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GrouPeer: Dynamic clustering of P2P databases

Verena Kantere, Dimitrios Tsoumakos, Timos Sellis, Nick Roussopoulos
<span title="">2009</span> <i title="Elsevier BV"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/epn2gc3fozcsphiz3xnhmwom7u" style="color: black;">Information Systems</a> </i> &nbsp;
In this paper we present GrouPeer, an adaptive, automated approach to both issues in the context of unstructured P2P database overlays.  ...  Sharing structured data in a P2P network is a challenging problem, especially in the absence of a mediated schema.  ...  Our Proposal: GrouPeer The above example points out one of the major problems in unstructured P2P database systems: peers may not be able to obtain requested information or learn about peers with similar  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.is.2008.04.002">doi:10.1016/j.is.2008.04.002</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/shysdri3fraexnwtbfs6746cna">fatcat:shysdri3fraexnwtbfs6746cna</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170705113402/http://www.cslab.ece.ntua.gr/~dtsouma/index_files/groupeer_ISsubmission.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/d1/f3/d1f311189266ecc5eec42b1e9f18407f88470b07.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.is.2008.04.002"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> elsevier.com </button> </a>

QUERY ROUTING AND PROCESSING IN PEER-TOPEER DATA SHARING SYSTEMS

Raddad Al King, Abdelkader Hameurlain, Franck Morvan
<span title="2010-05-28">2010</span> <i title="Academy and Industry Research Collaboration Center (AIRCC)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/dh256fzd25e4rj4t2ex6em7nti" style="color: black;">International Journal of Database Management Systems</a> </i> &nbsp;
These works have led to the emergence of P2P data sharing systems that represent a new generation of P2P systems and, on the other hand, a next stage in a long period of the database research area. ?  ...  The characteristics of P2P systems (e.g. large-scale, node autonomy and instability) make impractical to have a global catalog that represents often an essential component in traditional database systems  ...  GrouPeer [35] is unstructured P2P system that allows sharing relational data by using semantic overlay clusters.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5121/ijdms.2010.2208">doi:10.5121/ijdms.2010.2208</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/krtfuxtqdralxcxnfceyyqjsn4">fatcat:krtfuxtqdralxcxnfceyyqjsn4</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20180602150349/http://www.airccse.org/journal/ijdms/papers/0510ijdms08.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/6d/34/6d34f196cf1b9d86121e1cbce629be3667a354eb.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5121/ijdms.2010.2208"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> Publisher / doi.org </button> </a>

A framework for semantic grouping in P2P databases

Verena Kantere, Dimitrios Tsoumakos, Timos Sellis
<span title="">2008</span> <i title="Elsevier BV"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/epn2gc3fozcsphiz3xnhmwom7u" style="color: black;">Information Systems</a> </i> &nbsp;
In this work, we propose a scheme that automates the process of creating schema synopses from semantic clusters of peers which own autonomous relational databases.  ...  Sharing of structured data in decentralized environments is a challenging problem, especially in the absence of a global schema.  ...  The project is cofinanced 75% of public expenditure through EC -European Social Fund, 25% of public expenditure through Ministry of Development -General Secretariat of Research and Technology and through  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.is.2008.01.011">doi:10.1016/j.is.2008.01.011</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/3ie5el7auzd5rivn6i4or5hguq">fatcat:3ie5el7auzd5rivn6i4or5hguq</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170705112840/http://www.cslab.ece.ntua.gr/%7Edtsouma/index_files/groupeergrouping_ISSpecialIssue.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/3c/34/3c349debfd37165f6b1e2965a8105cc7ea849a48.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.is.2008.01.011"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> elsevier.com </button> </a>

An adaptive online system for efficient processing of hierarchical data

Athanasia Asiki, Dimitrios Tsoumakos, Nectarios Koziris
<span title="">2009</span> <i title="ACM Press"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/5c4wsoaagrh73mwzl3naxxgc3e" style="color: black;">Proceedings of the 18th ACM international symposium on High performance distributed computing - HPDC &#39;09</a> </i> &nbsp;
In our method, peers individually decide on the level of indexing according to the granularity of the incoming queries.  ...  Concept hierarchies greatly help in the organization and reuse of information and are widely used in a variety of information systems applications.  ...  RELATED WORK There has been significant work in the area of databases over P2P networks.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1145/1551609.1551627">doi:10.1145/1551609.1551627</a> <a target="_blank" rel="external noopener" href="https://dblp.org/rec/conf/hpdc/AsikiTK09.html">dblp:conf/hpdc/AsikiTK09</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/kao5t4qc45gwllfmhnrauxlnti">fatcat:kao5t4qc45gwllfmhnrauxlnti</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170808065002/http://www.cslab.ece.ntua.gr/~dtsouma/index_files/hpdc151_asiki8.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/67/39/6739dcd95a1aa95488906dd2a799a0a9f803a1e4.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1145/1551609.1551627"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> acm.org </button> </a>

HiPPIS

Katerina Doka, Dimitrios Tsoumakos, Nectarios Koziris
<span title="">2008</span> <i title="ACM Press"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/qs7va5zauzbk5g5bngeon7yfoy" style="color: black;">Proceeding of the 10th ACM workshop on Web information and data management - WIDM &#39;08</a> </i> &nbsp;
Our scheme utilizes an adaptive algorithm that automatically adjusts the level of indexing according to the granularity of the incoming queries, without assuming any prior knowledge of the workload.  ...  Extensive experimental evaluations show that, on top of the advantages that a distributed storage offers, our method answers the large majority of incoming queries, both point and aggregate ones, without  ...  of the GREED project (EHG-89).  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1145/1458502.1458513">doi:10.1145/1458502.1458513</a> <a target="_blank" rel="external noopener" href="https://dblp.org/rec/conf/widm/DokaTK08.html">dblp:conf/widm/DokaTK08</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/yntjzpz7jjfmvp3uvpkuj4gltm">fatcat:yntjzpz7jjfmvp3uvpkuj4gltm</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20090116005133/http://www.dsclab.ece.ntua.gr/~nkoziris/papers/widm08-doka.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/e0/91/e091eb27741f45807e06ecd3109b17c4022de22c.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1145/1458502.1458513"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> acm.org </button> </a>

Semantic Grouping of Social Networks in P2P Database Settings [chapter]

Verena Kantere, Dimitrios Tsoumakos, Timos Sellis
<i title="Springer Berlin Heidelberg"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/2w3awgokqne6te4nvlofavy5a4" style="color: black;">Lecture Notes in Computer Science</a> </i> &nbsp;
In this work, we propose a scheme that automates the process of creating schema synopses from semantic clusters of peers which own autonomous relational databases.  ...  As our experimental evaluations show, this method increases both the quality and the quantity of the retrieved answers and allows for faster discovery of semantic groups by joining peers.  ...  The clustering is performed using the GrouPeer system [12] .  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-540-74469-6_67">doi:10.1007/978-3-540-74469-6_67</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/jwj2h7dbqffw3kkyflk6ce6z5m">fatcat:jwj2h7dbqffw3kkyflk6ce6z5m</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170705113329/http://www.cslab.ece.ntua.gr/~dtsouma/index_files/dexa07.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/14/c6/14c68abcbbd9bb407d9aabe28c11d08cba9d7a81.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-540-74469-6_67"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

Distributing and searching concept hierarchies: an adaptive DHT-based system

Athanasia Asiki, Dimitrios Tsoumakos, Nectarios Koziris
<span title="2010-04-08">2010</span> <i title="Springer Nature"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/cwtjzb7mrjft5adayc4gnqasai" style="color: black;">Cluster Computing</a> </i> &nbsp;
In our method, peers individually decide on the level of indexing according to the granularity of the incoming queries.  ...  Concept hierarchies greatly help in the organization and reuse of information and are widely used in a variety of information systems applications.  ...  Acknowledgements We would like to thank the administration team of the CESGA EGEE Accounting Portal [1] , who kindly provided us real data regarding the usage of their portal.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/s10586-010-0136-5">doi:10.1007/s10586-010-0136-5</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/5iqz6lak7bdk5fmjuvnmj4hoye">fatcat:5iqz6lak7bdk5fmjuvnmj4hoye</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170809085841/http://www.cslab.ece.ntua.gr/~dtsouma/index_files/cluster_nasia.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/ba/51/ba515af657649711760e0f5512097f862655292b.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/s10586-010-0136-5"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

LinkedPeers: A Distributed System for Interlinking Multidimensional Data [chapter]

Athanasia Asiki, Dimitrios Tsoumakos, Nectarios Koziris
<span title="">2011</span> <i title="Springer Berlin Heidelberg"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/2w3awgokqne6te4nvlofavy5a4" style="color: black;">Lecture Notes in Computer Science</a> </i> &nbsp;
To achieve that, LinkedPeers utilizes a conceptual chain of DHT rings that stores data in a hierarchy-preserving manner and is able to adjust both the granularity of indexing and the amount of pre-computation  ...  In this paper we present LinkedPeers, a distributed system designed for efficient distribution and processing of multidimensional hierarchical data over a Peer-to-Peer overlay. he system design aims at  ...  There has been also significant work in the area of databases over P2P networks.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-642-23091-2_47">doi:10.1007/978-3-642-23091-2_47</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/52frpcoixvczhoywml62oykzse">fatcat:52frpcoixvczhoywml62oykzse</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170705112730/http://www.cslab.ntua.gr/%7Edtsouma/index_files/asiki_dexa11.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/d5/db/d5dba2a22e9f06bb83401d3fbc5b4b7130f0000f.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-642-23091-2_47"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

Brown Dwarf: A fully-distributed, fault-tolerant data warehousing system

Katerina Doka, Dimitrios Tsoumakos, Nectarios Koziris
<span title="">2011</span> <i title="Elsevier BV"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/rwjg7tprafhufajayuvxj2q4n4" style="color: black;">Journal of Parallel and Distributed Computing</a> </i> &nbsp;
capabilities of the available network nodes working in parallel.  ...  It also manages to quickly adapt even after sudden bursts in load and remains unaffected with a considerable fraction of frequent node failures.  ...  In GrouPeer [19] , SPJ queries are sent over an unstructured overlay in order to discover peers with similar schemas. Peers are gradually clustered according to their schema similarity.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.jpdc.2011.07.008">doi:10.1016/j.jpdc.2011.07.008</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/szxvdtvcpvfzlfdzk4dx4tdp6a">fatcat:szxvdtvcpvfzlfdzk4dx4tdp6a</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170808181529/http://www.cslab.ece.ntua.gr/~doka/paper/doka_bd_jpdc.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/07/58/075816d7efcc57ba5f2b5184d03f2eb043041dc4.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.jpdc.2011.07.008"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> elsevier.com </button> </a>

Semantic search and composition in unstructured peer-to-peer networks [article]

Xiaoqi Cao, Universität Des Saarlandes, Universität Des Saarlandes
<span title="2015-08-20">2015</span>
This dissertation focuses on several research questions in the area of semantic search and composition in unstructured peer-to-peer (P2P) networks.  ...  SPSC is proved to be sound and a lower bound of its completeness is given. Finally, this thesis presents iRep3D for semantic-index based 3D scene selection in P2P search.  ...  The idea of group has also been applied in the P2P based database field. Built on unstructured P2P networks, the GrouPeer system [179] enables each peer to find "similar peer" via schema matching.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.22028/d291-25422">doi:10.22028/d291-25422</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/5uqnc5y4pndmfnnk2uoy7uzq7u">fatcat:5uqnc5y4pndmfnnk2uoy7uzq7u</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200221161349/https://publikationen.sulb.uni-saarland.de/bitstream/20.500.11880/25478/1/thesis.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/5d/9c/5d9c819a48c67f485138e31046b64292b538b0a1.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.22028/d291-25422"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> Publisher / doi.org </button> </a>

Data Management in Large Scale Distributed Systems for Analytical Processing Applications [article]

Aikaterini G. Doka, National Technological University Of Athens, National Technological University Of Athens, Νεκτάριος Κοζύρης
<span title="2011-06-23">2011</span>
The increasing size of the data collected and generated by industrial and academic information systems has created new sets of demands from data management platforms.  ...  Geographically spanned users, without the use of any proprietary tool, can share information that arrives from distributed locations at a high rate and query it in different levels of granularity.  ...  In GrouPeer [KTSR09] , SPJ queries are sent over an unstructured overlay in order to discover peers with similar schemas. Peers are gradually clustered according to their schema similarity.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.26240/heal.ntua.296">doi:10.26240/heal.ntua.296</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/byq6g2it2jfrdhqs7ndmsatwg4">fatcat:byq6g2it2jfrdhqs7ndmsatwg4</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20220123195615/https://dspace.lib.ntua.gr/xmlui/bitstream/handle/123456789/4598/dokaai_distributedsystems.pdf;jsessionid=C1FC0EC7869D093F25941997DCA3A2A7?sequence=3" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/61/32/61320762958fa8c16389452c906580a686fe1ad3.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.26240/heal.ntua.296"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> Publisher / doi.org </button> </a>