Accession Number:

AD1004806

Title:

NUDTSNA at TREC 2015 Microblog Track: A Live Retrieval System Framework for Social Network based on Semantic Expansion and Quality Model

Descriptive Note:

Conference Paper

Corporate Author:

National University of Defense Technology Changsha, Hunan China

Personal Author(s):

• Zhu,Xiang
• Huang,Jiuming
• Zhu,Sheng
• Chen,Ming
• Zhang,Chenlu
• Zhenzhen,Li
• Dongchuan,Huang
• Chengliang,Zhao
• Li,Aiping
• Jia,Yan

Report Date:

2015-11-20

Pagination or Media Count:

7.0

Abstract:

This paper describe our approaches to real-time filtering task in the TREC 2015 Microblog track, including push notifications on a mobile phone task and periodic email digest task. In the push notifications on a mobile phone task, we apply a recommendation framework with rank algorithm and dynamic threshold adjustment which utilizes both semantic content and quality of a tweet. External information extracted from Google search engine and word2vec model based on existing corpus are well incorporated to enhance the understanding of a tweets or a profiles interest. In the email digest task, based on the candidate tweets retrieved from the first task, we calculate the score of a tweet considering semantic features and quality features, all the tweets classified into a topic are ranked by our key word bool logistic model.

Descriptors:

• INFORMATION RETRIEVAL

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE