Search Results for author: Eunyee Koh

Found 22 papers, 5 papers with code

PersonaSAGE: A Multi-Persona Graph Neural Network

no code implementations28 Dec 2022 Gautam Choudhary, Iftikhar Ahamath Burhanuddin, Eunyee Koh, Fan Du, Ryan A. Rossi

Furthermore, PersonaSAGE learns the appropriate set of persona embeddings for each node in the graph, and every node can have a different number of assigned persona embeddings.

Link Prediction Management +1

A Hypergraph Neural Network Framework for Learning Hyperedge-Dependent Node Embeddings

no code implementations28 Dec 2022 Ryan Aponte, Ryan A. Rossi, Shunan Guo, Jane Hoffswell, Nedim Lipka, Chang Xiao, Gromit Chan, Eunyee Koh, Nesreen Ahmed

In this work, we introduce a hypergraph representation learning framework called Hypergraph Neural Networks (HNN) that jointly learns hyperedge embeddings along with a set of hyperedge-dependent embeddings for each node in the hypergraph.

Hyperedge Prediction Node Classification +1

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

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

Online MAP Inference and Learning for Nonsymmetric Determinantal Point Processes

no code implementations29 Nov 2021 Aravind Reddy, Ryan A. Rossi, Zhao Song, Anup Rao, Tung Mai, Nedim Lipka, Gang Wu, Eunyee Koh, Nesreen Ahmed

In this paper, we introduce the online and streaming MAP inference and learning problems for Non-symmetric Determinantal Point Processes (NDPPs) where data points arrive in an arbitrary order and the algorithms are constrained to use a single-pass over the data as well as sub-linear memory.

Point Processes valid

Developing a Conversational Recommendation System for Navigating Limited Options

no code implementations13 Apr 2021 Victor S. Bursztyn, Jennifer Healey, Eunyee Koh, Nedim Lipka, Larry Birnbaum

We have developed a conversational recommendation system designed to help users navigate through a set of limited options to find the best choice.

Navigate

Insight-centric Visualization Recommendation

no code implementations21 Mar 2021 Camille Harris, Ryan A. Rossi, Sana Malik, Jane Hoffswell, Fan Du, Tak Yeon Lee, Eunyee Koh, Handong Zhao

This global ranking makes it difficult and time-consuming for users to find the most interesting or relevant insights.

Attribute Recommendation Systems

Personalized Visualization Recommendation

no code implementations12 Feb 2021 Xin Qian, Ryan A. Rossi, Fan Du, Sungchul Kim, Eunyee Koh, Sana Malik, Tak Yeon Lee, Nesreen K. Ahmed

Visualization recommendation work has focused solely on scoring visualizations based on the underlying dataset and not the actual user and their past visualization feedback.

Heterogeneous Graphlets

no code implementations23 Oct 2020 Ryan A. Rossi, Nesreen K. Ahmed, Aldo Carranza, David Arbour, Anup Rao, Sungchul Kim, Eunyee Koh

Notably, since typed graphlet is more general than colored graphlet (and untyped graphlets), the counts of various typed graphlets can be combined to obtain the counts of the much simpler notion of colored graphlets.

ML-based Visualization Recommendation: Learning to Recommend Visualizations from Data

no code implementations25 Sep 2020 Xin Qian, Ryan A. Rossi, Fan Du, Sungchul Kim, Eunyee Koh, Sana Malik, Tak Yeon Lee, Joel Chan

Finally, we observed a strong preference by the human experts in our user study towards the visualizations recommended by our ML-based system as opposed to the rule-based system (5. 92 from a 7-point Likert scale compared to only 3. 45).

Higher-Order Ranking and Link Prediction: From Closing Triangles to Closing Higher-Order Motifs

no code implementations12 Jun 2019 Ryan A. Rossi, Anup Rao, Sungchul Kim, Eunyee Koh, Nesreen K. Ahmed, Gang Wu

In this work, we investigate higher-order network motifs and develop techniques based on the notion of closing higher-order motifs that move beyond closing simple triangles.

Link Prediction

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

Dynamic Node Embeddings from Edge Streams

no code implementations12 Apr 2019 John Boaz Lee, Giang Nguyen, Ryan A. Rossi, Nesreen K. Ahmed, Eunyee Koh, Sungchul Kim

In this work, we propose using the notion of temporal walks for learning dynamic embeddings from temporal networks.

Representation Learning valid

Heterogeneous Network Motifs

no code implementations28 Jan 2019 Ryan A. Rossi, Nesreen K. Ahmed, Aldo Carranza, David Arbour, Anup Rao, Sungchul Kim, Eunyee Koh

To address this problem, we propose a fast, parallel, and space-efficient framework for counting typed graphlets in large networks.

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

Higher-order Spectral Clustering for Heterogeneous Graphs

no code implementations6 Oct 2018 Aldo G. Carranza, Ryan A. Rossi, Anup Rao, Eunyee Koh

Using typed-graphlets as a basis, we develop a general principled framework for higher-order clustering in heterogeneous networks.

Clustering Link Prediction

Higher-order Graph Convolutional Networks

no code implementations12 Sep 2018 John Boaz Lee, Ryan A. Rossi, Xiangnan Kong, Sungchul Kim, Eunyee Koh, Anup Rao

Experiments show that our proposed method is able to achieve state-of-the-art results on the semi-supervised node classification task.

General Classification Graph Attention +1

Attention Models in Graphs: A Survey

1 code implementation20 Jul 2018 John Boaz Lee, Ryan A. Rossi, Sungchul Kim, Nesreen K. Ahmed, Eunyee Koh

However, in the real-world, graphs can be both large - with many complex patterns - and noisy which can pose a problem for effective graph mining.

Graph Attention Graph Classification +2

HONE: Higher-Order Network Embeddings

no code implementations28 Jan 2018 Ryan A. Rossi, Nesreen K. Ahmed, Eunyee Koh, Sungchul Kim, Anup Rao, Yasin Abbasi Yadkori

This paper describes a general framework for learning Higher-Order Network Embeddings (HONE) from graph data based on network motifs.

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