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Temporal graph learning aims to generate high-quality representations for graph-based tasks with dynamic information, which has recently garnered increasing attention. In contrast to static graphs, temporal graphs are typically organized as…

机器学习 · 计算机科学 2024-04-30 Meng Liu , Ke Liang , Yawei Zhao , Wenxuan Tu , Sihang Zhou , Xinbiao Gan , Xinwang Liu , Kunlun He

Temporal data are naturally everywhere, especially in the digital era that sees the advent of big data and internet of things. One major challenge that arises during temporal data analysis and mining is the comparison of time series or…

机器学习 · 计算机科学 2017-11-15 Saeid Soheily-Khah , Pierre-François Marteau

Similarity-preserving hashing is a core technique for fast similarity searches, and it randomly maps data points in a metric space to strings of discrete symbols (i.e., sketches) in the Hamming space. While traditional hashing techniques…

数据结构与算法 · 计算机科学 2020-09-25 Shunsuke Kanda , Yasuo Tabei

We present a generic compact computational framework relying on structured random matrices that can be applied to speed up several machine learning algorithms with almost no loss of accuracy. The applications include new fast LSH-based…

机器学习 · 计算机科学 2016-06-07 Krzysztof Choromanski , Francois Fagan , Cedric Gouy-Pailler , Anne Morvan , Tamas Sarlos , Jamal Atif

Current research on human activity recognition (HAR) mainly assumes that training and testing data are drawn from the same distribution to achieve a generalised model, which means all the data are considered to be independent and…

信号处理 · 电气工程与系统科学 2025-03-05 Xiaozhou Ye , Kevin I-Kai Wang

We show that approximate similarity (near neighbour) search can be solved in high dimensions with performance matching state of the art (data independent) Locality Sensitive Hashing, but with a guarantee of no false negatives. Specifically,…

数据结构与算法 · 计算机科学 2018-06-28 Thomas Dybdahl Ahle

Open-Vocabulary Multi-Object Tracking (OV-MOT) aims to enable approaches to track objects without being limited to a predefined set of categories. Current OV-MOT methods typically rely primarily on instance-level detection and association,…

计算机视觉与模式识别 · 计算机科学 2025-03-12 Yunhao Li , Yifan Jiao , Dan Meng , Heng Fan , Libo Zhang

The explosive growth in big data has attracted much attention in designing efficient indexing and search methods recently. In many critical applications such as large-scale search and pattern matching, finding the nearest neighbors to a…

机器学习 · 计算机科学 2015-09-21 Jun Wang , Wei Liu , Sanjiv Kumar , Shih-Fu Chang

Spatio-temporal trajectory analytics is at the core of smart mobility solutions, which offers unprecedented information for diversified applications such as urban planning, infrastructure development, and vehicular networks. Trajectory…

数据结构与算法 · 计算机科学 2023-03-20 Danlei Hu , Lu Chen , Hanxi Fang , Ziquan Fang , Tianyi Li , Yunjun Gao

Many real world problems require fast and efficient lexical comparison of large numbers of short text strings. Search personalization is one such domain. We introduce the use of feature bit vectors using the hashing trick for improving…

信息检索 · 计算机科学 2019-10-22 Braddock Gaskill

This paper proposed a storing approach for trie structures, called coordinate hash trie. The basic idea is using a global hash table with a special hash function to store all edges of a trie. For a trie with $n$ nodes and an alphabet with…

数据结构与算法 · 计算机科学 2023-03-28 Yuxuan Dong

Similarity joins are important operations with a broad range of applications. In this paper, we study the problem of vector similarity join size estimation (VSJ). It is a generalization of the previously studied set similarity join size…

数据库 · 计算机科学 2011-04-19 Hongrae Lee , Raymond T. Ng , Kyuseok Shim

Tree-of-Thought (ToT) reasoning boosts the problem-solving abilities of Large Language Models (LLMs) but is computationally expensive due to semantic redundancy, where distinct branches explore equivalent reasoning paths. We introduce…

计算与语言 · 计算机科学 2025-12-09 Joongho Kim , Xirui Huang , Zarreen Reza , Gabriel Grand

In today's world of computers, dealing with huge amounts of data is not unusual. The need to distribute this data in order to increase its availability and increase the performance of accessing it is more urgent than ever. For these reasons…

数据结构与算法 · 计算机科学 2012-05-03 Aridj Mohamed , Zegour Djamel Eddine

Robust object tracking requires knowledge of tracked objects' appearance, motion and their evolution over time. Although motion provides distinctive and complementary information especially for fast moving objects, most of the recent…

计算机视觉与模式识别 · 计算机科学 2022-04-12 Hasan Saribas , Hakan Cevikalp , Okan Köpüklü , Bedirhan Uzun

The next location recommendation is at the core of various location-based applications. Current state-of-the-art models have attempted to solve spatial sparsity with hierarchical gridding and model temporal relation with explicit time…

信息检索 · 计算机科学 2021-02-09 Yingtao Luo , Qiang Liu , Zhaocheng Liu

A considerable amount of mobility data has been accumulated due to the proliferation of location-based service. Nevertheless, compared with mobility data from transportation systems like the GPS module in taxis, this kind of data is…

机器学习 · 计算机科学 2021-01-05 Tong Xia , Yunhan Qi , Jie Feng , Fengli Xu , Funing Sun , Diansheng Guo , Yong Li

Urban forecasting models often face a severe data imbalance problem: only a few cities have dense, long-span records, while many others expose short or incomplete histories. Direct transfer from data-rich to data-scarce cities is unreliable…

机器学习 · 计算机科学 2025-09-23 Yue Jiang , Chenxi Liu , Yile Chen , Qin Chao , Shuai Liu , Cheng Long , Gao Cong

$t$-SNE is an embedding method that the data science community has widely Two interesting characteristics of t-SNE are the structure preservation property and the answer to the crowding problem, where all neighbors in high dimensional space…

机器学习 · 计算机科学 2021-09-23 Gaëlle Candel , David Naccache

A large class of data questions can be modeled as identifying important slices of data driven by user defined metrics. This paper presents TRACE, a Time-Relational Approximate Cubing Engine that enables interactive analysis on such slices…

信息检索 · 计算机科学 2024-01-15 Suharsh Sivakumar , Jonathan Shen , Rajat Monga