Özgür Ulusoy

Ismail Sengör Altingövde, Özlem Nurcan Subakan, Özgür Ulusoy: Cluster searching strategies for collaborative recommendation systems. Inf. Process. Manage. 49(3): 688-697 (2013)

Rifat Ozcan, Ismail Sengör Altingövde, Berkant Barla Cambazoglu, Flavio Paiva Junqueira, Özgür Ulusoy: A five-level static cache architecture for web search engines. Inf. Process. Manage. 48(5): 828-840 (2012)

Ismail Sengör Altingövde, Rifat Ozcan, Özgür Ulusoy: Static index pruning in web search engines: Combining term and document popularities with query views. ACM Trans. Inf. Syst. 30(1): 2 (2012)

Berkant Barla Cambazoglu, Ismail Sengör Altingövde, Rifat Ozcan, Özgür Ulusoy: Cache-Based Query Processing for Search Engines. TWEB 6(4): 14 (2012)

Yunus Emre Aslan, Ibrahim Korpeoglu, Özgür Ulusoy: A framework for use of wireless sensor networks in forest fire detection and monitoring. Computers, Environment and Urban Systems 36(6): 614-625 (2012)

Ismail Sengör Altingövde, Roi Blanco, Berkant Barla Cambazoglu, Rifat Ozcan, Erdem Sarigil, Özgür Ulusoy: Characterizing web search queries that match very few or no results. CIKM 2012: 2000-2004

Sadiye Alici, Ismail Sengör Altingövde, Rifat Ozcan, Berkant Barla Cambazoglu, Özgür Ulusoy: Adaptive Time-to-Live Strategies for Query Result Caching in Web Search Engines. ECIR 2012: 401-412

Duygu Atilgan, Ismail Sengör Altingövde, Özgür Ulusoy: On the Size of Full Element-Indexes for XML Keyword Search. ECIR 2012: 556-560

Rifat Ozcan, Ismail Sengör Altingövde, Özgür Ulusoy: In Praise of Laziness: A Lazy Strategy for Web Information Extraction. ECIR 2012: 565-568

Fatih Çakir, Ugur Güdükbay, Özgür Ulusoy: Nearest-Neighbor based Metric Functions for indoor scene recognition. Computer Vision and Image Understanding 115(11): 1483-1492 (2011)

Rifat Ozcan, Ismail Sengör Altingövde, Özgür Ulusoy: Exploiting navigational queries for result presentation and caching in Web search engines. JASIST 62(4): 714-726 (2011)

Rifat Ozcan, Ismail Sengör Altingövde, Özgür Ulusoy: Cost-Aware Strategies for Query Result Caching in Web Search Engines. TWEB 5(2): 9 (2011)

Ismail Sengör Altingövde, Rifat Ozcan, Berkant Barla Cambazoglu, Özgür Ulusoy: Second Chance: A Hybrid Approach for Dynamic Result Caching in Search Engines. ECIR 2011: 510-516

Sadiye Alici, Ismail Sengör Altingövde, Rifat Ozcan, Berkant Barla Cambazoglu, Özgür Ulusoy: Timestamp-based result cache invalidation for web search engines. SIGIR 2011: 973-982

Ismail Sengör Altingövde, Rifat Ozcan, Özgür Ulusoy: Evolution of web search results within years. SIGIR 2011: 1237-1238

Sadiye Alici, Ismail Sengör Altingövde, Rifat Ozcan, Berkant Barla Cambazoglu, Özgür Ulusoy: Timestamp-based cache invalidation for search engines. WWW (Companion Volume) 2011: 3-4

Onur Küçüktunç, Ugur Güdükbay, Özgür Ulusoy: Fuzzy color histogram-based video segmentation. Computer Vision and Image Understanding 114(1): 125-134 (2010)

Ediz Saykol, Ugur Güdükbay, Özgür Ulusoy: Scenario-based query processing for video-surveillance archives. Eng. Appl. of AI 23(3): 331-345 (2010)

Muhammet Bastan, Hayati Cam, Ugur Güdükbay, Özgür Ulusoy: Bilvideo-7: an MPEG-7- compatible video indexing and retrieval system. IEEE MultiMedia 17(3): 62-73 (2010)

Onur Küçüktunç, Muhammet Bastan, Ugur Güdükbay, Özgür Ulusoy: Video copy detection using multiple visual cues and MPEG-7 descriptors. J. Visual Communication and Image Representation 21(8): 838-849 (2010)

Ismail Sengör Altingövde, Duygu Atilgan, Özgür Ulusoy: XML Retrieval Using Pruned Element-Index Files. ECIR 2010: 306-318

Murat Karakaya, Ibrahim Korpeoglu, Özgür Ulusoy: Free Riding in Peer-to-Peer Networks. IEEE Internet Computing 13(2): 92-98 (2009)

Selim Ciraci, Ibrahim Korpeoglu, Özgür Ulusoy: Reducing query overhead through route learning in unstructured peer-to-peer network. J. Network and Computer Applications 32(3): 550-567 (2009)

Ismet Zeki Yalniz, Ismail Sengör Altingövde, Ugur Güdükbay, Özgür Ulusoy: Ottoman archives explorer: A retrieval system for digital Ottoman archives. JOCCH 2(3): 8 (2009)

Ismail Sengör Altingövde, Rifat Ozcan, Özgür Ulusoy: Exploiting query views for static index pruning in web search engines. CIKM 2009: 1951-1954

Ismail Sengör Altingövde, Rifat Ozcan, Özgür Ulusoy: A Cost-Aware Strategy for Query Result Caching in Web Search Engines. ECIR 2009: 628-636

Ismail Sengör Altingövde, Rifat Ozcan, Özgür Ulusoy: A Practitioner's Guide for Static Index Pruning. ECIR 2009: 675-679

Ismail Sengör Altingövde, Duygu Atilgan, Özgür Ulusoy: Exploiting Index Pruning Methods for Clustering XML Collections. INEX 2009: 379-386

Murat Karakaya, Ibrahim Korpeoglu, Özgür Ulusoy: Counteracting free riding in Peer-to-Peer networks. Computer Networks 52(3): 675-694 (2008)

Murat Karakaya, Ibrahim Korpeoglu, Özgür Ulusoy: A connection management protocol for promoting cooperation in Peer-to-Peer networks. Computer Communications 31(2): 240-256 (2008)

Tarkan Sevilmis, Muhammet Bastan, Ugur Güdükbay, Özgür Ulusoy: Automatic detection of salient objects and spatial relations in videos for a video database system. Image Vision Comput. 26(10): 1384-1396 (2008)

Ismail Sengör Altingövde, Engin Demir, Fazli Can, Özgür Ulusoy: Incremental cluster-based retrieval using compressed cluster-skipping inverted files. ACM Trans. Inf. Syst. 26(3) (2008)

Rifat Ozcan, Ismail Sengör Altingövde, Özgür Ulusoy: Utilization of navigational queries for result presentation and caching in search engines. CIKM 2008: 1499-1500

Ismail Sengör Altingövde, Fazli Can, Özgür Ulusoy: Efficient Processing of Category-Restricted Queries for Web Directories. ECIR 2008: 695-699

Muhammet Bastan, Ugur Güdükbay, Özgür Ulusoy: Segmentation-based extraction of important objects from video for object-based indexing. ICME 2008: 1357-1360

Ismail Sengör Altingövde, Engin Demir, Fazli Can, Özgür Ulusoy: Site-based dynamic pruning for query processing in search engines. SIGIR 2008: 861-862

Onur Kucuktunc, Muhammet Bastan, Ugur Güdükbay, Özgür Ulusoy: Bilkent University Multimedia Database Group at TRECVID 2008. TRECVID 2008

Rifat Ozcan, Ismail Sengör Altingövde, Özgür Ulusoy: Static query result caching revisited. WWW 2008: 1169-1170

Onur Kucuktunc, Ugur Güdükbay, Özgür Ulusoy: A Natural Language-Based Interface for Querying a Video Database. IEEE MultiMedia 14(1): 83-89 (2007)

Suzanne Little, Massimo Martinelli, Ovidio Salvetti, Ugur Güdükbay, Özgür Ulusoy, Gaël de Chalendar, Gregory Grefenstette: Integration of Structural and Semantic Models for Multimedia Metadata Management. CBMI 2007: 40-45

Ismail Sengör Altingövde, Rifat Ozcan, Suleyman Cetintas, Hakan Yilmaz, Özgür Ulusoy: An automatic approach to construct domain-specific web portals. CIKM 2007: 849-852

Ismail Sengör Altingövde, Rifat Ozcan, Huseyin Cagdas Ocalan, Fazli Can, Özgür Ulusoy: Large-scale cluster-based retrieval experiments on Turkish texts. SIGIR 2007: 891-892

Mert Akdere, Cemal Çagatay Bilgin, Ozan Gerdaneri, Ibrahim Korpeoglu, Özgür Ulusoy, Ugur Çetintemel: A comparison of epidemic algorithms in wireless sensor networks. Computer Communications 29(13-14): 2450-2457 (2006)

Aykut Ünal, Yücel Saygin, Özgür Ulusoy: Processing count queries over event streams at multiple time granularities. Inf. Sci. 176(14): 2066-2096 (2006)

Kam-yiu Lam, Özgür Ulusoy: Adaptive schemes for location update generation in execution location-dependent continuous queries. Journal of Systems and Software 79(4): 441-453 (2006)

Ismail Sengör Altingövde, Fazli Can, Özgür Ulusoy: Algorithms for Within-Cluster Searches Using Inverted Files. ISCIS 2006: 707-716

Gökhan Yavas, Dimitrios Katsaros, Özgür Ulusoy, Yannis Manolopoulos: A data mining approach for location prediction in mobile environments. Data Knowl. Eng. 54(2): 121-146 (2005)

Ediz Saykol, Ugur Güdükbay, Özgür Ulusoy: A histogram-based approach for object-based query-by-shape-and-color in image and video databases. Image Vision Comput. 23(13): 1170-1180 (2005)

Mehmet Emin Dönderler, Ediz Saykol, Umut Arslan, Özgür Ulusoy, Ugur Güdükbay: BilVideo: Design and Implementation of a Video Database Management System. Multimedia Tools Appl. 27(1): 79-104 (2005)

Özgür Ulusoy: Database research at Bilkent University. SIGMOD Record 34(3): 77-80 (2005)

Selim Ciraci, Ibrahim Korpeoglu, Özgür Ulusoy: Characterizing Gnutella Network Properties for Peer-to-Peer Network Simulation. ISCIS 2005: 274-283

Selma Ayse Özalp, Özgür Ulusoy: Effective Early Termination Techniques for Text Similarity Join Operator. ISCIS 2005: 791-801

Ediz Saykol, Ugur Güdükbay, Özgür Ulusoy: A Database Model for Querying Visual Surveillance Videos by Integrating Semantic and Low-Level Features. Multimedia Information Systems 2005: 163-176

Ismail Sengör Altingövde, Özgür Ulusoy: Exploiting Interclass Rules for Focused Crawling. IEEE Intelligent Systems 19(6): 66-73 (2004)

Selma Ayse Özel, Ismail Sengör Altingövde, Özgür Ulusoy, Gultekin Özsoyoglu, Z. Meral Özsoyoglu: Metadata-based modeling of information resources on the Web. JASIST 55(2): 97-110 (2004)

Gulay Ünel, Mehmet Emin Dönderler, Özgür Ulusoy, Ugur Güdükbay: An efficient query optimization strategy for spatio-temporal queries in video databases. Journal of Systems and Software 73: 113-131 (2004)

Ediz Saykol, Ali Kemal Sinop, Ugur Güdükbay, Özgür Ulusoy, A. Enis Çetin: Content-based retrieval of historical Ottoman documents stored as textual images. IEEE Transactions on Image Processing 13(3): 314-325 (2004)

Gultekin Özsoyoglu, Ismail Sengör Altingövde, Abdullah Al-Hamdani, Selma Ayse Özel, Özgür Ulusoy, Z. Meral Özsoyoglu: Querying web metadata: Native score management and text support in databases. ACM Trans. Database Syst. 29(4): 581-634 (2004)

Mehmet Emin Dönderler, Özgür Ulusoy, Ugur Güdükbay: Rule-based spatiotemporal query processing for video databases. VLDB J. 13(1): 86-103 (2004)

Ediz Saykol, Ugur Güdükbay, Özgür Ulusoy: Integrated Querying of Images by Color, Shape, and Texture Content of Salient Objects. ADVIS 2004: 363-371

Murat Karakaya, Ibrahim Korpeoglu, Özgür Ulusoy: A Distributed and Measurement-Based Framework against Free Riding in Peer-to-Peer Networks. Peer-to-Peer Computing 2004: 276-277

Özgür Ulusoy, Ugur Güdükbay, Mehmet Emin Dönderler, Ediz Saykol, Cemil Alper: BilVideo Video Database Management System. VLDB 2004: 1373-1376

Mehmet Emin Dönderler, Ediz Saykol, Özgür Ulusoy, Ugur Güdükbay: BilVideo: A Video Database Management System. IEEE MultiMedia 10(1): 66-70 (2003)

Dimitrios Katsaros, Alexandros Nanopoulos, Murat Karakaya, Gökhan Yavas, Özgür Ulusoy, Yannis Manolopoulos: Clustering Mobile Trajectories for Resource Allocation in Mobile Environments. IDA 2003: 319-329

Özgür Ulusoy, I. Yoncaci, Kam-yiu Lam: Evaluation of a Criticality-Based Method for Generating Location Updates. Database Mechanisms for Mobile Applications 2003: 94-105

Mehmet Emin Dönderler, Özgür Ulusoy, Ugur Güdükbay: A rule-based video database system architecture. Inf. Sci. 143(1-4): 13-45 (2002)

Yücel Saygin, Özgür Ulusoy: Exploiting Data Mining Techniques for Broadcasting Data in Mobile Computing Environments. IEEE Trans. Knowl. Data Eng. 14(6): 1387-1399 (2002)

Ediz Saykol, Gürcan Gülesir, Ugur Güdükbay, Özgür Ulusoy: KiMPA: A Kinematics-Based Method for Polygon Approximation. ADVIS 2002: 186-194

Gultekin Özsoyoglu, Abdullah Al-Hamdani, Ismail Sengör Altingövde, Selma Ayse Özel, Özgür Ulusoy, Z. Meral Özsoyoglu: Sideway Value Algebra for Object-Relational Databases. VLDB 2002: 59-70

Yücel Saygin, Özgür Ulusoy: Automated construction of fuzzy event sets and its application to active databases. IEEE T. Fuzzy Systems 9(3): 450-460 (2001)

Murat Karakaya, Özgür Ulusoy: Evaluation of a Broadcast Scheduling Algorithm. ADBIS 2001: 182-195

Kam-yiu Lam, Özgür Ulusoy, Tony S. H. Lee, Edward Chan, Guohui Li: An Efficient Method for Generating Location Updates for Processing of Location-Dependent Continuous Queries. DASFAA 2001: 218-225

Ismail Sengör Altingövde, Selma Ayse Özel, Özgür Ulusoy, Gultekin Özsoyoglu, Z. Meral Özsoyoglu: Topic-Centric Querying of Web Information Resources. DEXA 2001: 699-711

Ediz Saykol, Ugur Güdükbay, Özgür Ulusoy: A Semi-Automatic Object Extraction Tool for Querying in Multimedia Databases. Multimedia Information Systems 2001: 11-20

Özgür Ulusoy: Distributed Concurrency Control. Real-Time Database Systems 2001: 205-215

Özgür Ulusoy: Data Replication and Availability. Real-Time Database Systems 2001: 217-225

Hüseyin Gökmen Gök, Özgür Ulusoy: Transmission of continuous query results in mobile computing systems. Inf. Sci. 125(1-4): 37-63 (2000)

Mehmet Emin Dönderler, Özgür Ulusoy, Ugur Güdükbay: A Rule-Based Approach to Represent Spatio-Temporal Relations in Video Data. ADVIS 2000: 409-418

Yücel Saygin, Özgür Ulusoy, Ahmed K. Elmagarmid: Association Rules for Supporting Hoarding in Mobile Computing Environments. RIDE 2000: 71-78

Ersan Kayan, Özgür Ulusoy: An Evaluation of Real-Time Transaction Management Issues in Mobile Database Systems. Comput. J. 42(6): 501-510 (1999)

Yücel Saygin, Özgür Ulusoy, Adnan Yazici: Dealing with Fuzziness in Active Mobile Database Systems. Inf. Sci. 120(1-4): 23-44 (1999)

Ugur Çetintemel, Jürgen Zimmermann, Özgür Ulusoy, Alejandro P. Buchmann: OBJECTIVE: a benchmark for object-oriented active database systems. Journal of Systems and Software 45(1): 31-43 (1999)

Ersan Kayan, Özgür Ulusoy: Real-Time Transaction Management in Mobile Computing Systems. DASFAA 1999: 127-134

Jamel Tayeb, Özgür Ulusoy, Ouri Wolfson: A Quadtree-Based Dynamic Attribute Indexing Method. Comput. J. 41(3): 185-200 (1998)

Yücel Saygin, Özgür Ulusoy, Sharma Chakravarthy: Concurrent Rule Execution in Active Databases. Inf. Syst. 23(1): 39-64 (1998)

Özgür Ulusoy, Alejandro P. Buchmann: A Real-Time Concurrency Control Protocol for Main-Memory Database Systems. Inf. Syst. 23(2): 109-125 (1998)

Özgür Ulusoy: Analysis of Concurrency Control Protocols for Real-Time Database Systems. Inf. Sci. 111(1-4): 19-47 (1998)

Özgür Ulusoy: Transaction processing in distributed active real-time database systems. Journal of Systems and Software 42(3): 247-262 (1998)

Yücel Saygin, Özgür Ulusoy: Involving Fuzzy Concepts in Active Mobile Databases. DEXA 1998: 28-37

Özgür Ulusoy: Real-Time Database Management for Mobile Computing. IADT 1998: 233-240

Timuçin Devirmis, Özgür Ulusoy: Design and Evaluation of a New Transaction Execution Model for Multidatabase Systems. Inf. Sci. 102(1-4): 203-238 (1997)

Özgür Ulusoy: An Evaluation of Network Access Protocols for Distributed Real-Time Database Systems. Journal of Systems and Software 37(1): 49-60 (1997)

Özgür Ulusoy: Performance Issues in Processing Active Real-Time Transactions. ARTDB 1997: 98-118

Aloysius K. Mok, John A. Stankovic, Özgür Ulusoy, Jörgen Hansson, Kam-yiu Lam, Kwei-Jay Lin: Panel Session: Predictability in Active Real-Time/Temporal Databases. ARTDB 1997: 231-237

Yasemin Turkan, Özgür Ulusoy: An Efficient Memory Management Algorithm for Client-Server Database Management Systems. Comput. J. 39(5): 374-385 (1996)

Patrick E. O'Neil, Özgür Ulusoy: Guest Editorial: Real-Time Database Systems. Inf. Syst. 21(1): 1-2 (1996)

Özgür Ulusoy, Alejandro P. Buchmann: Exploiting Main Memory DBMS Features to Improve Real-Time Concurrency Control Protocols. SIGMOD Record 25(1): 23-25 (1996)

Özgür Ulusoy: An Evaluation of a Client-Server Real-Time Database System. ACM Conference on Computer Science 1996: 89-95

Yigit Kulabas, Özgür Ulusoy: Heuristic Algorithms for Inter-Query Scheduling in Database Systems. ADBIS 1996: 141-145

Timuçin Devirmis, Özgür Ulusoy: A Transaction Model for Multidatabase Systems. Euro-Par, Vol. II 1996: 862-865

Özgür Ulusoy: Network access protocol for hard real-time communication systems. Computer Communications 18(12): 943-948 (1995)

Özgür Ulusoy: Research Issues in Real-Time Database Systems. Inf. Sci. 87(1-3): 123-151 (1995)

Özgür Ulusoy: A study of two transaction-processing architectures for distributed real-time data base systems. Journal of Systems and Software 31(2): 97-108 (1995)

Özgür Ulusoy: An Annotated Bibliography on Real-Time Database Systems. SIGMOD Record 24(4): 40-45 (1995)

Özgür Ulusoy: An Evaluation of Network Access Protocols for Distributed Real-Time Database Systems. ARTDB 1995: 242-258

Özgür Ulusoy: Processing Real-Time Transactions in a Replicated Database System. Distributed and Parallel Databases 2(4): 405-436 (1994)

Özgür Ulusoy: Data Replication versus Timing Constraints in Distributed Database Systems. ACM Conference on Computer Science 1994: 296-303

Özgür Ulusoy: Applying Database Technology to Real-Time Systems. DEXA 1994: 611-620

Özgür Ulusoy, Geneva G. Belford: Real-time transaction scheduling in database systems. Inf. Syst. 18(8): 559-580 (1993)

Özgür Ulusoy: An Approximate Analysis of a Real-Time Database Concurrency Control Protocol via Markov Modeling. SIGMETRICS Performance Evaluation Review 20(3): 36-48 (1993)

Özgür Ulusoy: Current Research on Real-Time Databases. SIGMOD Record 21(4): 16-21 (1992)

Özgür Ulusoy, Geneva G. Belford: Concurrency Control in Real-Time Database Systems. ACM Conference on Computer Science 1992: 181-188

Özgür Ulusoy, Geneva G. Belford: A simulation model for distributed real-time database systems. Annual Simulation Symposium 1992: 232-240

Özgür Ulusoy, Geneva G. Belford: Real-Time Lock-Based Concurrency Control in Distributed Database Systems. ICDCS 1992: 136-143