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Graphs are a powerful data structure for representing relational data and are widely used to describe complex real-world systems. Probabilistic Graphical Models (PGMs) and Graph Neural Networks (GNNs) can both leverage graph-structured…

Machine Learning · Statistics 2025-08-26 Michela Lapenna , Caterina De Bacco

Context information around words helps in determining their actual meaning, for example "networks" used in contexts of artificial neural networks or biological neuron networks. Generative topic models infer topic-word distributions, taking…

Information Retrieval · Computer Science 2018-08-14 Pankaj Gupta , Florian Buettner , Hinrich Schütze

Word embedding models such as the skip-gram learn vector representations of words' semantic relationships, and document embedding models learn similar representations for documents. On the other hand, topic models provide latent…

Computation and Language · Computer Science 2019-09-12 Kamrun Naher Keya , Yannis Papanikolaou , James R. Foulds

Recent research on integrating Large Language Models (LLMs) with Graph Neural Networks (GNNs) typically follows two approaches: LLM-centered models, which convert graph data into tokens for LLM processing, and GNN-centered models, which use…

Machine Learning · Computer Science 2024-12-11 Haotong Yang , Xiyuan Wang , Qian Tao , Shuxian Hu , Zhouchen Lin , Muhan Zhang

Latent topic models have been successfully applied as an unsupervised topic discovery technique in large document collections. With the proliferation of hypertext document collection such as the Internet, there has also been great interest…

Information Retrieval · Computer Science 2012-06-18 Amit Gruber , Michal Rosen-Zvi , Yair Weiss

With the abundance of data and information in todays time, it is nearly impossible for man, or, even machine, to go through all of the data line by line. What one usually does is to try to skim through the lines and retain the absolutely…

Computation and Language · Computer Science 2024-02-09 Imaad Zaffar Khan , Amaan Aijaz Sheikh , Utkarsh Sinha

Emotions are an inherent part of human interactions, and consequently, it is imperative to develop AI systems that understand and recognize human emotions. During a conversation involving various people, a person's emotions are influenced…

Computation and Language · Computer Science 2022-05-06 Abhinav Joshi , Ashwani Bhat , Ayush Jain , Atin Vikram Singh , Ashutosh Modi

The representation learning on textual graph is to generate low-dimensional embeddings for the nodes based on the individual textual features and the neighbourhood information. Recent breakthroughs on pretrained language models and graph…

Computation and Language · Computer Science 2023-10-10 Junhan Yang , Zheng Liu , Shitao Xiao , Chaozhuo Li , Defu Lian , Sanjay Agrawal , Amit Singh , Guangzhong Sun , Xing Xie

Can we combine heterogenous graph structure with text to learn high-quality semantic and behavioural representations? Graph neural networks (GNN)s encode numerical node attributes and graph structure to achieve impressive performance in a…

Machine Learning · Computer Science 2022-06-23 Vassilis N. Ioannidis , Xiang Song , Da Zheng , Houyu Zhang , Jun Ma , Yi Xu , Belinda Zeng , Trishul Chilimbi , George Karypis

The task of natural language table retrieval (NLTR) seeks to retrieve semantically relevant tables based on natural language queries. Existing learning systems for this task often treat tables as plain text based on the assumption that…

Information Retrieval · Computer Science 2021-05-06 Fei Wang , Kexuan Sun , Muhao Chen , Jay Pujara , Pedro Szekely

This paper studies the topic modeling problem of tagged documents and images. Higher-order relations among tagged documents and images are major and ubiquitous characteristics, and play positive roles in extracting reliable and…

Computer Vision and Pattern Recognition · Computer Science 2011-09-27 Jia Zeng , Wei Feng , William K. Cheung , Chun-Hung Li

Graphs are essential representations of many real-world data such as social networks. Recent years have witnessed the increasing efforts made to extend the neural network models to graph-structured data. These methods, which are usually…

Machine Learning · Computer Science 2018-11-07 Yao Ma , Ziyi Guo , Zhaochun Ren , Eric Zhao , Jiliang Tang , Dawei Yin

Graph Neural Networks (GNNs) extend the success of neural networks to graph-structured data by accounting for their intrinsic geometry. While extensive research has been done on developing GNN models with superior performance according to a…

In the realm of personalization, integrating diverse information sources such as consumption signals and content-based representations is becoming increasingly critical to build state-of-the-art solutions. In this regard, two of the biggest…

Information Retrieval · Computer Science 2024-03-13 Andreas Damianou , Francesco Fabbri , Paul Gigioli , Marco De Nadai , Alice Wang , Enrico Palumbo , Mounia Lalmas

We describe a new method for summarizing similarities and differences in a pair of related documents using a graph representation for text. Concepts denoted by words, phrases, and proper names in the document are represented positionally as…

cmp-lg · Computer Science 2007-05-23 Inderjeet Mani , Eric Bloedorn

Though word embeddings and topics are complementary representations, several past works have only used pre-trained word embeddings in (neural) topic modeling to address data sparsity problem in short text or small collection of documents.…

Computation and Language · Computer Science 2019-09-18 Pankaj Gupta , Yatin Chaudhary , Hinrich Schütze

Graph neural networks (GNNs) have emerged as a powerful tool for effectively mining and learning from graph-structured data, with applications spanning numerous domains. However, most research focuses on static graphs, neglecting the…

Machine Learning · Computer Science 2024-04-30 Yanping Zheng , Lu Yi , Zhewei Wei

Cross-modal information retrieval aims to find heterogeneous data of various modalities from a given query of one modality. The main challenge is to map different modalities into a common semantic space, in which distance between concepts…

Information Retrieval · Computer Science 2018-02-14 Jing Yu , Yuhang Lu , Zengchang Qin , Yanbing Liu , Jianlong Tan , Li Guo , Weifeng Zhang

Deep learning has revolutionized many machine learning tasks in recent years, ranging from image classification and video processing to speech recognition and natural language understanding. The data in these tasks are typically represented…

Machine Learning · Computer Science 2020-03-27 Zonghan Wu , Shirui Pan , Fengwen Chen , Guodong Long , Chengqi Zhang , Philip S. Yu

Geometric Deep Learning has recently attracted significant interest in a wide range of machine learning fields, including document analysis. The application of Graph Neural Networks (GNNs) has become crucial in various document-related…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Andrea Gemelli , Sanket Biswas , Enrico Civitelli , Josep Lladós , Simone Marinai