Search Results for author: Tibério S. Caetano

Found 10 papers, 1 papers with code

Finito: A Faster, Permutable Incremental Gradient Method for Big Data Problems

3 code implementations10 Jul 2014 Aaron J. Defazio, Tibério S. Caetano, Justin Domke

Recent advances in optimization theory have shown that smooth strongly convex finite sums can be minimized faster than by treating them as a black box "batch" problem.

Learning as MAP Inference in Discrete Graphical Models

no code implementations NeurIPS 2012 Xianghang Liu, James Petterson, Tibério S. Caetano

Instead of relying on convex losses and regularisers such as in SVMs, logistic regression and boosting, or instead non-convex but continuous formulations such as those encountered in neural networks and deep belief networks, our framework entails a non-convex but \emph{discrete} formulation, where estimation amounts to finding a MAP configuration in a graphical model whose potential functions are low-dimensional discrete surrogates for the misclassification loss.

Binary Classification feature selection

A Convex Formulation for Learning Scale-Free Networks via Submodular Relaxation

no code implementations NeurIPS 2012 Aaron Defazio, Tibério S. Caetano

We consider the case where the structure of the graph to be reconstructed is known to be scale-free.

Submodular Multi-Label Learning

no code implementations NeurIPS 2011 James Petterson, Tibério S. Caetano

The key novelty of our formulation is that we explicitly allow for assortative (submodular) pairwise label interactions, i. e., we can leverage the co-ocurrence of pairs of labels in order to improve the quality of prediction.

Multi-Label Learning

Word Features for Latent Dirichlet Allocation

no code implementations NeurIPS 2010 James Petterson, Wray Buntine, Shravan M. Narayanamurthy, Tibério S. Caetano, Alex J. Smola

We extend Latent Dirichlet Allocation (LDA) by explicitly allowing for the encoding of side information in the distribution over words.

Reverse Multi-Label Learning

no code implementations NeurIPS 2010 James Petterson, Tibério S. Caetano

Multi-label classification is the task of predicting potentially multiple labels for a given instance.

Classification Document Classification +3

Multitask Learning without Label Correspondences

no code implementations NeurIPS 2010 Novi Quadrianto, James Petterson, Tibério S. Caetano, Alex J. Smola, S. V. N. Vishwanathan

We propose an algorithm to perform multitask learning where each task has potentially distinct label sets and label correspondences are not readily available.

Data Integration General Classification

Robust Near-Isometric Matching via Structured Learning of Graphical Models

no code implementations NeurIPS 2008 Alex J. Smola, Julian J. McAuley, Tibério S. Caetano

Models for near-rigid shape matching are typically based on distance-related features, in order to infer matches that are consistent with the isometric assumption.

Structured Prediction

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