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 Giuseppe Psaila

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Average citations per article9.18
Citation Count413
Publication count45
Publication years1995-2017
Available for download13
Average downloads per article271.15
Downloads (cumulative)3,525
Downloads (12 Months)169
Downloads (6 Weeks)32
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45 results found Export Results: bibtexendnoteacmrefcsv

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1 published by ACM
August 2017 WI '17: Proceedings of the International Conference on Web Intelligence
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 2,   Downloads (12 Months): 32,   Downloads (Overall): 48

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The need for cross-analyzing JSON objects representing heterogeneous geo-referenced information coming from multiple sources, such as open data published on the Web by public administrations and crowd-sourced posts and images from social networks, is becoming common for studying, predicting and planning social dynamics. Nevertheless, although NoSQL databases have emerged as ...
Keywords: collections of JSONbjects, geo-tagged data sets, powerful spatial operators, query language for geographical analysis

2 published by ACM
July 2016 IDEAS '16: Proceedings of the 20th International Database Engineering & Applications Symposium
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 10,   Downloads (12 Months): 91,   Downloads (Overall): 91

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Mobile Social Media are gaining momentum in the broader context of Big Data Analytics, where the main issue is represented by the problem of extracting interesting and actionable knowledge from big data repositories. Mobile social media sources like Twitter and Instagram are indeed producing massive amounts of data (namely, posts) ...
Keywords: Big Data Analytics, Big Data Frameworks, Mobile Social Media

3
September 2015 MEDI 2015: Proceedings of the 5th International Conference on Model and Data Engineering - Volume 9344
Publisher: Springer-Verlag New York, Inc.
Bibliometrics:
Citation Count: 1

Tourists are an important asset for the economy of the regions they visit. The answer to the question "where do tourists actually go?" could be really useful for public administrators and local governments. In particular, they need to understand what tourists actually visit, where they actually spend nights, and so ...

4
September 2014 NGMAST '14: Proceedings of the 2014 Eighth International Conference on Next Generation Mobile Apps, Services and Technologies
Publisher: IEEE Computer Society
Bibliometrics:
Citation Count: 0

In this paper, we present IPSOS Assistance, a cloud enabled mobile application for indoor assisted living in case of emergency situations in indoor environments. Such an indoor emergency response application is aimed at giving people assistance in case of personal and environmental emergency (e.g., showing available escape routes in case ...
Keywords: Assisted living, indoor positioning, mobile-cloud

5
September 2013 MEDI 2013: Proceedings of the Third International Conference on Model and Data Engineering - Volume 8216
Publisher: Springer-Verlag New York, Inc.
Bibliometrics:
Citation Count: 0

The crowd can be an incredible source of information. In particular, this is true for reviews about products of any kind, freely provided by customers through specialized web sites. In other words, they are social knowledge , that can be exploited by other customers. The Hints From the Crowd HFC ...

6 published by ACM
August 2013 [email protected] '13: Proceedings of the 3rd International Workshop on Semantic Search Over the Web
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 2,   Downloads (12 Months): 8,   Downloads (Overall): 62

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In this paper we provide an overview of the Hints From the Crowd (HFC) project, whose main goal is to build a NoSQL database system for large collections of product reviews; the database is queried by expressing a natural language sentence; the result is a list of products ranked based ...

7
August 2013 DEXA 2013: Proceedings of the 24th International Conference on Database and Expert Systems Applications - Volume 8055
Publisher: Springer-Verlag
Bibliometrics:
Citation Count: 0

Can the crowd be a source of information? Is it possible to receive useful hints from comments, blogs and product reviews? In the era of Web 2.0, people are allowed to give their opinion about everything such as movies, hotels, etc.. These reviews are social knowledge , that can be ...

8 published by ACM
June 2012 ACM Transactions on the Web (TWEB): Volume 6 Issue 2, May 2012
Publisher: ACM
Bibliometrics:
Citation Count: 5
Downloads (6 Weeks): 2,   Downloads (12 Months): 42,   Downloads (Overall): 703

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The widespread diffusion of Web-based services provided by public and private organizations emphasizes the need for a flexible solution for protecting the information accessible through Web applications. A promising approach is represented by credential-based access control and trust management. However, although much research has been done and several proposals exist, ...
Keywords: Trust management, access control, relational databases

9
June 2012 Fuzzy Sets and Systems: Volume 196, June, 2012
Publisher: Elsevier North-Holland, Inc.
Bibliometrics:
Citation Count: 2

Geographic information retrieval (GIR) is nowadays a hot research issue that involves the management of uncertainty and imprecision and the modeling of user preferences and context. Indexing the geographic content of documents implies dealing with the ambiguity, synonymy and homonymy of geographic names in texts. On the other side, the ...
Keywords: Geographic footprint, Geographic information retrieval, Bipolar criteria evaluation, Context dependent spatial query, Fuzzy aggregation operators, Soft constraint

10
May 2012 Information Processing and Management: an International Journal: Volume 48 Issue 3, May, 2012
Publisher: Pergamon Press, Inc.
Bibliometrics:
Citation Count: 3

In this paper, we face the so called ''ranked list problem'' of Web searches, that occurs when users submit short requests to search engines. Generally, as a consequence of terms' ambiguity and polysemy, users engage long cycles of query reformulation in an attempt to capture relevant information in the top ...
Keywords: Novelty ranking, Web meta-searching, Personalized Web results ranking, Query disambiguation, Results clustering

11
October 2011 FQAS'11: Proceedings of the 9th international conference on Flexible Query Answering Systems
Publisher: Springer-Verlag
Bibliometrics:
Citation Count: 0

In this paper, we propose an approach based on the use of soft aggregation operators and multi-granular graphs for discovering and analyzing the results of Web searches, organized into granules of distinct resolution. This practice enables user-driven explorations of the topics retrieved in a search process on the Internet, being ...
Keywords: graph-based representation, web exploration, clustered web search results, soft aggregation operators

12 published by ACM
March 2010 SAC '10: Proceedings of the 2010 ACM Symposium on Applied Computing
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 0,   Downloads (12 Months): 1,   Downloads (Overall): 108

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Applications for Location-based Services (LBS) are becoming more and more popular. However, the continuous access to the wireless internet to get map tiles from servers can significantly affect the quality of the user experience, or might be too expensive. In this paper, we present SMaC, Spatial Map Caching , a ...
Keywords: caching techniques, client side caching, location based services, map services, retrieval of maps from the network

13
November 2009 FQAS '09: Proceedings of the 8th International Conference on Flexible Query Answering Systems
Publisher: Springer-Verlag
Bibliometrics:
Citation Count: 1

In this paper we propose a query disambiguation mechanism for query context focalization in a meta-search environment. Our methods start from a set of documents retrieved executing a query over a search engine and applies clustering in order to generate distinct homogeneous groups. Then, the following step is to compute ...

14
September 2009 WI-IAT '09: Proceedings of the 2009 IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology - Volume 03
Publisher: IEEE Computer Society
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 0,   Downloads (12 Months): 0,   Downloads (Overall): 25

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This paper describes Matrioshka GeoScent, a prototypal system able to answer uncertain location based queries submitted by a moving user. The user searches for georeferenced resources on the web, by entering topics keywords, and specify the uncertain spatio temporal condition on their location by specifying a time span. This last ...
Keywords: Location-Based Services, Web document queries, routing-based ranking

15
September 2009 WI-IAT '09: Proceedings of the 2009 IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology - Volume 03
Publisher: IEEE Computer Society
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 2,   Downloads (12 Months): 3,   Downloads (Overall): 36

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In this paper we propose a query disambiguation mechanism focalizing the query context by applying clustering to the results of a Web-search. The clusters are ranked to reflect a balance of their contents’ novelty and overall similarity with respect to the original query, and, from each of them, a disambiguated ...
Keywords: Web result clustering, query diambiguation, relevance feedback, novelty- similarity ranking

16
August 2009 Fuzzy Sets and Systems: Volume 160 Issue 15, August, 2009
Publisher: Elsevier North-Holland, Inc.
Bibliometrics:
Citation Count: 3

Location-based queries (LBQ) are becoming more and more useful in location-based services (LBSs) such as those provided through mobile phones, personal digital assistants (PDAs), and laptops. They are context aware since they support the access to information by taking into account the spatial context of the user when submitting the ...
Keywords: Uncertain location-based query, Location-based service, Possibility distribution, Soft spatial constraint

17 published by ACM
November 2008 MoMM '08: Proceedings of the 6th International Conference on Advances in Mobile Computing and Multimedia
Publisher: ACM
Bibliometrics:
Citation Count: 2
Downloads (6 Weeks): 1,   Downloads (12 Months): 2,   Downloads (Overall): 259

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This paper describes the architecture and the functionalities of a clustering search engine prototypal system, named Matrioshka , whose peculiarity is the flexibility of the interaction framework on which it is based. Specifically, in this paper we focus on the mobile version of the system. This framework has two main ...
Keywords: exploratory search, web documents, mobile application, search services, semantic searches, query languages, mobile applications and services

18 published by ACM
October 2008 CIKM '08: Proceedings of the 17th ACM conference on Information and knowledge management
Publisher: ACM
Bibliometrics:
Citation Count: 3
Downloads (6 Weeks): 1,   Downloads (12 Months): 3,   Downloads (Overall): 278

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We propose a novel conception language for exploring the results retrieved by several internet search services (like search engines) that cluster retrieved documents. The goal is to offer users a tool to discover relevant hidden relationships between clustered documents. The proposal is motivated by the observation that visualization paradigms, based ...
Keywords: query languages, search service, exploratory search, web documents

19
September 2008 DEXA '08: Proceedings of the 2008 19th International Conference on Database and Expert Systems Application
Publisher: IEEE Computer Society
Bibliometrics:
Citation Count: 1

Standardized main memory representation methods (DOM) are quite inadequate to represent large XML Documents, both in terms of space (necessary amount of memory) and,consequently, in time: it easily happens that it is not possible to load large XML documents in main memory. In this paper, we present Virtual DOM, a ...

20 published by ACM
March 2008 SAC '08: Proceedings of the 2008 ACM symposium on Applied computing
Publisher: ACM
Bibliometrics:
Citation Count: 2
Downloads (6 Weeks): 1,   Downloads (12 Months): 3,   Downloads (Overall): 211

Full text available: PDFPDF
Location-Based Spatial Queries (LBSQ) are becoming more and more useful in location-based services such as those provided by cell-phones, Wireless LAN and GPS technologies. They support the access to information resources by taking into account the spatial context of the user when submitting the query, and the spatial location of ...
Keywords: minkowski sum, uncertain location-based spatial queries



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