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Displaying 1-15 out of 15 total
Organizing User Search Histories
Found in: IEEE Transactions on Knowledge and Data Engineering
By Heasoo Hwang,Hady W. Lauw,Lise Getoor,Alexandros Ntoulas
Issue Date:May 2012
pp. 912-925
Users are increasingly pursuing complex task-oriented goals on the web, such as making travel arrangements, managing finances, or planning purchases. To this end, they usually break down the tasks into a few codependent steps and issue multiple queries aro...
 
Homophily in the Digital World: A LiveJournal Case Study
Found in: IEEE Internet Computing
By Hady W. Lauw, John C. Shafer, Rakesh Agrawal, Alexandros Ntoulas
Issue Date:March 2010
pp. 15-23
Are two users more likely to be friends if they share common interests? Are two users more likely to share common interests if they're friends? The authors study the phenomenon of homophily in the digital world by answering these central questions. Unlike ...
 
Downloading textual hidden web content through keyword queries
Found in: Digital Libraries, Joint Conference on
By Petros Zerfos, Junghoo Cho, Alexandros Ntoulas
Issue Date:June 2005
pp. 100-109
An ever-increasing amount of information on the Web today is available only through search interfaces: the users have to type in a set of keywords in a search form in order to access the pages from certain Web sites. These pages are often referred to as th...
 
Modeling and Managing Content Changes in Text Databases
Found in: Data Engineering, International Conference on
By Panagiotis G. Ipeirotis, Alexandros Ntoulas, Junghoo Cho, Luis Gravano
Issue Date:April 2005
pp. 606-617
Large amounts of (often valuable) information are stored in web-accessible text databases.
 
PocketWeb: instant web browsing for mobile devices
Found in: Proceedings of the seventeenth international conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS '12)
By Akshay Mittal, Dimitrios Lymberopoulos, Karin Strauss, Oriana Riva, Alexandros Ntoulas
Issue Date:March 2012
pp. 1-12
The high network latencies and limited battery life of mobile phones can make mobile web browsing a frustrating experience. In prior work, we proposed trading memory capacity for lower web access latency and a more convenient data transfer schedule from an...
     
Efficient query rewrite for structured web queries
Found in: Proceedings of the 20th ACM international conference on Information and knowledge management (CIKM '11)
By Alexandros Ntoulas, Samuel Ieong, Sreenivas Gollapudi, Stelios Paparizos
Issue Date:October 2011
pp. 2417-2420
Web search engines incorporate results from structured data sources to answer semantically rich user queries, i.e. Samsung 50 inch led tv can be answered from a table of television data. However, users are not domain experts and quite often enter values th...
     
Indexing strategies for graceful degradation of search quality
Found in: Proceedings of the 34th international ACM SIGIR conference on Research and development in Information (SIGIR '11)
By Alexandros Ntoulas, Krishnaram Kenthapadi, Samuel Ieong, Shuai Ding, Sreenivas Gollapudi
Issue Date:July 2011
pp. 575-584
Large web search engines process billions of queries each day over tens of billions of documents with often very stringent requirements for a user's search experience, in particular, low latency and highly relevant search results. Index generation and serv...
     
Answering web queries using structured data sources
Found in: Proceedings of the 35th SIGMOD international conference on Management of data (SIGMOD '09)
By Alexandros Ntoulas, John Shafer, Rakesh Agrawal, Stelios Paparizos
Issue Date:June 2009
pp. 3-4
In web search today, a user types a few keywords which are then matched against a large collection of unstructured web pages. This leaves a lot to be desired for when the best answer to a query is contained in structured data stores and/or when the user in...
     
Releasing search queries and clicks privately
Found in: Proceedings of the 18th international conference on World wide web (WWW '09)
By Aleksandra Korolova, Alexandros Ntoulas, Krishnaram Kenthapadi, Nina Mishra
Issue Date:April 2009
pp. 66-66
The question of how to publish an anonymized search log was brought to the forefront by a well-intentioned, but privacy-unaware AOL search log release. Since then a series of ad-hoc techniques have been proposed in the literature, though none are known to ...
     
Modeling and managing changes in text databases
Found in: ACM Transactions on Database Systems (TODS)
By Alexandros Ntoulas, Junghoo Cho, Luis Gravano, Panagiotis G. Ipeirotis
Issue Date:August 2007
pp. 14-es
Large amounts of (often valuable) information are stored in web-accessible text databases. “Metasearchers” provide unified interfaces to query multiple such databases at once. For efficiency, metasearchers rely on succinct statistical summaries...
     
Pruning policies for two-tiered inverted index with correctness guarantee
Found in: Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval (SIGIR '07)
By Alexandros Ntoulas, Junghoo Cho
Issue Date:July 2007
pp. 191-198
The Web search engines maintain large-scale inverted indexes which are queried thousands of times per second by users eager for information. In order to cope with the vast amounts of query loads, search engines prune their index to keep documents that are ...
     
Answering bounded continuous search queries in the world wide web
Found in: Proceedings of the 16th international conference on World Wide Web (WWW '07)
By Alexandros Ntoulas, Dirk Kukulenz
Issue Date:May 2007
pp. 551-560
Search queries applied to extract relevant information from the World Wide Web over a period of time may be denoted as continuous search queries. The improvement of continuous search queries may concern not only the quality of retrieved results but also th...
     
Detecting spam web pages through content analysis
Found in: Proceedings of the 15th international conference on World Wide Web (WWW '06)
By Alexandros Ntoulas, Dennis Fetterly, Marc Najork, Mark Manasse
Issue Date:May 2006
pp. 83-92
In this paper, we continue our investigations of "web spam": the injection of artificially-created pages into the web in order to influence the results from search engines, to drive traffic to certain pages for fun or profit. This paper considers some prev...
     
Downloading textual hidden web content through keyword queries
Found in: Proceedings of the 5th ACM/IEEE-CS joint conference on Digital libraries (JCDL '05)
By Alexandros Ntoulas, Junghoo Cho, Petros Zerfos
Issue Date:June 2005
pp. 100-109
An ever-increasing amount of information on the Web today is available only through search interfaces: the users have to type in a set of keywords in a search form in order to access the pages from certain Web sites. These pages are often referred to as th...
     
The infocious web search engine: improving web searching through linguistic analysis
Found in: Special interest tracks and posters of the 14th international conference on World Wide Web (WWW '05)
By Alexandros Ntoulas, Gerald Chao, Junghoo Cho
Issue Date:May 2005
pp. 840-849
In this paper we present the Infocious Web search engine [23]. Our goal in creating Infocious is to improve the way people find information on the Web by resolving ambiguities present in natural language text. This is achieved by performing linguistic anal...
     
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