Search Results for author: Peter Chin

Found 29 papers, 5 papers with code

Weisfeiler and Lehman Go Paths: Learning Topological Features via Path Complexes

no code implementations13 Aug 2023 Quang Truong, Peter Chin

Graph Neural Networks (GNNs), despite achieving remarkable performance across different tasks, are theoretically bounded by the 1-Weisfeiler-Lehman test, resulting in limitations in terms of graph expressivity.

Graph Classification Graph Property Prediction +1

On the Transition from Neural Representation to Symbolic Knowledge

no code implementations3 Aug 2023 Junyan Cheng, Peter Chin

Bridging the huge disparity between neural and symbolic representation can potentially enable the incorporation of symbolic thinking into neural networks from essence.

Dictionary Learning

Adversarial Transformer Language Models for Contextual Commonsense Inference

no code implementations10 Feb 2023 Pedro Colon-Hernandez, Henry Lieberman, Yida Xin, Claire Yin, Cynthia Breazeal, Peter Chin

Contextualized or discourse aware commonsense inference is the task of generating coherent commonsense assertions (i. e., facts) from a given story, and a particular sentence from that story.

Knowledge Graphs Language Modelling +1

cs-net: structural approach to time-series forecasting for high-dimensional feature space data with limited observations

no code implementations5 Dec 2022 Weiyu Zong, Mingqian Feng, Griffin Heyrich, Peter Chin

However, when these novel methods are used to handle high-dimensional multivariate forecasting problems, their performance is highly restricted by a practical training time and a reasonable GPU memory configuration.

Multivariate Time Series Forecasting Time Series

A Multi-scale Graph Signature for Persistence Diagrams based on Return Probabilities of Random Walks

no code implementations28 Sep 2022 Chau Pham, Trung Dang, Peter Chin

Persistence diagrams (PDs), often characterized as sets of death and birth of homology class, have been known for providing a topological representation of a graph structure, which is often useful in machine learning tasks.

Graph Classification

A Study on Self-Supervised Object Detection Pretraining

no code implementations9 Jul 2022 Trung Dang, Simon Kornblith, Huy Thong Nguyen, Peter Chin, Maryam Khademi

In this work, we study different approaches to self-supervised pretraining of object detection models.

Object object-detection +2

Collusion Detection in Team-Based Multiplayer Games

no code implementations10 Mar 2022 Laura Greige, Fernando De Mesentier Silva, Meredith Trotter, Chris Lawrence, Peter Chin, Dilip Varadarajan

In the context of competitive multiplayer games, collusion happens when two or more teams decide to collaborate towards a common goal, with the intention of gaining an unfair advantage from this cooperation.

Non-Volatile Memory Accelerated Geometric Multi-Scale Resolution Analysis

no code implementations21 Feb 2022 Andrew Wood, Moshik Hershcovitch, Daniel Waddington, Sarel Cohen, Meredith Wolf, Hongjun Suh, Weiyu Zong, Peter Chin

Dimensionality reduction algorithms are frequently used to augment downstream tasks such as machine learning, data science, and also are exploratory methods for understanding complex phenomena.

Dimensionality Reduction

Corrupting Data to Remove Deceptive Perturbation: Using Preprocessing Method to Improve System Robustness

no code implementations5 Jan 2022 Hieu Le, Hans Walker, Dung Tran, Peter Chin

Although deep neural networks have achieved great performance on classification tasks, recent studies showed that well trained networks can be fooled by adding subtle noises.

Denoising

Training Robust Zero-Shot Voice Conversion Models with Self-supervised Features

no code implementations8 Dec 2021 Trung Dang, Dung Tran, Peter Chin, Kazuhito Koishida

Unsupervised Zero-Shot Voice Conversion (VC) aims to modify the speaker characteristic of an utterance to match an unseen target speaker without relying on parallel training data.

Self-Supervised Learning Voice Conversion

Revealing and Protecting Labels in Distributed Training

1 code implementation NeurIPS 2021 Trung Dang, Om Thakkar, Swaroop Ramaswamy, Rajiv Mathews, Peter Chin, Françoise Beaufays

Prior works have demonstrated that labels can be revealed analytically from the last layer of certain models (e. g., ResNet), or they can be reconstructed jointly with model inputs by using Gradients Matching [Zhu et al'19] with additional knowledge about the current state of the model.

Automatic Speech Recognition Automatic Speech Recognition (ASR) +4

Neural-guided, Bidirectional Program Search for Abstraction and Reasoning

no code implementations22 Oct 2021 Simon Alford, Anshula Gandhi, Akshay Rangamani, Andrzej Banburski, Tony Wang, Sylee Dandekar, John Chin, Tomaso Poggio, Peter Chin

More specifically, we extend existing execution-guided program synthesis approaches with deductive reasoning based on function inverse semantics to enable a neural-guided bidirectional search algorithm.

Program Synthesis Visual Reasoning

What is Learned in Knowledge Graph Embeddings?

no code implementations19 Oct 2021 Michael R. Douglas, Michael Simkin, Omri Ben-Eliezer, Tianqi Wu, Peter Chin, Trung V. Dang, Andrew Wood

Their relative success is often credited in the literature to their ability to learn logical rules between the relations.

Knowledge Graph Embeddings

Substitutional Neural Image Compression

no code implementations16 May 2021 Xiao Wang, Wei Jiang, Wei Wang, Shan Liu, Brian Kulis, Peter Chin

The key idea is to replace the image to be compressed with a substitutional one that outperforms the original one in a desired way.

Image Compression

GymFG: A Framework with a Gym Interface for FlightGear

no code implementations26 Apr 2020 Andrew Wood, Ali Sydney, Peter Chin, Bishal Thapa, Ryan Ross

As a result, we have developed GymFG: GymFG couples and extends a high fidelity, open-source flight simulator and a robust agent learning framework to facilitate learning of more complex tasks.

Imitation Learning

Deep Reinforcement Learning for FlipIt Security Game

no code implementations28 Feb 2020 Laura Greige, Peter Chin

We apply our model to FlipIt, a two-player security game in which both players, the attacker and the defender, compete for ownership of a shared resource and only receive information on the current state of the game upon making a move.

Q-Learning reinforcement-learning +1

AdvMS: A Multi-source Multi-cost Defense Against Adversarial Attacks

no code implementations19 Feb 2020 Xiao Wang, Siyue Wang, Pin-Yu Chen, Xue Lin, Peter Chin

Designing effective defense against adversarial attacks is a crucial topic as deep neural networks have been proliferated rapidly in many security-critical domains such as malware detection and self-driving cars.

Malware Detection Self-Driving Cars

Block Switching: A Stochastic Approach for Deep Learning Security

no code implementations18 Feb 2020 Xiao Wang, Siyue Wang, Pin-Yu Chen, Xue Lin, Peter Chin

Recent study of adversarial attacks has revealed the vulnerability of modern deep learning models.

Protecting Neural Networks with Hierarchical Random Switching: Towards Better Robustness-Accuracy Trade-off for Stochastic Defenses

1 code implementation20 Aug 2019 Xiao Wang, Siyue Wang, Pin-Yu Chen, Yanzhi Wang, Brian Kulis, Xue Lin, Peter Chin

However, one critical drawback of current defenses is that the robustness enhancement is at the cost of noticeable performance degradation on legitimate data, e. g., large drop in test accuracy.

Adversarial Robustness

Tree-Transformer: A Transformer-Based Method for Correction of Tree-Structured Data

no code implementations1 Aug 2019 Jacob Harer, Chris Reale, Peter Chin

We applied this architecture to correction tasks in both the source code and natural language domains.

Defensive Dropout for Hardening Deep Neural Networks under Adversarial Attacks

no code implementations13 Sep 2018 Siyue Wang, Xiao Wang, Pu Zhao, Wujie Wen, David Kaeli, Peter Chin, Xue Lin

Based on the observations of the effect of test dropout rate on test accuracy and attack success rate, we propose a defensive dropout algorithm to determine an optimal test dropout rate given the neural network model and the attacker's strategy for generating adversarial examples. We also investigate the mechanism behind the outstanding defense effects achieved by the proposed defensive dropout.

Learning to Repair Software Vulnerabilities with Generative Adversarial Networks

no code implementations NeurIPS 2018 Jacob Harer, Onur Ozdemir, Tomo Lazovich, Christopher P. Reale, Rebecca L. Russell, Louis Y. Kim, Peter Chin

Motivated by the problem of automated repair of software vulnerabilities, we propose an adversarial learning approach that maps from one discrete source domain to another target domain without requiring paired labeled examples or source and target domains to be bijections.

Code Repair Generative Adversarial Network +1

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