Search Results for author: David Salinas

Found 20 papers, 8 papers with code

Obeying the Order: Introducing Ordered Transfer Hyperparameter Optimisation

1 code implementation29 Jun 2023 Sigrid Passano Hellan, Huibin Shen, François-Xavier Aubet, David Salinas, Aaron Klein

We introduce ordered transfer hyperparameter optimisation (OTHPO), a version of transfer learning for hyperparameter optimisation (HPO) where the tasks follow a sequential order.

Movie Recommendation Recommendation Systems +1

Optimizing Hyperparameters with Conformal Quantile Regression

1 code implementation5 May 2023 David Salinas, Jacek Golebiowski, Aaron Klein, Matthias Seeger, Cedric Archambeau

Many state-of-the-art hyperparameter optimization (HPO) algorithms rely on model-based optimizers that learn surrogate models of the target function to guide the search.

Gaussian Processes Hyperparameter Optimization +1

Criteria for Classifying Forecasting Methods

no code implementations7 Dec 2022 Tim Januschowski, Jan Gasthaus, Yuyang Wang, David Salinas, Valentin Flunkert, Michael Bohlke-Schneider, Laurent Callot

Classifying forecasting methods as being either of a "machine learning" or "statistical" nature has become commonplace in parts of the forecasting literature and community, as exemplified by the M4 competition and the conclusion drawn by the organizers.

Multi-Objective Model Selection for Time Series Forecasting

no code implementations17 Feb 2022 Oliver Borchert, David Salinas, Valentin Flunkert, Tim Januschowski, Stephan Günnemann

By learning a mapping from forecasting models to performance metrics, we show that our method PARETOSELECT is able to accurately select models from the Pareto front -- alleviating the need to train or evaluate many forecasting models for model selection.

Model Selection Time Series +1

Meta-Forecasting by combining Global Deep Representations with Local Adaptation

no code implementations5 Nov 2021 Riccardo Grazzi, Valentin Flunkert, David Salinas, Tim Januschowski, Matthias Seeger, Cedric Archambeau

While classical time series forecasting considers individual time series in isolation, recent advances based on deep learning showed that jointly learning from a large pool of related time series can boost the forecasting accuracy.

Meta-Learning Time Series +1

Multi-objective Asynchronous Successive Halving

2 code implementations23 Jun 2021 Robin Schmucker, Michele Donini, Muhammad Bilal Zafar, David Salinas, Cédric Archambeau

Hyperparameter optimization (HPO) is increasingly used to automatically tune the predictive performance (e. g., accuracy) of machine learning models.

Fairness Hyperparameter Optimization +3

A multi-objective perspective on jointly tuning hardware and hyperparameters

no code implementations10 Jun 2021 David Salinas, Valerio Perrone, Olivier Cruchant, Cedric Archambeau

In three benchmarks where hardware is selected in addition to hyperparameters, we obtain runtime and cost reductions of at least 5. 8x and 8. 8x, respectively.

AutoML Transfer Learning

Symbol-Shift Equivariant Neural Networks

no code implementations1 Jan 2021 David Salinas, Hady Elsahar

Neural networks have been shown to have poor compositionality abilities: while they can produce sophisticated output given sufficient data, they perform patchy generalization and fail to generalize to new symbols (e. g. switching a name in a sentence by a less frequent one or one not seen yet).

Question Answering Sentence +1

The Effectiveness of Discretization in Forecasting: An Empirical Study on Neural Time Series Models

no code implementations20 May 2020 Stephan Rabanser, Tim Januschowski, Valentin Flunkert, David Salinas, Jan Gasthaus

In particular, we investigate the effectiveness of several forms of data binning, i. e. converting real-valued time series into categorical ones, when combined with feed-forward, recurrent neural networks, and convolution-based sequence models.

Time Series Time Series Analysis

High-Dimensional Multivariate Forecasting with Low-Rank Gaussian Copula Processes

2 code implementations NeurIPS 2019 David Salinas, Michael Bohlke-Schneider, Laurent Callot, Roberto Medico, Jan Gasthaus

Predicting the dependencies between observations from multiple time series is critical for applications such as anomaly detection, financial risk management, causal analysis, or demand forecasting.

Anomaly Detection Management +3

A Quantile-based Approach for Hyperparameter Transfer Learning

no code implementations ICML 2020 David Salinas, Huibin Shen, Valerio Perrone

In this work, we introduce a novel approach to achieve transfer learning across different \emph{datasets} as well as different \emph{objectives}.

Bayesian Optimization Hyperparameter Optimization +3

A Copula approach for hyperparameter transfer learning

no code implementations25 Sep 2019 David Salinas, Huibin Shen, Valerio Perrone

In this work, we introduce a novel approach to achieve transfer learning across different datasets as well as different metrics.

Bayesian Optimization Thompson Sampling +1

DeepAR: Probabilistic Forecasting with Autoregressive Recurrent Networks

19 code implementations13 Apr 2017 David Salinas, Valentin Flunkert, Jan Gasthaus

Probabilistic forecasting, i. e. estimating the probability distribution of a time series' future given its past, is a key enabler for optimizing business processes.

Multivariate Time Series Forecasting Probabilistic Time Series Forecasting +1

Bayesian Intermittent Demand Forecasting for Large Inventories

no code implementations NeurIPS 2016 Matthias W. Seeger, David Salinas, Valentin Flunkert

We present a scalable and robust Bayesian method for demand forecasting in the context of a large e-commerce platform, paying special attention to intermittent and bursty target statistics.

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