Finding a path is harder than finding a tree

نویسنده

  • Christopher Meek
چکیده

I consider the problem of learning an optimal path graphical model from data and show the problem to be NP-hard for the maximum likelihood and minimum description length approaches and a Bayesian approach. This hardness result holds despite the fact that the problem is a restriction of the polynomially solvable problem of nding the optimal tree graphical model.

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عنوان ژورنال:
  • J. Artif. Intell. Res.

دوره 15  شماره 

صفحات  -

تاریخ انتشار 2001