In this post-industrial “information economy” more and more organizations are realizing that havi... more In this post-industrial “information economy” more and more organizations are realizing that having actionable information gives them an invaluable competitive advantage. The term “intellectual asset” has been coined to reflect the significance of this type of information. The field of knowledge management (KM) provides tools, techniques and processes for the most effective use of an organization's intellectual assets [Davies 00]. But the advent of the Web and its subsequent ubiquity has fueled a rapid growth in information volume that has not ...
Submitted to Workshop on Information Integration on the Web, IJCAI, 2009
Identifying data instances, that come from different sources but denote the same entity is necess... more Identifying data instances, that come from different sources but denote the same entity is necessary for effective integration of Semantic Web data. This “instance coreference” identification problem has gained attention in recent years. Although this is a critical aspect of the overall information integration problem in the Semantic Web, we put forward that information integration algorithms also need to be extended in order to work effectively and efficiently in the presence of these coreferenced entities (whether they are ...
In Proc. of Workshop on Evaluation of Ontologies and Ontology-Based Tools, 2007
Abstract. We describe an approach to create a synthetic workload for large scale extensional quer... more Abstract. We describe an approach to create a synthetic workload for large scale extensional query answering experiments. The workload comprises multiple interrelated domain ontologies, data sources which commit to these ontologies, synthetic queries and map ontologies that specify a graph over the domain ontologies. Some of the important parameters of the system are the average number of classes and properties of the source ontology which are mapped with the terms of target ontology and the number of data ...
Workshop on Semantic Web Technology for Mobile and Ubiquitous Applications (ISWC), 2004
Abstract. To be truly pervasive the devices in a ubiquitous computing environment have to be able... more Abstract. To be truly pervasive the devices in a ubiquitous computing environment have to be able to form a “coalition” without human intervention. The Semantic Web provides the infrastructure for discovery and composition of device functionalities. AI planning has been a popular technology for automatic service discovery and composition in the Semantic Web. However, because the Web is so vast and changes so rapidly, a planning agent cannot make a closed-world assumption. This condition makes it difficult for an agent to know ...
In this work we consider the problem of answering queries using distributed Semantic Web data sou... more In this work we consider the problem of answering queries using distributed Semantic Web data sources. We define a mapping language that is a subset of OWL for the purpose of aligning heterogeneous ontologies. In order to answer queries we provide a two step solution. First, given a query we identify potentially relevant sources, which we call the source selection problem. We adapt an information integration algorithm to provide a complete solution to this problem in polynomial time. Second, we load these selected sources into an OWL reasoner, and thereby achieve complete answers to the queries. Since the time to load sources is a dominating factor in performance, and our system identifies the minimal set of potentially relevant sources, it is very efficient. We have conducted an experiment using synthetic ontologies and data sources which demonstrates that our system performs well over a wide range of queries. A typical response time for a given work load of 20 domain ontologies, 2...
The Semantic Web extends the present Web through formal semantics, as specified by ontologies. Th... more The Semantic Web extends the present Web through formal semantics, as specified by ontologies. This formal and unambiguous description of web data allows software agents to exploit web data and provide novel query answering solutions that, in an ideal marriage of knowledge representation and web technologies, could help unlock the true potential of the Web as a highly interconnected global knowledge medium. However, traditionally, work on knowledge representation and ontologies assumed well defined, small and static domains ...
The emergence of semantic web opens up boundless possibilities by enabling software agents to int... more The emergence of semantic web opens up boundless possibilities by enabling software agents to intelligently reason about its content. Over 300 million searches are conducted everyday on the Internet by people trying to find what they need. A majority of these searches are in the domain of consumer e- commerce, where a web user is looking for something to buy . This represents a huge cost in terms of people hours and an enormous drain of resources. Agent enabled semantic search will have a dramatic impact on the precision of these searches. It will reduce and possibly eliminate information asymmetry where a better informed buyer gets the best value. By impacting this key determinant of market prices semantic web will foster the evolution of different business and economic models. We submit that there is a need for developing these futuristic models based on our current understanding of e -commerce models and nascent semantic web technologies. We believe these business models will enc...
The emergence of semantic web opens up boundless possibilities by enabling software agents to int... more The emergence of semantic web opens up boundless possibilities by enabling software agents to intelligently reason about its content. Over 300 million searches are conducted everyday on the Internet by people trying to find what they need. A majority of these searches are in the domain of consumer ecommerce, where a web user is looking for something to buy. This represents a huge cost in terms of people hours and an enormous drain of resources. Agent enabled semantic search will have a dramatic impact on the ...
In this post-industrial “information economy” more and more organizations are realizing that havi... more In this post-industrial “information economy” more and more organizations are realizing that having actionable information gives them an invaluable competitive advantage. The term “intellectual asset” has been coined to reflect the significance of this type of information. The field of knowledge management (KM) provides tools, techniques and processes for the most effective use of an organization's intellectual assets [Davies 00].
ABSTRACT The emergence of semantic web opens up boundless possibilities by enabling software agen... more ABSTRACT The emergence of semantic web opens up boundless possibilities by enabling software agents to intelligently reason about its content. Over 300 million searches are conducted everyday on the Internet by people trying to find what they need. A majority of these searches are in the domain of consumer ecommerce, where a web user is looking for something to buy. This represents a huge cost in terms of people hours and an enormous drain of resources.
Abstract. In this work we consider the problem of answering queries using distributed Semantic We... more Abstract. In this work we consider the problem of answering queries using distributed Semantic Web data sources. We define a mapping language that is a subset of OWL for the purpose of aligning heterogeneous ontologies. In order to answer queries we provide a two step solution. First, given a query we identify potentially relevant sources, which we call the source selection problem. We adapt an information integration algorithm to provide a complete solution to this problem in polynomial time.
Abstract. We describe an approach to create a synthetic workload for large scale extensional quer... more Abstract. We describe an approach to create a synthetic workload for large scale extensional query answering experiments. The workload comprises multiple interrelated domain ontologies, data sources which commit to these ontologies, synthetic queries and map ontologies that specify a graph over the domain ontologies.
Abstract Separate data sources on related domains of knowledge generally contain different but co... more Abstract Separate data sources on related domains of knowledge generally contain different but complementary information. There are queries that can only be answered with pieces of information from some of the separate sources. Thus, it is of considerable interest to enable query answering based on searching the information in an integrated collection of sources. However, independently developed and evolved data sources generally use different schemas to represent their data.
Abstract. To be truly pervasive the devices in a ubiquitous computing environment have to be able... more Abstract. To be truly pervasive the devices in a ubiquitous computing environment have to be able to form a “coalition” without human intervention. The Semantic Web provides the infrastructure for discovery and composition of device functionalities. AI planning has been a popular technology for automatic service discovery and composition in the Semantic Web. However, because the Web is so vast and changes so rapidly, a planning agent cannot make a closed-world assumption.
Abstract Identifying data instances, that come from different sources but denote the same entity ... more Abstract Identifying data instances, that come from different sources but denote the same entity is necessary for effective integration of Semantic Web data. This “instance coreference” identification problem has gained attention in recent years.
Abstract: Software engineering, both as a discipline and as a profession, is at a pivotal point i... more Abstract: Software engineering, both as a discipline and as a profession, is at a pivotal point in its evolution. Although software has become critical in the development of most new human created systems, the concepts, principles, and methods for engineering software are still neither well defined nor uniformly agreed upon.
The emergence of the Semantic Web opens up boundless possibilities by enabling agents to reason a... more The emergence of the Semantic Web opens up boundless possibilities by enabling agents to reason about its content and provide rational responses to unanticipated situations. However [Lassila & McGunniess, accessed 2001] observes that acceptance by the mass (people outside the KR community) is critical to the success of the Semantic Web. Looking back at the Web revolution of the nineties, we see that there were at least two key enablers of its mass acceptance.
In this post-industrial “information economy” more and more organizations are realizing that havi... more In this post-industrial “information economy” more and more organizations are realizing that having actionable information gives them an invaluable competitive advantage. The term “intellectual asset” has been coined to reflect the significance of this type of information. The field of knowledge management (KM) provides tools, techniques and processes for the most effective use of an organization's intellectual assets [Davies 00]. But the advent of the Web and its subsequent ubiquity has fueled a rapid growth in information volume that has not ...
Submitted to Workshop on Information Integration on the Web, IJCAI, 2009
Identifying data instances, that come from different sources but denote the same entity is necess... more Identifying data instances, that come from different sources but denote the same entity is necessary for effective integration of Semantic Web data. This “instance coreference” identification problem has gained attention in recent years. Although this is a critical aspect of the overall information integration problem in the Semantic Web, we put forward that information integration algorithms also need to be extended in order to work effectively and efficiently in the presence of these coreferenced entities (whether they are ...
In Proc. of Workshop on Evaluation of Ontologies and Ontology-Based Tools, 2007
Abstract. We describe an approach to create a synthetic workload for large scale extensional quer... more Abstract. We describe an approach to create a synthetic workload for large scale extensional query answering experiments. The workload comprises multiple interrelated domain ontologies, data sources which commit to these ontologies, synthetic queries and map ontologies that specify a graph over the domain ontologies. Some of the important parameters of the system are the average number of classes and properties of the source ontology which are mapped with the terms of target ontology and the number of data ...
Workshop on Semantic Web Technology for Mobile and Ubiquitous Applications (ISWC), 2004
Abstract. To be truly pervasive the devices in a ubiquitous computing environment have to be able... more Abstract. To be truly pervasive the devices in a ubiquitous computing environment have to be able to form a “coalition” without human intervention. The Semantic Web provides the infrastructure for discovery and composition of device functionalities. AI planning has been a popular technology for automatic service discovery and composition in the Semantic Web. However, because the Web is so vast and changes so rapidly, a planning agent cannot make a closed-world assumption. This condition makes it difficult for an agent to know ...
In this work we consider the problem of answering queries using distributed Semantic Web data sou... more In this work we consider the problem of answering queries using distributed Semantic Web data sources. We define a mapping language that is a subset of OWL for the purpose of aligning heterogeneous ontologies. In order to answer queries we provide a two step solution. First, given a query we identify potentially relevant sources, which we call the source selection problem. We adapt an information integration algorithm to provide a complete solution to this problem in polynomial time. Second, we load these selected sources into an OWL reasoner, and thereby achieve complete answers to the queries. Since the time to load sources is a dominating factor in performance, and our system identifies the minimal set of potentially relevant sources, it is very efficient. We have conducted an experiment using synthetic ontologies and data sources which demonstrates that our system performs well over a wide range of queries. A typical response time for a given work load of 20 domain ontologies, 2...
The Semantic Web extends the present Web through formal semantics, as specified by ontologies. Th... more The Semantic Web extends the present Web through formal semantics, as specified by ontologies. This formal and unambiguous description of web data allows software agents to exploit web data and provide novel query answering solutions that, in an ideal marriage of knowledge representation and web technologies, could help unlock the true potential of the Web as a highly interconnected global knowledge medium. However, traditionally, work on knowledge representation and ontologies assumed well defined, small and static domains ...
The emergence of semantic web opens up boundless possibilities by enabling software agents to int... more The emergence of semantic web opens up boundless possibilities by enabling software agents to intelligently reason about its content. Over 300 million searches are conducted everyday on the Internet by people trying to find what they need. A majority of these searches are in the domain of consumer e- commerce, where a web user is looking for something to buy . This represents a huge cost in terms of people hours and an enormous drain of resources. Agent enabled semantic search will have a dramatic impact on the precision of these searches. It will reduce and possibly eliminate information asymmetry where a better informed buyer gets the best value. By impacting this key determinant of market prices semantic web will foster the evolution of different business and economic models. We submit that there is a need for developing these futuristic models based on our current understanding of e -commerce models and nascent semantic web technologies. We believe these business models will enc...
The emergence of semantic web opens up boundless possibilities by enabling software agents to int... more The emergence of semantic web opens up boundless possibilities by enabling software agents to intelligently reason about its content. Over 300 million searches are conducted everyday on the Internet by people trying to find what they need. A majority of these searches are in the domain of consumer ecommerce, where a web user is looking for something to buy. This represents a huge cost in terms of people hours and an enormous drain of resources. Agent enabled semantic search will have a dramatic impact on the ...
In this post-industrial “information economy” more and more organizations are realizing that havi... more In this post-industrial “information economy” more and more organizations are realizing that having actionable information gives them an invaluable competitive advantage. The term “intellectual asset” has been coined to reflect the significance of this type of information. The field of knowledge management (KM) provides tools, techniques and processes for the most effective use of an organization's intellectual assets [Davies 00].
ABSTRACT The emergence of semantic web opens up boundless possibilities by enabling software agen... more ABSTRACT The emergence of semantic web opens up boundless possibilities by enabling software agents to intelligently reason about its content. Over 300 million searches are conducted everyday on the Internet by people trying to find what they need. A majority of these searches are in the domain of consumer ecommerce, where a web user is looking for something to buy. This represents a huge cost in terms of people hours and an enormous drain of resources.
Abstract. In this work we consider the problem of answering queries using distributed Semantic We... more Abstract. In this work we consider the problem of answering queries using distributed Semantic Web data sources. We define a mapping language that is a subset of OWL for the purpose of aligning heterogeneous ontologies. In order to answer queries we provide a two step solution. First, given a query we identify potentially relevant sources, which we call the source selection problem. We adapt an information integration algorithm to provide a complete solution to this problem in polynomial time.
Abstract. We describe an approach to create a synthetic workload for large scale extensional quer... more Abstract. We describe an approach to create a synthetic workload for large scale extensional query answering experiments. The workload comprises multiple interrelated domain ontologies, data sources which commit to these ontologies, synthetic queries and map ontologies that specify a graph over the domain ontologies.
Abstract Separate data sources on related domains of knowledge generally contain different but co... more Abstract Separate data sources on related domains of knowledge generally contain different but complementary information. There are queries that can only be answered with pieces of information from some of the separate sources. Thus, it is of considerable interest to enable query answering based on searching the information in an integrated collection of sources. However, independently developed and evolved data sources generally use different schemas to represent their data.
Abstract. To be truly pervasive the devices in a ubiquitous computing environment have to be able... more Abstract. To be truly pervasive the devices in a ubiquitous computing environment have to be able to form a “coalition” without human intervention. The Semantic Web provides the infrastructure for discovery and composition of device functionalities. AI planning has been a popular technology for automatic service discovery and composition in the Semantic Web. However, because the Web is so vast and changes so rapidly, a planning agent cannot make a closed-world assumption.
Abstract Identifying data instances, that come from different sources but denote the same entity ... more Abstract Identifying data instances, that come from different sources but denote the same entity is necessary for effective integration of Semantic Web data. This “instance coreference” identification problem has gained attention in recent years.
Abstract: Software engineering, both as a discipline and as a profession, is at a pivotal point i... more Abstract: Software engineering, both as a discipline and as a profession, is at a pivotal point in its evolution. Although software has become critical in the development of most new human created systems, the concepts, principles, and methods for engineering software are still neither well defined nor uniformly agreed upon.
The emergence of the Semantic Web opens up boundless possibilities by enabling agents to reason a... more The emergence of the Semantic Web opens up boundless possibilities by enabling agents to reason about its content and provide rational responses to unanticipated situations. However [Lassila & McGunniess, accessed 2001] observes that acceptance by the mass (people outside the KR community) is critical to the success of the Semantic Web. Looking back at the Web revolution of the nineties, we see that there were at least two key enablers of its mass acceptance.
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Papers by Abir Qasem