R.J. Bayardo Jr., W. Bohrer, R. Brice, A. Cichocki, J. Fowler, A. Helal, V. Kashyap, T. Ksiezyk, G. Martin, M. Nodine, M. Rashid, M. Rusinkiewicz, R. Shea, C. Unnikrishnan, A. Unruh, and D. Woelk. InfoSleuth: Agent-Based Semantic Integration of Information in Open and Dynamic Environments. ACM SIGMOD Record, 26(2):195--206, June 1997.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....functionality compared to existing web services. In the context of dynamically composing new web services from existing web services, the existing web services can be viewed as data sources. In recent years various mediator systems, such as the Information Manifold [1] InfoMaster [2] InfoSleuth [3], and Ariadne [4] have been used to provide a unified query interface to various data sources. At the same time the theoretical fundamentals of data integration have been investigated and are now well understood [5, 6] The traditional mediator systems accept a specific user query and reformulate ....

Bayardo Jr., R.J., et al. Infosleuth: Agent-based semantic integration of information in open and dynamic environments. in In Proceedings of ACM $IGMOD-97. 1997.

....be utilized to dynamically compose new web sources similar to the Building Finder application. The Information integration literature includes a wide variety of mediator systems [Wiederhold 1996] such as the Information Manifold [Levy et al. 1996] InfoMaster [Genesereth et al. 1997] InfoSleuth [Bayardo Jr. et al. 1997], and Ariadne [Knoblock et al. 2001] All of the above mentioned systems can answer specific user queries by integrating information from various information sources, for example, find property values for all properties in Los Angeles, California where John smith resides. The goal of the ....

Bayardo Jr., R. J., Bohrer, W., Brice, R., Cichocki, A., Flower, J., Helal, A., Kashyap, V., Ksiezyk, T., Martin, G., Nodine, M., Rashid, M., Rusinkiewicz, M., Shea, R., Unnikrishnan, C., Unruh, A. and Woelk, D. 1997. Infosleuth: Agent-Based Semantic Integration of Information in Open and Dynamic Environments. In Proceedings of ACM SIGMOD-97

....what kind of information the wrappers can provide. Given a user query it will then contact the wrappers, integrate the results, and return them to the user. Recently, much e ort has been devoted to information agents resulting in systems such as SIMS [7,8] UMDL [9] Infomaster [10] InfoSleuth [11], Softbot [12] and EDITtoTrEMBL [3] The EDITtoTrEMBL environment comprises two kinds of agents. One, the dispatchers, act as a combination of mediator and facilitator. The other, analyzers, function as wrappers around the incorporated heterogeneous data sources to provide a homogenous ....

R. J. Bayardo, W. Bohrer, R. Brice, A. Cichoki, J. Fowler, A. Helal, V. Kashyap, T. Ksiezyk, G. Martin, M. Nodine, M. Rashid, M. Rusinkiewicz, R. Shea, C. Unnikrishnan, A. Unruh, D. Woelk, Infosleuth: Agent-based semantic integration of information in open and dynamic environments, in: ACM SIGMOD, 1997, pp. 195-206.

....all candidates and discarding those that don t work. Instead, there has to be a registration service that allows agents with abilities to offer to make their presence known. When the agent signs in, it must specify what capabilities it offers. This specification is in an advertising language [3, 13]. The best known example is the LARKS notation of [24] although, as we shall see, LARKS does more than that) It is reasonable to suppose that an agent has to cope with just one advertising language. One plausible idea is that a registration service would be maintained by a consortium of ....

....To make this happen, there must be axioms that allow the database mediator to map predicates in the source databases to predicates in the abstract database. If the component information sources don t look like databases, they can be wrapped with programs that make them look like databases [21, 28, 2, 3, 19, 1]. We don t think this model fits the case of agent communication particularly well. Couplings between agents may be less permanent than integration of information sources. As the examples in this paper will show, the I O behavior of an agent may be most naturally described in terms of data ....

R. J. Bayardo, W. Bohrer, R. Brice, A. Cichocki, J. Fowler, A. Helal, V. Kashyap, T. Ksiezyk, G. Martin, M. Nodine, M. Rashid, M. Rusinkiewicz, R. Shea, C. Unnikrishnan, A. Unruh, and D. Woelk. Infosleuth: Agent-based semantic integration of information in open and dynamic environments. ACM SIGMOD '97, pages 195-206, 1997. ACM.

....de mots cl6s . bien des 6gards, ce type de recherche est limit6 et il convient de trouver de nouvelles techniques pour relever le d6fi d une recherche d information plus intelligente sur la toile, particuli rement lorsqu on d6sire acc6der h des sources d informations h6t6rognes h6rit6es [4]. Un autre d6fi qu il convient de relever, et qui prolonge le pr6c6dent, tourne autour du d6veloppement de logiciel s complexes sur la toile [ 12] De tels logiciels sont g6n6ralement caract6ris6s par l impossibilit6 de pr6dire les services offerrs dans les temps requis. Par exemple, les ....

....un 6norme d6fi 34 du point de vue ddcouverte, accs, mise h jour et analyse de l information. Ceci les a alors amend h chercher h amdliorer Carnot en vue de lui permettre la recherche d informations dans des sources gdographiquement distantes et dynamiques comme dans le cas de la toile. InfoSleuth [3, 4] a donc pris la relive de Carnot en 1995. Pour drivelopper InfoSleuth, les chercheurs de MCC ont utilisd des technologies standardisdes comme: a) KQML (Knowledge Query and Manipulation Language) 14] b) KIF (Knowledge Interface Format) 15] c) HTTP (Hyper Text Transfert Protocol) 6] d) ....

R. J. Bayardo, W. Bohrer, R. Brice, A. Cichocki, J. Fowler, A. Helal, V. Kashyap, T. Ksiezyk, G. Martin, M. Nodine, M. Rashid, M. Rusin- kiewicz, R. Shea, C. Unnikrishnan, A. Unruh et D. Woelk. Infosleuth: agent-based semantic integration of information in open and dynamic environments. In Huhns M. N. et Singh M.P., 6diteurs, Reading in Agents, pages 205-216, SF, CA, 1998. Morgan Kaufmann.

....[13] and Garlic [20] are what may be termed query oriented. They pro vide mechanisms by which users define global schema constructs as views over source schema constructs (or vice versa in the case of IM) More recent work on automatic wrapper generation [23, 7, 2, 8] and agent based mediation [3] is also query oriented. In contrast, our approach is schema transformation oriented. We provide a flexible framework by which transformations on schemas can be specified. These transformations are then used to automate the translation of queries between global and source schemas. Clio [18] also ....

R.J. Bayardo et al. InfoSleuth: Agent-based semantic integration of information in open and dynamic environments. SlGMOD Record, 26(2):195-206, June 1997.

....both tables. The soft version of the join, Q 2 , makes a much weaker assumption namely, that names for the same object will be similar. Soft joins are thus useful for information integration systems which provide a uniform query based interface to many heterogenous information sources (e.g. [28, 17, 2, 4, 18, 27, 31, 41]) In fact, the original motivation for developing WHIRL was to facilitate information integration with soft joins. A more complex query might search reviews by plot to see where the latest science ction comedy is playing: Q 4 ) movieListing(Cinema,Movie1,Times) Query Q 4 combines IR ....

....for approximate matching. As well as having robust behavior for many domains, these have the advantage of eciency; most other approximate matching schemes are relatively expensive, and perhaps for this reason, have not been used extensively in implemented Web based information integration systems [28, 17, 2, 4, 18, 27, 31, 41]. WHIRL is also the rst system of this sort to integrate approximate matching with deduction. This is a crucial step because, as shown in Section 4.4, correct inference is sometimes possible on the basis of incorrect matches; these inferences would be missed if matching were done o line. ....

R. J. Bayardo, W. Bohrer, R. Brice, A. Cichocki, J. Fowler, A. Helal, V. Kashyap, T. Ksiezyk, G. Martin, M. Nodine, M. Rashid, M. Rusinkiewicz, R. Shea, C. Unnikrishan, A. Unruh, and D. Woelk. Infosleuth: an agent-based semantic integration of information in open and dynamic environments. In Proceedings of the 1997.

....a distributed environment where the knowledge is not centralized in few systems permanent connected and each actor do not know a priori where its information need is located, the traditional mediator and federated databases approaches are not appropriate. Moreover, there are other approaches (e.g. [3,13,14]) that provide a source independent, query independent mediator. For these reasons, they are considered more flexible to cope with such an environment. Nevertheless, such approaches are principally focused on information integration in traditional Web based systems. Therefore, such approaches do ....

....rules over them. Moreover, this peer agent maintains a sort of memory (CaseMemory, see Figure 4 1) of the past problems and their solutions (i.e. sequences of actions and their receivers) Several models have been proposed to represent knowledge in order to perform retrieval techniques (e.g. [3,13,14]) In particular, our model is based on [15,16] that use a Case Base Reasoning (CBR) approach. Therefore, the CBR learning capacity is based on the peer agent s case memory. Namely, a knowledge base in which a peer agent has stored the cases solved in the past. In particular, as you can see in ....

[Article contains additional citation context not shown here]

R. J. Bayardo, W. Bohrer, R. Brice, A. Cichocki, J. Fowler, A. Helal, V. Kashyap, T. Ksiezyk, G. Martin ,M. Nodine ,M. Rashid, M. Rusinkiewicz, R. Shea, C. Unnikrishnan, A. Unruh, D. Woelk. InfoSleuth: Agent-based semantic integration of information in open and dynamic environments. In Proceedings of the ACM SIGMOD international conference on Management of data, Vol. 26, No. 2, June 1997.

....Knowledge representation; Deontic logic; Stratified programs; Agent development environments 1 Introduction Over the last few years, there has been tremendous interest in the area of intelligent software agents. Such agents provide a wide range of services, ranging from data mediation agents [5, 6, 12, 14, 26], to mobile agents [34] to personalized visualization agents [13, 23] to agents that monitor newspapers, prioritize mail buffers and the like [18, 21, 36, 38] Most such existing work on agents subscribes to the view that agents should be autonomous, and that such autonomous agents should ....

Bayardo, R., et al. Infosleuth: Agent-based semantic integration of information in open and dynamic environments. In J. Peckham, editor, Proceedings of ACM SIGMOD Conference on Management of Data, pages 195--206, Tucson, Arizona, 1997.

....was able to take advantage of very efficient caching and query optimization methods [60, 1] but may have not been able to easily express some of the more sophisticated reasoning tasks desired by the authors of SIMS. Other important later directions on mediation include the InfoSleuth effort [13] at MCC. 7 Conclusions and Future Work In this paper, we have argued the following two simple points: 58 (I) Agents in the real world manipulate not just logical formulas, but complex data types, that vary from one application to another. II) Agents must be able to act in accordance with a ....

R. Bayardo et al. Infosleuth: Agent-based Semantic Integration of Information in Open and Dynamic Environments. In ACM SIGMOD Conf. on Management of Data, pages 195--206, Arizona, USA, 1997.

....2 qanning RgelTt 12:02:40.12 lroker Agent 12:02:7.g06 eSitesDR Resource RgelTt 12:02:8. 15 ;orrelatlOn Agent I 12:03:00 078 Iser ger 1 Figure 6: Iscape Processing Monitor 6 Related Work SIMS [AKS96] TSIMMIS [CMH 94] Information Manifold [LRO96] OBSERVER [MIKS00] and InfoSleuth [BBB97] are some of the efforts to integrate information from multiple heterogeneous sources for querying. Most other systems focus on retrieving and integrating data from multiple sources and not on the learning, exploring and understanding aspects. The following are the features of InfoQuilt that ....

R. J. Bayardo Jr., W. Bohrer, R. Brice, et al. InfoSleuth: Agent-Based Semantic Integration of Information in Open and Dynamic Environments. In SIGMOD97, pp. 195-206, Tucson, AZ, USA, May 1997.

.... the performance proved to be rather sluggish, due largely to the choices of platform (Prolog and Java) Further details of the testbed application are available in[7] 6 Related Work Agent based architectures are proving to be an effective approach to developing distributed information systems [2], as they support rich knowledge representations, meta level reasoning about the content of on line resources, and open environments in which resources join or leave a network dynamically [28] KRAFT employs such an agent based architecture to provide the required extensibility and adaptability in ....

....collaborative interactions, albeit with rather limited forms of information exchange. The design of the KRAFT architecture builds upon recent work in agent based distributed information systems. In particular, the roles identified for KRAFT agents are similar to those in the 11 InfoSleuth system [2]; however, while InfoSleuth is primarily concerned with the retrieval of data objects, the focus of KRAFT is on the combination of data and constraints. KRAFT also builds upon the work of the Knowledge Sharing Effort [18] in that some of the facilitation and brokerage methods are employed, along ....

R. Bayardo. InfoSleuth: agent-based semantic integration of information in open and dynamic environments. In Proc. SIGMOD'97, 1997.

....hard to build. I suggest a number of possible solutions to this scalability problem, including construction of a confederation of interconnected information integration systems. 1 Introduction A number of recent systems perform information integration for information sources found on the Web [10, 6, 8, 2, 7, 9, 11, 12]. These systems allow a user to query a database (possibly a virtual one) that combines information from several Web sites. For the past ten months, I have been continuously maintaining two such information integration systems, both based on a database query language called WHIRL [3] Both ....

R. J. Bayardo, W. Bohrer, R. Brice, A. Cichocki, J. Fowler, A. Helal, V. Kashyap, T. Ksiezyk, G. Martin, M. Nodine, M. Rashid, M. Rusinkiewicz, R. Shea, C. Unnikrishan, A. Unruh, and D. Woelk. Infosleuth: an agent-based semantic integration of information in open and dynamic environments. In Proceedings of the 1997.

....services, and fully dynamic binding rebinding between agents. 4. 2 Related Work The design of the KRAFT architecture builds upon recent work in agent based distributed information systems [12] In particular, the roles identified for KRAFT agents are similar to those in the InfoSleuth system [2]; however, while InfoSleuth is primarily concerned with the retrieval of data objects, the focus of KRAFT is on the combination of data and constraints. KRAFT also builds upon the work of the Knowledge Sharing Effort [7] in that some of the facilitation and brokerage methods are employed, along ....

R. Bayardo. InfoSleuth: agent-based semantic integration of information in open and dynamic environments. In Proc. SIGMOD'97, 1997.

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R.J. Bayardo Jr., W. Bohrer, R. Brice, A. Cichocki, J. Fowler, A. Helal, V. Kashyap, T. Ksiezyk, G. Martin, M. Nodine, M. Rashid, M. Rusinkiewicz, R. Shea, C. Unnikrishnan, A. Unruh, and D. Woelk. InfoSleuth: Agent-Based Semantic Integration of Information in Open and Dynamic Environments. ACM SIGMOD Record, 26(2):195--206, June 1997.

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R.J. Bayardo Jr., W. Bohrer, R. Brice, A. Cichocki, J. Fowler, A. Helal, V. Kashyap, T. Ksiezyk, G. Martin, M. Nodine, M. Rashid, M. Rusinkiewicz, R. Shea, C. Unnikrishnan, A. Unruh, and D. Woelk. InfoSleuth: Agent-Based Semantic Integration of Information in Open and Dynamic Environments. ACM SIGMOD Record, 26(2):195--206, June 1997.

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Bayardo, Roberto J., et al. (1997). InfoSleuth: Agent-Based Semantic Integration of Information in Open and Dynamic Environments. In 1997 ACM SIGMOD International Conference on Management of Data (SIGMOD 1997), pages 195--206, Tucson, Arizona, USA. ACM.

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R.J. Bayardo Jr., W. Bohrer, R. Brice, A. Cichocki, J. Fowler, A. Helal, V. Kashyap, T. Ksiezyk, G. Martin, M. Nodine, M. Rashid, M. Rusinkiewicz, R. Shea, C. Unnikrishnan, A. Unruh, and D. Woelk. InfoSleuth: Agent-Based Semantic Integration of Information in Open and Dynamic Environments. ACM SIGMOD Record, 26(2):195--206, June 1997.

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R. Bayardo, W. Bohrer, R. Brice, A. Cichocki, G. Fowler, A. Helal, V. Kashyap, T. Ksiezyk, G. Martin, M. Nodine, M. Rashid, M. Rusinkiewicz, R. Shea, C. Unnikrishnan, A. Unruh, and D. Woelk:. Infosleuth: Agent-based semantic integration of information in open and dynamic environments. In ACM Intl. Conf. on Management of Data (SIGMOD) , 1997.

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R. J. Bayardo, W. Bohrer, et al. (1997) "InfoSleuth: Agent-Based Semantic Integration of Information in Open and Dynamic Environments". In Proceedings of the ACM SIGMOD International Conference on Management of Data, vol. 26, No. 2, June 1997.

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Bayardo, R.J., Jr., Bohrer, W., Brice, R., Cichocki, A., Fowler, J., Helal, A., Kashyap, V., Ksiezyk, T., Martin, G., Nodine, M., Rashid, M., Rusinkiewcz, M., Shea, R., Unnikrishnan, C., Unruh, A., and Woelk, D., "InfoSleuth: agent-based, semantic integration of information in open and dynamic environments," Proc. ACM SIGMOD Conf., 195-206, 1997.

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Roberto Bayardo, et al, "InfoSleuth: agentbased semantic integration of information in open and dynamic environments," in Proc. of ACM SIGMOD, May 1997, Tucson, Arizona, pp. 195-206.

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R. Bayardo et al, InfoSleuth: agent-based semantic integration of information in open and dynamic environments, In Proc. SIGMOD'97, 1997.

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Bayardo, R., W. Bohrer, R. Brice, A. Cichocki, J. Fowler, A. Helal, V. Kashyap, T. Ksiezyk, G. Martin, M. Nodine, M. Rashid, M. Rusinkiewicz, R. Shea, C. Unnikrishnan, A. Unruh, and D. Woelk, 1998. InfoSleuth: Agent-Based Semantic Integration of Information in Open and Dynamic Environments, In Readings in Agents, M. Huhns and M. Singh (Eds.), San Francisco: Morgan Kaufmann, 205-216.

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R. J. Bayardo Jr., W. Bohrer, R. Brice, A. Cichochi, J. Fowler, A. Helal, V. Kashyap, T. Ksiezk, G. Martin, M. Nodine, M. Rashid, M. Rusinkiewicz, R. Shea, C. Unnikrishnan, A. Unruh, and D. woelk. InfoSleuth: Agent-based semantic integration of information in open and dynamic environments. In Proceedings of the ACM SIGMOD International Conference on Management of Data, pages 195--206, 1997.

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