Search Results for author: Lan Yanyan

Found 4 papers, 0 papers with code

Beyond Precision: A Study on Recall of Initial Retrieval with Neural Representations

no code implementations22 Jul 2018 Xiao Yan, Guo Jiafeng, Fan Yixing, Lan Yanyan, Xu Jun, Cheng Xueqi

Our experiments show that both hybrid index and search schemes can improve the recall of the initial retrieval stage with small overhead.

Information Retrieval Re-Ranking

Learning Visual Features from Snapshots for Web Search

no code implementations19 Oct 2017 Fan Yixing, Guo Jiafeng, Lan Yanyan, Xu Jun, Pang Liang, Cheng Xueqi

In this work, we propose to learn rich visual features automatically from the layout of Web pages (i. e., Web page snapshots) for relevance ranking.

Learning-To-Rank

Topic-focused Dynamic Information Filtering in Social Media

no code implementations20 Apr 2015 Zhu Yadong, Lan Yanyan, Guo Jiafeng, Cheng Xueqi

For a hot topic, new opinions or ideas will be continuously produced in the form of online data stream.

Structural Learning of Diverse Ranking

no code implementations20 Apr 2015 Zhu Yadong, Lan Yanyan, Guo Jiafeng, Cheng Xueqi

Compared with traditional methods, the advantages of our approach lie in that: (1) Directly optimizing DCEM as the loss function is more fundamental for the task; (2) Our framework does not rely on explicit diversity information such as subtopics, thus is more adaptive to real application; (3) The representation of diversity as the feature-based scoring function is more flexible to incorporate rich diversity-based features into the learning framework.

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