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This paper proposes a novel stock selection strategy framework based on combined machine learning algorithms. Two types of weighting methods for three representative machine learning algorithms are developed to predict the returns of the…

统计金融 · 定量金融 2025-08-27 Lin Cai , Zhiyang He , Caiya Zhang

Join processing is a fundamental operation in database management systems; however, traditional join algorithms often encounter efficiency challenges when dealing with complex queries that produce intermediate results much larger than the…

数据库 · 计算机科学 2025-05-27 Amirali Kaboli , Alex Mascolo , Amir Shaikhha

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

One of the most important problems in modern finance is finding efficient ways to summarize and visualize the stock market data to give individuals or institutions useful information about the market behavior for investment decisions. The…

数据库 · 计算机科学 2013-11-01 Radhakrishnan B , Shineraj G , Anver Muhammed K. M

Data warehouse architectural choices and optimization techniques are critical to decision support query performance. To facilitate these choices, the performance of the designed data warehouse must be assessed, usually with benchmarks.…

数据库 · 计算机科学 2017-01-03 Jérôme Darmont , Fadila Bentayeb , Omar Boussaïd

In this paper we have focused a variety of techniques, approaches and different areas of the research which are helpful and marked as the important field of data mining Technologies. As we are aware that many Multinational companies and…

数据库 · 计算机科学 2012-11-27 Neelamadhab Padhy , Dr. Pragnyaban Mishra , Rasmita Panigrahi

Indexing massive data sets is extremely expensive for large scale problems. In many fields, huge amounts of data are currently generated, however extracting meaningful information from voluminous data sets, such as computing similarity…

数据结构与算法 · 计算机科学 2017-03-27 Camille Marchet , Lolita Lecompte , Antoine Limasset , Lucie Bittner , Pierre Peterlongo

Query optimization has played a central role in database research for decades. However, more often than not, the proposed optimization techniques lead to a performance improvement in some, but not in all, situations. Therefore, we urgently…

The vast amounts of data collected in various domains pose great challenges to modern data exploration and analysis. To find "interesting" objects in large databases, users typically define a query using positive and negative example…

Growing demand for sustainable logistics and higher space utilization, driven by e-commerce and urbanization, increases the need for storage systems that are both energy- and space-efficient. Compact storage systems aim to maximize space…

计算复杂性 · 计算机科学 2025-10-16 Malte Fliedner , Julian Golak , Yağmur Gül , Simone Neumann

Owing to the significance of combinatorial search strategies both for academia and industry, the introduction of new techniques is a fast growing research field these days. These strategies have really taken different forms ranging from…

软件工程 · 计算机科学 2019-04-08 Bestoun S. Ahmed , Luca M. Gambardella , Kamal Z. Zamli

The multi-factor model is a widely used model in quantitative investment. The success of a multi-factor model is largely determined by the effectiveness of the alpha factors used in the model. This paper proposes a new evolutionary…

计算金融 · 定量金融 2020-04-07 Tianping Zhang , Yuanqi Li , Yifei Jin , Jian Li

Automated data insight mining and visualization have been widely used in various business intelligence applications (e.g., market analysis and product promotion). However, automated insight mining techniques often output the same mining…

人机交互 · 计算机科学 2025-03-11 Shangxuan Wu , Wendi Luan , Yong Wang , Dan Zeng , Qiaomu Shen , Bo Tang

The exponential growth of data storage demands has necessitated the evolution of hierarchical storage management strategies [1]. This study explores the application of streaming machine learning [3] to revolutionize data prefetching within…

分布式、并行与集群计算 · 计算机科学 2025-01-30 Chiyu Cheng , Chang Zhou , Yang Zhao , Jin Cao

With the rapid growth of global e-commerce, the demand for automation in the logistics industry is increasing. This study focuses on automated picking systems in warehouses, utilizing deep learning and reinforcement learning technologies to…

机器人学 · 计算机科学 2026-02-10 Keqin Li , Jin Wang , Xubo Wu , Xirui Peng , Runmian Chang , Xiaoyu Deng , Yiwen Kang , Yue Yang , Fanghao Ni , Bo Hong

Commercial off-the-shelf DataBase Management Systems (DBMSes) are highly optimized to process a wide range of queries by means of carefully designed indexing and query planning. However, many aggregate range queries are usually performed by…

数据库 · 计算机科学 2019-12-18 Diego Pennino , Maurizio Pizzonia , Alessio Papi

Business Intelligence plays an important role in decision making. Based on data warehouses and Online Analytical Processing, a business intelligence tool can be used to analyze complex data. Still, summarizability issues in data warehouses…

数据库 · 计算机科学 2013-09-02 Chantola Kit , Marouane Hachicha , Jérôme Darmont

Finding optimal join orders is among the most crucial steps to be performed by query optimisers. Though extensively studied in data management research, the problem remains far from solved: While query optimisers rely on exhaustive search…

数据库 · 计算机科学 2025-10-24 Manuel Schönberger , Immanuel Trummer , Wolfgang Mauerer

The common pipeline of training deep neural networks consists of several building blocks such as data augmentation and network architecture selection. AutoML is a research field that aims at automatically designing those parts, but most…

机器学习 · 计算机科学 2021-01-13 Taiga Kashima , Yoshihiro Yamada , Shunta Saito

Joinable Column Discovery is a critical challenge in automating enterprise data analysis. While existing approaches focus on syntactic overlap and semantic similarity, there remains limited understanding of which methods perform best for…