Search Results for author: Philippe Goulet Coulombe

Found 13 papers, 2 papers with code

From Reactive to Proactive Volatility Modeling with Hemisphere Neural Networks

1 code implementation27 Nov 2023 Philippe Goulet Coulombe, Mikael Frenette, Karin Klieber

We reinvigorate maximum likelihood estimation (MLE) for macroeconomic density forecasting through a novel neural network architecture with dedicated mean and variance hemispheres.

Maximally Machine-Learnable Portfolios

no code implementations8 Jun 2023 Philippe Goulet Coulombe, Maximilian Goebel

We develop a collaborative machine learning algorithm that optimizes portfolio weights so that the resulting synthetic security is maximally predictable.

Assessing and Comparing Fixed-Target Forecasts of Arctic Sea Ice: Glide Charts for Feature-Engineered Linear Regression and Machine Learning Models

1 code implementation21 Jun 2022 Francis X. Diebold, Maximilian Goebel, Philippe Goulet Coulombe

We use "glide charts" (plots of sequences of root mean squared forecast errors as the target date is approached) to evaluate and compare fixed-target forecasts of Arctic sea ice.

A Neural Phillips Curve and a Deep Output Gap

no code implementations8 Feb 2022 Philippe Goulet Coulombe

Also, HNN captures out-of-sample the 2021 upswing in inflation and attributes it first to an abrupt and sizable disanchoring of the expectations component, followed by a wildly positive gap starting from late 2020.

Slow-Growing Trees

no code implementations2 Mar 2021 Philippe Goulet Coulombe

Random Forest's performance can be matched by a single slow-growing tree (SGT), which uses a learning rate to tame CART's greedy algorithm.

regression

Can Machine Learning Catch the COVID-19 Recession?

no code implementations1 Mar 2021 Philippe Goulet Coulombe, Massimiliano Marcellino, Dalibor Stevanovic

Based on evidence gathered from a newly built large macroeconomic data set for the UK, labeled UK-MD and comparable to similar datasets for the US and Canada, it seems the most promising avenue for forecasting during the pandemic is to allow for general forms of nonlinearity by using machine learning (ML) methods.

BIG-bench Machine Learning

Time-Varying Parameters as Ridge Regressions

no code implementations1 Sep 2020 Philippe Goulet Coulombe

Time-varying parameters (TVPs) models are frequently used in economics to capture structural change.

How is Machine Learning Useful for Macroeconomic Forecasting?

no code implementations28 Aug 2020 Philippe Goulet Coulombe, Maxime Leroux, Dalibor Stevanovic, Stéphane Surprenant

This suggests that Machine Learning is useful for macroeconomic forecasting by mostly capturing important nonlinearities that arise in the context of uncertainty and financial frictions.

BIG-bench Machine Learning

To Bag is to Prune

no code implementations17 Aug 2020 Philippe Goulet Coulombe

It is notoriously difficult to build a bad Random Forest (RF).

Macroeconomic Data Transformations Matter

no code implementations4 Aug 2020 Philippe Goulet Coulombe, Maxime Leroux, Dalibor Stevanovic, Stéphane Surprenant

In a low-dimensional linear regression setup, considering linear transformations/combinations of predictors does not alter predictions.

The Macroeconomy as a Random Forest

no code implementations23 Jun 2020 Philippe Goulet Coulombe

I develop Macroeconomic Random Forest (MRF), an algorithm adapting the canonical Machine Learning (ML) tool to flexibly model evolving parameters in a linear macro equation.

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