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The widespread application of graph data in various high-risk scenarios has increased attention to graph anomaly detection (GAD). Faced with real-world graphs that often carry node descriptions in the form of raw text sequences, termed…

Machine Learning · Computer Science 2025-08-04 Yiming Xu , Xu Hua , Zhen Peng , Bin Shi , Jiarun Chen , Xingbo Fu , Song Wang , Bo Dong

Mixtures of Unigrams are one of the simplest and most efficient tools for clustering textual data, as they assume that documents related to the same topic have similar distributions of terms, naturally described by Multinomials. When the…

Machine Learning · Statistics 2020-12-10 Cinzia Viroli , Laura Anderlucci

Graph Anomaly Detection (GAD) aims to identify atypical graph entities, such as nodes, edges, or substructures, that deviate significantly from the majority. While existing text-rich approaches typically integrate structural context into…

Computation and Language · Computer Science 2026-05-20 Wen Shi , Zhe Wang , Huafei Huang , Qing Qing , Ziqi Xu , Qixin Zhang , Xikun Zhang , Renqiang Luo , Feng Xia

A fundamental obstacle to causal discovery from text is the lack of causally annotated text data for use as ground truth, due to high annotation costs. This motivates an important task of generating text with causal graph annotations. Early…

Computation and Language · Computer Science 2026-04-09 Wenshuo Wang , Boyu Cao , Nan Zhuang , Wei Li

We study the behavior of the clustering coefficient in tagged networks. The rich variety of tags associated with the nodes in the studied systems provide additional information about the entities represented by the nodes which can be…

Physics and Society · Physics 2012-05-31 Peter Pollner , Gergely Palla , Tamas Vicsek

Domain adaptive text classification is a challenging problem for the large-scale pretrained language models because they often require expensive additional labeled data to adapt to new domains. Existing works usually fails to leverage the…

Computation and Language · Computer Science 2022-06-22 Tian Li , Xiang Chen , Zhen Dong , Weijiang Yu , Yijun Yan , Kurt Keutzer , Shanghang Zhang

Causal effect identification using causal graphs is a fundamental challenge in causal inference. While extensive research has been conducted in this area, most existing methods assume the availability of fully specified directed acyclic…

Artificial Intelligence · Computer Science 2025-09-03 Simon Ferreira , Charles K. Assaad

A constant weight binary code consists of $n$-bit binary codewords, each with exactly $w$ bits equal to 1, such that any two codewords are at least Hamming distance $d$ apart. $A(n,d,w)$ is the maximum size of a constant weight binary code…

Information Theory · Computer Science 2026-03-03 Christopher D. Rosin

Text indexing is a classical algorithmic problem that has been studied for over four decades: given a text $T$, pre-process it off-line so that, later, we can quickly count and locate the occurrences of any string (the query pattern) in $T$…

Data Structures and Algorithms · Computer Science 2020-12-15 Nicola Prezza

The related work section is an important component of a scientific paper, which highlights the contribution of the target paper in the context of the reference papers. Authors can save their time and effort by using the automatically…

Computation and Language · Computer Science 2022-05-27 Xiuying Chen , Hind Alamro , Mingzhe Li , Shen Gao , Rui Yan , Xin Gao , Xiangliang Zhang

Large-alphabet strings are common in scenarios such as information retrieval and natural-language processing. The efficient storage and processing of such strings usually introduces several challenges that are not witnessed in…

Data Structures and Algorithms · Computer Science 2024-05-03 Diego Arroyuelo , Gabriel Carmona , Héctor Larrañaga , Francisco Riveros , Carlos Eugenio Rojas-Morales , Erick Sepúlveda

Deterministic variables are variables that are fully explained by one or more parent variables. They commonly arise when a variable has been algebraically constructed from one or more parent variables, as with composite variables, and in…

Despite the recent successes of deep neural networks, it remains challenging to achieve high precision keyword spotting task (KWS) on resource-constrained devices. In this study, we propose a novel context-aware and compact architecture for…

Sound · Computer Science 2019-12-12 Xi Chen , Shouyi Yin , Dandan Song , Peng Ouyang , Leibo Liu , Shaojun Wei

In recent years, graph theory has been widely employed to probe several language properties. More specifically, the so-called word adjacency model has been proven useful for tackling several practical problems, especially those relying on…

Computation and Language · Computer Science 2015-03-04 Diego R. Amancio

Recently directed acyclic graph (DAG) structure learning is formulated as a constrained continuous optimization problem with continuous acyclicity constraints and was solved iteratively through subproblem optimization. To further improve…

Machine Learning · Computer Science 2021-06-15 Yue Yu , Tian Gao , Naiyu Yin , Qiang Ji

The potential impact of a paper is often quantified by how many citations it will receive. However, most commonly used models may underestimate the influence of newly published papers over time, and fail to encapsulate this dynamics of…

Digital Libraries · Computer Science 2023-10-17 Guoxiu He , Zhikai Xue , Zhuoren Jiang , Yangyang Kang , Star Zhao , Wei Lu

Directed acyclic graphs (DAGs) are directed graphs in which there is no path from a vertex to itself. DAGs are an omnipresent data structure in computer science and the problem of counting the DAGs of given number of vertices and to sample…

Discrete Mathematics · Computer Science 2025-10-03 Martin Pépin , Alfredo Viola

Dynamic text-attributed graphs (DyTAGs) are prevalent in various real-world scenarios, where each node and edge are associated with text descriptions, and both the graph structure and text descriptions evolve over time. Despite their broad…

Artificial Intelligence · Computer Science 2024-11-05 Jiasheng Zhang , Jialin Chen , Menglin Yang , Aosong Feng , Shuang Liang , Jie Shao , Rex Ying

Word and graph embeddings are widely used in deep learning applications. We present a data structure that captures inherent hierarchical properties from an unordered flat embedding space, particularly a sense of direction between pairs of…

Computation and Language · Computer Science 2024-11-12 Xingzhi Guo , Steven Skiena

Data augmentation is essential when applying Machine Learning in small-data regimes. It generates new samples following the observed data distribution while increasing their diversity and variability to help researchers and practitioners…

Machine Learning · Computer Science 2023-04-10 Audrey Poinsot , Alessandro Leite