Search Results for author: Ryan Rossi

Found 31 papers, 12 papers with code

GLEMOS: Benchmark for Instantaneous Graph Learning Model Selection

1 code implementation NeurIPS 2023 Namyong Park, Ryan Rossi, Xing Wang, Antoine Simoulin, Nesreen Ahmed, Christos Faloutsos

The choice of a graph learning (GL) model (i. e., a GL algorithm and its hyperparameter settings) has a significant impact on the performance of downstream tasks.

Graph Learning Link Prediction +2

Forward Learning of Graph Neural Networks

1 code implementation16 Mar 2024 Namyong Park, Xing Wang, Antoine Simoulin, Shuai Yang, Grey Yang, Ryan Rossi, Puja Trivedi, Nesreen Ahmed

To address these limitations, the forward-forward algorithm (FF) was recently proposed as an alternative to BP in the image classification domain, which trains NNs by performing two forward passes over positive and negative data.

Drug Discovery Graph Learning +2

Continuous Treatment Effects with Surrogate Outcomes

no code implementations31 Jan 2024 Zhenghao Zeng, David Arbour, Avi Feller, Raghavendra Addanki, Ryan Rossi, Ritwik Sinha, Edward H. Kennedy

In this paper, we study the role of surrogates in estimating continuous treatment effects and propose a doubly robust method to efficiently incorporate surrogates in the analysis, which uses both labeled and unlabeled data and does not suffer from the above selection bias problem.

Causal Inference Selection bias

Augment before You Try: Knowledge-Enhanced Table Question Answering via Table Expansion

1 code implementation28 Jan 2024 Yujian Liu, Jiabao Ji, Tong Yu, Ryan Rossi, Sungchul Kim, Handong Zhao, Ritwik Sinha, Yang Zhang, Shiyu Chang

Table question answering is a popular task that assesses a model's ability to understand and interact with structured data.

Question Answering

GPT-4 as an Effective Zero-Shot Evaluator for Scientific Figure Captions

no code implementations23 Oct 2023 Ting-Yao Hsu, Chieh-Yang Huang, Ryan Rossi, Sungchul Kim, C. Lee Giles, Ting-Hao K. Huang

We first constructed SCICAP-EVAL, a human evaluation dataset that contains human judgments for 3, 600 scientific figure captions, both original and machine-made, for 600 arXiv figures.

Graph Learning with Localized Neighborhood Fairness

no code implementations22 Dec 2022 April Chen, Ryan Rossi, Nedim Lipka, Jane Hoffswell, Gromit Chan, Shunan Guo, Eunyee Koh, Sungchul Kim, Nesreen K. Ahmed

Learning fair graph representations for downstream applications is becoming increasingly important, but existing work has mostly focused on improving fairness at the global level by either modifying the graph structure or objective function without taking into account the local neighborhood of a node.

Fairness Graph Learning +2

MetaGL: Evaluation-Free Selection of Graph Learning Models via Meta-Learning

1 code implementation18 Jun 2022 Namyong Park, Ryan Rossi, Nesreen Ahmed, Christos Faloutsos

In this work, we develop the first meta-learning approach for evaluation-free graph learning model selection, called MetaGL, which utilizes the prior performances of existing methods on various benchmark graph datasets to automatically select an effective model for the new graph, without any model training or evaluations.

BIG-bench Machine Learning Graph Learning +3

CGC: Contrastive Graph Clustering for Community Detection and Tracking

1 code implementation5 Apr 2022 Namyong Park, Ryan Rossi, Eunyee Koh, Iftikhar Ahamath Burhanuddin, Sungchul Kim, Fan Du, Nesreen Ahmed, Christos Faloutsos

Especially, deep graph clustering (DGC) methods have successfully extended deep clustering to graph-structured data by learning node representations and cluster assignments in a joint optimization framework.

Clustering Community Detection +4

Neural Point Process for Learning Spatiotemporal Event Dynamics

1 code implementation12 Dec 2021 ZiHao Zhou, Xingyi Yang, Ryan Rossi, Handong Zhao, Rose Yu

The key construction of our approach is the nonparametric space-time intensity function, governed by a latent process.

Point Processes Variational Inference

Automatic Unsupervised Outlier Model Selection

no code implementations NeurIPS 2021 Yue Zhao, Ryan Rossi, Leman Akoglu

Given an unsupervised outlier detection task on a new dataset, how can we automatically select a good outlier detection algorithm and its hyperparameter(s) (collectively called a model)?

Meta-Learning Model Selection +1

Automatic Forecasting via Meta-Learning

no code implementations29 Sep 2021 Mustafa Abdallah, Ryan Rossi, Kanak Mahadik, Sungchul Kim, Handong Zhao, Haoliang Wang, Saurabh Bagchi

In this work, we develop techniques for fast automatic selection of the best forecasting model for a new unseen time-series dataset, without having to first train (or evaluate) all the models on the new time-series data to select the best one.

Meta-Learning Time Series +1

Asymptotics of Ridge Regression in Convolutional Models

no code implementations8 Mar 2021 Mojtaba Sahraee-Ardakan, Tung Mai, Anup Rao, Ryan Rossi, Sundeep Rangan, Alyson K. Fletcher

We show the double descent phenomenon in our experiments for convolutional models and show that our theoretical results match the experiments.

regression

Machine Unlearning via Algorithmic Stability

no code implementations25 Feb 2021 Enayat Ullah, Tung Mai, Anup Rao, Ryan Rossi, Raman Arora

Our key contribution is the design of corresponding efficient unlearning algorithms, which are based on constructing a (maximal) coupling of Markov chains for the noisy SGD procedure.

Machine Unlearning

Neural Point Process for Forecasting Spatiotemporal Events

no code implementations1 Jan 2021 ZiHao Zhou, Xingyi Yang, Xinyi He, Ryan Rossi, Handong Zhao, Rose Yu

To the best of our knowledge, this is the first neural point process model that can jointly predict both the space and time of events.

Density Estimation Point Processes

Learning Contextualized Knowledge Graph Structures for Commonsense Reasoning

no code implementations1 Jan 2021 Jun Yan, Mrigank Raman, Tianyu Zhang, Ryan Rossi, Handong Zhao, Sungchul Kim, Nedim Lipka, Xiang Ren

Recently, neural-symbolic architectures have achieved success on commonsense reasoning through effectively encoding relational structures retrieved from external knowledge graphs (KGs) and obtained state-of-the-art results in tasks such as (commonsense) question answering and natural language inference.

Knowledge Graphs Natural Language Inference +1

Reinforcement Learning-based N-ary Cross-Sentence Relation Extraction

no code implementations26 Sep 2020 Chenhan Yuan, Ryan Rossi, Andrew Katz, Hoda Eldardiry

In this paper, we relax this strong assumption by a weaker distant supervision assumption to address the second issue and propose a novel sentence distribution estimator model to address the first problem.

reinforcement-learning Reinforcement Learning (RL) +3

Clustering-based Unsupervised Generative Relation Extraction

no code implementations26 Sep 2020 Chenhan Yuan, Ryan Rossi, Andrew Katz, Hoda Eldardiry

To address this issue, we propose a Clustering-based Unsupervised generative Relation Extraction (CURE) framework that leverages an "Encoder-Decoder" architecture to perform self-supervised learning so the encoder can extract relation information.

Clustering Relation +3

Adjusting for Confounders with Text: Challenges and an Empirical Evaluation Framework for Causal Inference

no code implementations21 Sep 2020 Galen Weld, Peter West, Maria Glenski, David Arbour, Ryan Rossi, Tim Althoff

Across 648 experiments and two datasets, we evaluate every commonly used causal inference method and identify their strengths and weaknesses to inform social media researchers seeking to use such methods, and guide future improvements.

Causal Inference

Inferring Individual Level Causal Models from Graph-based Relational Time Series

no code implementations16 Jan 2020 Ryan Rossi, Somdeb Sarkhel, Nesreen Ahmed

We propose causal inference models for this problem that leverage both the graph topology and time-series to accurately estimate local causal effects of nodes.

Causal Inference Time Series +1

Deep Relational Factorization Machines

no code implementations25 Sep 2019 Hongchang Gao, Gang Wu, Ryan Rossi, Viswanathan Swaminathan, Heng Huang

Factorization Machines (FMs) is an important supervised learning approach due to its unique ability to capture feature interactions when dealing with high-dimensional sparse data.

Figure Captioning with Reasoning and Sequence-Level Training

no code implementations7 Jun 2019 Charles Chen, Ruiyi Zhang, Eunyee Koh, Sungchul Kim, Scott Cohen, Tong Yu, Ryan Rossi, Razvan Bunescu

In this work, we investigate the problem of figure captioning where the goal is to automatically generate a natural language description of the figure.

Image Captioning

node2bits: Compact Time- and Attribute-aware Node Representations for User Stitching

1 code implementation18 Apr 2019 Di Jin, Mark Heimann, Ryan Rossi, Danai Koutra

Identity stitching, the task of identifying and matching various online references (e. g., sessions over different devices and timespans) to the same user in real-world web services, is crucial for personalization and recommendations.

Attribute Blocking

Latent Network Summarization: Bridging Network Embedding and Summarization

1 code implementation11 Nov 2018 Di Jin, Ryan Rossi, Danai Koutra, Eunyee Koh, Sungchul Kim, Anup Rao

Motivated by the computational and storage challenges that dense embeddings pose, we introduce the problem of latent network summarization that aims to learn a compact, latent representation of the graph structure with dimensionality that is independent of the input graph size (i. e., #nodes and #edges), while retaining the ability to derive node representations on the fly.

Social and Information Networks

Deep Graph Attention Model

no code implementations15 Sep 2017 John Boaz Lee, Ryan Rossi, Xiangnan Kong

Graph classification is a problem with practical applications in many different domains.

General Classification Graph Attention +1

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