Universidad de Chile

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Main State Institution in Public Higher Education, founded in 1842. Undergraduate, postgraduate and postgraduate studies, research and extension.

Classification based on Topological Data Analysis

Topological Data Analysis (TDA) is an emergent field that aims to discov...
02/07/2021 ∙ by Rolando Kindelan, et al. ∙ 125 ∙ share

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Predicting Unplanned Readmissions with Highly Unstructured Data

Deep learning techniques have been successfully applied to predict unpla...
03/19/2020 ∙ by Constanza Fierro, et al. ∙ 18 ∙ share

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Transformation Based Deep Anomaly Detection in Astronomical Images

In this work, we propose several enhancements to a geometric transformat...
05/15/2020 ∙ by Esteban Reyes, et al. ∙ 8 ∙ share

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Pattern Spotting in Historical Documents Using Convolutional Models

Pattern spotting consists of searching in a collection of historical doc...
06/20/2019 ∙ by Ignacio Úbeda, et al. ∙ 3 ∙ share

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Spectral Mixture Kernels for Multi-Output Gaussian Processes

Early approaches to multiple-output Gaussian processes (MOGPs) relied on...
09/05/2017 ∙ by Gabriel Parra, et al. ∙ 0 ∙ share

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Improving Sparsity in Kernel Adaptive Filters Using a Unit-Norm Dictionary

Kernel adaptive filters, a class of adaptive nonlinear time-series model...
07/13/2017 ∙ by Felipe Tobar, et al. ∙ 0 ∙ share

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Initialising Kernel Adaptive Filters via Probabilistic Inference

We present a probabilistic framework for both (i) determining the initia...
07/11/2017 ∙ by Iván Castro, et al. ∙ 0 ∙ share

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A review of learning vector quantization classifiers

In this work we present a review of the state of the art of Learning Vec...
09/23/2015 ∙ by David Nova, et al. ∙ 0 ∙ share

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Deep-HiTS: Rotation Invariant Convolutional Neural Network for Transient Detection

We introduce Deep-HiTS, a rotation invariant convolutional neural networ...
01/02/2017 ∙ by Guillermo Cabrera-Vives, et al. ∙ 0 ∙ share

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A Review of Feature Selection Methods Based on Mutual Information

In this work we present a review of the state of the art of information ...
09/24/2015 ∙ by Jorge R. Vergara, et al. ∙ 0 ∙ share

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Bayesian Causal Induction

Discovering causal relationships is a hard task, often hindered by the n...
11/03/2011 ∙ by Pedro A. Ortega, et al. ∙ 0 ∙ share

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Convergence of Bayesian Control Rule

Recently, new approaches to adaptive control have sought to reformulate ...
02/16/2010 ∙ by Pedro A. Ortega, et al. ∙ 0 ∙ share

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A conversion between utility and information

Rewards typically express desirabilities or preferences over a set of al...
11/26/2009 ∙ by Pedro A. Ortega, et al. ∙ 0 ∙ share

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A Bayesian Rule for Adaptive Control based on Causal Interventions

Explaining adaptive behavior is a central problem in artificial intellig...
11/26/2009 ∙ by Pedro A. Ortega, et al. ∙ 0 ∙ share

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Veamy: an extensible object-oriented C++ library for the virtual element method

This paper summarizes the development of Veamy, an object-oriented C++ l...
08/11/2017 ∙ by Alejandro Ortiz-Bernardin, et al. ∙ 0 ∙ share

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Organic Visualization of Document Evolution

Recent availability of data of writing processes at keystroke-granularit...
12/17/2017 ∙ by Ignacio Perez-Messina, et al. ∙ 0 ∙ share

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Text Indexing and Searching in Sublinear Time

We introduce the first index that can be built in o(n) time for a text o...
12/20/2017 ∙ by J. Ian Munro, et al. ∙ 0 ∙ share

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Approximating Geometric Knapsack via L-packings

We study the two-dimensional geometric knapsack problem (2DK) in which w...
11/21/2017 ∙ by Waldo Gálvez, et al. ∙ 0 ∙ share

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A Note on the Quasi-Stationary Distribution of the Shiryaev Martingale on the Positive Half-Line

We obtain a closed-form formula for the quasi-stationary distribution of...
11/14/2017 ∙ by Aleksey S. Polunchenko, et al. ∙ 0 ∙ share

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A Grammar Compression Algorithm based on Induced Suffix Sorting

We introduce GCIS, a grammar compression algorithm based on the induced ...
11/08/2017 ∙ by Daniel Saad Nogueira Nunes, et al. ∙ 0 ∙ share

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Depth Distribution in High Dimensions

Motivated by the analysis of range queries in databases, we introduce th...
05/29/2017 ∙ by Jérémy Barbay, et al. ∙ 0 ∙ share

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Strong Algorithms for the Ordinal Matroid Secretary Problem

In the ordinal Matroid Secretary Problem (MSP), elements from a weighted...
02/06/2018 ∙ by José A. Soto, et al. ∙ 0 ∙ share

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Two-Dimensional Block Trees

The Block Tree (BT) is a novel compact data structure designed to compre...
03/04/2018 ∙ by Nieves R. Brisaboa, et al. ∙ 0 ∙ share

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Compact Representations of Event Sequences

We introduce a new technique for the efficient management of large seque...
03/07/2018 ∙ by Nieves R. Brisaboa, et al. ∙ 0 ∙ share

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Learning non-Gaussian Time Series using the Box-Cox Gaussian Process

Gaussian processes (GPs) are Bayesian nonparametric generative models th...
03/19/2018 ∙ by Gonzalo Rios, et al. ∙ 0 ∙ share

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Universal Compressed Text Indexing

The rise of repetitive datasets has lately generated a lot of interest i...
03/26/2018 ∙ by Gonzalo Navarro, et al. ∙ 0 ∙ share

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Software Engineering for Millennials, by Millennials

Software engineers need to manage both technical and professional skills...
04/05/2018 ∙ by Jocelyn Simmonds, et al. ∙ 0 ∙ share

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IRT scoring and the principle of consistent order

IRT models are being increasingly used worldwide for test construction a...
04/24/2018 ∙ by Nancy Lacourly, et al. ∙ 0 ∙ share

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Computing Coverage Kernels Under Restricted Settings

We consider the Minimum Coverage Kernel problem: given a set B of d-dime...
05/11/2018 ∙ by Jérémy Barbay, et al. ∙ 0 ∙ share

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Quasi-polynomial time approximation schemes for packing and covering problems in planar graphs

We consider two optimization problems in planar graphs. In Maximum Weigh...
07/19/2018 ∙ by Michał Pilipczuk, et al. ∙ 0 ∙ share

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Bayesian Nonparametric Spectral Estimation

Spectral estimation (SE) aims to identify how the energy of a signal (e....
09/06/2018 ∙ by Felipe Tobar, et al. ∙ 0 ∙ share

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Interactive Learning with Corrective Feedback for Policies based on Deep Neural Networks

Deep Reinforcement Learning (DRL) has become a powerful strategy to solv...
09/30/2018 ∙ by Rodrigo Pérez-Dattari, et al. ∙ 0 ∙ share

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Relative compression of trajectories

We present RCT, a new compact data structure to represent trajectories o...
10/12/2018 ∙ by Nieves R. Brisaboa, et al. ∙ 0 ∙ share

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Prophet Inequalities for Independent Random Variables from an Unknown Distribution

A central object in optimal stopping theory is the single-choice prophet...
11/14/2018 ∙ by José R. Correa, et al. ∙ 0 ∙ share

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Visual SLAM-based Localization and Navigation for Service Robots: The Pepper Case

We propose a Visual-SLAM based localization and navigation system for se...
11/20/2018 ∙ by Cristopher Gómez, et al. ∙ 0 ∙ share

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Towards Long-Term Memory for Social Robots: Proposing a New Challenge for the RoboCup@Home League

Long-term memory is essential to feel like a continuous being, and to be...
11/27/2018 ∙ by Matías Pavez, et al. ∙ 0 ∙ share

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Playing Soccer without Colors in the SPL: A Convolutional Neural Network Approach

The goal of this paper is to propose a vision system for humanoid roboti...
11/29/2018 ∙ by Francisco Leiva, et al. ∙ 0 ∙ share

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On the Turing Completeness of Modern Neural Network Architectures

Alternatives to recurrent neural networks, in particular, architectures ...
01/10/2019 ∙ by Jorge Pérez, et al. ∙ 0 ∙ share

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Faster Repetition-Aware Compressed Suffix Trees based on Block Trees

Suffix trees are a fundamental data structure in stringology, but their ...
02/08/2019 ∙ by Manuel Cáceres, et al. ∙ 0 ∙ share

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Fast, Small, and Simple Document Listing on Repetitive Text Collections

Document listing on string collections is the task of finding all docume...
02/20/2019 ∙ by Dustin Cobas, et al. ∙ 0 ∙ share

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On the extension complexity of scheduling

Linear programming is a powerful method in combinatorial optimization wi...
02/27/2019 ∙ by Hans Raj Tiwary, et al. ∙ 0 ∙ share

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A More General Theory of Static Approximations for Conjunctive Queries

Conjunctive query (CQ) evaluation is NP-complete, but becomes tractable ...
04/01/2019 ∙ by Pablo Barceló, et al. ∙ 0 ∙ share

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Negative Prices in Network Pricing Games

In a Stackelberg network pricing game, a leader sets prices for a given ...
04/18/2019 ∙ by Andrés Cristi, et al. ∙ 0 ∙ share

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Computational Complexity of Restricted Diffusion Limited Aggregation

We introduce a restricted version of the Diffusion Limited Aggregation (...
04/22/2019 ∙ by Nicolas Bitar, et al. ∙ 0 ∙ share

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Approximate Normalization for Gradual Dependent Types

Dependent types help programmers write highly reliable code. However, th...
06/15/2019 ∙ by Joseph Eremondi, et al. ∙ 0 ∙ share

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Compositionally-Warped Gaussian Processes

The Gaussian process (GP) is a nonparametric prior distribution over fun...
06/23/2019 ∙ by Felipe Tobar, et al. ∙ 0 ∙ share

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A nodal integration scheme for meshfree Galerkin methods using the virtual element decomposition

In this paper, we present a novel nodal integration scheme for meshfree ...
06/30/2019 ∙ by R. Silva-Valenzuela, et al. ∙ 0 ∙ share

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An Index for Sequencing Reads Based on The Colored de Bruijn Graph

In this article, we show how to transform a colored de Bruijn graph (dBG...
08/06/2019 ∙ by Diego Díaz-Domínguez, et al. ∙ 0 ∙ share

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Note on distributed certification of minimum spanning trees

A distributed proof (also known as local certification, or proof-labelin...
09/16/2019 ∙ by Laurent Feuilloley, et al. ∙ 0 ∙ share

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An Introduction to Quaternion-Valued Recurrent Projection Neural Networks

Hypercomplex-valued neural networks, including quaternion-valued neural ...
09/19/2019 ∙ by Marcos Eduardo Valle, et al. ∙ 0 ∙ share

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