack Joins and Closure Preliminary Results
We call knapsack join (KS-Join) the join under the condition that the sum of the join attributes is at most some constant. The knapsack closure is the related transitive closure. Both operations appear interesting to the financial community. The constant is typically a budget. The join attributes are possible expenditures, to be chosen from large sets. Usually only the Top k tuples of the KS-Jo...
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ژورنال
عنوان ژورنال: Proceedings of the VLDB Endowment
سال: 2012
ISSN: 2150-8097
DOI: 10.14778/2350229.2350233