The papers in this volume were presented at the workshop “Innovative Internet Community Systems 2003” held on June 19–21, 2003 in Leipzig. IICS 2003 was the thirdworkshopintheIICSseries.Thepurposeofthese workshopsisto bring together researchers in the area of system and information management for the Next Generation Internet (NGI). Like the preceding two workshops, IICS 2001 and IICS 2002, this year’s workshop was organized by the Gesellschaft fur ¨ Informatik (GI) in Germany to support the exchange of experiences, results and technology in the area of focus. The 21 papers (2 invited, 19 other contributions) presented at the conference and in the present volume were selected from more than 30 submissions. Every submission was fully reviewed by 3 members of the program committee. We wish to thank all those who made the meeting possible: the authors for submitting papers, the members of the program committee for their excellent work, and the two invited speakers. We wish to express our sincere apprec- tion to Regine Gabler (University of Leipzig) and Barbara Hamann (Technical University, Ilmenau) for their great e?orts and perfect work concerning the - ministrative details associated with the workshop and the preparation of this volume. Finally, we wish to acknowledge the substantial help provided by our sponsors: the University of Leipzig, the Technical University, Ilmenau, and the TKK (Techniker Krankenkasse) Leipzig. August 2003 Thomas B¨ ohme Gerhard Heyer Herwig Unger VI Organization Organization IICS 2003 was organized by the Gesellschaft fur ¨ Informatik (GI) in Germany.

IICS2004,thefourthworkshoponInnovativeInternetCommunitySystems,s- cessfully dealtwith severaltimely topicsofdistributed systems,the Internetand virtualcommunities.TheworkshopseriescommencedwithIICS2001heldatthe Technical University of Ilmenau. After two more workshops, in Kuhlung .. sborn and Leipzig, this year was the ?rst time that the workshop was held abroad (Guadalajara, Mexico). Due to a broader international environment, the wo- shop this year was organized by the IEEE in cooperation with the Universidad de Guadalajara. Thepapersfromtheconferenceweremainlyfocusedonthreeaspects:syst- orientedproblems,textprocessing,andtheoreticalfoundationofdistributedand Internet systems. The organizers tried to cover the main issues appearing today with the steady growth of the Internet and the Internet communities. Con- quently, the speed and quality-of-service problems of today's Internet protocols, aspects of cooperation and collaboration in Internet systems, as well as age- and textprocessing-based methods used to compute the large amounts of inf- mation in the Internet more or less automatically were all emphasized in most papers and discussions during the conference.Thereweretwomini-workshopsintheworkshopbecausesometopicsmay- ?uence communities and the Internet, and the other way around. Armin Mikler from the University of North Texas at Denton organized the workshop on Computational Epidemiology, considering several aspects of this brand new research area which requires fast exchanges of information from large areas. Helena Unger organized a mini-workshop on the Optimization of Urban Tra?c Systems (OUTS), showing the strong connection between social communities and technical systems, and many requirements to use distributed systems and the Net to collect and process current information in the right manner.

This volume of Lecture Notes in Computer Science contains all accepted papers th of the 5 International Conference on Innovative Internet Community Systems 2 (I CS), which was held at the Sorbonne in Paris, from June 20–22, 2005. The previous four conferences in Ilmenau, Rostock, Leipzig (Germany) and Guadalajara (Mexico) developed the pro?le of this event. Traditionally, there are topics discussed in three main aspects. All of them must be considered in a united manner in order to investigate and understand the emergence and evolution of communities in the Internet: knowledge about networking, content and text processing as well as theory. The goal of the I2CS workshop is to bring researchers from both industry and academic ?elds together to discuss current progressandfuturedevelopmentsintheseareasandtoeliminatethegapbetween theory and application. At this point, we want to express immense gratitude to all the authors of the submitted papers and to the members of the international Program Committee for their contribution to the success of the event and a program of high quality. In a peer-to-peer review process, 17 papers were selected out of 27 submissions.

Nowadays, the Internet is the most commonly used medium for the exchange of data in di?erent forms. Presently, over 60 million machines have access to the Internet and to its resources. However, the Internet is also the largest distributed system o?ering di?erent computational services and possibilities not only for cluster computing. If the needs of modern mobile computing and multimedia systems are taken into account, it becomes clear that modern methods must ensure an e?ective development and management of the Internet allowing each user fast access to this huge resource space. The Innovative Internet Computing Systems workshop is organized by the Gesellschaft fur ¨ Informatik(GI) in Germany. It intends to be an open me- ing point for scientists dealing with di?erent aspects of this complex topic. In contrast to the Distributed Communities on the Web workshops, which can be 2 considered as the roots of I CS, special attention is given to fundamental - search works and the application of theoretical and formal results in practical implementations.

2 I CS2002wasthesecondworkshoponInnovativeInternetComputingSystems, a series of international workshops on system and information management for 2 theNextGenerationInternet(NGI).TheworkshopseriescommencedwithI CS 2001, which was held at the Technical University of Ilmenau. It brought - gether scientists whose research addressed di?erent aspects of Internet-based and network-centric computing. This year's workshop was held in the inspiring atmosphereoftheoldBalticSearesortofKuhlung .. bornnearRostock(Germany). Theunprecedentedpervasivenessofnetworkaccessandtheassociatedem- gence of large distributed computing infrastructures have presented researchers with new challenges in Information and Web technology. The management and retrieval of web-based information, the classi?cation of contents, and the m- agementofweb-basedcommunitiesaresomeofthekeyareasaddressedbysome of this year's contributions. Other papers focus on the structure and retrieval ofinformationfrom largedistributed data basesaswell asthe representationof the distributed natureofinformationbythe meansofgraph-theoreticalmodels. 2 Like I CS 2001, this year's workshop was organized by the Gesellschaft fur ..Informatik(GI)inGermanytosupporttheexchangeofexperiences,results, and technology in the ?eld. The 21 papers (2 invited, 19 regular contributions) presented at the conference and in the present volume were selected from more than30submissions.Everysubmissionwascarefullyreviewedbythreemembers of the programcommittee. Wewouldliketothankallthosewhocontributedtothisbookfortheirexc- lent work and their great cooperation. Roswitha Fengler and Katrin Erdmann deserve special gratitude for their great e?orts and perfect work concerning all administrativemattersoftheworkshop.Wewishtoacknowledgethesubstantial helpprovidedbyoursponsors:theUniversityofRostockandtheTKKTechniker KrankenkasseRostock. We hope all participants enjoyed a successful workshop, made a lot of new contacts,held fruitful discussions helping to solvethe actualresearchproblems, and had a pleasant stay on the coast of the Baltic Sea. Last but not least we 2 hope to see you again at the third I CS conference in 2003, which will be held in the Leipzig area in the heart of Germany.

The papers in this volume were presented at the workshop “Innovative Internet Community Systems 2003” held on June 19–21, 2003 in Leipzig. IICS 2003 was the thirdworkshopintheIICSseries.Thepurposeofthese workshopsisto bring together researchers in the area of system and information management for the Next Generation Internet (NGI). Like the preceding two workshops, IICS 2001 and IICS 2002, this year’s workshop was organized by the Gesellschaft fur ¨ Informatik (GI) in Germany to support the exchange of experiences, results and technology in the area of focus. The 21 papers (2 invited, 19 other contributions) presented at the conference and in the present volume were selected from more than 30 submissions. Every submission was fully reviewed by 3 members of the program committee. We wish to thank all those who made the meeting possible: the authors for submitting papers, the members of the program committee for their excellent work, and the two invited speakers. We wish to express our sincere apprec- tion to Regine Gabler (University of Leipzig) and Barbara Hamann (Technical University, Ilmenau) for their great e?orts and perfect work concerning the - ministrative details associated with the workshop and the preparation of this volume. Finally, we wish to acknowledge the substantial help provided by our sponsors: the University of Leipzig, the Technical University, Ilmenau, and the TKK (Techniker Krankenkasse) Leipzig. August 2003 Thomas B¨ ohme Gerhard Heyer Herwig Unger VI Organization Organization IICS 2003 was organized by the Gesellschaft fur ¨ Informatik (GI) in Germany.

IICS2004,thefourthworkshoponInnovativeInternetCommunitySystems,s- cessfully dealtwith severaltimely topicsofdistributed systems,the Internetand virtualcommunities.TheworkshopseriescommencedwithIICS2001heldatthe Technical University of Ilmenau. After two more workshops, in Kuhlung .. sborn and Leipzig, this year was the ?rst time that the workshop was held abroad (Guadalajara, Mexico). Due to a broader international environment, the wo- shop this year was organized by the IEEE in cooperation with the Universidad de Guadalajara. Thepapersfromtheconferenceweremainlyfocusedonthreeaspects:syst- orientedproblems,textprocessing,andtheoreticalfoundationofdistributedand Internet systems. The organizers tried to cover the main issues appearing today with the steady growth of the Internet and the Internet communities. Con- quently, the speed and quality-of-service problems of today's Internet protocols, aspects of cooperation and collaboration in Internet systems, as well as age- and textprocessing-based methods used to compute the large amounts of inf- mation in the Internet more or less automatically were all emphasized in most papers and discussions during the conference.Thereweretwomini-workshopsintheworkshopbecausesometopicsmay- ?uence communities and the Internet, and the other way around. Armin Mikler from the University of North Texas at Denton organized the workshop on Computational Epidemiology, considering several aspects of this brand new research area which requires fast exchanges of information from large areas. Helena Unger organized a mini-workshop on the Optimization of Urban Tra?c Systems (OUTS), showing the strong connection between social communities and technical systems, and many requirements to use distributed systems and the Net to collect and process current information in the right manner.

This volume of Lecture Notes in Computer Science contains all accepted papers th of the 5 International Conference on Innovative Internet Community Systems 2 (I CS), which was held at the Sorbonne in Paris, from June 20–22, 2005. The previous four conferences in Ilmenau, Rostock, Leipzig (Germany) and Guadalajara (Mexico) developed the pro?le of this event. Traditionally, there are topics discussed in three main aspects. All of them must be considered in a united manner in order to investigate and understand the emergence and evolution of communities in the Internet: knowledge about networking, content and text processing as well as theory. The goal of the I2CS workshop is to bring researchers from both industry and academic ?elds together to discuss current progressandfuturedevelopmentsintheseareasandtoeliminatethegapbetween theory and application. At this point, we want to express immense gratitude to all the authors of the submitted papers and to the members of the international Program Committee for their contribution to the success of the event and a program of high quality. In a peer-to-peer review process, 17 papers were selected out of 27 submissions.

Nowadays, the Internet is the most commonly used medium for the exchange of data in di?erent forms. Presently, over 60 million machines have access to the Internet and to its resources. However, the Internet is also the largest distributed system o?ering di?erent computational services and possibilities not only for cluster computing. If the needs of modern mobile computing and multimedia systems are taken into account, it becomes clear that modern methods must ensure an e?ective development and management of the Internet allowing each user fast access to this huge resource space. The Innovative Internet Computing Systems workshop is organized by the Gesellschaft fur ¨ Informatik(GI) in Germany. It intends to be an open me- ing point for scientists dealing with di?erent aspects of this complex topic. In contrast to the Distributed Communities on the Web workshops, which can be 2 considered as the roots of I CS, special attention is given to fundamental - search works and the application of theoretical and formal results in practical implementations.

2 I CS2002wasthesecondworkshoponInnovativeInternetComputingSystems, a series of international workshops on system and information management for 2 theNextGenerationInternet(NGI).TheworkshopseriescommencedwithI CS 2001, which was held at the Technical University of Ilmenau. It brought - gether scientists whose research addressed di?erent aspects of Internet-based and network-centric computing. This year's workshop was held in the inspiring atmosphereoftheoldBalticSearesortofKuhlung .. bornnearRostock(Germany). Theunprecedentedpervasivenessofnetworkaccessandtheassociatedem- gence of large distributed computing infrastructures have presented researchers with new challenges in Information and Web technology. The management and retrieval of web-based information, the classi?cation of contents, and the m- agementofweb-basedcommunitiesaresomeofthekeyareasaddressedbysome of this year's contributions. Other papers focus on the structure and retrieval ofinformationfrom largedistributed data basesaswell asthe representationof the distributed natureofinformationbythe meansofgraph-theoreticalmodels. 2 Like I CS 2001, this year's workshop was organized by the Gesellschaft fur ..Informatik(GI)inGermanytosupporttheexchangeofexperiences,results, and technology in the ?eld. The 21 papers (2 invited, 19 regular contributions) presented at the conference and in the present volume were selected from more than30submissions.Everysubmissionwascarefullyreviewedbythreemembers of the programcommittee. Wewouldliketothankallthosewhocontributedtothisbookfortheirexc- lent work and their great cooperation. Roswitha Fengler and Katrin Erdmann deserve special gratitude for their great e?orts and perfect work concerning all administrativemattersoftheworkshop.Wewishtoacknowledgethesubstantial helpprovidedbyoursponsors:theUniversityofRostockandtheTKKTechniker KrankenkasseRostock. We hope all participants enjoyed a successful workshop, made a lot of new contacts,held fruitful discussions helping to solvethe actualresearchproblems, and had a pleasant stay on the coast of the Baltic Sea. Last but not least we 2 hope to see you again at the third I CS conference in 2003, which will be held in the Leipzig area in the heart of Germany.