Papers by Mauro Fernando Calderon San Martin
Springer eBooks, 2009
As social networks are becoming ubiquitous on the Web, the Semantic Web goals indicate that it is... more As social networks are becoming ubiquitous on the Web, the Semantic Web goals indicate that it is critical to have a standard model allowing exchange, interoperability, transformation, and querying of social network data. In this paper we show that RDF/SPARQL meet this desiderata. Building on developments of social network analysis, graph databases and Semantic Web, we present a social networks data model based on RDF, and a query and transformation language based on SPARQL meeting the above requirements. We study its expressive power and complexity showing that it behaves well, and present an illustrative prototype.
Abstract Social networks (SN) data has become ubiquitious. SN data is produced in different place... more Abstract Social networks (SN) data has become ubiquitious. SN data is produced in different places, in different forms, in different formats, for different purposes. At personal scale the researcher and the user need to identify relevant pieces of data, build out of them desired networks, and transform them for different purposes. This process requires the availability of techniques and tools for data collection and integration, visualization, recording of provenance, filtering, structured querying, etc. In this paper we present a data ...
FIE '98. 28th Annual Frontiers in Education Conference. Moving from 'Teacher-Centered' to 'Learner-Centered' Education. Conference Proceedings (Cat. No.98CH36214)
ABSTRACT Summary form only given. AESOP (An Electronic Student Observatory Project) is a collecti... more ABSTRACT Summary form only given. AESOP (An Electronic Student Observatory Project) is a collection of computer-based data collection tools for instruction and research in computer science education. Our educational environment is one in which 5000 students study independently at a distance, off-line, using software developed for an entry-level, distance education course in computing. Each student is allocated an academic tutor whose job is to support the student by answering queries and by commenting on and grading assignments. Students and tutors interact primarily through e-mail. The aim of the project is to observe these students unobtrusively, electronically, and automatically, and to record the observations in a manner that is useful for both instruction and research. The important objectives for the recorder are that it must create a transcript short enough to be sent via e-mail (by students who pay phone charges), readable both by humans and automated analysis tools, and replayable, so that the student's session can be reproduced on an observer's computer. These sometimes conflicting objectives have led to interesting implementation issues, which are discussed in the paper, which also gives a full description of the recorder and associated replayer
Lecture Notes in Computer Science, 2009
As social networks are becoming ubiquitous on the Web, the Semantic Web goals indicate that it is... more As social networks are becoming ubiquitous on the Web, the Semantic Web goals indicate that it is critical to have a standard model allowing exchange, interoperability, transformation, and querying of social network data. In this paper we show that RDF/SPARQL meet this desiderata. Building on developments of social network analysis, graph databases and Semantic Web, we present a social networks data model based on RDF, and a query and transformation language based on SPARQL meeting the above requirements. We study its expressive power and complexity showing that it behaves well, and present an illustrative prototype.
2009 International Conference on Computational Science and Engineering, 2009
Abstract Social networks (SN) data has become ubiquitious. SN data is produced in different place... more Abstract Social networks (SN) data has become ubiquitious. SN data is produced in different places, in different forms, in different formats, for different purposes. At personal scale the researcher and the user need to identify relevant pieces of data, build out of them desired networks, and transform them for different purposes. This process requires the availability of techniques and tools for data collection and integration, visualization, recording of provenance, filtering, structured querying, etc. In this paper we present a data ...
cities
Social Network (SN) data has become ubiquitous, demanding advanced and flexible means to represen... more Social Network (SN) data has become ubiquitous, demanding advanced and flexible means to represent, transform and query such data. In addition to the intrinsic challenges of querying graph data is the requirement that networks be restructured, and thus that new values be created. To address these, we introduce a dedicated data model and query language, SNQL, founded on previous research on graph databases and on the experience of SN researchers. Technically, it is based in GraphLog and second-order tuple generating dependencies, allowing expressiveness for graph querying and node creation as required by SN, while keeping the complexity of query evaluation in NLOGSPACE.
This report presents the Social Networks Query Language (SNQL) the query and transformation langu... more This report presents the Social Networks Query Language (SNQL) the query and transformation language of the Social Networks Data Model (SNDM). The SNDM is a database model for the management of social networks data. This model provides a data structure to represent and store social networks, and a language to query and transform social networks (SNQL). SNQL is inspired in data management practices from social networks analysis (SNA) practice, and from the needs that arise in the management of ...
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Papers by Mauro Fernando Calderon San Martin