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- posterMarch 2024
Scaling Collaborative Learning: Using the Community Digital Library to Enrich Course Content
SIGCSE 2024: Proceedings of the 55th ACM Technical Symposium on Computer Science Education V. 2March 2024, Pages 1798–1799https://doi.org/10.1145/3626253.3635583The ability for a student to discover and learn from online material outside of a course's core curriculum is critical for generalized understanding. However, such a process is often limited by various factors, including efficiency, redundancy, ...
- research-articleJuly 2023
Into the Unknown: Exploration of Search Engines’ Responses to Users with Depression and Anxiety
ACM Transactions on the Web (TWEB), Volume 17, Issue 4Article No.: 25, Pages 1–29https://doi.org/10.1145/3580283Researchers worldwide have explored the behavioral nuances that emerge from interactions of individuals afflicted by mental health disorders (MHD) with persuasive technologies, mainly social media. Yet, there is a gap in the analysis pertaining to a ...
- research-articleMarch 2021
An Intent Taxonomy for Questions Asked in Web Search
CHIIR '21: Proceedings of the 2021 Conference on Human Information Interaction and RetrievalMarch 2021, Pages 85–94https://doi.org/10.1145/3406522.3446027We present a new, multi-faceted taxonomy to classify questions asked in web search engines based on the question intent, types of entities mentioned, types of question words, and granularity of the expected answer. Built based on the inspection of 1,000 ...
- research-articleMarch 2020
Privacy preserving cooperative computation for personalized web search applications
SAC '20: Proceedings of the 35th Annual ACM Symposium on Applied ComputingMarch 2020, Pages 250–258https://doi.org/10.1145/3341105.3373947With the emergence of connected objects and the development of Artificial Intelligence (AI) mechanisms and algorithms, personalized applications are gaining an expanding interest, providing services tailored to each single user needs and expectations. ...
- invited-talkAugust 2017
Forward to the Past: Notes towards a Pre-history of Web Search
SIGIR '17: Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information RetrievalAugust 2017, Page 1https://doi.org/10.1145/3077136.3080643To me, an awareness of history is a fundamental requirement for progress; and I believe that we in the field of information retrieval are currently ill-served in this domain, or at least not as aware as we should be. While it is true that a researcher ...
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- research-articleJuly 2016
Formal verification of DEVS simulation: web search engine model case study
SCSC '16: Proceedings of the Summer Computer Simulation ConferenceJuly 2016, Article No.: 18, Pages 1–8Web search engines (WSE) are complex and highly optimized systems operating over large clusters of processors which manage high and dynamic and unpredictable user query bursts. The modeling, simulation and formal verification of shush systems is a ...
- research-articleJuly 2016
Scalability and Efficiency Challenges in Large-Scale Web Search Engines
SIGIR '16: Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information RetrievalJuly 2016, Pages 1223–1226https://doi.org/10.1145/2911451.2914808Commercial web search engines need to process thousands of queries every second and provide responses to user queries within a few hundred milliseconds. As a consequence of these tight performance constraints, search engines construct and maintain very ...
- research-articleApril 2016
Exploiting Green Energy to Reduce the Operational Costs of Multi-Center Web Search Engines
WWW '16: Proceedings of the 25th International Conference on World Wide WebApril 2016, Pages 1237–1247https://doi.org/10.1145/2872427.2883021Carbon dioxide emissions resulting from fossil fuels (brown energy) combustion are the main cause of global warming due to the greenhouse effect. Large IT companies have recently increased their efforts in reducing the carbon dioxide footprint ...
- articleJanuary 2016
Building the search pattern of web users using conceptual semantic space model
- Zheng Xu,
- Xiao Wei,
- Yunhuai Liu,
- Lin Mei,
- Chuanping Hu,
- Kim-Kwang Raymond Choo,
- Yiwei Zhu,
- Vijayan Sugumaran
International Journal of Web and Grid Services (IJWGS), Volume 12, Issue 3January 2016, Pages 328–347https://doi.org/10.1504/IJWGS.2016.079158As the web enters Big Data age, users and search engines may find it more and more difficult to effectively use and manage such big data. This paper proposes a method based on user tasks to perceive user intent, the meaningful user intent can be ...
- otherMay 2015
Propagating Expiration Decisions in a Search Engine Result Cache
WWW '15 Companion: Proceedings of the 24th International Conference on World Wide WebMay 2015, Pages 107–108https://doi.org/10.1145/2740908.2742772Detecting stale queries in a search engine result cache is an important problem. In this work, we propose a mechanism that propagates the expiration decision for a query to similar queries in the cache to re-adjust their time-to-live values.
- tutorialFebruary 2015
Scalability and Efficiency Challenges in Large-Scale Web Search Engines
WSDM '15: Proceedings of the Eighth ACM International Conference on Web Search and Data MiningFebruary 2015, Pages 411–412https://doi.org/10.1145/2684822.2697039Commercial web search engines need to process thousands of queries every second and provide responses to user queries within a few hundred milliseconds. As a consequence of these tight performance constraints, search engines construct and maintain very ...
- tutorialJuly 2014
Scalability and efficiency challenges in large-scale web search engines
SIGIR '14: Proceedings of the 37th international ACM SIGIR conference on Research & development in information retrievalJuly 2014, Page 1285https://doi.org/10.1145/2600428.2602291Large-scale web search engines rely on massive compute infrastructures to be able to cope with the continuous growth of the Web and their user bases. In such search engines, achieving scalability and efficiency requires making careful architectural ...
- tutorialApril 2014
Scalability and efficiency challenges in large-scale web search engines
WWW '14 Companion: Proceedings of the 23rd International Conference on World Wide WebApril 2014, Pages 185–186https://doi.org/10.1145/2567948.2577271The main goals of a web search engine are quality, efficiency, and scalability. In this tutorial, we focus on the last two goals, providing a fairly comprehensive overview of the scalability and efficiency challenges in large-scale web search engines. ...
- abstractMarch 2014
Resources for teaching web science to computer science undergraduates (abstract only)
SIGCSE '14: Proceedings of the 45th ACM technical symposium on Computer science educationMarch 2014, Page 725https://doi.org/10.1145/2538862.2554792This poster reports on course materials that have been developed for teaching an Introduction to Web Science course to computing majors at the undergraduate level. This is the first comprehensive collection of resources that we are aware of that targets ...
- posterOctober 2013
Strategies for setting time-to-live values in result caches
CIKM '13: Proceedings of the 22nd ACM international conference on Information & Knowledge ManagementOctober 2013, Pages 1881–1884https://doi.org/10.1145/2505515.2507886In web query result caching, staleness of queries are often bounded via a time-to-live (TTL) mechanism, which expires the validity of cached query results at some point in time. In this work, we evaluate the performance of three alternative TTL ...
- tutorialJuly 2013
Scalability and efficiency challenges in commercial web search engines
SIGIR '13: Proceedings of the 36th international ACM SIGIR conference on Research and development in information retrievalJuly 2013, Page 1124https://doi.org/10.1145/2484028.2484189Commercial web search engines rely on very large compute infrastructures to be able to cope with the continuous growth of the Web and user bases. Achieving scalability and efficiency in such large-scale search engines requires making careful ...
- short-paperJuly 2013
A financial cost metric for result caching
SIGIR '13: Proceedings of the 36th international ACM SIGIR conference on Research and development in information retrievalJuly 2013, Pages 873–876https://doi.org/10.1145/2484028.2484182Web search engines cache results of frequent and/or recent queries. Result caching strategies can be evaluated using different metrics, hit rate being the most well-known. Recent works take the processing overhead of queries into account when evaluating ...
- ArticleNovember 2012
Extracting Knowledge from Web Search Engine Results
ICTAI '12: Proceedings of the 2012 IEEE 24th International Conference on Tools with Artificial Intelligence - Volume 01November 2012, Pages 860–867Nowadays, people frequently use search engines in order to find the information they need on the web. However, usually web search engines return web page references in a global ranking making it difficult to the users to browse different topics captured ...
- short-paperOctober 2012
Characterizing web search queries that match very few or no results
CIKM '12: Proceedings of the 21st ACM international conference on Information and knowledge managementOctober 2012, Pages 2000–2004https://doi.org/10.1145/2396761.2398560Despite the continuous efforts to improve the web search quality, a non-negligible fraction of user queries end up with very few or even no matching results in leading web search engines. In this work, we provide a detailed characterization of such ...
- posterAugust 2012
User-aware caching and prefetching query results in web search engines
SIGIR '12: Proceedings of the 35th international ACM SIGIR conference on Research and development in information retrievalAugust 2012, Pages 1163–1164https://doi.org/10.1145/2348283.2348520Query results caching is an efficient technique for Web search engines. In this paper we present User-Aware Cache, a novel approach tailored for query results caching, that is based on user characteristics. We then use a trace of around 30 million ...