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- research-articleOctober 2021Honorable Mention
Conceptualizing Hyperlocal Information Systems for Developing Countries
Proceedings of the ACM on Human-Computer Interaction (PACMHCI), Volume 5, Issue CSCW2Article No.: 365, Pages 1–26https://doi.org/10.1145/3479509Hyperlocal information systems cater to the needs of the people in a well-defined geographical area. Such information systems are ubiquitously accessible to the users in the developed world through their mobile phones. In developing countries hyperlocal ...
- abstractApril 2020
Socially-Informed Sorting for Guiding Personal Finance Choices
CHI EA '20: Extended Abstracts of the 2020 CHI Conference on Human Factors in Computing SystemsApril 2020, Pages 1–9https://doi.org/10.1145/3334480.3382898Planning for personal financial security is complex, and better-informed investors are likely to make better investment choices. However, the number of alternatives presented by most personal finance platforms pose novices a dual challenge of choice ...
- short-paperNovember 2019
Query Embedding Learning for Context-based Social Search
CIKM '19: Proceedings of the 28th ACM International Conference on Information and Knowledge ManagementNovember 2019, Pages 2441–2444https://doi.org/10.1145/3357384.3358066Recommending individuals through keywords is an essential and common search task in online social platforms such as Facebook and LinkedIn. However, it is often that one has only the impression about the desired targets, depicted by labels of social ...
- research-articleAugust 2019
A Roadmap to User-Controllable Social Exploratory Search
ACM Transactions on Interactive Intelligent Systems (TIIS), Volume 10, Issue 1Article No.: 8, Pages 1–38https://doi.org/10.1145/3241382Information-seeking tasks with learning or investigative purposes are usually referred to as exploratory search. Exploratory search unfolds as a dynamic process where the user, amidst navigation, trial and error, and on-the-fly selections, gathers and ...
- research-articleJuly 2019
Social Knowledge Graph Explorer
SIGIR'19: Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information RetrievalJuly 2019, Pages 1317–1320https://doi.org/10.1145/3331184.3331410We present SKG Explorer, an application for querying and browsing a social knowledge graph derived from Twitter that contains relationships between entities, links, and topics. A temporal dimension is also added for generating timelines for well-known ...
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- research-articleJuly 2019
GraphSE²: An Encrypted Graph Database for Privacy-Preserving Social Search
Asia CCS '19: Proceedings of the 2019 ACM Asia Conference on Computer and Communications SecurityJuly 2019, Pages 41–54https://doi.org/10.1145/3321705.3329803In this paper, we propose GraphSE\textsuperscript2, an encrypted graph database for online social network services to address massive data breaches. GraphSE\textsuperscript2 ~preserves the functionality of social search, a key enabler for quality social ...
- research-articleMarch 2018
A Study on User-Controllable Social Exploratory Search
IUI '18: Proceedings of the 23rd International Conference on Intelligent User InterfacesMarch 2018, Pages 353–364https://doi.org/10.1145/3172944.3172986Information-seeking tasks with learning or investigative purposes are usually referred to as exploratory search. Exploratory search unfolds as a dynamic process where the user, amidst navigation, trial-and-error and on-the-fly selections, gathers and ...
- research-articleNovember 2017
Learning to Un-Rank: Quantifying Search Exposure for Users in Online Communities
CIKM '17: Proceedings of the 2017 ACM on Conference on Information and Knowledge ManagementNovember 2017, Pages 267–276https://doi.org/10.1145/3132847.3133040Search engines in online communities such as Twitter or Facebook not only return matching posts, but also provide links to the profiles of the authors. Thus, when a user appears in the top-k results for a sensitive keyword query, she becomes widely ...
- research-articleJune 2017
What's Happening and What Happened: Searching the Social Web
WebSci '17: Proceedings of the 2017 ACM on Web Science ConferenceJune 2017, Pages 191–200https://doi.org/10.1145/3091478.3091484Every day millions of users share links and post comments on different social networks. At scale, this behavior can be very useful for building a new type of search engine that exploits relevant links and their associated metadata in a temporal fashion. ...
- abstractMay 2017
Opportunities to Address Information Poverty with Social Search
CHI EA '17: Proceedings of the 2017 CHI Conference Extended Abstracts on Human Factors in Computing SystemsMay 2017, Pages 2224–2231https://doi.org/10.1145/3027063.3053167Information seeking is a central part of human life, and search engines are the dominant method of information seeking on the Internet. Although recent years have seen the rise of social search systems as a promising alternative, their application for ...
- research-articleOctober 2016
Pienapple search: an integrated search interface to support finding, refinding and sharing
ASIST '16: Proceedings of the 79th ASIS&T Annual Meeting: Creating Knowledge, Enhancing Lives through Information & TechnologyOctober 2016, Article No.: 122, Pages 1–5Pienapple is a search interface that aims to combine bookmarking and searching within a blended experience to facilitate improved access, serendipity, and sharing. While personal and social bookmarking platforms already exist, they are often separated ...
- research-articleNovember 2015
Social search behavior in a social Q&A service: goals, strategies, and outcomes
ASIST '15: Proceedings of the 78th ASIS&T Annual Meeting: Information Science with Impact: Research in and for the CommunityNovember 2015, Article No.: 39, Pages 1–10Recent advancements in social technologies allow information seekers to reach out to a larger, more distributed group of people online when searching for information. In this study, people's question-asking behavior using a social Q&A service is ...
- research-articleNovember 2015
Information Seeking and Responding Networks in Physical Gatherings: A Case Study of Academic Conferences in Twitter
COSN '15: Proceedings of the 2015 ACM on Conference on Online Social NetworksNovember 2015, Pages 197–208https://doi.org/10.1145/2817946.2817960With the allure of immediacy, social media like Twitter have been widely used in physical gatherings as a ``backchannel'' to facilitate the conversations among participants. Studies have been centered around identifying the characteristics of such ...
- invited-talkAugust 2015
WeChat Search & Headline: Sogou Joins Force with Tencent on Mobile Search
SIGIR '15: Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information RetrievalAugust 2015, Page 1079https://doi.org/10.1145/2766462.2776781Tencent Inc. is the biggest social network company in China. Its WeChat and QQ boast of 700 million and 800 million monthly active users (MAU), respectively. Sogou Inc., on the other hand, is a search leader in China, being the No. 2 and No. 3 on mobile/...
- Work in ProgressApril 2015
A Taxonomy for Classifying Questions Asked in Social Question and Answering
CHI EA '15: Proceedings of the 33rd Annual ACM Conference Extended Abstracts on Human Factors in Computing SystemsApril 2015, Pages 1947–1952https://doi.org/10.1145/2702613.2732928The rapid advancement of Web2.0 technologies has made social networking sites, such as Facebook and twitter, important venues for individuals to seek and share information. As understanding the information needs of users is crucial for designing and ...
- courseApril 2015
Design for Searching & Finding
CHI EA '15: Proceedings of the 33rd Annual ACM Conference Extended Abstracts on Human Factors in Computing SystemsApril 2015, Pages 2457–2458https://doi.org/10.1145/2702613.2706692Modern user interfaces often contain a search or find components so the user can search for content in the context of the application. While there are common practices, what actually works best in these situations? What kinds of search tasks are the ...
- research-articleNovember 2014
Enabling Social Search in Time through Graphs
Web-KR '14: Proceedings of the 5th International Workshop on Web-scale Knowledge Representation Retrieval & ReasoningNovember 2014, Pages 59–62https://doi.org/10.1145/2663792.2663802Recently, social networks have attracted considerable attention. The huge volume of information contained in them, as well as their dynamic nature, make the problem of searching social data challenging. In this work, we envision the design of a complete ...
- research-articleOctober 2014
An efficient mobile social search method
RACS '14: Proceedings of the 2014 Conference on Research in Adaptive and Convergent SystemsOctober 2014, Pages 82–85https://doi.org/10.1145/2663761.2664238With the rapid development of internet technology, social networks and social searches are becoming popularly. Unlike traditional web searches, the social search provides optimal search results according to user preferences. In this paper, we propose a ...
- research-articleAugust 2014
FAST-PPR: scaling personalized pagerank estimation for large graphs
KDD '14: Proceedings of the 20th ACM SIGKDD international conference on Knowledge discovery and data miningAugust 2014, Pages 1436–1445https://doi.org/10.1145/2623330.2623745We propose a new algorithm, FAST-PPR, for computing personalized PageRank: given start node s and target node t in a directed graph, and given a threshold δ, it computes the Personalized PageRank π_s(t) from s to t, guaranteeing that the relative error ...