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Minimization in Cooperative Response to Failing Database Queries

Parke Godfrey
1997 International Journal of Cooperative Information Systems  
Database systems do not provide the functionality of these types of cooperative responses.  ...  If there is not a cause for the query's failure, it is worthwhile to report the part of the query which failed. To identify a minimal failing subquery (MFS) of the query is the best way to do this.  ...  Acknowledgments A number of people have contributed to the ideas in this work. I thank Jos e Alberto Fern andez for rst formalizing the MEL problem as a characterization of MFS.  ... 
doi:10.1142/s0218843097000070 fatcat:b254bj2qizcsddzxy5lwtjqmdy

Efficient and Robust Database Support for Data-Intensive Applications in Dynamic Environments

Jon Olav Hauglid, Kjetil Nørvåg, Norvald H. Ryeng
2009 Proceedings / International Conference on Data Engineering  
For this purpose we have developed DASCOSA-DB, a P2P-based distributed database system, which in addition to providing location-transparent storage and querying, also includes novel features like efficient  ...  partial restart of queries and redistribution of query operators in the context of failure, dynamic refragmentation and allocation, and distributed semantic caching.  ...  Assume then that the simple query SELECT * FROM nation JOIN customer is issued from site S 10 , resulting in the query tree in Fig. 3 (site S 1 was selected for the join operator during planning to minimize  ... 
doi:10.1109/icde.2009.12 dblp:conf/icde/HauglidNR09 fatcat:bhvlsh3dqfdhrdxihipehhxege

Effective reformulation of Boolean queries with concept lattices [chapter]

Claudio Carpineto, Giovanni Romano
1998 Lecture Notes in Computer Science  
In this paper we describe an approach, implemented in a system named REFINER, to combining Boolean information retrieval and content-based navigation with concept lattices.  ...  The cluster network displayed by REFINER shows the result of the query along with a set of minimal query refinements/enlargements. REFINER has two main advantages.  ...  Acknowledgments We thank three anonymous reviewers for pointing out relevant work in the field of cooperative databases and for many useful comments and suggestions.  ... 
doi:10.1007/bfb0055993 fatcat:g6ehpj3bind7po3vbxcgvyaxwm

Collaborative Caching Architecture for Continuous Query in Mobile Database

Elfaki
2011 American Journal of Economics and Business Administration  
Problem statement: Cooperative caching, which allows sharing and coordination of cached data among clients, is a potential technique to improve the data access performance and availability in mobile ad  ...  Approach: In this study, we propose a Cluster Cache Collaborative (CCC) to reduce the average delay and increase the local cache hit ratio.  ...  In addition, Cocktail resolution is used when the local cache misses and the request fails in its cooperation zone.  ... 
doi:10.3844/ajebasp.2011.33.39 fatcat:kvftp2krhjgs5njqoatfrkqsyi

Generating cooperative question-responses by means of erotetic search scenarios

Paweł Łupkowski, Dorota Leszczyńska-Jasion
2014 Logic and Logical Philosophy  
The concept of cooperative question-responses as an extension of cooperative behaviours used by interfaces for databases and information systems is proposed.  ...  A procedure to generate question-responses based on question dependency and erotetic search scenarios is presented. The procedure is implemented in Prolog.  ...  We would like to give our thanks to M. Urbański for helpful feedback and comments on a draft of this article. We also thank an anonymous referee for her/his helpful remarks.  ... 
doi:10.12775/llp.2014.017 fatcat:a3hfsefnwvh6tbv4bdhgyciv44

FLEX: a tolerant and cooperative user interface to databases

A. Motro
1990 IEEE Transactions on Knowledge and Data Engineering  
conventions of cooperation in human discourse, including corrective responses that detect erroneous presuppositions and suggestive responses that anticipate followup queries.  ...  Closer to the framework of FLEX, several works have dealt with the problem of empty answers that are issued by typical database systems in response to formal language queries.  ...  Sorenson, "Resolving the query inference problem," ACM Trans. Database Syst., vol. 9, no. 3, pp. 348-368, Sept. 1984  ... 
doi:10.1109/69.54722 fatcat:jjflg5xnyneendtqhojo4rdr3e

Cooperative Techniques for SPARQL Query Relaxation in RDF Databases [chapter]

Géraud Fokou, Stéphane Jean, Allel Hadjali, Mickael Baron
2015 Lecture Notes in Computer Science  
While previous works on query relaxation over RDF data have focused on defining new relaxation operators, we investigate in this paper techniques to find the parts of an RDF query that are responsible  ...  This paper addresses the problem of failing RDF queries. Query relaxation is one of the cooperative techniques that allows providing users with alternative answers instead of an empty result.  ...  The set of all MFSs of a query Q is denoted by mf s(Q). Each MFS is a minimal part of the query that fails.  ... 
doi:10.1007/978-3-319-18818-8_15 fatcat:tfwpz75luzfc5n4pq4uzsh3tki

Finding Preferred Query Relaxations in Content-Based Recommenders [chapter]

Dietmar Jannach
2008 Studies in Computational Intelligence  
at least initially to constructing an adequate query to the catalog.  ...  In such approaches, however, the problem can easily arise that the catalog query fails because none of the items in the catalog fulfils all of the user's constraints.  ...  results that were achieved in the area 'cooperative query answering' [3] .  ... 
doi:10.1007/978-3-540-77623-9_5 fatcat:jymzexxborbgngprz3zb66mbia

Finding Preferred Query Relaxations in Content-based Recommenders

Dietmar Jannach
2006 2006 3rd International IEEE Conference Intelligent Systems  
at least initially to constructing an adequate query to the catalog.  ...  In such approaches, however, the problem can easily arise that the catalog query fails because none of the items in the catalog fulfils all of the user's constraints.  ...  results that were achieved in the area 'cooperative query answering' [3] .  ... 
doi:10.1109/is.2006.348445 fatcat:35pz2uq2anglfhhvhndlb5iwk4

Logic and Databases: Past, Present, and Future

Jack Minker
1997 The AI Magazine  
I review developments in the field, assess contributions, consider the status of implementations of deductive databases, and discuss future work needed in deductive databases. Articles  ...  Gallaire, Minker, and Nicolas stated that logic and databases was a field in its own right. This was the first time that this designation was made.  ...  Acknowledgments This article is a condensation, and in some cases an expansion, of an invited keynote address presented at the Workshop on Logic in Databases in San Miniato, Italy, in 1996.  ... 
doi:10.1609/aimag.v18i3.1304 dblp:journals/aim/Minker97 fatcat:6foa4j2a45cabojbsyxj7rwpfq

Modular Generation of Relational Query Paraphrases

Michael Minock
2006 Research on Language and Computation  
This article proposes a novel technique to generate natural language descriptions for a wide class of relational database queries.  ...  To demonstrate this modularity, this fragment is shown to be adequate for several cooperative reasoning techniques.  ...  For queries in L the strategy to identify minimal failing sub-queries is to start with simple tests on attribute values looking for an empty answer set.  ... 
doi:10.1007/s11168-006-9009-8 fatcat:g2v6rf2p5jbcja7tie3usu3j54

Multi-Agent System for Detecting and Blocking SQL Injection

Niraj Kulkarni, D R Anekar, Mayur Ghadge, Rohit Garde
2013 International Journal of Computer Applications  
responsible for syntax checking of the SQL query fired.  ...  The chance of the query reaching to the human expert agent in this system is very low.  ...  AKCNOWLEDGEMENT We take this opportunity to thank all the people involved in making this project a success. We want to thank the authors whose study helped us in our study which are Cristian I.  ... 
doi:10.5120/10714-5697 fatcat:djovhx3tpfb5tcqmjdysjow3be

Agent-based Spatial Query Processing and Resource Management in Grid Environment

Yufei Bai, Xiujun Ma, Kunqing Xie, Ping Zhang, Xiong Li, Yixian Sun, Ke Li
2008 2008 Seventh International Conference on Grid and Cooperative Computing  
The cooperative task processing and resource management among autonomous and heterogeneous spatial database systems in a grid environment is a challenge work.  ...  In this paper, we propose a BDI agent framework to process spatial query and dynamically manage resource in a grid environment.  ...  query executor among several candidates ship the necessary data to them, (4) maintaining the spatial query cooperative processing task when query failed, and so on.  ... 
doi:10.1109/gcc.2008.117 dblp:conf/gcc/BaiMX0LSL08 fatcat:xbn7eldgxrdeboilu2fhr47fza

The multimedia articulation of answers in a natural language database query system

Susan E. Brennan
1988 Proceedings of the second conference on Applied natural language processing -  
This paper describes a domain independent strategy for the multimedia articulation of answers elicited by a natural language interface to database query applications.  ...  Multimedia answers include videodisc images and heuristically-produced complete sentences in text or text-to-speech form. Deictic reference and feedback about the discourse are enabled.  ...  It was done in collaboration with HPLab's Natural Language group. I would especially like to thank Lew Creary, Dan Flickinger, Lyn Friedman and Herb Clark.  ... 
doi:10.3115/974235.974237 dblp:conf/anlp/Brennan88 fatcat:pz5o6dinzvfxlebpz4cugrm7yy

Enabling P2P Cooperative WMS Proxy Caching and Prefetching in an Educational Environment [chapter]

Jeffrey A. Bergamini, Dr. Michael Haungs
2007 Lecture Notes in Geoinformation and Cartography  
In this paper, we present the details of several novel techniques that enable P2P cooperative caching and prefetching of OGC WMS data in an educational lab environment, via an implicit and flexible pyramid  ...  The techniques are standards-compliant and client-transparent, and provide dramatic improvement in user response times while reducing impact on remote WMS servers.  ...  It pro vides a distributed network of client-side proxies that cooperatively manage WMS connections in order to optimize user response times.  ... 
doi:10.1007/978-3-540-72385-1_1 fatcat:r5bzuc3zzrbibia2swp4xztdyq
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