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teaching:mfe:is [2014/02/19 15:19] ezimanyi [Publishing and Using Spatio-temporal Data on the Semantic Web] |
teaching:mfe:is [2014/03/25 12:44] svsummer [Efficient computation of simulation for structural indexing] |
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| Our laboratory performs collaborative research with Euranova R&D (http://euranova.eu/). The list of subjects proposed for this year by Euranova can be found | Our laboratory performs collaborative research with Euranova R&D (http://euranova.eu/). The list of subjects proposed for this year by Euranova can be found | ||
| - | {{:teaching:mfe:euranova_master_thesis_2013_2014.pdf|here}}. | + | {{:teaching:mfe:mt2014_euranova.pdf|here}} |
| These subject include topics on distributed graph processing, processing big data using Map/Reduce, cloud computing, and social networks. | These subject include topics on distributed graph processing, processing big data using Map/Reduce, cloud computing, and social networks. | ||
| * Contact : [[ezimanyi@ulb.ac.be|Esteban Zimanyi]] | * Contact : [[ezimanyi@ulb.ac.be|Esteban Zimanyi]] | ||
| + | ===== Structural compression of relational and semantic web databases ===== | ||
| - | ===== Efficient computation of simulation for structural indexing ===== | + | Recent research in database management systems at ULB has shown how to |
| + | theoretically construct succinct (compressed) representations for | ||
| + | relational databases and semantic web databases. The advantage of | ||
| + | these succinct representations is that they allow querying directly | ||
| + | *on the succinct representation*, without needing to consult the | ||
| + | underlying database. | ||
| - | Simulation and bisimulation are fundamental notions in computer science. They underlie many formal verification algorithms, and have recently been applied to the construction of indexing data structures for relational databases and the semantic web. | + | The goal of this thesis is to study scalable algorithms for |
| + | constructing the actual succinct representations. Some in-memory | ||
| + | algorithms are already known, but given the large size of typical | ||
| + | database, distributed and out-of-memory alternatives need to be found. | ||
| - | Essentially, a simulation or bisimulation is a relation on the nodes | ||
| - | of a graph. Unfortunately, however, while efficient main-memory | ||
| - | algorithms for computing whether two nodes are simulating or bisimulating exist, these algorithms fail when no the input graphs are too large to fit in main memory. | ||
| - | The goal of this thesis is to study, compare, and implement various | + | * Contact : [[stijn.vansummeren@ulb.ac.be|Stijn Vansummeren]] |
| - | approaches to computing simulation in an external memory setting, for | + | |
| - | the explicit purpose of using the implementation to efficiently construct | + | |
| - | simulation-based indexes for large relational databases and the | + | |
| - | semantic web. | + | |
| - | + | ||
| - | * Contact : [[stijn.vansummeren@ulb.ac.be|Stijn Vansummeren]] | + | |
| ===== Aspects of Text Analytics and Information Extraction ===== | ===== Aspects of Text Analytics and Information Extraction ===== | ||