Search Results for author: Nicolo Colombo

Found 10 papers, 3 papers with code

On training locally adaptive CP

1 code implementation5 Jun 2023 Nicolo Colombo

We address the problem of making Conformal Prediction (CP) intervals locally adaptive.

Conformal Prediction Prediction Intervals +1

Differentiable Architecture Pruning for Transfer Learning

no code implementations7 Jul 2021 Nicolo Colombo, Yang Gao

We propose a new gradient-based approach for extracting sub-architectures from a given large model.

Transfer Learning

Adapting by Pruning: A Case Study on BERT

1 code implementation7 May 2021 Yang Gao, Nicolo Colombo, Wei Wang

Adapting pre-trained neural models to downstream tasks has become the standard practice for obtaining high-quality models.

Disentangling Neural Architectures and Weights: A Case Study in Supervised Classification

no code implementations11 Sep 2020 Nicolo Colombo, Yang Gao

To find the optimal weight-agnostic network, we use a novel and computationally efficient method that translates the hard architecture-search problem into a feasible optimization problem. More specifically, we look at the optimal task-specific architectures as the optimal configuration of binary networks with {0, 1}-valued weights, which can be found through an approximate gradient descent strategy.

General Classification

Training conformal predictors

no code implementations14 May 2020 Nicolo Colombo, Vladimir Vovk

Efficiency criteria for conformal prediction, such as \emph{observed fuzziness} (i. e., the sum of p-values associated with false labels), are commonly used to \emph{evaluate} the performance of given conformal predictors.

Binary Classification Conformal Prediction

Multiple Metric Learning for Structured Data

no code implementations13 Feb 2020 Nicolo Colombo

Main challenge is that metric constraints (especially positive-definiteness and sub-additivity), are not automatically respected if, for example, the coefficients of the linear combination are allowed to be negative.

Metric Learning

Counterfactual Distribution Regression for Structured Inference

no code implementations20 Aug 2019 Nicolo Colombo, Ricardo Silva, Soong M Kang, Arthur Gretton

The inference problem is how information concerning perturbations, with particular covariates such as location and time, can be generalized to predict the effect of novel perturbations.

counterfactual regression

Bayesian Semi-supervised Learning with Graph Gaussian Processes

2 code implementations NeurIPS 2018 Yin Cheng Ng, Nicolo Colombo, Ricardo Silva

We propose a data-efficient Gaussian process-based Bayesian approach to the semi-supervised learning problem on graphs.

Active Learning Gaussian Processes +1

A posteriori error bounds for joint matrix decomposition problems

no code implementations NeurIPS 2016 Nicolo Colombo, Nikos Vlassis

Joint matrix triangularization is often used for estimating the joint eigenstructure of a set M of matrices, with applications in signal processing and machine learning.

Approximate Joint Matrix Triangularization

no code implementations2 Jul 2016 Nicolo Colombo, Nikos Vlassis

The a priori bounds are theoretical inequalities that involve functions of the ground-truth matrices and noise matrices, whereas the a posteriori bounds are given in terms of observable quantities that can be computed from the input matrices.

Tensor Decomposition

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