This lecture is intended to serve as an introduction to Information Retrieval (IR) effectiveness
metrics and their usage in IR experiments using test collections. Evaluation metrics are …

Different important studies in Web search results clustering have recently shown increasing
performances motivated by the use of external resources. Following this trend, we present a …

How to understand intents behind user queries is crucial towards improving the performance
of Web search systems. NTCIR-11 IMine task focuses on this problem. In this paper, we …

Generally, users are reserved in describing their search intention when submitting queries
into the search engine. Therefore, a large number of search queries are usually short …

Most of the existing Information Retrieval (IR) metrics discount the value of each retrieved
relevant document based on its rank. This statement also applies to the evaluation of …

To construct a diversified search test collection, a set of possible subtopics (or intents) needs
to be determined for each topic, in one way or another, and perintent relevance …

Information retrieval systems aim to generate Search Engine Results Pages (SERP), which
are web pages automatically generated by a search engine according to the keywords …

信息检索系统不仅需要考虑文档的相关性, 还要考虑文档的多样性和新颖性.
针对信息检索结果的多元化问题, 探讨了数据融合方法在搜索结果多元化上的适用性 …

The major evolution of the search engine is to understand the user's query and user's intent.
The other size change and you all know, is the evolution of the mobile query. Indeed …

The major evolution of the search engine is to understand the user's query and the intention
of the user. The other change in size and all of you is the evolution of the mobile query …