@article{cimiano2006ontologies, title = {Ontologies on Demand? - A Description of the State-of-the-Art, Applications, Challenges and Trends for Ontology Learning from Text}, author = {Philipp Cimiano and Johanna Völker and Rudi Studer}, journal = {Information, Wissenschaft und Praxis}, month = {OCT}, note = {see the special issue for more contributions related to the Semantic Web}, number = {6-7}, pages = {315-320}, volume = 57, year = 2006, url = {\url{http://www.aifb.uni-karlsruhe.de/WBS/pci/Publications/iwp06.pdf}}, description = {Institut AIFB - Publikation: Ontologies on Demand? - A Description of the State-of-the-Art, Applications, Challenges and Trends for Ontology Learning from Text}, biburl = {http://www.bibsonomy.org/bibtex/2fe4c2950b5be221b493e29e4339240e8/dbenz}, keywords = {overview ontology learning} } @article{0953-8984-17-24-003, title = {What is the temperature of a granular medium?}, author = {A Baldassarri and A Barrat and G D'Anna and V Loreto and P Mayor and A Puglisi}, journal = {Journal of Physics: Condensed Matter}, number = 24, pages = {S2405-S2428}, volume = 17, year = 2005, url = {http://stacks.iop.org/0953-8984/17/S2405}, abstract = {In this paper we discuss whether thermodynamical concepts and in particular the notion of temperature could be relevant for the dynamics of granular systems. We briefly review how a temperature-like quantity can be defined and measured in granular media in very different regimes, namely the glassy-like, the liquid-like and the granular gas. The common denominator will be given by the fluctuation\–dissipation theorem, whose validity is explored by means of both numerical and experimental techniques. It turns out that, although a definition of a temperature is possible in all cases, its interpretation is far from being obvious. We discuss the possible perspectives both from the theoretical and, more importantly, from the experimental point of view. }, biburl = {http://www.bibsonomy.org/bibtex/2325d76a854983c160c4d24cb4c36fd50/andreab}, keywords = {gases maxwell granular physics 2005 myown fdt imported temperature} } @article{fractalplanets2008, title = {Fractal properties of isolines at varying altitude reveal different dominant geological processes on Earth}, author = {Andrea Baldassarri and Marco Montuori and Olga Prieto-Ballesteros and Susanna Cueva Manrubia}, journal = {Journal of Geophysical Research}, note = {in press}, year = 2008, abstract = {Geometrical properties of landscapes result from the geological processes that have acted through time. The quantitative analysis of natural relief represents an objective form of aiding in the visual interpretation of landscapes, as studies on coastlines, river networks, and global topography, have shown. Still, an open question is whether a clear relationship between the quantitative properties of landscapes and the dominant geomorphologic processes that originate them can be established. In this contribution, we show that the geometry of topographic isolines is an appropriate observable to help disentangle such a relationship. A fractal analysis of terrestrial isolines yields a clear identification of trenches and abyssal plains, differentiates oceanic ridges from continental slopes and platforms, localizes coastlines and river systems, and isolates areas at high elevation (or latitude) subjected to the erosive action of ice. The study of the geometrical properties of the Lunar landscape supports the existence of a correspondence between principal geomorphic processes and landforms. Our analysis can be easily applied to other planetary bodies. }, biburl = {http://www.bibsonomy.org/bibtex/22680668c3dc699cc9ccf839b12b0a4b3/andreab}, keywords = {geophysics 2008 isoline fractals myown geomorphology coastlines} } @inproceedings{DBLP:conf/semweb/MoriTMI06, title = {Extracting Relations in Social Networks from the Web Using Similarity Between Collective Contexts}, author = {Junichiro Mori and Takumi Tsujishita and Yutaka Matsuo and Mitsuru Ishizuka}, booktitle = {International Semantic Web Conference}, crossref = {DBLP:conf/semweb/2006}, pages = {487-500}, year = 2006, ee = {http://dx.doi.org/10.1007/11926078_35}, bibsource = {DBLP, http://dblp.uni-trier.de}, biburl = {http://www.bibsonomy.org/bibtex/2f1a145a60c3e4d39e91b39a7c1178110/dbenz}, keywords = {folksonomy social-networks relations toread extract resources} } @misc{ailon-2007, title = {An efficient reduction of ranking to classification}, author = {Nir Ailon and Mehryar Mohri}, year = 2007, url = {http://www.citebase.org/abstract?id=oai:arXiv.org:0710.2889}, description = {[0710.2889] An efficient reduction of ranking to classification}, abstract = { This paper describes an efficient reduction of the learning problem of ranking to binary classification. The reduction guarantees an average pairwise misranking regret of at most that of the binary classifier regret, improving a recent result of Balcan et al which only guarantees a factor of 2. Moreover, our reduction applies to a broader class of ranking loss functions, admits a simpler proof, and the expected running time complexity of our algorithm in terms of number of calls to a classifier or preference function is improved from $\Omega(n^2)$ to $O(n \log n)$. In addition, when the top $k$ ranked elements only are required ($k \ll n$), as in many applications in information extraction or search engines, the time complexity of our algorithm can be further reduced to $O(k \log k + n)$. Our reduction and algorithm are thus practical for realistic applications where the number of points to rank exceeds several thousands. Much of our results also extend beyond the bipartite case previously studied.}, biburl = {http://www.bibsonomy.org/bibtex/2d8bd1b99e3c245d17b577514727ebff2/hotho}, keywords = {ranking learning toread} } @book{ferrazza2008porno, title = {Personal porno. Come diventare pornostar in rete e manager di se stessi (senza farsi fottere)}, author = {Federico Ferrazza}, publisher = {fazi}, year = 2008, url = {http://www.fazieditore.it/scheda_Libro.aspx?l=1119}, abstract = {Internet ha cambiato il nostro modo di informarci, di comunicare, acquistare, di conoscere nuove persone. E di fare sesso. Non soltanto perché ha reso immediatamente disponibile materiale hard da vedere quando e dove si vuole, ma anche perché -grazie a siti di video sharing per adulti come PornoTube o YouPorn - da qualche tempo a questa parte ognuno può mettere in Rete i propri filmati amatoriali a contenuto erotico. Una vera rivoluzione per i professionisti del campo, che lamentano una crisi irreversibile del mercato. E per tanta gente comune che si improvvisa pornostar: protagonista di sequenze riprese da videocamere da poche centinaia di euro (o addirittura da cellulari) e messe gratuitamente a disposizione di migliaia di utenti sconosciuti. Federico Terrazza, giornalista esperto di nuove tecnologie, va a scandagliare il bizzarro e variegato universo della sessualità on line nelle sue molteplici accezioni: dalle studentesse e impiegate che "arrotondano" spogliandosi davanti a una webcam all'industria che gestisce la messaggeria erotica più visitata al mondo (AdultFriendFinder.com, che raccoglie 7,2 milioni di contatti al giorno), dai videogame porno in 3D in stile Second Life ai negozi virtuali di sex toysì fino ai minifilm hard da scaricare sul telefonino. }, biburl = {http://www.bibsonomy.org/bibtex/2296360a05851fa903e52b4968a45a12f/andreab}, keywords = {italia book internet web2.0 porno} } @inproceedings{Detecting_Commmunities_via_Simultaneous_Clustering_of_Graphs_and_Folksonomies, title = {{Detecting Commmunities via Simultaneous Clustering of Graphs and Folksonomies}}, author = {Akshay Java and Anupam Joshi and Tim Finin}, booktitle = {WebKDD 2008 Workshop on Web Mining and Web Usage Analysis}, month = {August}, note = {To Appear}, year = 2008, biburl = {http://www.bibsonomy.org/bibtex/2645abd6b3191a2a6e844d7542651ed1c/hotho}, keywords = {detection community clusterig toread folksonomy} } @inproceedings{1367542, title = {Flickr tag recommendation based on collective knowledge}, address = {New York, NY, USA}, author = {B\"{o}rkur Sigurbj\"{o}rnsson and Roelof van Zwol}, booktitle = {WWW '08: Proceeding of the 17th international conference on World Wide Web}, pages = {327--336}, publisher = {ACM}, year = 2008, url = {http://portal.acm.org/citation.cfm?id=1367497.1367542}, location = {Beijing, China}, isbn = {978-1-60558-085-2}, doi = {http://doi.acm.org/10.1145/1367497.1367542}, description = {Flickr tag recommendation based on collective knowledge}, biburl = {http://www.bibsonomy.org/bibtex/21180c2b62d74ec836dce01b7466f88d3/andreab}, keywords = {wordnet www2008 yahoo flickr statistics tags recommendation imported co-occurrence tagging} } @inproceedings{1341558, title = {Can social bookmarking improve web search?}, address = {New York, NY, USA}, author = {Paul Heymann and Georgia Koutrika and Hector Garcia-Molina}, booktitle = {WSDM '08: Proceedings of the international conference on Web search and web data mining}, pages = {195--206}, publisher = {ACM}, year = 2008, url = {http://portal.acm.org/citation.cfm?id=1341531.1341558&coll=Portal&dl=GUIDE&CFID=20557217&CFTOKEN=93769937}, location = {Palo Alto, California, USA}, isbn = {978-1-59593-927-9}, doi = {http://doi.acm.org/10.1145/1341531.1341558}, biburl = {http://www.bibsonomy.org/bibtex/27ffee89349e08beef1b55ab9d68ddd30/andreab}, keywords = {tagging folksonomy delicious data statistics search} } @inproceedings{cimiano2003automatic, title = {Automatic Acquisition of Taxonomies from Text: FCA meets NLP}, address = {Cavtat-Dubrovnik, Croatia}, author = {Philipp Cimiano and Steffen Staab and Julien Tane}, booktitle = {Proceedings of the ECML / PKDD Workshop on Adaptive Text Extraction and Mining}, pages = {10--17}, year = 2003, url = {http://www.dcs.shef.ac.uk/~fabio/ATEM03/cimiano-ecml03-atem.pdf}, biburl = {http://www.bibsonomy.org/bibtex/2573ac0e71d6b1c369cf881ddda8c7841/dbenz}, keywords = {taxonomic_overlap ontology_learning} } @inbook{hotho2008bookmarking, title = {Social Bookmarking}, address = {München}, author = {Andreas Hotho}, booktitle = {Web 2.0 in der Unternehmenspraxis: Grundlagen, Fallstudien und Trends zum Einsatz von Social Software}, editor = {Andrea Back and Norbert Gronau and Klaus Tochtermann}, pages = {26-38}, publisher = {Oldenbourg Verlag}, year = 2008, url = {http://www.amazon.de/gp/redirect.html%3FASIN=3486585797%26tag=ws%26lcode=xm2%26cID=2025%26ccmID=165953%26location=/Web-2-0-Unternehmenspraxis-Grundlagen-Fallstudien/dp/3486585797%253FSubscriptionId=13CT5CVB80YFWJEPWS02}, ean = {9783486585797}, asin = {3486585797}, isbn = {9783486585797}, biburl = {http://www.bibsonomy.org/bibtex/2b54f6557893e3ab9d1eb83b0baeb136e/stumme}, keywords = {folksonomy social bookmarking} } @inproceedings{AlKhalifa:2007, title = {CoolRank: A Social Solution for Ranking Bookmarked Web Resources}, author = {H.S. Al-Khalifa}, booktitle = {Innovations in Information Technology, 2007. Innovations '07. 4th International Conference on}, pages = {208-212}, year = 2007, url = {http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4430482}, isbn = {978-1-4244-1841-1}, doi = {10.1109/IIT.2007.4430482}, description = {Welcome to IEEE Xplore 2.0: CoolRank: A Social Solution for Ranking Bookmarked Web Resources}, abstract = {Users tag resources for a variety of reasons and using a variety of conventions. The tags that they provide are stored in social bookmarking services, so these services can provide a rich gateway to a wide and interesting quantity of web resources. The cognitive effort that has gone into making these tags has presumably added value to the description of the resource. In this work we utilize the quantitative value of these tags for ranking bookmarked web resources in social bookmarking services. Our proposed solution is called CoolRank, a simple and intuitive model to rank bookmarked web resources in a social bookmarking service, such as del.icio.us. CoolRank makes use of both quantitative information, based on the number of people who have bookmarked a web resource, and subjective information, based on the words people have used in their tags.}, biburl = {http://www.bibsonomy.org/bibtex/24671fb1c606e3d7f559bb25d9b20e47d/hotho}, keywords = {2.0 folkrank ranking * web folksonomy toread} } @article{smith97moon, title = {Topography of the Moon from the Clementine lidar }, author = {David E. Smith and Maria T. Zuber and Gregory A. Neumann and Frank G. Lemoine}, journal = {JOURNAL OF GEOPHYSICAL RESEARCH}, number = {E 1}, pages = {1591-1611}, volume = 102, year = 1997, abstract = {Range measurements from the lidar instrument carried aboard the Clementine spacecraft have been used to produce an accurate global topographic model of the Moon. This paper discusses the function of the lidar; the acquisition, processing, and filtering of observations to produce a global topographic model; and the determination of parameters that define the fundamental shape of the Moon. Our topographic model; a 72nd degree and order spherical harmonic expansion of lunar radii, is designated Goddard Lunar Topography Model 2 (GLTM 2). This topographic field has an absolute vertical accuracy of approximately 100 m and a spatial resolution of 2.5°. The field shows that the Moon can be described as a sphere with maximum positive and negative deviations of ∼8 km, both occurring on the farside, in the areas of the Korolev and South Pole-Aitken (S.P.-Aitken) basins. The amplitude spectrum of the topography shows more power at longer wavelengths as compared to previous models, owing to more complete sampling of the surface, particularly the farside. A comparison of elevations derived from the Clementine lidar to control point elevations from the Apollo laser altimeters indicates that measured relative topographic heights generally agree to within ∼200 m over the maria. While the major axis of the lunar gravity field is aligned in the Earth-Moon direction, the major axis of topography is displaced from this line by approximately 10° to the east and intersects the farside 24° north of the equator. The magnitude of impact basin topography is greater than the lunar flattening (∼2 km) and equatorial ellipticity (∼800 m), which imposes a significant challenge to interpreting the lunar figure. The floors of mare basins are shown to lie close to an equipotential surface, while the floors of unflooded large basins, except for S.P.-Aitken, lie above this equipotential. The radii of basin floors are thus consistent with a hydrostatic mechanism for the absence of significant farside maria except for S.P.-Aitken, whose depth and lack of mare require significant internal compositional and/or thermal heterogeneity. A macroscale surface roughness map shows that roughness at length scales of 101–102 km correlates with elevation and surface age. }, biburl = {http://www.bibsonomy.org/bibtex/2be0039c7526f0cf3f4c27e1b7733296d/andreab}, keywords = {clementine moon lidar imported topography} } @inproceedings{IfrimTW-ICML2005, title = {Learning Word-to-Concept Mappings for Automatic Text Classification}, address = {Bonn, Germany}, author = {Georgiana Ifrim and Martin Theobald and Gerhard Weikum}, booktitle = {Proceedings of the 22nd International Conference on Machine Learning - Learning in Web Search (LWS 2005)}, editor = {Luc De Raedt and Stefan Wrobel}, pages = {18--26}, year = 2005, url = {http://www.mpi-inf.mpg.de/~ifrim/publications/icml-lws05.pdf}, isbn = {1-59593-180-5}, description = {D5 MPI-INF Publications: Proceedings Article: Learning Word-to-Concept Mappings for Automatic Text Classification}, biburl = {http://www.bibsonomy.org/bibtex/257f8241941ed979455c3dbb90893020f/hotho}, keywords = {text wordnet topic tc model classification concept} } @article{uzzi95collaboration, title = {Collaboration and Creativity: The Small World Problem}, author = {Brian Uzzi and Jarett Spiro}, journal = {American Journal of Sociology}, number = 2, pages = {447--504}, volume = 111, year = 2005, url = {http://www.kellogg.northwestern.edu/faculty/uzzi/ftp/uzzi's_research_papers/uzzi&spiroajs_smallworlds.pdf}, abstract = {Small world networks have received disproportionate notice in diverse fields because of their suspected effect on system dynamics. The authors analyzed the small world network of the creative artists who made Broadway musicals from 1945 to 1989. Using original arguments, new statistical methods, and tests of construct validity, they found that the varying “small world” properties of the systemic level network of these artists affected their creativity in terms of the financial and artistic performance of the musicals they produced. The small world network effect was parabolic; performance increased up to a threshold, after which point the positive effects reversed.}, biburl = {http://www.bibsonomy.org/bibtex/2e0743ca2e566e0a2745884f9a2189dbd/stumme}, keywords = {smallworld world small} } @inbook{hotho2008bookmarking, title = {Social Bookmarking}, address = {München}, author = {Andreas Hotho}, booktitle = {Web 2.0 in der Unternehmenspraxis: Grundlagen, Fallstudien und Trends zum Einsatz von Social Software}, editor = {Andrea Back and Norbert Gronau and Klaus Tochtermann}, pages = {26-38}, publisher = {Oldenbourg Verlag}, year = 2008, url = {http://www.amazon.de/gp/redirect.html%3FASIN=3486585797%26tag=ws%26lcode=xm2%26cID=2025%26ccmID=165953%26location=/Web-2-0-Unternehmenspraxis-Grundlagen-Fallstudien/dp/3486585797%253FSubscriptionId=13CT5CVB80YFWJEPWS02}, ean = {9783486585797}, asin = {3486585797}, isbn = {9783486585797}, biburl = {http://www.bibsonomy.org/bibtex/2b54f6557893e3ab9d1eb83b0baeb136e/hotho}, keywords = {2008 folksonomy social myown bookmarking} } @article{ecs15036, title = {The CKC Challenge: Exploring Tools for Collaborative Knowledge Construction}, author = {Natasha F. Noy and Abhita Chugh and Harith Alani}, journal = {IEEE Intelligent Systems}, month = {["lib/utils:month\verb1_115036" not defined]}, number = 1, publisher = {IEEE Computer Scociety}, volume = 23, year = 2008, url = {http://eprints.ecs.soton.ac.uk/15036/}, abstract = {Web 2.0?s great success is fueled mainly by an infrastructure that lets users easily create, share, tag, and connect content and knowledge. In general, the knowledge created in today?s applications for collaborative tagging, folksonomies, wikis, and so on is mostly unstructured: tags or wiki pages don?t have semantic links between them and usually aren?t related in any structured form. By contrast, ontologies, database schemas, and taxonomies usually contain explicit definitions of, and links between, their components, often with well-defined semantics. A new generation of tools supports the integration of Web 2.0 and Semantic Web approaches. Some of these tools - such as Semantic MediaWiki, BOWiki, and Platypus Wiki ? provide wiki extensions for creating semantic links between pages. Other tools let users organize tags in some semantic structure, and fully fledged ontology editors such as pOWL support the distributed and collaborative development of ontologies. Commercial tools such as Freebase are also entering the field. Most of these tools are in early development?the collaborative-knowledge-construction field is in its infancy. Few, if any, user studies outline what users expect from such tools and what does or doesn?t work. So, we organized the Collaborative Knowledge Construction Challenge. The CKC Challenge let users try different tools and provide feedback to help us assess the state of the art.}, biburl = {http://www.bibsonomy.org/bibtex/26e6476862232718bab862d83fbe998ac/harith}, keywords = {web2.0 collaborative ontology tagorapub} } @unpublished{fet07, title = {Infomation dynamics in web-based social systems}, author = {Vittorio Loreto and Ciro Cattuto and Andrea Baldassarri}, year = 2007, biburl = {http://www.bibsonomy.org/bibtex/25477948c69399262ef9dfa489191f48c/vittorio.loreto}, keywords = {baldassarri paper dynamics 2007 loreto systems information cattuto web position workshop social fet tagorapub} } @incollection{sleb07, title = {Complex systems approach to the emergence of language}, author = {A. Baronchelli and C. Cattuto and V. Loreto and A. Puglisi}, booktitle = {Language, Evolution and the Brain}, editor = {J. W. Minett & W. S-Y. Wang}, year = 2007, biburl = {http://www.bibsonomy.org/bibtex/2b5f5ffae5b1a52c77345881215824131/vittorio.loreto}, keywords = {loreto wang minett sleb emergence tagorapub puglisi systems cattuto baronchelli complex language 2007} } @article{heymann2007spam, title = {Fighting Spam on Social Web Sites: A Survey of Approaches and Future Challenges}, address = {Piscataway, NJ, USA}, author = {Paul Heymann and Georgia Koutrika and Hector Garcia-Molina}, journal = {IEEE Internet Computing}, number = 6, pages = {36--45}, publisher = {IEEE Educational Activities Department}, volume = 11, year = 2007, url = {http://portal.acm.org/citation.cfm?id=1304062.1304547&coll=GUIDE&dl=}, issn = {1089-7801}, doi = {http://dx.doi.org/10.1109/MIC.2007.125}, description = {Fighting Spam on Social Web Sites}, abstract = {In recent years, social Web sites have become important components of the Web. With their success, however, has come an increasing flux of spam. If left unchecked, spam threatens to undermine resource sharing, interactivity, and openness. The authors survey three categories of potential countermeasures: those based on detection, demotion, and prevention. Although many of these countermeasures have been proposed before for email and Web spam, the authors find that their applicability to social Web sites differs. How should we evaluate spam countermeasures for social Web sites, and what future challenges might we face?}, biburl = {http://www.bibsonomy.org/bibtex/23e0a8be9fb6fff102e6aed13d1db22f7/andreab}, keywords = {web heymann folksonomy spam social 2007} }