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Handling implicit geographic evidence for geographic ir

Nuno Cardoso, Mário J. Silva, Diana Santos
2008 Proceeding of the 17th ACM conference on Information and knowledge mining - CIKM '08  
In this paper, we analyze the amount of implicit and explicit geographic evidence in newspaper documents, and measure its impact on geographic information retrieval by evaluating the performance of a retrieval  ...  However, some non-geographic names such as companies, monuments or sport events, may also provide indirect relevant evidence that can significantly contribute to the assignment of geographic scopes to  ...  Acknowledgements We would like to thank David Cruz and Sebastiano Vigna for modifying MG4J according to the experiment requirements, and Patrícia Sousa for performing the experiments.  ... 
doi:10.1145/1458082.1458291 dblp:conf/cikm/CardosoSS08 fatcat:gououkakfjdu7bx26cimocg2bu

Experiments with Geographic Evidence Extracted from Documents [chapter]

Nuno Cardoso, Patrícia Sousa, Mário J. Silva
2009 Lecture Notes in Computer Science  
For the 2008 participation at GeoCLEF, we focused on improving the extraction of geographic signatures from documents and optimising their use for GIR.  ...  The results show that the detection of explicit geographic named entities for including their terms in a tuned weighted index field significantly improves retrieval performance when compared to classic  ...  For future work, we plan to improve REMBRANDT's strategy for capturing implicit geographic evidence.  ... 
doi:10.1007/978-3-642-04447-2_117 fatcat:gzm3o7wmn5ehjjptsafj2jc7bm

The University of Lisbon at GeoCLEF 2006 [chapter]

Bruno Martins, Nuno Cardoso, Marcirio Silveira Chaves, Leonardo Andrade, Mário J. Silva
2007 Lecture Notes in Computer Science  
We focused on developing a better text annotation tool for geo-parsing the documents, handling both explicit geographic evidence (as given by placenames) and implicit geographic evidence (as given by monuments  ...  The query processing and geographic ranking approaches were redesigned to handle thematic and geographic criteria of each search in a non-segregation way.  ...  fields: text field, for standard term indexes, explicit local field, for geographic terms considered as explicit geographic evidence, and implicit local field, for geographic terms associated to the implicit  ... 
doi:10.1007/978-3-540-74999-8_127 fatcat:rlz7yf6axrafvnbqmg5xplw5dm

Page 501 of Mathematical Reviews Vol. , Issue 98A [page]

1998 Mathematical Reviews  
501 68T Artificial intelligence 98a:68165 68T27 03B60 03B70 68T30 Benferhat, Salem (F-TOUL3-IR; Toulouse); Dubois, Didier (F-TOUL3-IR; Toulouse); Prade, Henri (F-TOUL3-IR; Toulouse) Nonmonotonic reasoning  ...  (taken as implicit indeterminism).  ... 

Using the geographic scopes of web documents for contextual advertising

Ivo Anastácio, Bruno Martins, Pável Calado
2010 Proceedings of the 6th Workshop on Geographic Information Retrieval - GIR '10  
Experimental results attest for the adequacy of the proposed methods in each of the individual processing stages.  ...  ) retrieving ads relevant to the target page, using both textual contents and geographic scopes.  ...  Cai proposed the GeoVSM framework for geographic document retrieval, combining traditional IR heuristics with geographic similarity scores [4] .  ... 
doi:10.1145/1722080.1722103 dblp:conf/gir/AnastacioMC10 fatcat:np7mfzdlwbd7pfazxc5pahpaua

A General Geographical Probabilistic Factor Model for Point of Interest Recommendation

Bin Liu, Hui Xiong, Spiros Papadimitriou, Yanjie Fu, Zijun Yao
2015 IEEE Transactions on Knowledge and Data Engineering  
user check-in count data as implicit feedback for better POI recommendations.  ...  Finally, extensive experimental results on three real-world LBSN datasets (which differ in terms of user mobility, POI geographical distribution, implicit response data skewness, and user-POI observation  ...  The authors would like to thank the anonymous reviewers for their valuable comments and suggestions to improve the quality of the paper.  ... 
doi:10.1109/tkde.2014.2362525 fatcat:5eyarpctt5fwplbcdkeilr3mpq

Contextual Search: A Computational Framework

Massimo Melucci
2012 Foundations and Trends in Information Retrieval  
Information Retrieval (IR) to design systems which can effectively and efficiently constrain search within the boundaries given by context, thus transforming classical search into contextual search.  ...  The growing availability of data in electronic form, the expansion of the World Wide Web (WWW) and the accessibility of computational methods for large-scale data processing have allowed researchers in  ...  Sebastiani for inviting me to write this survey; Doug Oard for his great patience and encouragement; and three anonymous reviewers for their careful and thoughtful comments.  ... 
doi:10.1561/1500000023 fatcat:bjx5it7en5fapbg6fvbqs6e7jy

From Where to What: Metadata Sharing for Digital Photographs with Geographic Coordinates [chapter]

Mor Naaman, Andreas Paepcke, Hector Garcia-Molina
2003 Lecture Notes in Computer Science  
Participating photographs are enhanced with a geographic location stamp -the latitude and longitude where the photograph was taken.  ...  We describe LOCALE, a system that allows cooperating information systems to share labels for photographs.  ...  The center's staff was extremely helpful; we would especially like to thank Sean Fenton, Andrea Pazfrost and Lisa Mendelman for their efforts.  ... 
doi:10.1007/978-3-540-39964-3_14 fatcat:fiunytqmwnbotpzyyf7qevcwzq

Geographic Information Retrieval

Ross Purves, Christopher Jones
2011 SIGSPATIAL Special  
The scope includes, but is not limited to, geographic information systems.  ...  The SIGSPATIAL Special is the newsletter of the Association for Computing Machinery (ACM) Special Interest Group on Spatial Information (SIGSPATIAL).  ...  Acknowledgements I would like to thank Adam Rae for providing the figure for this paper, and Mor Naaman for providing critical feedback.  ... 
doi:10.1145/2047296.2047297 fatcat:npmfk7kdhrailfrgyyaszkj6wi

Implicit, Formal and Powerful Semantics in Geoinformation

Gloria Bordogna, Cristiano Fugazza, Paolo Acquaviva d'Aragona, Paola Carrara
2021 ISPRS International Journal of Geo-Information  
Then, we illustrate several case studies, following the categorization into implicit, formal, and powerful (i.e., soft) semantics depending on the kind of their input.  ...  Discovering events and accounting for geographic change are faced and fostered in [133] [134] [135] [136] , Handling places and moving object trajectories is dealt with in [70, 77, 90, 133, [137] [138  ...  Geographic Information Retrieval IGSN International Geo-Sampling Number IRS Information Retrieval System NDVI Normalized Difference Vegetation Index NER Named Entity Recognition PID Persistent  ... 
doi:10.3390/ijgi10050330 fatcat:tscz7fb6evbhdo7fw4lyf3i4yq

Exposure to novel coronavirus in patients on renal replacement therapy during the exponential phase of COVID-19 pandemic: survey of the Italian Society of Nephrology

Giuseppe Quintaliani, the Italian Society of Nephrology COVID-19 Research Group, Gianpaolo Reboldi, Anteo Di Napoli, Maurizio Nordio, Aurelio Limido, Filippo Aucella, Piergiorgio Messa, Giuliano Brunori
2020 JN. Journal of Nephrology (Milano. 1992)  
We used spatial epidemiology and geographical information systems to map SARS-CoV-2 spread among RRT patients in Italy.  ...  Infection risk and rates seems to differ substantially across regions, along geographical latitude, and by treatment modality.  ...  Claudia Valletta for her excellent secretarial assistance and for contributing to the survey data collection.  ... 
doi:10.1007/s40620-020-00794-1 pmid:32621109 pmcid:PMC7333370 fatcat:tlayq2bvzffopffrd7y7runetm

Geographic information retrieval in a mobile environment: evaluating the needs of mobile individuals

David Mountain, Andrew MacFarlane
2007 Journal of information science  
to their information needs have a strong geographic component.  ...  Next, four geographic post-query filters which are described which attempt to meet these needs.  ...  Acknowledgements Much of this research was inspired by the WebPark project, which for three years offered an incredibly rewarding environment in which to work, and the xxx author(s) xxx would like to express  ... 
doi:10.1177/0165551506075333 fatcat:xy2dxhbpdncjllihah2itkmhee

Global software development and collaboration

John Noll, Sarah Beecham, Ita Richardson
2010 ACM inroads  
technology, and knowledge sharing infrastructure to capture implicit knowledge and make it explicit.  ...  We found that the key barriers to collaboration are geographic, temporal, cultural, and linguistic distance; the primary solutions to overcoming these barriers include site visits, synchronous communication  ...  One approach to culture and language differences is to choose sites in culturally similar locations, for example America and Ire land [7, 45] .  ... 
doi:10.1145/1835428.1835445 fatcat:lqadbmauu5fvreq2irllf6ln6a

PAVAL: A location-aware virtual personal assistant for retrieving geolocated points of interest and location-based services

Lorenzo Massai, Paolo Nesi, Gianni Pantaleo
2019 Engineering applications of artificial intelligence  
queries, in order to estimate the information need and potential geographic references expressed by the users.  ...  In this paper, we propose Paval (Location-Aware Virtual Personal Assistant 2 ), a semantic assisting engine for suggesting local points of interest (POIs) and services by analyzing users' natural language  ...  Acknowledgments The authors would like to thank the MIUR Smart City national founding, Italy SCN_00112, the University of Florence, Italy and companies involved for co-founding in the Sii-Mobility project  ... 
doi:10.1016/j.engappai.2018.09.013 fatcat:kbrgdshkdzgzjo273gekepr4zq

Internet topology at the router and autonomous system level [article]

A. Vazquez, R. Pastor-Satorras, A. Vespignani
2002 arXiv   pre-print
Our findings are relevant for the development of more accurate Internet topology generators, which should include, along with the scale-free properties of the connectivity distribution, the hierarchical  ...  Erlebach for the help in the data collection process.  ...  The small world evidence is strenghtened by the empirical finding of clustering coefficients for the AS, AS+, and IR four orders of magnitude larger than the corresponding value for a random graph of the  ... 
arXiv:cond-mat/0206084v1 fatcat:gy6sgmq2rfedvajg2g2y7zsuwm
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