![]() ![]() ![]() | ![]() |
![]() ![]() ![]() ![]() ![]() |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Note: Links lead to the DBLP on the Web. Divyakant Agrawal 125 Hakan Ferhatosmanoglu , Ertem Tuncel , Divyakant Agrawal, Amr El Abbadi : Approximate Nearest Neighbor Searching in Multimedia Databases. ICDE 2001 : 503-511 124 Mirek Riedewald , Divyakant Agrawal, Amr El Abbadi : Flexible Data Cubes for Online Aggregation. ICDT 2001 : 159-173 123 Hae Don Chon , Divyakant Agrawal, Amr El Abbadi : Storage and Retrieval of Moving Objects. Mobile Data Management 2001 : 173-184 122 K. Selçuk Candan , Wen-Syan Li , Qiong Luo , Wang-Pin Hsiung , Divyakant Agrawal: Enabling Dynamic Content Caching for Database-Driven Web Sites. SIGMOD 2001 121 Yi-Leh Wu , Divyakant Agrawal, Amr El Abbadi : Using the Golden Rule of Sampling for Query Estimation. SIGMOD 2001 120 Ioana Stanoi , Divyakant Agrawal, Amr El Abbadi : Reverse Nearest Neighbor Queries for Dynamic Databases. ACM SIGMOD Workshop on Research Issues in Data Mining and Knowledge Discovery 2000 : 44-53 119 Hakan Ferhatosmanoglu , Ertem Tuncel , Divyakant Agrawal, Amr El Abbadi : Vector Approximation based Indexing for Non-uniform High Dimensional Data Sets. CIKM 2000 : 202-209 118 Yi-Leh Wu , Divyakant Agrawal, Amr El Abbadi : Using Wavelet Decomposition to Support Progressive and Approximate Range-Sum Queries over Data Cubes. CIKM 2000 : 414-421 117 Yi-Leh Wu , Divyakant Agrawal, Amr El Abbadi : A Comparison of DFT and DWT based Similarity Search in Time-Series Databases. CIKM 2000 : 488-495 116 Divyakant Agrawal, Amr El Abbadi : View Maintenance and Analytical Processing at Data Warehouses. DNIS 2000 : 107-118 115 Mirek Riedewald , Divyakant Agrawal, Amr El Abbadi , Renato Pajarola : Space-Efficient Data Cubes for Dynamic Environments. DaWaK 2000 : 24-33 114 Ioana Stanoi , Divyakant Agrawal, Amr El Abbadi : View Derivation Graph with Edge Fitting for Adaptive Data Warehousing. DaWaK 2000 : 67-76 113 Kevin O'Gorman , Divyakant Agrawal, Amr El Abbadi : On the Importance of Tuning in Incremental View Maintenance: An Experience Case Study. DaWaK 2000 : 77-82 112 Steven Geffner , Divyakant Agrawal, Amr El Abbadi : The Dynamic Data Cube. EDBT 2000 : 237-253 111 JoAnne Holliday , Divyakant Agrawal, Amr El Abbadi : Database Replication Using Epidemic Communication. Euro-Par 2000 : 427-434 110 JoAnne Holliday , Divyakant Agrawal, Amr El Abbadi : Exploiting Planned Disconnections in Mobile Environments. RIDE 2000 : 25-30 109 Mirek Riedewald , Divyakant Agrawal, Amr El Abbadi : pCube: Update-Efficient Online Aggregation with Progressive Feedback and Error Bounds. SSDBM 2000 : 95-108 108 Wen-Syan Li , Divyakant Agrawal: Supporting web query expansion efficiently using multi-granularity indexing and query processing. DKE 35 (3): 239-257 (2000) 107 Ron Dolin , Divyakant Agrawal, Amr El Abbadi : Scalable Sollection Summarization and Selection. ACM DL 1999 : 49-58 106 Steven Geffner , Divyakant Agrawal, Amr El Abbadi , Terence R. Smith : Browsing Large Digital Library Collections Using Classification Hierarchies. CIKM 1999 : 195-201 105 Hakan Ferhatosmanoglu , Divyakant Agrawal, Amr El Abbadi : Clustering Declustered Data for Efficient Retrieval. CIKM 1999 : 343-350 104 Daniel Wu , Divyakant Agrawal, Amr El Abbadi : StratOSphere: Unification of Code, Data, Location, Scope, and Mobility. DOA 1999 : 12-23 103 Kevin O'Gorman , Divyakant Agrawal, Amr El Abbadi : Posse: A Framework for Optimizing Incremental View Maintenance at Data Warehouse. DaWaK 1999 : 106-115 102 Ioana Stanoi , Divyakant Agrawal, Amr El Abbadi : Modeling and Maintaining Multi-View Data Warehouses. ER 1999 : 161-175 101 JoAnne Holliday , Divyakant Agrawal, Amr El Abbadi : The Performance of Database Replication with Group Multicast. FTCS 1999 : 158-165 100 Steven Geffner , Divyakant Agrawal, Amr El Abbadi , Terence R. Smith : Relative Prefix Sums: An Efficient Approach for Querying Dynamic OLAP Data Cubes. ICDE 1999 : 328-335 99 Hakan Ferhatosmanoglu , Divyakant Agrawal, Amr El Abbadi : Concentric Hyperspaces and Disk Allocation for Fast Parallel Range Searching. ICDE 1999 : 608-615 98 Ioana Stanoi , Divyakant Agrawal, Amr El Abbadi , Shirish Hemant Phatak , B. R. Badrinath : Data Warehousing Alternatives for Mobile Environments. MobiDE 1999 : 110-115 97 Wen-Syan Li , Quoc Vu , Edward Chang , Divyakant Agrawal, Kyoji Hirata , Sougata Mukherjea , Yi-Leh Wu , Corey Bufi , Chen-Chuan K. Chang , Yoshinori Hara , Reiko Ito , Yutaka Kimura , Kazuyuki Shimazu , Yukiyoshi Saito : PowerBookmarks: A System for Personalizable Web Information Organization, Sharing, and Management. SIGMOD Conference 1999 : 565-567 96 JoAnne Holliday , Divyakant Agrawal, Amr El Abbadi : Database Replication: If You Must be Lazy, be Consistent. Symposium on Reliable Distributed Systems 1999 : 304-305 95 Daniel Wu , Divyakant Agrawal, Amr El Abbadi : Mobility and Extensibility in the StratOSphere Framework. Distributed and Parallel Databases 7 (3): 289-317 (1999) 94 Steven Geffner , Mirek Riedewald , Divyakant Agrawal, Amr El Abbadi : Data Cubes in Dynamic Environments. IEEE Data Engineering Bulletin 22 (4): 31-40 (1999) 93 Wen-Syan Li , Quoc Vu , Divyakant Agrawal, Yoshinori Hara , Hajime Takano : PowerBookmarks: A System for Personalizable Web Information Organization, Sharing, and Management. WWW8 / Computer Networks 31 (11-16): 1375-1389 (1999) 92 Steven Geffner , Divyakant Agrawal, Amr El Abbadi , Terence R. Smith , Mary Larsgaard : Smart Indexes for Efficient Browsing of Library Collections. ADL 1998 : 107-116 91 Wen-Syan Li , Yi-Leh Wu , Corey Bufi , Kevin Chang , Divyakant Agrawal, Yoshinori Hara : PowerBookmarks: An Advanced Web Bookmark Database System and its Information Sharing and Management. FODO 1998 : 0- 90 Ioana Stanoi , Divyakant Agrawal, Amr El Abbadi : Weak Consistency in Distributed Data Warehouses. FODO 1998 : 0- 89 Ioana Stanoi , Divyakant Agrawal, Amr El Abbadi : Using Broadcast Primitives in Replicated Databases. ICDCS 1998 : 148-155 88 Sunil Prabhakar , Khaled A. S. Abdel-Ghaffar , Divyakant Agrawal, Amr El Abbadi : Cyclic Allocation of Two-Dimensional Data. ICDE 1998 : 94-101 87 Daniel Wu , Divyakant Agrawal, Amr El Abbadi : StratOSphere: Mobile Processing of Distributed Objects in Java. MOBICOM 1998 : 121-132 86 Kothuri Venkata Ravi Kanth , Divyakant Agrawal, Ambuj K. Singh : Dimensionality Reduction for Similarity Searching in Dynamic Databases. SIGMOD Conference 1998 : 166-176 85 Sunil Prabhakar , Divyakant Agrawal, Amr El Abbadi : Efficient Disk Allocation for Fast Similarity Searching. SPAA 1998 : 78-87 84 Divyakant Agrawal, Amr El Abbadi : Letter from the Special Issue Editor. Data Engineering Bulletin 21 (4): 2 (1998) 83 M. L. Liu , Divyakant Agrawal, Amr El Abbadi : The Performance of Two Phase Commit Protocols in the Presence of Site Failures. Distributed and Parallel Databases 6 (2): 157-182 (1998) 82 X. Cheng , Ron Dolin , M. Neary , Sunil Prabhakar , Kothuri Venkata Ravi Kanth , Daniel Wu , Divyakant Agrawal, Amr El Abbadi , Michael Freeston , Ambuj K. Singh , Terence R. Smith , Jianwen Su : Scalable Access Within the Context of Digital Libraries. ADL 1997 : 70-81 81 Ron Dolin , Divyakant Agrawal, Amr El Abbadi , Laura K. Dillon : Pharos: A Scalable Distributed Architecture for Locating Heterogeneous Information Sources. CIKM 1997 : 348-355 80 Ron Dolin , Divyakant Agrawal, Amr El Abbadi : Classifying Network Architectures for Locating Information Sources. DASFAA 1997 : 31-40 79 Sunil Prabhakar , Divyakant Agrawal, Amr El Abbadi , Ambuj K. Singh : Scheduling Tertiary I/O in Database Applications. DEXA Workshop 1997 : 722-727 78 Daniel Wu , Divyakant Agrawal, Amr El Abbadi , Ambuj K. Singh : A Java-Based Framework for Processing Distributed Objects. ER 1997 : 333-346 77 Divyakant Agrawal, Gustavo Alonso , Amr El Abbadi , Ioana Stanoi : Exploiting Atomic Broadcast in Replicated Databases (Extended Abstract). Euro-Par 1997 : 496-503 76 Sunil Prabhakar , Divyakant Agrawal, Amr El Abbadi , Ambuj K. Singh , Terence R. Smith : Browsing and Placement of Multi-Resolution Images on Secondary Storage. ICMCS 1997 : 636-637 75 Kothuri Venkata Ravi Kanth , Amr El Abbadi , Divyakant Agrawal, Ambuj K. Singh : Indexing Non-Uniform Spatial Data. IDEAS 1997 : 289-298 74 Sunil Prabhakar , Divyakant Agrawal, Amr El Abbadi , Ambuj K. Singh , Terrence Smith : Browsing and Placement of Multiresolution Images on Parallel Disks. IOPADS 1997 : 102-113 73 Ioana Stanoi , Divyakant Agrawal, Amr El Abbadi : Using Broadcast Primitives in Replicated Databases (Abstract). PODC 1997 : 283 72 Divyakant Agrawal, Amr El Abbadi , R. Steinke : Epidemic Algorithms in Replicated Databases (Extended Abstract). PODS 1997 : 161-172 71 Sunil Prabhakar , Divyakant Agrawal, Amr El Abbadi , Ambuj K. Singh : A brief survey of tertiary storage systems and research. SAC 1997 : 155-157 70 Divyakant Agrawal, Amr El Abbadi , Ambuj K. Singh , Tolga Yurek : Efficient View Maintenance at Data Warehouses. SIGMOD Conference 1997 : 417-427 69 Suresh Kumar , Eng-Kee Kwang , Divyakant Agrawal: Caprera: An Activity Framework for Transaction Processing on Wide-Area Networks. VLDB 1997 : 585-589 68 Man Hon Wong , Divyakant Agrawal, Hang Kwong Mak : Bounded Inconsistency for Type-Specific Concurrency Control. Distributed and Parallel Databases 5 (1): 31-75 (1997) 67 Divyakant Agrawal, Ömer Egecioglu , Amr El Abbadi : Analysis of Quorum-Based Protocols for Distributed (k+1)-Exclusion. IEEE Transactions on Parallel and Distributed Systems 8 (5): 533-537 (1997) 66 Divyakant Agrawal, Ömer Egecioglu , Amr El Abbadi : Billiard Quorums on the Grid. Information Processing Letters 64 (1): 9-16 (1997) 65 X. Cheng , Ron Dolin , M. Neary , Sunil Prabhakar , Kothuri Venkata Ravi Kanth , Daniel Wu , Divyakant Agrawal, Amr El Abbadi , Michael Freeston , Ambuj K. Singh , Terence R. Smith , Jianwen Su : Scalable Access Within the Context of Digital Libraries. Int. J. on Digital Libraries 1 (4): 358-376 (1997) 64 Vashudha Krishnaswamy , Divyakant Agrawal, John L. Bruno , Amr El Abbadi : Relative Serializability: An Approach for Relaxing the Atomicity of Transactions. JCSS 55 (2): 344-354 (1997) 63 Gustavo Alonso , Divyakant Agrawal, Amr El Abbadi , C. Mohan : Functionality and Limitations of Current Workflow Management Systems. submitted to IEEE Expert: (1997) 62 Amitabh Saran , Divyakant Agrawal, Amr El Abbadi , Terence R. Smith , Jianwen Su : Scientific Modeling Using Distributed Resources. ACM-GIS 1996 : 68-75 61 Daniel Wu , Divyakant Agrawal, Amr El Abbadi , Ambuj K. Singh , Terence R. Smith : Efficient Retrieval for Browsing Large Image Databases. CIKM 1996 : 11-18 60 Gustavo Alonso , Divyakant Agrawal, Amr El Abbadi , Mohan Kamath , Roger Günthör , C. Mohan : Advanced Transaction Models in Workflow Contexts. ICDE 1996 : 574-581 59 Gustavo Alonso , Divyakant Agrawal, Amr El Abbadi : Process Synchronization In Workflow Management Systems. SPDP 1996 : 0- 58 Gustavo Alonso , Roger Günthör , Mohan Kamath , Divyakant Agrawal, Amr El Abbadi , C. Mohan : Exotica/FMDC: A Workflow Management System for Mobile and Disconnected Clients. Distributed and Parallel Databases 4 (3): 229-247 (1996) 57 Divyakant Agrawal, Amr El Abbadi : Using Reconfiguration for Efficient Management of Replicated Data. TKDE 8 (5): 786-801 (1996) 56 Divyakant Agrawal, Ömer Egecioglu , Amr El Abbadi : Analysis of Quorum-Based Protocols for Distributed (k+1)-Exclusion. COCOON 1995 : 161-170 55 Divyakant Agrawal, John L. Bruno , Amr El Abbadi , Vashudha Krishnaswamy : Managing Concurrent Activities in Collaborative Environments. CoopIS 1995 : 112-124 54 Gustavo Alonso , Roger Günthör , Mohan Kamath , Divyakant Agrawal, Amr El Abbadi , C. Mohan : Exotica/FMDC: Handling Disconnected Clients in a Workflow Management System. CoopIS 1995 : 99-110 53 Anuradha Mahadevan Sastri , Divyakant Agrawal, Amr El Abbadi , Terence R. Smith : Distributed Access System for Uniform and Scalbale Data and Service Access. IEEE Symposium on Mass Storage Systems 1995 : 284-292 52 Keith K. Park , Terence R. Smith , Divyakant Agrawal: System Abstraction and Interface for Interoperable Server Objects in OMEGA. RIDE-DOM 1995 : 132-139 51 Terence R. Smith , Jianwen Su , Amr El Abbadi , Divyakant Agrawal, Gustavo Alonso , Amitabh Saran : Computational modeling systems. IS 20 (2): 127-153 (1995) 50 Divyakant Agrawal, Amr El Abbadi : Ordered Sharing a New Lock Primitive for Database Systems. IS 20 (5): 361-392 (1995) 49 Divyakant Agrawal, Amr El Abbadi : Constrained Shared Locks for Increased Concurrency in Databases. JCSS 51 (1): 53-63 (1995) 48 Man Hon Wong , Divyakant Agrawal: Context-Specific Synchronization for Atomic Data Types in Object-Based Databases. TCS 149 (1): 179-199 (1995) 47 Divyakant Agrawal, Amr El Abbadi , Richard Jeffers , Lijing Lin : Ordered Shared Locks for Real-Time Databases. VLDB Journal 4 (1): 87-126 (1995) 46 Amitabh Saran , Anuradha Mahadevan Sastri , Divyakant Agrawal, Amr El Abbadi , Terence R. Smith : Experiences in the Design of a Kernel for Computational Modeling Systems. COMAD 1994 : 0- 45 Gustavo Alonso , Radek Vingralek , Divyakant Agrawal, Yuri Breitbart , Amr El Abbadi , Hans-Jörg Schek , Gerhard Weikum : A Unified Approach to Concurrency Control and Transaction Recovery (Extended Abstract). EDBT 1994 : 123-130 44 M. L. Liu , Divyakant Agrawal, Amr El Abbadi : The Performance of Two-phase Commit Protocols in the Presence of Site Failures. FTCS 1994 : 234-243 43 Hong Va Leong , Divyakant Agrawal: Using Message Semantics to Reduce Rollback in Optimistic Message Logging Recovery Schemes. ICDCS 1994 : 227-234 42 Rodolfo F. Resende , Divyakant Agrawal, Amr El Abbadi : Semantic Locking in Object-Oriented Database Systems. OOPSLA 1994 : 388-402 41 Divyakant Agrawal, Manhoi Choy , Hong Va Leong , Ambuj K. Singh : Mixed Consistency: A Model for Parallel Programming (Extended Abstract). PODC 1994 : 101-110 40 Gustavo Alonso , Divyakant Agrawal, Amr El Abbadi : Reducing Recovery Constraints on Locking based Protocols. PODS 1994 : 129-138 39 Divyakant Agrawal, John L. Bruno , Amr El Abbadi , Vashudha Krishnaswamy : Relative Serializbility: An Approach for Relaxing the Atomicity of Transactions. PODS 1994 : 139-149 38 Divyakant Agrawal, Amr El Abbadi : A Non-Restrictive Concurrency Control Protocol for Object Oriented Databases. Distributed and Parallel Databases 2 (1): 7-31 (1994) 37 Gustavo Alonso , Radek Vingralek , Divyakant Agrawal, Yuri Breitbart , Amr El Abbadi , Hans-Jörg Schek , Gerhard Weikum : Unifying concurrency control and recovery of transactions. IS 19 (1): 101-115 (1994) 36 Divyakant Agrawal, Amr El Abbadi , A. E. Lang : The Performance of Protocols Based on Locks with Ordered Sharing. TKDE 6 (5): 805-818 (1994) 35 Man Hon Wong , Divyakant Agrawal: Context-Based Synchronisation: An Approach beyond Semantics for Concurrency Control. PODS 1993 : 276-287 34 Hong Va Leong , Divyakant Agrawal, Jonathan R. Agre : Using Message Semantics to Reduce Rollback in the Time Wrap Mechanism. WDAG 1993 : 309-323 33 Terence R. Smith , Jianwen Su , Divyakant Agrawal, Amr El Abbadi : Database and Modeling Systems for the Earth Sciences. Data Engineering Bulletin 16 (1): 33-37 (1993) 32 Divyakant Agrawal, Soumitra Sengupta : Modular Synchronization in Distributed, Multiversion Databases: Version Control and Concurrency Control. TKDE 5 (1): 126-137 (1993) 31 O. T. Satyanarayanan , Divyakant Agrawal: Efficient Execution of Read-Only Transactions in Replicated Multiversion Databases. TKDE 5 (5): 859-871 (1993) 30 Divyakant Agrawal, Amr El Abbadi , Ambuj K. Singh : Consistency and Orderability: Semantics-Based Correctness Criteria for Databases. TODS 18 (3): 460-486 (1993) 29 Divyakant Agrawal, Amr El Abbadi : A Non-Restrictive Concurrency Control for Object Oriented Databases. EDBT 1992 : 469-482 28 Hong Va Leong , Divyakant Agrawal: Type-Specific Coherence Protocols for Distributed Shared Memory. ICDCS 1992 : 434-441 27 Man Hon Wong , Divyakant Agrawal: Context-Specific Synchronization for Atomic Data Types. ICDT 1992 : 201-215 26 Divyakant Agrawal, Amr El Abbadi , Richard Jeffers : An Approach to Eliminate Transaction Blocking in Locking Protocols. PODS 1992 : 223-234 25 Man Hon Wong , Divyakant Agrawal: Tolerating Bounded Inconsistency for Increasing Concurrency in Database Systems. PODS 1992 : 236-245 24 Divyakant Agrawal, Amr El Abbadi , Richard Jeffers : Using Delayed Commitment in Locking Protocols for Real-Time Databases. SIGMOD Conference 1992 : 104-113 23 Divyakant Agrawal, Amr El Abbadi : Transaction Management in Database Systems. Transaction Models Book 1992 : 1-31 22 Divyakant Agrawal, Amr El Abbadi : Resilient Logical Structures for Efficient Management of Replicated Data. VLDB 1992 : 151-162 21 Divyakant Agrawal, Jonathan R. Agre : Replicated Objects in Time Warp Simulations. Winter Simulation Conference 1992 : 657-664 20 Divyakant Agrawal, Amr El Abbadi : Dynamic Logical Structures: A Position Statement for Managing Replicated Data. Workshop on the Management of Replicated Data 1992 : 26-29 19 Divyakant Agrawal, Jonathan R. Agre : Recovering from Multiple Process Failures in the Time Warp Mechanism. IEEE Transactions on Computers 41 (12): 1504-1514 (1992) 18 Divyakant Agrawal, Amr El Abbadi : The Generalized Tree Quorum Protocol: An Efficient Approach for Managing Replicated Data. TODS 17 (4): 689-717 (1992) 17 Divyakant Agrawal, Amr El Abbadi , A. E. Lang : Performance Characteristics of Protocols With Ordered Shared Locks. ICDE 1991 : 592-601 16 Divyakant Agrawal, V. Krishnamurthy : Using Multiversion Data for Non-interfering Execution of Write-only Transactions. SIGMOD Conference 1991 : 98-107 15 Divyakant Agrawal, Amr El Abbadi : An Efficient and Fault-Tolerant Solution for Distributed Mutual Exclusion. TOCS 9 (1): 1-20 (1991) 14 Divyakant Agrawal, A. Malpani : Efficient Dissemination of Information in Computer Networks. The Computer Journal 34 (6): 534-541 (1991) 13 Divyakant Agrawal, Amr El Abbadi : Locks with Constrained Sharing. PODS 1990 : 85-93 12 Divyakant Agrawal, Amr El Abbadi : The Tree Quorum Protocol: An Efficient Approach for Managing Replicated Data. VLDB 1990 : 243-254 11 Divyakant Agrawal, Amr El Abbadi : Localized-Access Protocols for Replicated Databases. WDAG 1990 : 245-262 10 Divyakant Agrawal, Amr El Abbadi : Efficient Techniques for Replicated Data Management. Workshop on the Management of Replicated Data 1990 : 48-52 9 Divyakant Agrawal, Amr El Abbadi : Exploiting Logical Structures in Replicated Databases. IPL 33 (5): 255-260 (1990) 8 Divyakant Agrawal, Amr El Abbadi : Storage Efficient Replicated Databases. TKDE 2 (3): 342-352 (1990) 7 Divyakant Agrawal, Amr El Abbadi : Integrating Security with Fault-Tolerant Distributed Databases. The Computer Journal 33 (1): 71-78 (1990) 6 Divyakant Agrawal, Amr El Abbadi : Efficient Solution to the Distributed Mutual Exclusion Problem. PODC 1989 : 193-200 5 Divyakant Agrawal, Soumitra Sengupta : Modular Synchronization in Multiversion Databases: versionControl and Concurrency Control. SIGMOD Conference 1989 : 408-417 4 Jonathan R. Agre , Divyakant Agrawal: Recovering from Process Failures in the Time Warp Mechanism. Symposium on Reliable Distributed Systems 1989 : 53-62 3 Divyakant Agrawal, Amr El Abbadi : Quorum Consensus Algorithms for Secure and Reliable Data. Symposium on Reliable Distributed Systems 1988 : 44-53 2 Divyakant Agrawal, Amr El Abbadi : Reducing Storage for Quorum Consensus Algorithms. VLDB 1988 : 419-430 1 Divyakant Agrawal, Arthur J. Bernstein , Pankaj Gupta , Soumitra Sengupta : Distributed Optimistic Concurrency Control with Reduced Rollback. Distributed Computing 2 (1): 45-59 (1987) DiSC'01 Copyright ©2002 ACM Inc. |