430 search results - page 51 / 86 » Contextual Ranking of Keywords Using Click Data |
IR
2010
14 years 8 months ago
2010
Abstract We present a new ranking algorithm that combines the strengths of two previous methods: boosted tree classification, and LambdaRank, which has been shown to be empiricall...
WWW
2009
ACM
15 years 10 months ago
2009
ACM
Social tagging provides valuable and crucial information for large-scale web image retrieval. It is ontology-free and easy to obtain; however, irrelevant tags frequently appear, a...
TOCHI
2010
14 years 8 months ago
2010
Current Web search tools do a good job of retrieving documents that satisfy the wide range of intentions that people associate with a query – but do not do a very good job of di...
SIGMOD
2010
ACM
14 years 9 months ago
2010
ACM
Automated extraction of structured data from Web sources often leads to large heterogeneous knowledge bases (KB), with data and schema items numbering in the hundreds of thousands...
AIED
2009
Springer
15 years 4 months ago
2009
Springer
A basic question of instruction is how effective it is in promoting student learning. This paper presents a study determining the relative efficacy of different instructional conte...