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The discovery of utility-driven patterns is a useful and difficult research topic. It can extract significant and interesting information from specific and varied databases, increasing the value of the services provided. In practice, the…

数据库 · 计算机科学 2022-12-21 Gengsen Huang , Wensheng Gan , Philip S. Yu

This study introduces a novel hierarchical divisive clustering approach with stochastic splitting functions (SSFs) to enhance classification performance in multi-class datasets through hierarchical classification (HC). The method has the…

机器学习 · 计算机科学 2023-09-22 Celal Alagoz

In the field of exploratory data mining, local structure in data can be described by patterns and discovered by mining algorithms. Although many solutions have been proposed to address the redundancy problems in pattern mining, most of them…

机器学习 · 统计学 2017-04-28 Vladimir Dzyuba , Matthijs van Leeuwen

With the rapid growth of internet technologies, Web has become a huge repository of information and keeps growing exponentially under no editorial control. However the human capability to read, access and understand Web content remains…

数据库 · 计算机科学 2011-11-11 C. Ramesh , K. V. Chalapati Rao , A. Govardhan

We present a new distribution-free conformal prediction algorithm for sequential data (e.g., time series), called the \textit{sequential predictive conformal inference} (\texttt{SPCI}). We specifically account for the nature that time…

机器学习 · 统计学 2023-05-31 Chen Xu , Yao Xie

Organisations store huge amounts of data from multiple heterogeneous sources in the form of Knowledge Graphs (KGs). One of the ways to query these KGs is to use SPARQL queries over a database engine. Since SPARQL follows exact match…

数据库 · 计算机科学 2017-11-22 Madhulika Mohanty , Maya Ramanath , Mohamed Yahya , Gerhard Weikum

Statistically significant patterns mining (SSPM) is an essential and challenging data mining task in the field of knowledge discovery in databases (KDD), in which each pattern is evaluated via a hypothesis test. Our study aims to introduce…

统计方法学 · 统计学 2020-08-26 Thien Q. Tran , Kazuto Fukuchi , Youhei Akimoto , Jun Sakuma

While projection-based reduced order models can reduce the dimension of full order solutions, the resulting reduced models may still contain terms that scale with the full order dimension. Hyper-reduction techniques are sampling-based…

Pattern set mining, which is the task of finding a good set of patterns instead of all patterns, is a fundamental problem in data mining. Many different definitions of what constitutes a good set have been proposed in recent years. In this…

数据库 · 计算机科学 2025-07-14 Maiju Karjalainen , Pauli Miettinen

Beam search is the default decoding strategy for many sequence generation tasks in NLP. The set of approximate K-best items returned by the algorithm is a useful summary of the distribution for many applications; however, the candidates…

计算与语言 · 计算机科学 2023-03-03 Clara Meister , Afra Amini , Tim Vieira , Ryan Cotterell

All pairs similarity search is a problem where a set of data objects is given and the task is to find all pairs of objects that have similarity above a certain threshold for a given similarity measure-of-interest. When the number of points…

信息检索 · 计算机科学 2016-06-29 Aniket Chakrabarti , Srinivasan Parthasarathy

Sequential recommendation is an important task to predict the next-item to access based on a sequence of interacted items. Most existing works learn user preference as the transition pattern from the previous item to the next one, ignoring…

信息检索 · 计算机科学 2023-12-19 Yizhou Dang , Enneng Yang , Guibing Guo , Linying Jiang , Xingwei Wang , Xiaoxiao Xu , Qinghui Sun , Hong Liu

Hash table search strategies have remained a pivotal area of inquiry in computer science over the past several decades. A prevailing viewpoint asserts that random probing stands as the optimal method for open-addressing hash tables.…

数据结构与算法 · 计算机科学 2025-03-24 Qiantong Wang

Discovering relevant patterns for a particular user remains a challenging tasks in data mining. Several approaches have been proposed to learn user-specific pattern ranking functions. These approaches generalize well, but at the expense of…

人工智能 · 计算机科学 2022-03-08 Nassim Belmecheri , Noureddine Aribi , Nadjib Lazaar , Yahia Lebbah , Samir Loudni

Ranking is a central task in machine learning and information retrieval. In this task, it is especially important to present the user with a slate of items that is appealing as a whole. This in turn requires taking into account interactions…

信息检索 · 计算机科学 2019-03-21 Irwan Bello , Sayali Kulkarni , Sagar Jain , Craig Boutilier , Ed Chi , Elad Eban , Xiyang Luo , Alan Mackey , Ofer Meshi

We consider the problem of discovering sequential patterns from event-based spatio-temporal data. The dataset is described by a set of event types and their instances. Based on the given dataset, the task is to discover all significant…

数据库 · 计算机科学 2017-07-04 Piotr S. Maciąg

We present paired learning and inference algorithms for significantly reducing computation and increasing speed of the vector dot products in the classifiers that are at the heart of many NLP components. This is accomplished by partitioning…

计算与语言 · 计算机科学 2015-05-25 Emma Strubell , Luke Vilnis , Kate Silverstein , Andrew McCallum

Graph pattern matching is a fundamental operation for the analysis and exploration ofdata graphs. In thispaper, we presenta novel approachfor efficiently finding homomorphic matches for hybrid graph patterns, where each pattern edge may be…

数据库 · 计算机科学 2022-09-29 Xiaoying Wu , Dimitri Theodoratos , Nikos Mamoulis , Michael Lan

Conformal predictions make it possible to define reliable and robust learning algorithms. But they are essentially a method for evaluating whether an algorithm is good enough to be used in practice. To define a reliable learning framework…

Traditional sequential recommendation (SR) methods heavily rely on explicit item IDs to capture user preferences over time. This reliance introduces critical limitations in cold-start scenarios and domain transfer tasks, where unseen items…

信息检索 · 计算机科学 2025-02-20 Wuhan Chen , Zongwei Wang , Min Gao , Xin Xia , Feng Jiang , Junhao Wen