Christopher Pinchak

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A practical problem faced by users of highperformance computers is: How can I automatically load balance my jobs across different batch queues, which are in different administrative domains, if there is no existing grid infrastructure? It is common to have user accounts for a number of individual high-performance systems (e.g., departmental, university,(More)
All questions are implicitly associated with an expected answer type. Unlike previous approaches that require a predefined set of question types, we present a method for dynamically constructing a probability-based answer type model for each different question. Our model evaluates the appropriateness of a potential answer by the probability that it fits(More)
On November 4, 2002, a Canada-wide virtual supercomputer gave a chemistry research team the opportunity to do several years worth of computing in a single day. This experiment, called CISS-1 (Canadian Internetworked Scientific Supercomputer), had three research impacts: (1) in partnership with C3.ca, created a new precedent for cooperation among Canadian(More)
An important part of question answering is ensuring a candidate answer is plausible as a response. We present a flexible approach based on discriminative preference ranking to determine which of a set of candidate answers are appropriate. Discriminative methods provide superior performance while at the same time allow the flexibility of adding new and(More)
We introduce an answer typing strategy specific to quantifiable how questions. Using the web as a data source, we automatically collect answer units appropriate to a given how-question type. Experimental results show answer typing with these units outperforms traditional fixedcategory answer typing and other strategies based on the occurrences of numerical(More)
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