Marek Kowalkiewicz - Academia.edu (original) (raw)

Papers by Marek Kowalkiewicz

E-mail exchanges are pervasive within defense organizations; rarely are they viewed as value- add... more E-mail exchanges are pervasive within defense organizations; rarely are they viewed as value- added by decision makers. Rather, it is a communication necessity that is not integrated with other aspects of decision ,making. It is then imperative that e-mail users be provided ,with higher contextual information relating to e-mails in order ,to improve ,decision making. For example, when sending

Lecture Notes in Computer Science, 2008

R. Meersman and Z. Tari (Eds.): OTM 2008, Part I, LNCS 5331, pp. 82–99, 2008. © Springer-Verlag B... more R. Meersman and Z. Tari (Eds.): OTM 2008, Part I, LNCS 5331, pp. 82–99, 2008. © Springer-Verlag Berlin Heidelberg 2008 ... Process View Derivation and Composition in a Dynamic ... Xiaohui Zhao1, Chengfei Liu1, Wasim Sadiq2, and Marek Kowalkiewicz2

Lecture Notes in Computer Science, 2009

Business process management is tightly coupled with serviceoriented architecture, as business pro... more Business process management is tightly coupled with serviceoriented architecture, as business processes orchestrate services for business collaboration at logical level. Given the complexity of business processes and the variety of users, it is a sought-after feature to show a business process with different views, so as to cater for the diverse interests, authority levels, etc., of users. This paper presents a framework named FlexView to support process abstraction and concretisation. A novel model is proposed to characterise the structural components of a business process and describe the relations between these components. Two algorithms are developed to formally illustrate the realisation of process abstraction and concretisation in compliance with the defined consistency rules. A prototype is also implemented with WS-BPEL to prove the applicability of the approach.

Lecture Notes in Business Information Processing, 2009

Page 1. W. Abramowicz and D. Flejter (Eds.): BIS 2009 Workshop, LNBIP 37, pp. 375–385, 2009. © Sp... more Page 1. W. Abramowicz and D. Flejter (Eds.): BIS 2009 Workshop, LNBIP 37, pp. 375–385, 2009. © Springer-Verlag Berlin Heidelberg 2009 Supporting Service Level Agreement Creation with Past Service Behavior Data André Ludwig1 and Marek Kowalkiewicz2 ...

Australasian Journal of Information Systems, 2003

There is an increasing interest in automating creation of semantic structures, especially topic m... more There is an increasing interest in automating creation of semantic structures, especially topic maps, by taking advantage of existing, structured information resources. This article gives a preview of the most popular method - based on RDF triples, and suggests a way to automate topic map creation from unstructured information sources. The method can be applied in information systems development domain

Grid Services Engineering and Management, 2007

Service compositions enable users to realize their complex needs as a single request. Despite int... more Service compositions enable users to realize their complex needs as a single request. Despite intensive research, especially in the are ao fb usiness processes, we bs ervices and grids, an open and vali dq uestion is still how to manage service compositions in order to satisfy both functional and non-functional requirements as well as adapt to dynamic changes. In this

Multiagent and Grid Systems, 2007

Page 1. Multiagent and Grid Systems – An International Journal 3 (2007) 299–312 299 IOS Press Tow... more Page 1. Multiagent and Grid Systems – An International Journal 3 (2007) 299–312 299 IOS Press Towards adaptive management of QoS-aware service compositions Mariusz Momotkoa,∗ , Michał Gajewskia, André Ludwigb ...

Lecture Notes in Computer Science, 2010

ABSTRACT Process view technology is catching more attentions in modern business process managemen... more ABSTRACT Process view technology is catching more attentions in modern business process management, as it enables the customisation of business process representation. This capability helps improve the privacy protection, authority control, flexible display, etc., in business process modelling. One of approaches to generate process views is to allow users to construct an aggregate on their underlying processes. However, most aggregation approaches stick to a strong assumption that business processes are always well-structured, which is over strict to BPMN. Aiming to build process views for non-well-structured BPMN processes, this paper investigates the characteristics of BPMN structures, tasks, events, gateways, etc., and proposes a formal process view aggregation approach to facilitate BPMN process view creation. A set of consistency rules and construction rules are defined to regulate the aggregation and guarantee the order preservation, structural and behaviour correctness and a novel aggregation technique, called EP-Fragment, is developed to tackle non-well-structured BPMN processes.

Lecture Notes in Computer Science, 2008

ABSTRACT Service Oriented Computing is a potential enabler for popular applications of Named Enti... more ABSTRACT Service Oriented Computing is a potential enabler for popular applications of Named Entity Recognition and Information Extraction. In this demo we show an example of such an application and discuss how Service Oriented Architecture (SOA) makes the application fully flexible and easily extensible. The application brings SOA close to the end-user and gives possibilities hardly possible with other approaches.

Proceedings of the 2009 International Workshop on Location Based Social Networks - LBSN '09, 2009

With the advent of ever more powerful mobile devices over recent years, an increasing wealth of t... more With the advent of ever more powerful mobile devices over recent years, an increasing wealth of technical functionalities has become ready for use at once. These were previously only available in separate specialized devices with limited functionality or non-mobile equipment. In addition, mobile platform providers have taken a more open approach, enabling community-members to develop applications for their platforms and to deliver them as readily consumable services to the public. Both trends combined have led to a significant increase in the number of innovative mobile applications. More recently, leveraging mobile users' geolocation for provision of services has become the focus of a number of organizations active in the field. In this paper we propose a solution that addresses some challenges when creating location based social networks and offering relevant services to participants in these networks. We have applied this solution in a use case with an Australian based transportation service provider.

Business Information Systems, 2008

ABSTRACT In this paper, a new high precision focused word sense disambiguation (WSD) approach is ... more ABSTRACT In this paper, a new high precision focused word sense disambiguation (WSD) approach is proposed, which not only attempts to identify the proper sense for a word but also provides the probabilistic evaluation for the identification confidence at the same time. A novel Instance Knowledge Network (IKN) is built to generate and maintain semantic knowledge at the word, type synonym set and instance levels. Related algorithms based on graph matching are developed to train IKN with probabilistic knowledge and to use IKN for probabilistic word sense disambiguation. Based on the Senseval-3 all-words task, we run extensive experiments to show the performance enhancements in different precision ranges and the rationality of probabilistic based automatic confidence evaluation of disambiguation. We combine our WSD algorithm with five best WSD algorithms in senseval-3 all words tasks. The results show that the combined algorithms all outperform the corresponding algorithms. .

Lecture Notes in Business Information Processing, 2008

Flexibility and adaptability are important aspects of process aware information systems, and ther... more Flexibility and adaptability are important aspects of process aware information systems, and there has been considerable research work done in this area. That work centers around changes of process models during run time and migrating running process instances to mod- ied process models. This paper addresses a dierent aspect of exible process management: It takes into account changes of process

Lecture Notes in Computer Science, 2008

One of the main problems when creating execution-level process models is finding implementations ... more One of the main problems when creating execution-level process models is finding implementations for process activities. Carrying out this activity manually can be time consuming, since it involves searching in large service repositories. We present Maestro for BPMN, a tool that allows to annotate and automatically compose activities within business processes. We explain the main assumptions and algorithms underlying the tool, and we overview what will be demonstrated at ESWC. This work is partly funded by the EU 6th Framework Programme, within Information Society Technologies (IST) under the SUPER project (http://www.ipsuper.org). Thanks also to Alina Dima, Florian Dörr, and Mario Karrenbrock for their coding support and Christian Drumm and Christian Brelage for their advice.

Lecture Notes in Computer Science, 2009

When creating execution-level process models from conceptual to-be process models, challenges are... more When creating execution-level process models from conceptual to-be process models, challenges are to find implementations for process activities and to use these implementations correctly. Carrying out these activities manually can be time consuming, since it involves searching in large service repositories and cycles of testing and re-designing. We present Maestro for BPMN, a tool that allows to annotate and automatically compose activities within business processes, and to verify the consistency of an annotated process.

Semantic Service Provisioning, 2008

Service composition enables the creation of services previously unavailable through the aggregati... more Service composition enables the creation of services previously unavailable through the aggregation of existing services. The result is called a service composition. Ex-posing a service composition as a service, the result is called a composed service. It can be distinguished from atomic ...

Lecture Notes in Computer Science, 2006

Information and content integration are believed to be a possible solution to the problem of info... more Information and content integration are believed to be a possible solution to the problem of information overload in the Internet. The article is an overview of a simple solution for integration of information and content on the Web. Previous approaches to content extraction and integration are discussed, followed by introduction of a novel technology to deal with the problems, based

Proceedings of the 15th international conference on World Wide Web - WWW '06, 2006

We present an empirical evaluation and comparison of two content extraction methods in HTML: abso... more We present an empirical evaluation and comparison of two content extraction methods in HTML: absolute XPath expressions and relative XPath expressions. We argue that the relative XPath expressions, although not widely used, should be used in preference to absolute XPath expressions in extracting content from human-created Web documents. Evaluation of robustness covers four thousand queries executed on several hundred webpages. We show that in referencing parts of real world dynamic HTML documents, relative XPath expressions are on average significantly more robust than absolute XPath ones.

Lecture Notes in Computer Science, 2006

Service compositions enable users to realize their complex needs as a single request. Despite int... more Service compositions enable users to realize their complex needs as a single request. Despite intensive research, especially in the areao fb usiness processes, webs ervices and grids, an open and validq uestion is still how to manage service compositions in order to satisfy both functional and non-functional requirements as well as adapt to dynamic changes. In this paper we describea na pproacht owards adaptive management of QoS-aware service compositions. This approach integrates well known concepts and techniques and proposes various execution strategies based on dynamic selection and negotiation of services, contracting basedo ns ervice level agreements,s ervice enactment withf lexible supportf or exception handling, monitoring of service level objectives, and profiling of execution data.

E-mail exchanges are pervasive within defense organizations; rarely are they viewed as value- add... more E-mail exchanges are pervasive within defense organizations; rarely are they viewed as value- added by decision makers. Rather, it is a communication necessity that is not integrated with other aspects of decision ,making. It is then imperative that e-mail users be provided ,with higher contextual information relating to e-mails in order ,to improve ,decision making. For example, when sending

Lecture Notes in Computer Science, 2008

R. Meersman and Z. Tari (Eds.): OTM 2008, Part I, LNCS 5331, pp. 82–99, 2008. © Springer-Verlag B... more R. Meersman and Z. Tari (Eds.): OTM 2008, Part I, LNCS 5331, pp. 82–99, 2008. © Springer-Verlag Berlin Heidelberg 2008 ... Process View Derivation and Composition in a Dynamic ... Xiaohui Zhao1, Chengfei Liu1, Wasim Sadiq2, and Marek Kowalkiewicz2

Lecture Notes in Computer Science, 2009

Business process management is tightly coupled with serviceoriented architecture, as business pro... more Business process management is tightly coupled with serviceoriented architecture, as business processes orchestrate services for business collaboration at logical level. Given the complexity of business processes and the variety of users, it is a sought-after feature to show a business process with different views, so as to cater for the diverse interests, authority levels, etc., of users. This paper presents a framework named FlexView to support process abstraction and concretisation. A novel model is proposed to characterise the structural components of a business process and describe the relations between these components. Two algorithms are developed to formally illustrate the realisation of process abstraction and concretisation in compliance with the defined consistency rules. A prototype is also implemented with WS-BPEL to prove the applicability of the approach.

Lecture Notes in Business Information Processing, 2009

Page 1. W. Abramowicz and D. Flejter (Eds.): BIS 2009 Workshop, LNBIP 37, pp. 375–385, 2009. © Sp... more Page 1. W. Abramowicz and D. Flejter (Eds.): BIS 2009 Workshop, LNBIP 37, pp. 375–385, 2009. © Springer-Verlag Berlin Heidelberg 2009 Supporting Service Level Agreement Creation with Past Service Behavior Data André Ludwig1 and Marek Kowalkiewicz2 ...

Australasian Journal of Information Systems, 2003

There is an increasing interest in automating creation of semantic structures, especially topic m... more There is an increasing interest in automating creation of semantic structures, especially topic maps, by taking advantage of existing, structured information resources. This article gives a preview of the most popular method - based on RDF triples, and suggests a way to automate topic map creation from unstructured information sources. The method can be applied in information systems development domain

Grid Services Engineering and Management, 2007

Service compositions enable users to realize their complex needs as a single request. Despite int... more Service compositions enable users to realize their complex needs as a single request. Despite intensive research, especially in the are ao fb usiness processes, we bs ervices and grids, an open and vali dq uestion is still how to manage service compositions in order to satisfy both functional and non-functional requirements as well as adapt to dynamic changes. In this

Multiagent and Grid Systems, 2007

Page 1. Multiagent and Grid Systems – An International Journal 3 (2007) 299–312 299 IOS Press Tow... more Page 1. Multiagent and Grid Systems – An International Journal 3 (2007) 299–312 299 IOS Press Towards adaptive management of QoS-aware service compositions Mariusz Momotkoa,∗ , Michał Gajewskia, André Ludwigb ...

Lecture Notes in Computer Science, 2010

ABSTRACT Process view technology is catching more attentions in modern business process managemen... more ABSTRACT Process view technology is catching more attentions in modern business process management, as it enables the customisation of business process representation. This capability helps improve the privacy protection, authority control, flexible display, etc., in business process modelling. One of approaches to generate process views is to allow users to construct an aggregate on their underlying processes. However, most aggregation approaches stick to a strong assumption that business processes are always well-structured, which is over strict to BPMN. Aiming to build process views for non-well-structured BPMN processes, this paper investigates the characteristics of BPMN structures, tasks, events, gateways, etc., and proposes a formal process view aggregation approach to facilitate BPMN process view creation. A set of consistency rules and construction rules are defined to regulate the aggregation and guarantee the order preservation, structural and behaviour correctness and a novel aggregation technique, called EP-Fragment, is developed to tackle non-well-structured BPMN processes.

Lecture Notes in Computer Science, 2008

ABSTRACT Service Oriented Computing is a potential enabler for popular applications of Named Enti... more ABSTRACT Service Oriented Computing is a potential enabler for popular applications of Named Entity Recognition and Information Extraction. In this demo we show an example of such an application and discuss how Service Oriented Architecture (SOA) makes the application fully flexible and easily extensible. The application brings SOA close to the end-user and gives possibilities hardly possible with other approaches.

Proceedings of the 2009 International Workshop on Location Based Social Networks - LBSN '09, 2009

With the advent of ever more powerful mobile devices over recent years, an increasing wealth of t... more With the advent of ever more powerful mobile devices over recent years, an increasing wealth of technical functionalities has become ready for use at once. These were previously only available in separate specialized devices with limited functionality or non-mobile equipment. In addition, mobile platform providers have taken a more open approach, enabling community-members to develop applications for their platforms and to deliver them as readily consumable services to the public. Both trends combined have led to a significant increase in the number of innovative mobile applications. More recently, leveraging mobile users' geolocation for provision of services has become the focus of a number of organizations active in the field. In this paper we propose a solution that addresses some challenges when creating location based social networks and offering relevant services to participants in these networks. We have applied this solution in a use case with an Australian based transportation service provider.

Business Information Systems, 2008

ABSTRACT In this paper, a new high precision focused word sense disambiguation (WSD) approach is ... more ABSTRACT In this paper, a new high precision focused word sense disambiguation (WSD) approach is proposed, which not only attempts to identify the proper sense for a word but also provides the probabilistic evaluation for the identification confidence at the same time. A novel Instance Knowledge Network (IKN) is built to generate and maintain semantic knowledge at the word, type synonym set and instance levels. Related algorithms based on graph matching are developed to train IKN with probabilistic knowledge and to use IKN for probabilistic word sense disambiguation. Based on the Senseval-3 all-words task, we run extensive experiments to show the performance enhancements in different precision ranges and the rationality of probabilistic based automatic confidence evaluation of disambiguation. We combine our WSD algorithm with five best WSD algorithms in senseval-3 all words tasks. The results show that the combined algorithms all outperform the corresponding algorithms. .

Lecture Notes in Business Information Processing, 2008

Flexibility and adaptability are important aspects of process aware information systems, and ther... more Flexibility and adaptability are important aspects of process aware information systems, and there has been considerable research work done in this area. That work centers around changes of process models during run time and migrating running process instances to mod- ied process models. This paper addresses a dierent aspect of exible process management: It takes into account changes of process

Lecture Notes in Computer Science, 2008

One of the main problems when creating execution-level process models is finding implementations ... more One of the main problems when creating execution-level process models is finding implementations for process activities. Carrying out this activity manually can be time consuming, since it involves searching in large service repositories. We present Maestro for BPMN, a tool that allows to annotate and automatically compose activities within business processes. We explain the main assumptions and algorithms underlying the tool, and we overview what will be demonstrated at ESWC. This work is partly funded by the EU 6th Framework Programme, within Information Society Technologies (IST) under the SUPER project (http://www.ipsuper.org). Thanks also to Alina Dima, Florian Dörr, and Mario Karrenbrock for their coding support and Christian Drumm and Christian Brelage for their advice.

Lecture Notes in Computer Science, 2009

When creating execution-level process models from conceptual to-be process models, challenges are... more When creating execution-level process models from conceptual to-be process models, challenges are to find implementations for process activities and to use these implementations correctly. Carrying out these activities manually can be time consuming, since it involves searching in large service repositories and cycles of testing and re-designing. We present Maestro for BPMN, a tool that allows to annotate and automatically compose activities within business processes, and to verify the consistency of an annotated process.

Semantic Service Provisioning, 2008

Service composition enables the creation of services previously unavailable through the aggregati... more Service composition enables the creation of services previously unavailable through the aggregation of existing services. The result is called a service composition. Ex-posing a service composition as a service, the result is called a composed service. It can be distinguished from atomic ...

Lecture Notes in Computer Science, 2006

Information and content integration are believed to be a possible solution to the problem of info... more Information and content integration are believed to be a possible solution to the problem of information overload in the Internet. The article is an overview of a simple solution for integration of information and content on the Web. Previous approaches to content extraction and integration are discussed, followed by introduction of a novel technology to deal with the problems, based

Proceedings of the 15th international conference on World Wide Web - WWW '06, 2006

We present an empirical evaluation and comparison of two content extraction methods in HTML: abso... more We present an empirical evaluation and comparison of two content extraction methods in HTML: absolute XPath expressions and relative XPath expressions. We argue that the relative XPath expressions, although not widely used, should be used in preference to absolute XPath expressions in extracting content from human-created Web documents. Evaluation of robustness covers four thousand queries executed on several hundred webpages. We show that in referencing parts of real world dynamic HTML documents, relative XPath expressions are on average significantly more robust than absolute XPath ones.

Lecture Notes in Computer Science, 2006

Service compositions enable users to realize their complex needs as a single request. Despite int... more Service compositions enable users to realize their complex needs as a single request. Despite intensive research, especially in the areao fb usiness processes, webs ervices and grids, an open and validq uestion is still how to manage service compositions in order to satisfy both functional and non-functional requirements as well as adapt to dynamic changes. In this paper we describea na pproacht owards adaptive management of QoS-aware service compositions. This approach integrates well known concepts and techniques and proposes various execution strategies based on dynamic selection and negotiation of services, contracting basedo ns ervice level agreements,s ervice enactment withf lexible supportf or exception handling, monitoring of service level objectives, and profiling of execution data.