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<BOOKS>
<BOOK>
	<ID>1</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Kjetil N&#248;rv&#229;g, Yannis Kotidis</AUTHORS>
	<TITLE>Peer-to-Peer Query Processing over Multidimensional Data</TITLE>
	<VENUE>Springer</VENUE>
	<PAGES></PAGES>
	<DATE>2012</DATE>
	<YEAR>2012</YEAR>
	<PAPER></PAPER>	
	<CITATIONS></CITATIONS>
	<NEW>yes</NEW>
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<BOOKCHAPTER>
	<ID>2</ID>
	<AUTHORS>Christos Doulkeridis, Akrivi Vlachou, Kjetil N&#248;rv&#229;g, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Distributed Semantic Overlay Networks</TITLE>
	<VENUE>X.Shen et al. (Eds.), Handbook of Peer-to-Peer Networking, Springer, ISBN: 978-0-387-09750-3</VENUE>
	<PAGES>463-494</PAGES>
	<DATE>January 2010</DATE>
	<YEAR>2010</YEAR>
	<PAPER>./papers/bcsons10.pdf</PAPER>	
	<CITATIONS></CITATIONS>
	<NEW></NEW>
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<BOOKCHAPTER>
	<ID>1</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Dimitris Mavroeidis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Designing a Peer-to-Peer Architecture for Distributed Image Retrieval</TITLE>
	<VENUE>Boujemaa Nozha, Detyniecki Marcin, Nuernberger Andreas (Eds.), Adaptive Multimedia Retrieval: Retrieval, User, and Semantics, Revised Selected Papers, Lecture Notes in Computer Science, Springer, Vol. 4918, ISBN: 978-3-540-79859-0</VENUE>
	<PAGES>182-195</PAGES>
	<DATE>2008</DATE>
	<YEAR>2008</YEAR>
	<PAPER></PAPER>	
	<CITATIONS></CITATIONS>
	<NEW></NEW>
</BOOKCHAPTER>
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<JOURNALS>
<JOURNAL>
	<ID>13</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis and Kjetil N&#248;rv&#229;g</AUTHORS>
	<TITLE>Distributed Top-k Query Processing by Exploiting Skyline Summaries</TITLE>
	<JOURNAL>Distributed and Parallel Databases (special issue on Ranking in Databases)</JOURNAL>
	<VOL></VOL>
	<ISSUE></ISSUE>
	<PAGES></PAGES>
	<DATE>December 2012</DATE>
	<YEAR>2012</YEAR>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<NEW>yes</NEW>
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<JOURNAL>
	<ID>12</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis and Yannis Kotidis</AUTHORS>
	<TITLE>Metric-based Similarity Search in Unstructured Peer-to-Peer Systems</TITLE>
	<JOURNAL>Transactions on Large-Scale Data- and Knowledge-Centered Systems, Springer</JOURNAL>
	<VOL>5</VOL>
	<ISSUE></ISSUE>
	<PAGES>28-48</PAGES>
	<DATE>2012</DATE>
	<YEAR>2012</YEAR>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<NEW>yes</NEW>
</JOURNAL>	
<JOURNAL>
	<ID>11</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Yannis Kotidis and Kjetil N&#248;rv&#229;g</AUTHORS>
	<TITLE>Monochromatic and Bichromatic Reverse Top-k Queries</TITLE>
	<JOURNAL>IEEE Transactions on Knowledge and Data Engineering (TKDE) (special issue Best of ICDE'10 papers) (to appear)</JOURNAL>
	<VOL>23</VOL>
	<ISSUE>8</ISSUE>
	<PAGES>1215-1229</PAGES>
	<DATE>August 2011</DATE>
	<YEAR>2011</YEAR>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<NEW>yes</NEW>
</JOURNAL>	
<JOURNAL>
	<ID>10</ID>
	<AUTHORS>Robert Neumayer, Christos Doulkeridis and Kjetil N&#248;rv&#229;g</AUTHORS>
	<TITLE>A Hybrid Approach for Estimating Document Frequencies in Unstructured P2P Networks</TITLE>
	<JOURNAL>Information Systems</JOURNAL>
	<VOL>36</VOL>
	<ISSUE>3</ISSUE>
	<PAGES>579-595</PAGES>
	<DATE>May 2011</DATE>
	<YEAR>2011</YEAR>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<NEW></NEW>
</JOURNAL>
<JOURNAL>
	<ID>9</ID>
	<AUTHORS>Panagis Magdalinos, Christos Doulkeridis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Enhancing Clustering Quality through Landmark-based Dimensionality Reduction</TITLE>
	<JOURNAL>ACM Transactions on Knowledge Discovery from Data (special issue on Large-Scale Data Mining: Theory and Applications)</JOURNAL>
	<VOL>5</VOL>
	<ISSUE>2</ISSUE>
	<PAGES></PAGES>
	<DATE>February 2011</DATE>
	<YEAR>2011</YEAR>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<NEW></NEW>
</JOURNAL>
<JOURNAL>
	<ID>8</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Yannis Kotidis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Efficient Routing of Subspace Skyline Queries over Highly Distributed Data</TITLE>
	<JOURNAL>IEEE Transactions on Knowledge and Data Engineering (TKDE)</JOURNAL>
	<VOL>22</VOL>
	<ISSUE>12</ISSUE>
	<PAGES>1694-1708</PAGES>
	<DATE>December 2010</DATE>
	<YEAR>2010</YEAR>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<NEW></NEW>
</JOURNAL>
<JOURNAL>
	<ID>7</ID>
	<AUTHORS>Christos Doulkeridis, Akrivi Vlachou, Kjetil N&#248;rv&#229;g, Yannis Kotidis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Efficient Search based on Content Similarity over Self-Organizing P2P Networks</TITLE>
	<JOURNAL>Peer-to-Peer Networking and Applications, Springer</JOURNAL>
	<VOL>3</VOL>
	<ISSUE>1</ISSUE>
	<PAGES>67-79</PAGES>
	<DATE>March 2010</DATE>
	<YEAR>2010</YEAR>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<NEW></NEW>
</JOURNAL>
<JOURNAL>
	<ID>6</ID>
	<AUTHORS>Christos Doulkeridis, Akrivi Vlachou, Yannis Kotidis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Efficient Range Query Processing in Metric Spaces over Highly Distributed Data</TITLE>
	<JOURNAL>Distributed and Parallel Databases (special issue on Data Management in Peer-to-Peer Systems)</JOURNAL>
	<VOL>26</VOL>
	<ISSUE>2-3</ISSUE>
	<PAGES>155-180</PAGES>
	<DATE>December 2009</DATE>
	<YEAR>2009</YEAR>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/dapd09.pdf</PAPER>	
	<NEW></NEW>
</JOURNAL>
<JOURNAL>
	<ID>5</ID>
	<AUTHORS>Christos Doulkeridis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>CASD: Management of a Context-Aware Service Directory</TITLE>	
	<JOURNAL>Pervasive and Mobile Computing, Elsevier</JOURNAL>
	<VOL>4</VOL>
	<ISSUE>5</ISSUE>
	<PAGES>737-754</PAGES>
	<DATE>October 2008</DATE>
	<YEAR>2008</YEAR>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/pmc08.pdf</PAPER>	
	<NEW></NEW>
</JOURNAL>
<JOURNAL>
	<ID>4</ID>
	<AUTHORS>Christos Doulkeridis, Vassilis Zafeiris, Kjetil N&#248;rv&#229;g, Michalis Vazirgiannis, Emmanouel Giakoumakis</AUTHORS>
	<TITLE>Context-based Caching and Routing for P2P Web Service Discovery</TITLE>	
	<JOURNAL>Distributed and Parallel Databases</JOURNAL>
	<VOL>21</VOL>
	<ISSUE>1</ISSUE>
	<PAGES>59-84</PAGES>
	<DATE>February 2007</DATE>
	<YEAR>2007</YEAR>
	<CITATIONS>cite-dapd07.xml</CITATIONS>
	<PAPER>./papers/dapd07.pdf</PAPER>	
	<NEW></NEW>
</JOURNAL>

<JOURNAL>
	<ID>3</ID>
	<AUTHORS>Christos Doulkeridis, Kjetil N&#248;rv&#229;g, Michalis Vazirgiannis</AUTHORS>
	<TITLE>DESENT: Decentralized and Distributed Semantic Overlay Generation in P2P Networks</TITLE>
	<JOURNAL>IEEE Journal on Selected Areas in Communications (J-SAC) (special issue on Peer-to-Peer Communications and Applications)</JOURNAL>
	<VOL>25</VOL>
	<ISSUE>1</ISSUE>
	<PAGES>25-34</PAGES>
	<DATE>January 2007</DATE>
	<YEAR>2007</YEAR>
	<CITATIONS>cite-jsac07.xml</CITATIONS>
	<PAPER>./papers/jsac07.pdf</PAPER>	
	<NEW></NEW>
</JOURNAL>

<JOURNAL>
	<ID>2</ID>
	<AUTHORS>Christos Doulkeridis, Nikos Loutas, Michalis Vazirgiannis</AUTHORS>
	<TITLE>A System Architecture for Context-Aware Service Discovery</TITLE>
	<JOURNAL>Electronic Notes in Theoretical Computer Science</JOURNAL>
	<VOL>146</VOL>
	<ISSUE>1</ISSUE>
	<PAGES>101-116</PAGES>
	<DATE>January 2006</DATE>
	<YEAR>2006</YEAR>
	<CITATIONS>cite-cws05.xml</CITATIONS>
	<PAPER>./papers/cws05.pdf</PAPER>
	<NEW></NEW>
</JOURNAL>

<JOURNAL>
	<ID>1</ID>
	<AUTHORS>Yannis Stavrakas, Manolis Gergatsoulis, Christos Doulkeridis, Vassilis Zafeiris</AUTHORS>
	<TITLE>Representing and Querying Histories of Semistructured Databases Using Multidimensional OEM</TITLE>
	<JOURNAL>Information Systems</JOURNAL>
	<VOL>29</VOL>
	<ISSUE>6</ISSUE>
	<PAGES>461-482</PAGES>
	<DATE>September 2004</DATE>
	<YEAR>2004</YEAR>
	<CITATIONS>cite-is04.xml</CITATIONS>
	<PAPER>./papers/is04.pdf</PAPER>	
	<NEW></NEW>
</JOURNAL>
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<CONFERENCES>
<CONFERENCE>
	<ID>35</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis and Maria Halkidi</AUTHORS>
	<TITLE>Discovering Representative Skyline Points over Distributed Data</TITLE>
	<CONFERENCE>24th International Conference on Scientific and Statistical Database Management (SSDBM'12)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>June 25-27, 2012</DATE>
	<YEAR>2012</YEAR>
	<LOC>Chania, Greece</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/ssdbm12.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW>yes</NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>34</ID>
	<AUTHORS>Christos Doulkeridis, Akrivi Vlachou, Kjetil N&#248;rv&#229;g, Yannis Kotidis and Neoklis Polyzotis</AUTHORS>
	<TITLE>Processing of Rank Joins in Highly Distributed Systems</TITLE>
	<CONFERENCE>28th IEEE International Conference on Data Engineering (ICDE'12)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>April 1-5, 2012</DATE>
	<YEAR>2012</YEAR>
	<LOC>Washington, DC, USA</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/icde12.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW>yes</NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>33</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Neoklis Polyzotis</AUTHORS>
	<TITLE>Skyline Query Processing over Joins</TITLE>
	<CONFERENCE>ACM International Conference on Management of Data (SIGMOD'11)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>June 12-16</DATE>
	<YEAR>2011</YEAR>
	<LOC>Athens, Greece</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/sigmod11.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW>yes</NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>32</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Kjetil N&#248;rv&#229;g</AUTHORS>
	<TITLE>Monitoring Reverse Top-k Queries Over Mobile Devices</TITLE>
	<CONFERENCE>10th ACM International Workshop on Data Engineering for Wireless and Mobile Access (MobiDE'11)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>June 12, 2011</DATE>
	<YEAR>2011</YEAR>
	<LOC>Athens, Greece</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/mobide11.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW>yes</NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>31</ID>
	<AUTHORS>Jo&#227;o B. Rocha-Junior, Akrivi Vlachou, Christos Doulkeridis and Kjetil N&#248;rv&#229;g</AUTHORS>
	<TITLE>Efficient Processing of Top-k Spatial Preference Queries</TITLE>
	<CONFERENCE>VLDB Endowment (PVLDB), 4(2)</CONFERENCE>
	<PAGES>93-104</PAGES>
	<DATE>August 29 - September 3, 2011</DATE>
	<YEAR>2011</YEAR>
	<LOC>Seattle, WA</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/pvldb11.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>30</ID>
	<AUTHORS>Norvald H. Ryeng, Akrivi Vlachou, Christos Doulkeridis and Kjetil N&#248;rv&#229;g</AUTHORS>
	<TITLE>Efficient Distributed Top-k Query Processing with Caching</TITLE>
	<CONFERENCE>16th International Conference on Database Systems for Advanced Applications (DASFAA'11)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>April 22-25, 2011</DATE>
	<YEAR>2011</YEAR>
	<LOC>Hong Kong</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/dasfaa11.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>29</ID>
	<AUTHORS>Jo&#227;o B. Rocha-Junior, Akrivi Vlachou, Christos Doulkeridis and Kjetil N&#248;rv&#229;g</AUTHORS>
	<TITLE>Efficient Execution Plans for Distributed Skyline Query Processing</TITLE>
	<CONFERENCE>14th International Conference on Extending Database Technology (EDBT'11)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>March 21-25, 2011</DATE>
	<YEAR>2011</YEAR>
	<LOC>Uppsala, Sweden</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/edbt11.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>28</ID>
	<AUTHORS>Christos Doulkeridis, Akrivi Vlachou, Kjetil N&#248;rv&#229;g, Yannis Kotidis and Michalis Vazirgiannis</AUTHORS>
	<TITLE>On the Selectivity of Multidimensional Routing Indices</TITLE>
	<CONFERENCE>19th ACM Conference on Information and Knowledge Management (CIKM'10)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>October 26-30, 2010</DATE>
	<YEAR>2010</YEAR>
	<LOC>Toronto, Canada</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/cikm10.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE>13,4%</ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>27</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Kjetil N&#248;rv&#229;g and Yannis Kotidis</AUTHORS>
	<TITLE>Identifying the Most Influential Data Objects with Reverse Top-k Queries</TITLE>
	<CONFERENCE>36th International Conference on Very Large Data Bases (VLDB'10)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>September, 2010</DATE>
	<YEAR>2010</YEAR>
	<LOC>Singapore</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/vldb10.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
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<CONFERENCE>
	<ID>26</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis and Yannis Kotidis</AUTHORS>
	<TITLE>Peer-to-Peer Similarity Search based on M-Tree Indexing</TITLE>
	<CONFERENCE>15th International Conference on Database Systems for Advanced Applications (DASFAA'10) (short paper)</CONFERENCE>
	<PAGES>269-275</PAGES>
	<DATE>April 1-4, 2010</DATE>
	<YEAR>2010</YEAR>
	<LOC>Tsukuba, Japan</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
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	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
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<CONFERENCE>
	<ID>25</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Yannis Kotidis and Kjetil N&#248;rv&#229;g</AUTHORS>
	<TITLE>Reverse Top-k Queries</TITLE>
	<CONFERENCE>26th IEEE International Conference on Data Engineering (ICDE'10)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>March 1-6, 2010</DATE>
	<YEAR>2010</YEAR>
	<LOC>Long Beach, CA</LOC>
	<CITATIONS>cite-icde10.xml</CITATIONS>
	<PAPER>./papers/icde10.pdf</PAPER>	
	<PPT>./presentations/icde10.pdf</PPT>
	<POSTER></POSTER>
	<ACCRATE>12,5%</ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>24</ID>
	<AUTHORS>Christos Doulkeridis, Akrivi Vlachou, Kjetil N&#248;rv&#229;g, Yannis Kotidis and Michalis Vazirgiannis</AUTHORS>
	<TITLE>Multidimensional Routing Indices for Efficient Distributed Query Processing</TITLE>
	<CONFERENCE>18th ACM Conference on Information and Knowledge Management (CIKM'09) (short paper)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>November 2-6, 2009</DATE>
	<YEAR>2009</YEAR>
	<LOC>Hong-Kong</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/cikm09.pdf</PAPER>	
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<CONFERENCE>
	<ID>23</ID>
	<AUTHORS>Robert Neumayer, Christos Doulkeridis and Kjetil N&#248;rv&#229;g</AUTHORS>
	<TITLE>Aggregation of Document Frequencies in Unstructured P2P Networks</TITLE>	
	<CONFERENCE>10th International Conference on Web Information Systems Engineering (WISE'09)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>October 5-7, 2009</DATE>
	<YEAR>2009</YEAR>
	<LOC>Poznan, Poland</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/wise09.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
</CONFERENCE>
<CONFERENCE>
	<ID>22</ID>
	<AUTHORS>Jo&#227;o B. Rocha-Junior, Akrivi Vlachou, Christos Doulkeridis and Kjetil N&#248;rv&#229;g</AUTHORS>
	<TITLE>AGiDS: A Grid-based Strategy for Distributed Skyline Query Processing</TITLE>
	<CONFERENCE>2nd International Conference on Data Management in Grid and P2P Systems (Globe 2009)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>August 31 - September 4, 2009</DATE>
	<YEAR>2009</YEAR>
	<LOC>Linz, Austria</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>21</ID>
	<AUTHORS>Panagis Magdalinos, Christos Doulkeridis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>FEDRA: A Fast and Efficient Dimensionality Reduction Algorithm</TITLE>	
	<CONFERENCE>SIAM International Conference on Data Mining (SDM'09)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>April 30 - May 2, 2009</DATE>
	<YEAR>2009</YEAR>
	<LOC>Nevada, USA</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/sdm09.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
</CONFERENCE>
<CONFERENCE>
	<ID>20</ID>
	<AUTHORS>Christos Doulkeridis, Kjetil N&#248;rv&#229;g, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Peer-to-Peer Similarity Search over Widely Distributed Document Collections</TITLE>
	<CONFERENCE>6th Workshop on Large-Scale Distributed Systems for Information Retrieval (LSDS-IR'08, in conjunction with CIKM'2008)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>October 2008</DATE>
	<YEAR>2008</YEAR>
	<LOC>Napa Valley, USA</LOC>
	<CITATIONS>cite-lsdsir08.xml</CITATIONS>
	<PAPER>./papers/lsdsir08.pdf</PAPER>	
	<PPT>./presentations/LSDS-IR08.pdf</PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
</CONFERENCE>
<CONFERENCE>
	<ID>19</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Kjetil N&#248;rv&#229;g, Michalis Vazirgiannis</AUTHORS>
	<TITLE>On Efficient Top-k Query Processing in Highly Distributed Environments</TITLE>
	<CONFERENCE>ACM International Conference on Management of Data (SIGMOD'08)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>June 9-12</DATE>
	<YEAR>2008</YEAR>
	<LOC>Vancouver, Canada</LOC>
	<CITATIONS>cite-sigmod08a.xml</CITATIONS>
	<PAPER>./papers/sigmod08a.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE>17,9%</ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>18</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Yannis Kotidis</AUTHORS>
	<TITLE>Angle-based Space Partitioning for Efficient Parallel Skyline Computation</TITLE>
	<CONFERENCE>ACM International Conference on Management of Data (SIGMOD'08)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>June 9-12</DATE>
	<YEAR>2008</YEAR>
	<LOC>Vancouver, Canada</LOC>
	<CITATIONS>cite-sigmod08b.xml</CITATIONS>
	<PAPER>./papers/sigmod08b.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE>17,9%</ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>17</ID>
	<AUTHORS>Christos Doulkeridis, Kjetil N&#248;rv&#229;g, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Schema-Assisted Peer Selection for XML Querying in Unstructured P2P Systems</TITLE>
	<CONFERENCE>7th ACM International Workshop on Data Engineering for Wireless and Mobile Access (MobiDE'08)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>June 13, 2008</DATE>
	<YEAR>2008</YEAR>
	<LOC>Vancouver, Canada</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/mobide08.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>16</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Kjetil N&#248;rv&#229;g, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Skyline-based Peer-to-Peer Top-k Query Processing</TITLE>
	<CONFERENCE>24th IEEE International Conference on Data Engineering (ICDE'08)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>April 7-12, 2008</DATE>
	<YEAR>2008</YEAR>
	<LOC>Cancun, Mexico</LOC>
	<CITATIONS>cite-icde08.xml</CITATIONS>
	<PAPER>./papers/icde08.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>15</ID>
	<AUTHORS>Christos Doulkeridis, Akrivi Vlachou, Yannis Kotidis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Peer-to-Peer Similarity Search in Metric Spaces</TITLE>
	<CONFERENCE>33rd International Conference on Very Large Data Bases (VLDB'07)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>September 23-28, 2007</DATE>
	<YEAR>2007</YEAR>
	<LOC>Vienna, Austria</LOC>
	<CITATIONS>cite-vldb07.xml</CITATIONS>
	<PAPER>./papers/simpeer.pdf</PAPER>	
	<PPT>./presentations/vldb07.pdf</PPT>
	<POSTER></POSTER>
	<ACCRATE>16,4%</ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>14</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Dimitris Mavroeidis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Designing a Peer-to-Peer Architecture for Distributed Image Retrieval</TITLE>
	<CONFERENCE>5th International Workshop on Adaptive Multimedia Retrieval (AMR'07)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>July 5-6, 2007</DATE>
	<YEAR>2007</YEAR>
	<LOC>Paris, France</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>13</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Yannis Kotidis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>SKYPEER: Efficient Subspace Skyline Computation over Distributed Data</TITLE>
	<CONFERENCE>23rd IEEE International Conference on Data Engineering (ICDE'07)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>April 16-20, 2007</DATE>
	<YEAR>2007</YEAR>
	<LOC>Istanbul, Turkey</LOC>
	<CITATIONS>cite-icde07.xml</CITATIONS>
	<PAPER>./papers/icde07.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE>18,5%</ACCRATE>
	<NEW></NEW>
	<SPECIAL></SPECIAL>
	<SPECIALLINK></SPECIALLINK>
</CONFERENCE>
<CONFERENCE>
	<ID>12</ID>
	<AUTHORS>Panagis Magdalinos, Christos Doulkeridis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>K-Landmarks: Distributed Dimensionality Reduction for Clustering Quality Maintenance</TITLE>	
	<CONFERENCE>10th European Conference on Principles and Practice of Knowledge Discovery in Databases (PKDD'06)</CONFERENCE>
	<PAGES>322-334</PAGES>
	<DATE>September 18-22, 2006</DATE>
	<YEAR>2006</YEAR>
	<LOC>Berlin, Germany</LOC>
	<CITATIONS>cite-pkdd06.xml</CITATIONS>
	<PAPER>./papers/xKLandmarks.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE>14,5%</ACCRATE>
	<NEW></NEW>
</CONFERENCE>

<CONFERENCE>
	<ID>11</ID>
	<AUTHORS>Christos Doulkeridis, Kjetil N&#248;rv&#229;g, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Schema Caching for Improved XML Query Processing in P2P Systems</TITLE>
	<CONFERENCE>6th IEEE International Conference on Peer-to-Peer Computing (P2P'06)</CONFERENCE>
	<PAGES>73-74</PAGES>
	<DATE>September 2006</DATE>
	<YEAR>2006</YEAR>
	<LOC>Cambridge, UK</LOC>
	<CITATIONS>cite-p2p06.xml</CITATIONS>
	<PAPER>./papers/p2p06.pdf</PAPER>	
	<PPT>./presentations/P2P06.pdf</PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
</CONFERENCE>
<CONFERENCE>
	<ID>10</ID>
	<AUTHORS>Christos Doulkeridis, Kjetil N&#248;rv&#229;g, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Scalable Semantic Overlay Generation for P2P-based Digital Libraries</TITLE>
	<CONFERENCE>10th European Conference on Research and Advanced Technology for Digital Libraries (ECDL'06)</CONFERENCE>
	<PAGES>26-38</PAGES>
	<DATE>September 2006</DATE>
	<YEAR>2006</YEAR>
	<LOC>Alicante, Spain</LOC>
	<CITATIONS>cite-ecdl06.xml</CITATIONS>
	<PAPER>./papers/ecdl06.pdf</PAPER>	
	<PPT>./presentations/ecdl06.pdf</PPT>
	<POSTER></POSTER>
	<ACCRATE>28%</ACCRATE>
	<NEW></NEW>
</CONFERENCE>
<CONFERENCE>
	<ID>9</ID>
	<AUTHORS>Kjetil N&#248;rv&#229;g, Christos Doulkeridis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Taxonomy Caching: A Scalable Low-Cost Mechanism for Indexing Remote Contents in Peer-to-Peer Systems</TITLE>
	<CONFERENCE>IEEE International Conference on Pervasive Services 2006 (ICPS'06)</CONFERENCE>
	<PAGES>213-221</PAGES>
	<DATE>June 2006</DATE>
	<YEAR>2006</YEAR>
	<LOC>Lyon, France</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/tcache.pdf</PAPER>	
	<PPT>./presentations/icps06.pdf</PPT>
	<POSTER></POSTER>
	<ACCRATE>20,9%</ACCRATE>
	<NEW></NEW>
</CONFERENCE>

<CONFERENCE>
	<ID>8</ID>
	<AUTHORS>Christos Doulkeridis, Kjetil N&#248;rv&#229;g, Michalis Vazirgiannis</AUTHORS>
	<TITLE>The SOWES Approach to P2P Web Search using Semantic Overlays</TITLE>
	<CONFERENCE>15th World Wide Web Conference (WWW'06) - Alternate Track Papers and Posters</CONFERENCE>
	<PAGES>1027-1028</PAGES>
	<DATE>May 23-26, 2006</DATE>
	<YEAR>2006</YEAR>
	<LOC>Edinburgh, Scotland</LOC>
	<CITATIONS>cite-www06.xml</CITATIONS>
	<PAPER>./papers/sowes@www06.pdf</PAPER>	
	<PPT></PPT>
	<POSTER>./papers/www06poster.pdf</POSTER>
	<ACCRATE></ACCRATE> 
	<NEW></NEW>
</CONFERENCE>

<CONFERENCE>
	<ID>7</ID>
	<AUTHORS>Michalis Vazirgiannis, Kjetil N&#248;rv&#229;g, Christos Doulkeridis</AUTHORS>
	<TITLE>Peer-to-Peer Clustering for Semantic Overlay Network Generation</TITLE>
	<CONFERENCE>6th International Workshop on Pattern Recognition in Information Systems (PRIS'06), co-located with ICEIS 2006 (invited paper), INSTICC Press 2006, ISBN 972-8865-55-4</CONFERENCE>
	<PAGES></PAGES>
	<DATE>May 2006</DATE>
	<YEAR>2006</YEAR>
	<LOC>Paphos, Cyprus</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/pris06.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
</CONFERENCE>

<CONFERENCE>
	<ID>6</ID>
	<AUTHORS>Panagis Magdalinos, Christos Doulkeridis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>A Novel Effective Distributed Dimensionality Reduction Algorithm</TITLE>
	<CONFERENCE>International Workshop on Feature Selection for Data Mining (FSDM'06), in conjunction with 2006 SIAM Conference on Data Mining</CONFERENCE>
	<PAGES>18-25</PAGES>
	<DATE>April 22, 2006</DATE>
	<YEAR>2006</YEAR>
	<LOC>Bethesda, Maryland</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/ddr06.pdf</PAPER>	
	<PPT>./presentations/FSDM.pdf</PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
</CONFERENCE>
<!--
<CONFERENCE>
	<ID>6</ID>
	<AUTHORS>Christos Doulkeridis, Nikos Loutas, Michalis Vazirgiannis</AUTHORS>
	<TITLE>A System Architecture for Context-Aware Service Discovery</TITLE>
	<CONFERENCE>International Workshop on Context for Web Services (CWS'05) (Held in conjunction with the 5th International and Interdisciplinary Conference on Modeling and Using Context)</CONFERENCE>
	<PAGES>101-116</PAGES>
	<DATE>July 5, 2005</DATE>
	<YEAR>2005</YEAR>
	<LOC>Paris, France</LOC>
	<CITATIONS>cite-cws05.xml</CITATIONS>
	<PAPER>./papers/cws05.pdf</PAPER>	
	<PPT>./presentations/cws05.pdf</PPT>
	<POSTER></POSTER>
	<ACCRATE>39%</ACCRATE>
	<NEW></NEW>
	<SPECIAL>In top-25 hottest ENTCS articles (Jan-Mar 2006)</SPECIAL>
	<SPECIALLINK>http://top25.sciencedirect.com/index.php?subject_area_id=7&amp;journal_id=15710661</SPECIALLINK>
</CONFERENCE>
-->
<CONFERENCE>
	<ID>5</ID>
	<AUTHORS>Vassilis Zafeiris, Christos Doulkeridis, Petros Belsis, Ioannis Chalaris</AUTHORS>
	<TITLE>Agent-mediated Knowledge Management in Multiple Autonomous Domains</TITLE>
	<CONFERENCE>AAMAS 2005 Workshop on Agent Mediated Knowledge Management (AMKM'05)</CONFERENCE>
	<PAGES></PAGES>
	<DATE>July 2005</DATE>
	<YEAR>2005</YEAR>
	<LOC>Utrecht, the Netherlands</LOC>
	<CITATIONS></CITATIONS>
	<PAPER>./papers/amkm05.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE></ACCRATE>
	<NEW></NEW>
</CONFERENCE>

<CONFERENCE>
	<ID>4</ID>
	<AUTHORS>Christos Doulkeridis, Vassilis Zafeiris, Michalis Vazirgiannis</AUTHORS>
	<TITLE>The Role of Caching and Context-Awareness in P2P Service Discovery</TITLE>
	<CONFERENCE>6th International Conference on Mobile Data Management (MDM'05)</CONFERENCE>
	<PAGES>142-146</PAGES>
	<DATE>May 9-13, 2005</DATE>
	<YEAR>2005</YEAR>
	<LOC>Ayia Napa, Cyprus</LOC>
	<CITATIONS>cite-mdm05.xml</CITATIONS>
	<PAPER>./papers/mdm05.pdf</PAPER>	
	<PPT>./presentations/mdm05.pdf</PPT>
	<POSTER></POSTER>
	<ACCRATE>39%</ACCRATE>
	<NEW></NEW>
</CONFERENCE>

<CONFERENCE>
	<ID>3</ID>
	<AUTHORS>Christos Doulkeridis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Querying and Updating a Context-Aware Service Directory in Mobile Environments</TITLE>
	<CONFERENCE>2004 IEEE/WIC/ACM International Conference on Web Intelligence (WI'04)</CONFERENCE>
	<PAGES>562-565</PAGES>
	<DATE>September 20-24, 2004</DATE>
	<YEAR>2004</YEAR>
	<LOC>Beijing, China</LOC>
	<CITATIONS>cite-wi04.xml</CITATIONS>
	<PAPER>./papers/wi04.ps</PAPER>	
	<PPT>./presentations/WI04.pdf</PPT>
	<POSTER></POSTER>
	<ACCRATE>20%</ACCRATE>
	<NEW></NEW>
	<SPECIAL>Second winner of Michael Dertouzos competition (WCIT 2004)</SPECIAL>
	<SPECIALLINK>http://cordis.europa.eu/greece/news_rd41.htm</SPECIALLINK>
</CONFERENCE>

<CONFERENCE>
	<ID>2</ID>
	<AUTHORS>Christos Doulkeridis, Efstratios Valavanis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Towards a Context-Aware Service Directory</TITLE>
	<CONFERENCE>4th VLDB Workshop on Technologies for E-Services (TES'03), held in conjunction with the 29th International Conference on Very Large Data Bases (VLDB 2003)</CONFERENCE>
	<PAGES>54-65</PAGES>
	<DATE>September 8, 2003</DATE>
	<YEAR>2003</YEAR>
	<LOC>Berlin, Germany</LOC>
	<CITATIONS>cite-tes03.xml</CITATIONS>
	<PAPER>./papers/tes03.pdf</PAPER>	
	<PPT>./presentations/TES03.pdf</PPT>
	<POSTER></POSTER>
	<ACCRATE>37,2%</ACCRATE>
	<NEW></NEW>
</CONFERENCE>


<CONFERENCE>
	<ID>1</ID>
	<AUTHORS>Yannis Stavrakas, Manolis Gergatsoulis, Christos Doulkeridis, Vassilis Zafeiris</AUTHORS>
	<TITLE>Accomodating Changes in Semistructured Databases Using Multidimensional OEM</TITLE>
	<CONFERENCE>Advances in Databases and Information Systems (ADBIS'02), 6th East-European Conference</CONFERENCE>
	<PAGES>360-373</PAGES>
	<DATE>September 8-11, 2002</DATE>
	<YEAR>2002</YEAR>
	<LOC>Bratislava, Slovakia</LOC>
	<CITATIONS>cite-adbis02.xml</CITATIONS>
	<PAPER>./papers/adbis02.pdf</PAPER>	
	<PPT></PPT>
	<POSTER></POSTER>
	<ACCRATE>21,7%</ACCRATE>
	<NEW></NEW>
</CONFERENCE>

</CONFERENCES>

<NATIONALCONFS>
<NATIONALCONF>
	<ID>11</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Kjetil N&#248;rv&#229;g, Yannis Kotidis</AUTHORS>
	<TITLE>Using Reverse Top-k Queries for Identifying the Most Influential Data Objects</TITLE>
	<CONFERENCE>10th Hellenic Data Management Symposium (HDMS'11)</CONFERENCE>
	<DATE>June 2011</DATE>
	<YEAR>2011</YEAR>
	<LOC>Athens, Greece</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT></PPT>
	<ACCRATE></ACCRATE>
</NATIONALCONF>
<NATIONALCONF>
	<ID>10</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Neoklis Polyzotis</AUTHORS>
	<TITLE>Skyline Queries over Relational Joins</TITLE>
	<CONFERENCE>10th Hellenic Data Management Symposium (HDMS'11)</CONFERENCE>
	<DATE>June 2011</DATE>
	<YEAR>2011</YEAR>
	<LOC>Athens, Greece</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT></PPT>
	<ACCRATE></ACCRATE>
</NATIONALCONF>
<NATIONALCONF>
	<ID>9</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Yannis Kotidis, Kjetil N&#248;rv&#229;g</AUTHORS>
	<TITLE>Efficient Algorithms for Reverse Top-k Queries</TITLE>
	<CONFERENCE>9th Hellenic Data Management Symposium (HDMS'10)</CONFERENCE>
	<DATE>July 2010</DATE>
	<YEAR>2010</YEAR>
	<LOC>Ayia Napa, Cyprus</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT></PPT>
	<ACCRATE></ACCRATE>
</NATIONALCONF>
<NATIONALCONF>
	<ID>8</ID>
	<AUTHORS>Panagis Magdalinos, Christos Doulkeridis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>FEDRA: A Fast and Efficient Dimensionality Reduction Algorithm</TITLE>
	<CONFERENCE>8th Hellenic Data Management Symposium (HDMS'09)</CONFERENCE>
	<DATE>August 2009</DATE>
	<YEAR>2009</YEAR>
	<LOC>Athens, Greece</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT></PPT>
	<ACCRATE></ACCRATE>
</NATIONALCONF>
<NATIONALCONF>
	<ID>7</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Yannis Kotidis</AUTHORS>
	<TITLE>Skyline Computation in a Parallel Shared-Nothing Architecture</TITLE>
	<CONFERENCE>8th Hellenic Data Management Symposium (HDMS'09)</CONFERENCE>
	<DATE>August 2009</DATE>
	<YEAR>2009</YEAR>
	<LOC>Athens, Greece</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT></PPT>
	<ACCRATE></ACCRATE>
</NATIONALCONF>
<NATIONALCONF>
	<ID>6</ID>
	<AUTHORS>Christos Doulkeridis, Akrivi Vlachou, Yannis Kotidis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Efficient Similarity Search in Highly Distributed Environments</TITLE>
	<CONFERENCE>7th Hellenic Data Management Symposium (HDMS'08)</CONFERENCE>
	<DATE>July 2008</DATE>
	<YEAR>2008</YEAR>
	<LOC>Heraklion, Greece</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT></PPT>
	<ACCRATE></ACCRATE>
</NATIONALCONF>
<NATIONALCONF>
	<ID>5</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Kjetil N&#248;rv&#229;g, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Efficient Processing of Top-k Queries in P2P Networks</TITLE>
	<CONFERENCE>7th Hellenic Data Management Symposium (HDMS'08)</CONFERENCE>
	<DATE>July 2008</DATE>
	<YEAR>2008</YEAR>
	<LOC>Heraklion, Greece</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT></PPT>
	<ACCRATE></ACCRATE>
</NATIONALCONF>
<NATIONALCONF>
	<ID>4</ID>
	<AUTHORS>Akrivi Vlachou, Christos Doulkeridis, Yannis Kotidis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>SKYPEER: Efficient Subspace Skyline Computation over Distributed Data</TITLE>
	<CONFERENCE>6th Hellenic Data Management Symposium (HDMS'07)</CONFERENCE>
	<DATE>July 5-6, 2007</DATE>
	<YEAR>2007</YEAR>
	<LOC>Athens, Greece</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT></PPT>
	<ACCRATE></ACCRATE>
</NATIONALCONF>

<NATIONALCONF>
	<ID>3</ID>
	<AUTHORS>Kjetil N&#248;rv&#229;g, Christos Doulkeridis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>The SOWES Approach to P2P Web Search using Semantic Overlays</TITLE>
	<CONFERENCE>5th Hellenic Data Management Symposium (HDMS'06)</CONFERENCE>
	<DATE>September 7-8, 2006</DATE>
	<YEAR>2006</YEAR>
	<LOC>Thessaloniki, Greece</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT>./presentations/HDMS06.pdf</PPT>
	<ACCRATE></ACCRATE>
</NATIONALCONF>

<NATIONALCONF>
	<ID>2</ID>
	<AUTHORS>Christos Doulkeridis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>Updating a Context-Aware Service Directory for M-Services</TITLE>
	<CONFERENCE>3rd Hellenic Data Management Symposium (HDMS'04)</CONFERENCE>
	<DATE>June 28-29, 2004</DATE>
	<YEAR>2004</YEAR>
	<LOC>Athens, Greece</LOC>
	<CITATIONS></CITATIONS>
	<PAPER></PAPER>	
	<PPT>./presenations/hdms04.pdf</PPT>
	<ACCRATE></ACCRATE>
</NATIONALCONF>

<NATIONALCONF>
	<ID>1</ID>
	<AUTHORS>Vassilis Zafeiris, Christos Doulkeridis, Yannis Stavrakas, Manolis Gergatsoulis</AUTHORS>
	<TITLE>An Infrastructure for Manipulating Multidimensional Semistructured Data</TITLE>
	<CONFERENCE>1st Hellenic Data Management Symposium (HDMS'02)</CONFERENCE>
	<DATE>July 22-23, 2002</DATE>
	<YEAR>2002</YEAR>
	<LOC>Athens, Greece</LOC>
	<CITATIONS>cite-hdms02.xml</CITATIONS>
	<PAPER>./papers/hdms02.pdf</PAPER>	
	<PPT></PPT>
	<ACCRATE></ACCRATE>
</NATIONALCONF>
</NATIONALCONFS>

<TECHREPORTS>

<TECHREPORT>
	<ID>2</ID>
	<AUTHORS>Panagis Magdalinos, Christos Doulkeridis, Michalis Vazirgiannis</AUTHORS>
	<TITLE>A Novel Effective Distributed Dimensionality Reduction Algorithm</TITLE>
	<CONFERENCE></CONFERENCE>
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	<AUTHORS>Christos Doulkeridis, Kjetil N&#248;rv&#229;g, Michalis Vazirgiannis</AUTHORS>
	<TITLE>DESENT: Decentralized and Distributed Semantic Overlay Generation in P2P Networks</TITLE>
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	<DATE>2005</DATE>
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	<LOC></LOC>
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