Abstract
Factorization Machines (FMs) are a widely used
method for efficiently using high-order feature interactions in classification and regression tasks. Unfortunately, despite increasing interests in FMs, existing work only considers high order information
of the input features which limits their capacities
in non-linear problems and fails to capture the underlying structures of more complex data. In this
work, we present a novel Locally Linear Factorization Machines (LLFM) which overcomes this limitation by exploring local coding technique. Unlike existing local coding classifiers that involve a
phase of unsupervised anchor point learning and
predefined local coding scheme which is suboptimal as the class label information is not exploited
in discovering the encoding and thus can result in
a suboptimal encoding for prediction, we formulate a joint optimization over the anchor points, local coding coordinates and FMs variables to minimize classification or regression risk. Empirically,
we demonstrate that our approach achieves much
better predictive accuracy than other competitive
methods which employ LLFM with unsupervised
anchor point learning and predefined local coding
scheme.