Complexity Parameters for First-Order Classes [chapter]

Marta Arias, Roni Khardon
2003 Lecture Notes in Computer Science  
We study several complexity parameters for first order formulas and their suitability for first order learning models. We show that the standard notion of size is not captured by sets of parameters that are used in the literature and thus they cannot give a complete characterization in terms of learnability with polynomial resources. We then identify an alternative notion of size and a simple set of parameters that are useful in this sense. Matching lower bounds derived using the Vapnik
more » ... nkis dimension complete the picture showing that these parameters are indeed crucial.
doi:10.1007/978-3-540-39917-9_4 fatcat:r3bnlglvbzhhpowit3u4v6z2ey