Search Results for author: Filipe Rodrigues

Found 35 papers, 16 papers with code

Bayesian Active Learning for Censored Regression

no code implementations19 Feb 2024 Frederik Boe Hüttel, Christoffer Riis, Filipe Rodrigues, Francisco Câmara Pereira

To address this, we derive the entropy and the mutual information for censored distributions and derive the BALD objective for active learning in censored regression ($\mathcal{C}$-BALD).

Active Learning regression

Arrival Time Prediction for Autonomous Shuttle Services in the Real World: Evidence from Five Cities

no code implementations10 Jan 2024 Carolin Schmidt, Mathias Tygesen, Filipe Rodrigues

Finally, we identify dwell time prediction as the key determinant in overall AT prediction accuracy when autonomous shuttles are deployed in low-traffic areas or under regulatory speed limits.

Decision Making Model Selection

Deep Evidential Learning for Bayesian Quantile Regression

no code implementations21 Aug 2023 Frederik Boe Hüttel, Filipe Rodrigues, Francisco Câmara Pereira

The proposed method is based on evidential learning, which allows the model to capture aleatoric and epistemic uncertainty with a single deterministic forward-pass model.

Disentanglement regression +1

Graph Reinforcement Learning for Network Control via Bi-Level Optimization

1 code implementation16 May 2023 Daniele Gammelli, James Harrison, Kaidi Yang, Marco Pavone, Filipe Rodrigues, Francisco C. Pereira

Optimization problems over dynamic networks have been extensively studied and widely used in the past decades to formulate numerous real-world problems.

reinforcement-learning

Railway Network Delay Evolution: A Heterogeneous Graph Neural Network Approach

no code implementations27 Mar 2023 Zhongcan Li, Ping Huang, Chao Wen, Filipe Rodrigues

This paper aims to develop a heterogeneous graph neural network (HetGNN) model, which can address different types of nodes (i. e., heterogeneous nodes), to investigate the train delay evolution on railway networks.

Decision Making

Learning to Control Autonomous Fleets from Observation via Offline Reinforcement Learning

2 code implementations28 Feb 2023 Carolin Schmidt, Daniele Gammelli, Francisco Camara Pereira, Filipe Rodrigues

Autonomous Mobility-on-Demand (AMoD) systems are an evolving mode of transportation in which a centrally coordinated fleet of self-driving vehicles dynamically serves travel requests.

Offline RL reinforcement-learning +1

Mind the Gap: Modelling Difference Between Censored and Uncensored Electric Vehicle Charging Demand

1 code implementation16 Jan 2023 Frederik Boe Hüttel, Filipe Rodrigues, Francisco Câmara Pereira

As a result, machine learning models that rely on these observed records for forecasting charging demand may be limited in their application in future infrastructure expansion and supply management, as they do not estimate the true demand for charging.

Management

Context-aware Bayesian Mixed Multinomial Logit Model

no code implementations11 Oct 2022 Mirosława Łukawska, Anders Fjendbo Jensen, Filipe Rodrigues

This paper proposes an effective approach to model context-dependent intra-respondent heterogeneity, thereby introducing the concept of the Context-aware Bayesian mixed multinomial logit model, where a neural network maps contextual information to interpretable shifts in the preference parameters of each individual in each choice occasion.

Representation learning of rare temporal conditions for travel time prediction

no code implementations9 Aug 2022 Niklas Petersen, Filipe Rodrigues, Francisco Pereira

We present a vector-space model for encoding rare temporal conditions, that allows coherent representation learning across different temporal conditions.

Representation Learning Time Series +1

On the importance of stationarity, strong baselines and benchmarks in transport prediction problems

1 code implementation6 Mar 2022 Filipe Rodrigues

Over the last years, the transportation community has witnessed a tremendous amount of research contributions on new deep learning approaches for spatio-temporal forecasting.

Spatio-Temporal Forecasting

Graph Meta-Reinforcement Learning for Transferable Autonomous Mobility-on-Demand

1 code implementation15 Feb 2022 Daniele Gammelli, Kaidi Yang, James Harrison, Filipe Rodrigues, Francisco C. Pereira, Marco Pavone

Autonomous Mobility-on-Demand (AMoD) systems represent an attractive alternative to existing transportation paradigms, currently challenged by urbanization and increasing travel needs.

Meta Reinforcement Learning reinforcement-learning +1

Unboxing the graph: Neural Relational Inference for Mobility Prediction

1 code implementation25 Jan 2022 Mathias Niemann Tygesen, Francisco C. Pereira, Filipe Rodrigues

Our approach has several advantages: 1) a Variational Auto Encoder structure allows for the graph to be dynamically determined by the data, potentially changing through time; 2) the encoder structure allows the use of external data in the generation of the graph; 3) it is possible to place Bayesian priors on the generated graphs to encode domain knowledge.

Management

Predictive and Prescriptive Performance of Bike-Sharing Demand Forecasts for Inventory Management

1 code implementation28 Jul 2021 Daniele Gammelli, Yihua Wang, Dennis Prak, Filipe Rodrigues, Stefan Minner, Francisco Camara Pereira

Bike-sharing systems are a rapidly developing mode of transportation and provide an efficient alternative to passive, motorized personal mobility.

Decision Making Management

Graph Neural Network Reinforcement Learning for Autonomous Mobility-on-Demand Systems

1 code implementation23 Apr 2021 Daniele Gammelli, Kaidi Yang, James Harrison, Filipe Rodrigues, Francisco C. Pereira, Marco Pavone

Autonomous mobility-on-demand (AMoD) systems represent a rapidly developing mode of transportation wherein travel requests are dynamically handled by a coordinated fleet of robotic, self-driving vehicles.

Decision Making reinforcement-learning +1

Short-term bus travel time prediction for transfer synchronization with intelligent uncertainty handling

no code implementations14 Apr 2021 Niklas Christoffer Petersen, Anders Parslov, Filipe Rodrigues

This paper presents two novel approaches for uncertainty estimation adapted and extended for the multi-link bus travel time problem.

Prediction Intervals

Modeling Censored Mobility Demand through Quantile Regression Neural Networks

no code implementations2 Apr 2021 Frederik Boe Hüttel, Inon Peled, Filipe Rodrigues, Francisco C. Pereira

We address this gap by extending current Censored Quantile Regression models to learn multiple quantiles at once and apply these to synthetic baseline datasets and datasets from two shared mobility providers in the Copenhagen metropolitan area in Denmark.

Decision Making regression

Gaussian Process Latent Class Choice Models

no code implementations28 Jan 2021 Georges Sfeir, Filipe Rodrigues, Maya Abou-Zeid

We present a Gaussian Process - Latent Class Choice Model (GP-LCCM) to integrate a non-parametric class of probabilistic machine learning within discrete choice models (DCMs).

Discrete Choice Models Gaussian Processes

Generalized Multi-Output Gaussian Process Censored Regression

1 code implementation10 Sep 2020 Daniele Gammelli, Kasper Pryds Rolsted, Dario Pacino, Filipe Rodrigues

When modelling censored observations, a typical approach in current regression methods is to use a censored-Gaussian (i. e. Tobit) model to describe the conditional output distribution.

regression Stochastic Optimization

Semi-nonparametric Latent Class Choice Model with a Flexible Class Membership Component: A Mixture Model Approach

no code implementations6 Jul 2020 Georges Sfeir, Maya Abou-Zeid, Filipe Rodrigues, Francisco Camara Pereira, Isam Kaysi

The proposed model formulates the latent classes using mixture models as an alternative approach to the traditional random utility specification with the aim of comparing the two approaches on various measures including prediction accuracy and representation of heterogeneity in the choice process.

Clustering Discrete Choice Models

Recurrent Flow Networks: A Recurrent Latent Variable Model for Density Modelling of Urban Mobility

1 code implementation ICML Workshop INNF 2021 Daniele Gammelli, Filipe Rodrigues

Mobility-on-demand (MoD) systems represent a rapidly developing mode of transportation wherein travel requests are dynamically handled by a coordinated fleet of vehicles.

Variational Inference

Scaling Bayesian inference of mixed multinomial logit models to very large datasets

no code implementations11 Apr 2020 Filipe Rodrigues

Variational inference methods have been shown to lead to significant improvements in the computational efficiency of approximate Bayesian inference in mixed multinomial logit models when compared to standard Markov-chain Monte Carlo (MCMC) methods without compromising accuracy.

Bayesian Inference Computational Efficiency +1

Estimating Latent Demand of Shared Mobility through Censored Gaussian Processes

1 code implementation21 Jan 2020 Daniele Gammelli, Inon Peled, Filipe Rodrigues, Dario Pacino, Haci A. Kurtaran, Francisco C. Pereira

Transport demand is highly dependent on supply, especially for shared transport services where availability is often limited.

Gaussian Processes

Bayesian Automatic Relevance Determination for Utility Function Specification in Discrete Choice Models

no code implementations10 Jun 2019 Filipe Rodrigues, Nicola Ortelli, Michel Bierlaire, Francisco Pereira

Specifying utility functions is a key step towards applying the discrete choice framework for understanding the behaviour processes that govern user choices.

Bayesian Inference Discrete Choice Models +1

Multi-output Bus Travel Time Prediction with Convolutional LSTM Neural Network

no code implementations7 Mar 2019 Niklas Christoffer Petersen, Filipe Rodrigues, Francisco Camara Pereira

Accurate and reliable travel time predictions in public transport networks are essential for delivering an attractive service that is able to compete with other modes of transport in urban areas.

A Bayesian Additive Model for Understanding Public Transport Usage in Special Events

no code implementations20 Dec 2018 Filipe Rodrigues, Stanislav S. Borysov, Bernardete Ribeiro, Francisco C. Pereira

Public special events, like sports games, concerts and festivals are well known to create disruptions in transportation systems, often catching the operators by surprise.

Combining time-series and textual data for taxi demand prediction in event areas: a deep learning approach

no code implementations16 Aug 2018 Filipe Rodrigues, Ioulia Markou, Francisco Pereira

Accurate time-series forecasting is vital for numerous areas of application such as transportation, energy, finance, economics, etc.

Time Series Time Series Forecasting +1

Deep learning from crowds

3 code implementations6 Sep 2017 Filipe Rodrigues, Francisco Pereira

Over the last few years, deep learning has revolutionized the field of machine learning by dramatically improving the state-of-the-art in various domains.

Can Topic Modelling benefit from Word Sense Information?

1 code implementation LREC 2016 Adriana Ferrugento, Hugo Gon{\c{c}}alo Oliveira, Ana Alves, Filipe Rodrigues

This paper proposes a new topic model that exploits word sense information in order to discover less redundant and more informative topics.

Cannot find the paper you are looking for? You can Submit a new open access paper.