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<html><head><title>XSB Group - Research Projects </title></head>
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<img src = "work.gif"> This page is under construction.
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<H1>XSB Group - Interests and Research Projects</H1>
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Primarily we are extending and improving the XSB system.
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We are currently extending it to compute full SLG, i.e. to compute
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the well-founded semantics of programs. We are improving the tabling
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primitives, and intend to support subsumption testing for determining
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call and return redundancy. We are also exploring different
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scheduling strategies for XSB. Also we are looking into a parallel
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implementation of XSB, based on a new kind of parallelism we call
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table parallelism. Another area we are looking into is distributed
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evalution of queries under SLG. Something we want to explore is the
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integration of constraints into XSB, using a ``glass-box'' approach.
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We also are looking at global optimization of Datalog queries in XSB.
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All these topics revolve around exploring the implications of tabling
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in logic systems. We are strongly oriented toward implementing our
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theoretical ideas to determine their practicality.
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Here are some of our current projects:
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<li> Scheduling Strategies for Tabled Evaluations
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<li> Demand-based tabling evaluation