gianluca moro scpxwdeisuniboit apologies receive multiple copies email fourth international workshop agents peertopeer computing ap2pc 2005 httpp2pingceuniboit held aamas 2005 international conference autonomous agents multiagent systems utrecht university netherlands 25 july 29 july 2005 call papers peertopeer p2p computing attracted enormous media attention initially spurred popularity file sharing systems napster gnutella morpheus systems like bittorrent edonkey continued sustain attention peers autonomous call firstclass citizens p2p networks emerging new distributed computing paradigm potential harness computing power hosts composing network make underutilized resources available others new techniques distributed hashtables dhts semantic routing plaxton meshes combined traditional concepts hypercubes trust metrics caching techniques pool together untapped computing power edges internet new techniques possibilities generated lot interest many industrial organizations recently resulted creation p2p working group undertaking standardization activities area httpwwwirtforgchartersp2prghtml p2p computing peers services organise dynamically without central coordination order foster knowledge sharing collaboration cooperative noncooperative environments success p2p systems strongly depends number factors first ability ensure equitable distribution content services economic business models rely incentive mechanisms supply contributions system developed along methods controlling free riding issue second ability enforce provision trusted services reputation based p2p trust management models becoming focus research community viable solution trust models must balance constraints imposed environment eg scalability unique properties trust social psychological phenomenon recently also witnessing move p2p paradigm embrace mobile computing attempt achieve even higher ubiquitousness possibility services related physical location relation agents physical proximity could introduce new opportunities also new technical challenges although researchers working distributed computing multiagent systems databases networks using similar concepts long time fairly recently papers motivated current p2p paradigm started appearing high quality conferences workshops research agent systems particular appears relevant since inception multiagent systems always thought networks peers multiagent paradigm thus superimposed p2p architecture agents embody description task environments decisionsupport capabilities collective behavior interaction protocols peer emphasis context decentralization user autonomy ease speed growth gives p2p advantages also leads significant potential problems prominent among problems coordination ability agent make decisions actions context activities agents scalability value p2p systems lies well scale along several dimensions including complexity heterogeneity peers robustness traffic redistribution important scale coordination strategies along multiple dimensions enhance tractability viability thereby widen application domains two problems common many largescale applications without coordination agents may wasting efforts squander resources fail achieve objectives situations requiring collective effort workshop bring together researchers working agent systems p2p computing intention strengthening connection researchers related areas distributed systems networks database systems also welcome opinion lot contribute seek highquality original contributions general theme agents p2p computing following nonexhaustive list topics special interest intelligent agent techniques p2p computing p2p computing techniques multiagent systems semantic web semantic coordination mechanisms p2p systems scalability coordination robustness adaptability p2p systems selforganization emergent behavior p2p networks ecommerce p2p computing participation contract incentive mechanisms p2p systems computational models trust reputation community interest building regulation behavioral norms intellectual property rights p2p systems p2p architectures scalable data structures p2p systems services p2p systems service definition languages service discovery filtering composition etc knowledge discovery p2p data mining agents p2p oriented information systems information ecosystems p2p systems security issues p2p networks pervasive computing based p2p architectures adhoc networkswireless communication devices mobile systems grid computing solutions based agents p2p paradigms legal issues p2p networks panel theme panel decentralised trust p2p multiagent systems p2p multiagent systems become larger diverse risks interacting malicious peers become increasingly problematic panel address computational trust issues addressed p2p multiagent systems panel involve short presentations thepanelists followed discussion session involving audience important dates paper submission 14th march 2005 acceptance notification 18th april 2005 workshop 2526th july 2005 camera ready postproceedings 17th august 2005 registration accomodation workshop registration handled aamas 2005 organization along main conference registration submission instructions previously unpublished papers formatted according lncslnai author instructions proceedings longer 12 pages 5000 words including figures tables references etc web submission interface provided shortly httpp2pingceuniboit encourage authors read abstracts papers submitted previous workshops httpp2pingceuniboit2002 httpwwwspringeronlinecomsgwcdafrontpage011855540109222991818000html httpp2pingceuniboit2003 httpwwwspringeronlinecomsgwcdafrontpage0118555401092237060961000html httpp2pingceuniboit2004 particular preference given novel approaches papers build upon contributions papers presented previous ap2pc workshops publication accepted papers distributed workshop participants workshop notes previous years postproceedings revised papers namely accepted papers presented workshop submitted publication springer lecture notes computer science series organizing committee program cochairs zoran despotovic school computer communication sciences ecole polytechnique federale de lausanne epfl ch1015 lausanne switzerland email vgzavoubdngfwsqepflch sam joseph main contact dept information computer science university hawaii manoa usa 1680 eastwest road post 309 honolulu hi 96822 email chczawsdhawaiiedu claudio sartori dept electronics computer science systems university bologna italy viale risorgimento 2 40136 bologna italy email cmdpehyqtnhniauniboit panel chair munindar p singh dept computer science north carolina state university usa email tzrmwneeosncsuedu program committee karl aberer epfl lausanne switzerland alessandro agostini itcirst trento italy sonia bergamaschi university modena reggioemilia italy brian blake georgetown university usa rajkumar buyya university melbourne australia ooi beng chin national university singapore singapore paolo ciancarini university bologna italy costas courcoubetis athens university economics business greece yogesh deshpande university western sydney australia asuman dogac middle east technical university turkey boi v faltings epfl lausanne switzerland maria gini university minnesota usa dina q goldin university connecticut usa chihab hanachi university toulouse france mark klein massachusetts institute technology usa matthias klusch dfki saarbrucken germany tan kian lee national university singapore singapore zakaria maamar zayed university uae dejan milojicic hewlett packard labs usa alberto montresor university bologna italy luc moreau university southampton uk jeanhenry morin university geneve switzerland john mylopoulos university toronto canada andrea omicini university bologna italy maria orlowska university queensland australia aris ouksel university illinois chicago usa mike papazoglou tilburg university netherlands paolo petta austrian research institute ai austria jeremy pitt imperial college uk dimitris plexousakis institute computer science forth greece martin purvis university otago new zealand omer f rana cardiff university uk douglas reeves north carolina state university usa thomas risse fraunhofer ipsi darmstadt germany pierangela samarati university milan italy christophe silbertinblanc university toulouse france maarten van steen vrije universiteit netherlands katia sycara robotics institute carnegie mellon university usa peter triantafillou technical university crete greece anand tripathi university minnesota usa vijay k vaishnavi georgia state university usa francisco valverdealbacete universidad carlos iii de madrid spain maurizio vincini university modena reggioemilia italy fang wang btexact technologies uk gerhard weiss technische universitaet germany bin yu north carolina state university usa franco zambonelli university modena reggioemilia italy research associate university bologna italy ph computer science engineering dipartimento di elettronica informatica e sistemistica via venezia 52 i47023 cesena fc tel 39 0547 339 237 fax 39 0547 339 208 email scpxwdeisuniboit wed 06 aug 2008 013526 0100 uai ap2pc 2005 call papers fourth international workshop agents peertopeer computing