Search Results for author: Ferdinando Fioretto

Found 66 papers, 8 papers with code

Constrained Language Generation with Discrete Diffusion Models

no code implementations12 Mar 2025 Michael Cardei, Jacob K Christopher, Thomas Hartvigsen, Brian R. Bartoldson, Bhavya Kailkhura, Ferdinando Fioretto

Constraints are critical in text generation as LLM outputs are often unreliable when it comes to ensuring generated outputs adhere to user defined instruction or general safety guidelines.

Text Generation

Global-Decision-Focused Neural ODEs for Proactive Grid Resilience Management

no code implementations25 Feb 2025 Shuyi Chen, Ferdinando Fioretto, Feng Qiu, Shixiang Zhu

Extreme hazard events such as wildfires and hurricanes increasingly threaten power systems, causing widespread outages and disrupting critical services.

Decision Making Management +1

Simultaneous Multi-Robot Motion Planning with Projected Diffusion Models

no code implementations5 Feb 2025 Jinhao Liang, Jacob K Christopher, Sven Koenig, Ferdinando Fioretto

Recent advances in diffusion models hold significant potential in robotics, enabling the generation of diverse and smooth trajectories directly from raw representations of the environment.

Collision Avoidance Motion Planning +1

Multi-Agent Path Finding in Continuous Spaces with Projected Diffusion Models

no code implementations23 Dec 2024 Jinhao Liang, Jacob K. Christopher, Sven Koenig, Ferdinando Fioretto

To overcome this limitation, this work proposes a novel approach that integrates constrained optimization with diffusion models for MAPF in continuous spaces.

Collision Avoidance Multi-Agent Path Finding +1

Differential Privacy Overview and Fundamental Techniques

no code implementations7 Nov 2024 Ferdinando Fioretto, Pascal Van Hentenryck, Juba Ziani

This chapter is meant to be part of the book "Differential Privacy in Artificial Intelligence: From Theory to Practice" and provides an introduction to Differential Privacy.

Privacy Preserving

Learning to Optimize meets Neural-ODE: Real-Time, Stability-Constrained AC OPF

no code implementations24 Oct 2024 Vincenzo Di Vito, Mostafa Mohammadian, Kyri Baker, Ferdinando Fioretto

Recent developments in applying machine learning to address Alternating Current Optimal Power Flow (AC OPF) problems have demonstrated significant potential in providing close to optimal solutions for generator dispatch in near real-time.

End-to-End Optimization and Learning of Fair Court Schedules

no code implementations22 Oct 2024 My H Dinh, James Kotary, Lauryn P. Gouldin, William Yeoh, Ferdinando Fioretto

There is thus a need for fair criminal court pretrial scheduling systems that account for defendants' preferences and availability, but the collection of such data poses logistical challenges.

Fairness Scheduling

Learning To Solve Differential Equation Constrained Optimization Problems

no code implementations2 Oct 2024 Vincenzo Di Vito, Mostafa Mohammadian, Kyri Baker, Ferdinando Fioretto

Differential equations (DE) constrained optimization plays a critical role in numerous scientific and engineering fields, including energy systems, aerospace engineering, ecology, and finance, where optimal configurations or control strategies must be determined for systems governed by ordinary or stochastic differential equations.

Learning Joint Models of Prediction and Optimization

no code implementations7 Sep 2024 James Kotary, Vincenzo Di Vito, Jacob Cristopher, Pascal Van Hentenryck, Ferdinando Fioretto

The Predict-Then-Optimize framework uses machine learning models to predict unknown parameters of an optimization problem from exogenous features before solving.

Prediction

Fairness Issues and Mitigations in (Differentially Private) Socio-Demographic Data Processes

no code implementations16 Aug 2024 Joonhyuk Ko, Juba Ziani, Saswat Das, Matt Williams, Ferdinando Fioretto

Statistical agencies rely on sampling techniques to collect socio-demographic data crucial for policy-making and resource allocation.

Fairness Privacy Preserving

Speculative Diffusion Decoding: Accelerating Language Generation through Diffusion

no code implementations10 Aug 2024 Jacob K Christopher, Brian R Bartoldson, Tal Ben-Nun, Michael Cardei, Bhavya Kailkhura, Ferdinando Fioretto

Speculative decoding has emerged as a widely adopted method to accelerate large language model inference without sacrificing the quality of the model outputs.

Language Modeling Language Modelling +2

Differentially Private Data Release on Graphs: Inefficiencies and Unfairness

no code implementations8 Aug 2024 Ferdinando Fioretto, Diptangshu Sen, Juba Ziani

The goal of this paper is to characterize the impact of DP on bias and unfairness in the context of releasing information about networks, taking a departure from previous work which has studied these effects in the context of private population counts release (such as in the U. S. Census).

Fairness

The Data Minimization Principle in Machine Learning

no code implementations29 May 2024 Prakhar Ganesh, Cuong Tran, Reza Shokri, Ferdinando Fioretto

The principle of data minimization aims to reduce the amount of data collected, processed or retained to minimize the potential for misuse, unauthorized access, or data breaches.

Low-rank finetuning for LLMs: A fairness perspective

no code implementations28 May 2024 Saswat Das, Marco Romanelli, Cuong Tran, Zarreen Reza, Bhavya Kailkhura, Ferdinando Fioretto

Low-rank approximation techniques have become the de facto standard for fine-tuning Large Language Models (LLMs) due to their reduced computational and memory requirements.

Decision Making Fairness +1

Metric Learning to Accelerate Convergence of Operator Splitting Methods for Differentiable Parametric Programming

1 code implementation1 Apr 2024 Ethan King, James Kotary, Ferdinando Fioretto, Jan Drgona

Recent work has shown a variety of ways in which machine learning can be used to accelerate the solution of constrained optimization problems.

Decision Making Metric Learning

Learning Constrained Optimization with Deep Augmented Lagrangian Methods

no code implementations6 Mar 2024 James Kotary, Ferdinando Fioretto

Learning to Optimize (LtO) is a problem setting in which a machine learning (ML) model is trained to emulate a constrained optimization solver.

End-to-End Learning for Fair Multiobjective Optimization Under Uncertainty

no code implementations12 Feb 2024 My H Dinh, James Kotary, Ferdinando Fioretto

Many decision processes in artificial intelligence and operations research are modeled by parametric optimization problems whose defining parameters are unknown and must be inferred from observable data.

Fairness Multiobjective Optimization

Disparate Impact on Group Accuracy of Linearization for Private Inference

1 code implementation6 Feb 2024 Saswat Das, Marco Romanelli, Ferdinando Fioretto

Ensuring privacy-preserving inference on cryptographically secure data is a well-known computational challenge.

Fairness Privacy Preserving

Constrained Synthesis with Projected Diffusion Models

1 code implementation5 Feb 2024 Jacob K Christopher, Stephen Baek, Ferdinando Fioretto

This paper introduces an approach to endow generative diffusion processes the ability to satisfy and certify compliance with constraints and physical principles.

Motion Synthesis Video Generation

Analyzing and Enhancing the Backward-Pass Convergence of Unrolled Optimization

no code implementations28 Dec 2023 James Kotary, Jacob Christopher, My H Dinh, Ferdinando Fioretto

The integration of constrained optimization models as components in deep networks has led to promising advances on many specialized learning tasks.

On The Fairness Impacts of Hardware Selection in Machine Learning

no code implementations6 Dec 2023 Sree Harsha Nelaturu, Nishaanth Kanna Ravichandran, Cuong Tran, Sara Hooker, Ferdinando Fioretto

In the machine learning ecosystem, hardware selection is often regarded as a mere utility, overshadowed by the spotlight on algorithms and data.

Fairness

Predict-Then-Optimize by Proxy: Learning Joint Models of Prediction and Optimization

no code implementations22 Nov 2023 James Kotary, Vincenzo Di Vito, Jacob Christopher, Pascal Van Hentenryck, Ferdinando Fioretto

This paper proposes an alternative method, in which optimal solutions are learned directly from the observable features by predictive models.

Price-Aware Deep Learning for Electricity Markets

no code implementations2 Aug 2023 Vladimir Dvorkin, Ferdinando Fioretto

While deep learning gradually penetrates operational planning, its inherent prediction errors may significantly affect electricity prices.

Deep Learning Fairness +1

Decision-Focused Learning: Foundations, State of the Art, Benchmark and Future Opportunities

1 code implementation25 Jul 2023 Jayanta Mandi, James Kotary, Senne Berden, Maxime Mulamba, Victor Bucarey, Tias Guns, Ferdinando Fioretto

This paper presents a comprehensive review of DFL, providing an in-depth analysis of both gradient-based and gradient-free techniques used to combine ML and constrained optimization.

Decision Making

FairDP: Certified Fairness with Differential Privacy

no code implementations25 May 2023 Khang Tran, Ferdinando Fioretto, Issa Khalil, My T. Thai, Linh Thi Xuan Phan NhatHai Phan

This paper introduces FairDP, a novel training mechanism designed to provide group fairness certification for the trained model's decisions, along with a differential privacy (DP) guarantee to protect training data.

Fairness

On the Fairness Impacts of Private Ensembles Models

no code implementations19 May 2023 Cuong Tran, Ferdinando Fioretto

The Private Aggregation of Teacher Ensembles (PATE) is a machine learning framework that enables the creation of private models through the combination of multiple "teacher" models and a "student" model.

Fairness

Personalized Privacy Auditing and Optimization at Test Time

no code implementations31 Jan 2023 Cuong Tran, Ferdinando Fioretto

A number of learning models used in consequential domains, such as to assist in legal, banking, hiring, and healthcare decisions, make use of potentially sensitive users' information to carry out inference.

Context-Aware Differential Privacy for Language Modeling

no code implementations28 Jan 2023 My H. Dinh, Ferdinando Fioretto

The remarkable ability of language models (LMs) has also brought challenges at the interface of AI and security.

Language Modeling Language Modelling +1

Backpropagation of Unrolled Solvers with Folded Optimization

no code implementations28 Jan 2023 James Kotary, My H. Dinh, Ferdinando Fioretto

A central challenge in this setting is backpropagation through the solution of an optimization problem, which typically lacks a closed form.

Rolling Shutter Correction Structured Prediction

Privacy and Bias Analysis of Disclosure Avoidance Systems

no code implementations28 Jan 2023 Keyu Zhu, Ferdinando Fioretto, Pascal Van Hentenryck, Saswat Das, Christine Task

The results show that, contrary to popular beliefs, traditional differential privacy techniques may be superior in terms of accuracy and fairness to differential private counterparts of widely used DA mechanisms.

Fairness

Fairness Increases Adversarial Vulnerability

no code implementations21 Nov 2022 Cuong Tran, Keyu Zhu, Ferdinando Fioretto, Pascal Van Hentenryck

The remarkable performance of deep learning models and their applications in consequential domains (e. g., facial recognition) introduces important challenges at the intersection of equity and security.

Fairness

Gradient-Enhanced Physics-Informed Neural Networks for Power Systems Operational Support

no code implementations21 Jun 2022 Mostafa Mohammadian, Kyri Baker, Ferdinando Fioretto

The application of deep learning methods to speed up the resolution of challenging power flow problems has recently shown very encouraging results.

Pruning has a disparate impact on model accuracy

no code implementations26 May 2022 Cuong Tran, Ferdinando Fioretto, Jung-eun Kim, Rakshit Naidu

Network pruning is a widely-used compression technique that is able to significantly scale down overparameterized models with minimal loss of accuracy.

Network Pruning

SF-PATE: Scalable, Fair, and Private Aggregation of Teacher Ensembles

no code implementations11 Apr 2022 Cuong Tran, Keyu Zhu, Ferdinando Fioretto, Pascal Van Hentenryck

A key characteristic of the proposed model is to enable the adoption of off-the-selves and non-private fair models to create a privacy-preserving and fair model.

Fairness Privacy Preserving

Deadwooding: Robust Global Pruning for Deep Neural Networks

no code implementations10 Feb 2022 Sawinder Kaur, Ferdinando Fioretto, Asif Salekin

The ability of Deep Neural Networks to approximate highly complex functions is key to their success.

Adversarial Robustness

Differentially-Private Heat and Electricity Markets Coordination

no code implementations25 Jan 2022 Lesia Mitridati, Emma Romei, Gabriela Hug, Ferdinando Fioretto

Sector coordination between heat and electricity systems has been identified has an energy-efficient and cost-effective way to transition towards a more sustainable energy system.

Privacy Preserving Time Series +1

Post-processing of Differentially Private Data: A Fairness Perspective

no code implementations24 Jan 2022 Keyu Zhu, Ferdinando Fioretto, Pascal Van Hentenryck

Post-processing immunity is a fundamental property of differential privacy: it enables arbitrary data-independent transformations to differentially private outputs without affecting their privacy guarantees.

Fairness

Differentially Private Empirical Risk Minimization under the Fairness Lens

no code implementations NeurIPS 2021 Cuong Tran, My Dinh, Ferdinando Fioretto

However, it was recently observed that DP learning systems may exacerbate bias and unfairness for different groups of individuals.

Fairness

End-to-end Learning for Fair Ranking Systems

no code implementations21 Nov 2021 James Kotary, Ferdinando Fioretto, Pascal Van Hentenryck, Ziwei Zhu

The end-to-end SPOFR framework includes a constrained optimization sub-model and produces ranking policies that are guaranteed to satisfy fairness constraints while allowing for fine control of the fairness-utility tradeoff.

Fairness Learning-To-Rank

Fast Approximations for Job Shop Scheduling: A Lagrangian Dual Deep Learning Method

no code implementations12 Oct 2021 James Kotary, Ferdinando Fioretto, Pascal Van Hentenryck

The Jobs shop Scheduling Problem (JSP) is a canonical combinatorial optimization problem that is routinely solved for a variety of industrial purposes.

Combinatorial Optimization Job Shop Scheduling +1

A Fairness Analysis on Private Aggregation of Teacher Ensembles

no code implementations17 Sep 2021 Cuong Tran, My H. Dinh, Kyle Beiter, Ferdinando Fioretto

The Private Aggregation of Teacher Ensembles (PATE) is an important private machine learning framework.

Fairness Privacy Preserving

Differentially Empirical Risk Minimization under the Fairness Lens

no code implementations4 Jun 2021 Cuong Tran, My H. Dinh, Ferdinando Fioretto

However, it was recently observed that DP learning systems may exacerbate bias and unfairness for different groups of individuals.

Fairness

Learning Hard Optimization Problems: A Data Generation Perspective

no code implementations NeurIPS 2021 James Kotary, Ferdinando Fioretto, Pascal Van Hentenryck

Optimization problems are ubiquitous in our societies and are present in almost every segment of the economy.

A Privacy-Preserving and Trustable Multi-agent Learning Framework

no code implementations2 Jun 2021 Anudit Nagar, Cuong Tran, Ferdinando Fioretto

Distributed multi-agent learning enables agents to cooperatively train a model without requiring to share their datasets.

Privacy Preserving

Decision Making with Differential Privacy under a Fairness Lens

no code implementations16 May 2021 Ferdinando Fioretto, Cuong Tran, Pascal Van Hentenryck

Agencies, such as the U. S. Census Bureau, release data sets and statistics about groups of individuals that are used as input to a number of critical decision processes.

Decision Making Fairness +1

Load Encoding for Learning AC-OPF

no code implementations11 Jan 2021 Terrence W. K. Mak, Ferdinando Fioretto, Pascal VanHentenryck

The AC Optimal Power Flow (AC-OPF) problem is a core building block in electrical transmission system.

Bilevel Optimization Deep Learning

Bias and Variance of Post-processing in Differential Privacy

no code implementations9 Oct 2020 Keyu Zhu, Pascal Van Hentenryck, Ferdinando Fioretto

Moreover, when the feasible region is convex, a widely adopted class of post-processing steps is also guaranteed to improve accuracy.

Privacy Preserving

Differentially Private and Fair Deep Learning: A Lagrangian Dual Approach

no code implementations26 Sep 2020 Cuong Tran, Ferdinando Fioretto, Pascal Van Hentenryck

A critical concern in data-driven decision making is to build models whose outcomes do not discriminate against some demographic groups, including gender, ethnicity, or age.

Decision Making Deep Learning +1

Differential Privacy of Hierarchical Census Data: An Optimization Approach

no code implementations28 Jun 2020 Ferdinando Fioretto, Pascal Van Hentenryck, Keyu Zhu

To address them, this paper presents a novel differential-privacy mechanism for releasing hierarchical counts of individuals.

Computational Efficiency

Differentially Private Convex Optimization with Feasibility Guarantees

1 code implementation22 Jun 2020 Vladimir Dvorkin, Ferdinando Fioretto, Pascal Van Hentenryck, Jalal Kazempour, Pierre Pinson

This paper develops a novel differentially private framework to solve convex optimization problems with sensitive optimization data and complex physical or operational constraints.

Lagrangian Duality for Constrained Deep Learning

no code implementations26 Jan 2020 Ferdinando Fioretto, Pascal Van Hentenryck, Terrence WK Mak, Cuong Tran, Federico Baldo, Michele Lombardi

In energy domains, the combination of Lagrangian duality and deep learning can be used to obtain state-of-the-art results to predict optimal power flows, in energy systems, and optimal compressor settings, in gas networks.

Deep Learning Fairness

Predicting AC Optimal Power Flows: Combining Deep Learning and Lagrangian Dual Methods

no code implementations19 Sep 2019 Ferdinando Fioretto, Terrence W. K. Mak, Pascal Van Hentenryck

The Optimal Power Flow (OPF) problem is a fundamental building block for the optimization of electrical power systems.

Privacy-Preserving Obfuscation of Critical Infrastructure Networks

no code implementations23 May 2019 Ferdinando Fioretto, Terrence W. K. Mak, Pascal Van Hentenryck

The paper studies how to release data about a critical infrastructure network (e. g., the power network or a transportation network) without disclosing sensitive information that can be exploited by malevolent agents, while preserving the realism of the network.

Privacy Preserving

Differential Privacy for Power Grid Obfuscation

1 code implementation21 Jan 2019 Ferdinando Fioretto, Terrence W. K. Mak, Pascal Van Hentenryck

To address these concerns, this paper presents a novel differential privacy mechanism that guarantees AC-feasibility and largely preserves the fidelity of the obfuscated network.

OptStream: Releasing Time Series Privately

no code implementations6 Aug 2018 Ferdinando Fioretto, Pascal Van Hentenryck

Then, the perturbation module adds noise to the sampled data points to guarantee privacy.

Decision Making Load Forecasting +2

A Realistic Dataset for the Smart Home Device Scheduling Problem for DCOPs

no code implementations22 Feb 2017 William Kluegel, Muhammad Aamir Iqbal, Ferdinando Fioretto, William Yeoh, Enrico Pontelli

The field of Distributed Constraint Optimization has gained momentum in recent years thanks to its ability to address various applications related to multi-agent cooperation.

Scheduling

Solving DCOPs with Distributed Large Neighborhood Search

no code implementations22 Feb 2017 Ferdinando Fioretto, Agostino Dovier, Enrico Pontelli, William Yeoh, Roie Zivan

The field of Distributed Constraint Optimization has gained momentum in recent years, thanks to its ability to address various applications related to multi-agent cooperation.

Distributed Constraint Optimization Problems and Applications: A Survey

no code implementations20 Feb 2016 Ferdinando Fioretto, Enrico Pontelli, William Yeoh

The field of Multi-Agent System (MAS) is an active area of research within Artificial Intelligence, with an increasingly important impact in industrial and other real-world applications.

General Classification Survey

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