Models of Co-occurrence
<|reference_start|>Models of Co-occurrence: A model of co-occurrence in bitext is a boolean predicate that indicates whether a given pair of word tokens co-occur in corresponding regions of the bitext space. Co-occurrence is a precondition for the possibility that two tokens might be mutual translations. Models of co-occurrence are the glue that binds methods for mapping bitext correspondence with methods for estimating translation models into an integrated system for exploiting parallel texts. Different models of co-occurrence are possible, depending on the kind of bitext map that is available, the language-specific information that is available, and the assumptions made about the nature of translational equivalence. Although most statistical translation models are based on models of co-occurrence, modeling co-occurrence correctly is more difficult than it may at first appear.<|reference_end|>
@article{melamed1998models,
    title={Models of Co-occurrence},
    author={I. Dan Melamed (University of Pennsylvania)},
    journal={arXiv preprint arXiv:cmp-lg/9805003},
    year={1998},
    number={IRCS TR #98-05},
    archivePrefix={arXiv},
    eprint={cmp-lg/9805003},
    primaryClass={cmp-lg cs.CL}
}