All Outputs (6)

Meta-evaluation of online and offline web search evaluation metrics (2017)
Presentation / Conference Contribution
Chen, Y., Zhou, K., Liu, Y., Zhang, M., & Ma, S. (2017, August). Meta-evaluation of online and offline web search evaluation metrics. Presented at SIGIR '17: 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Tokyo, Shinjuku, Japan

As in most information retrieval (IR) studies, evaluation plays an essential part in Web search research. Both offline and online evaluation metrics are adopted in measuring the performance of search engines. Offline metrics are usually based on rele... Read More about Meta-evaluation of online and offline web search evaluation metrics.

Detecting collusive spamming activities in community question answering (2017)
Presentation / Conference Contribution
Liu, Y., Liu, Y., Zhou, K., Zhang, M., & Ma, S. (2017, April). Detecting collusive spamming activities in community question answering. Presented at 26th International Conference on World Wide Web, Perth, Australia

Community Question Answering (CQA) portals provide rich sources of information on a variety of topics. However, the authenticity and quality of questions and answers (Q&As) has proven hard to control. In a troubling direction, the widespread growth o... Read More about Detecting collusive spamming activities in community question answering.

Does document relevance affect the searcher's perception of time? (2017)
Presentation / Conference Contribution
Luo, C., Liu, Y., Sakai, T., Zhou, K., Zhang, F., Li, X., & Ma, S. (2017, February). Does document relevance affect the searcher's perception of time?. Presented at 10th ACM International Conference on Web Search and Data Mining, Cambridge, UK

Time plays an essential role in multiple areas of Information Retrieval (IR) studies such as search evaluation, user behavior analysis, temporal search result ranking and query understanding. Especially, in search evaluation studies, time is usually... Read More about Does document relevance affect the searcher's perception of time?.

Predicting pre-click quality for native advertisements (2016)
Presentation / Conference Contribution
Zhou, K., Redi, M., Haines, A., & Lalmas, M. (2016, April). Predicting pre-click quality for native advertisements. Presented at 25th International World Wide Web Conference, WWW 2016, Montréal Québec Canada

Native advertising is a speciffic form of online advertising where ads replicate the look-And-feel of their serving plat-form. In such context, providing a good user experience with the served ads is crucial to ensure long-Term user en-gagement. In t... Read More about Predicting pre-click quality for native advertisements.

Incorporating non-sequential behavior into click models (2015)
Presentation / Conference Contribution
Wang, C., Liu, Y., Wang, M., Zhou, K., Nie, J. Y., & Ma, S. (2015, August). Incorporating non-sequential behavior into click models. Presented at SIGIR '15: The 38th International ACM SIGIR conference on research and development in Information Retrieval, Santiago, Chile

© 2015 ACM. Click-through information is considered as a valuable source of users' implicit relevance feedback. As user behavior is usually inuenced by a number of factors such as position, presentation style and site reputation, researchers have pro... Read More about Incorporating non-sequential behavior into click models.

Composite retrieval of heterogeneous web search (2014)
Presentation / Conference Contribution
Bota, H., Zhou, K., Jose, J. M., & Lalmas, M. (2014, April). Composite retrieval of heterogeneous web search. Presented at WWW'14, 23rd international conference on World wide web, Seoul, South Korea

Traditional search systems generally present a ranked list of documents as answers to user queries. In aggregated search systems, results from different and increasingly diverse verticals (image, video, news, etc.) are returned to users. For instance... Read More about Composite retrieval of heterogeneous web search.