Journal of King Saud University-Computer and Information Sciences最新文献_第8页

RAPID: Robust multi-pAtch masker using channel-wise Pooled varIance with two-stage patch Detection RAPID：利用信道汇集变异和两级补丁检测的鲁棒多咀屏蔽器

IF 5.2 2区计算机科学

Journal of King Saud University-Computer and Information Sciences Pub Date : 2024-09-11 DOI: 10.1016/j.jksuci.2024.102188

Heemin Kim , Byeong-Chan Kim , Sumi Lee , Minjung Kang , Hyunjee Nam , Sunghwan Park , Il-Youp Kwak , Jaewoo Lee

{"title":"RAPID: Robust multi-pAtch masker using channel-wise Pooled varIance with two-stage patch Detection","authors":"Heemin Kim , Byeong-Chan Kim , Sumi Lee , Minjung Kang , Hyunjee Nam , Sunghwan Park , Il-Youp Kwak , Jaewoo Lee","doi":"10.1016/j.jksuci.2024.102188","DOIUrl":"10.1016/j.jksuci.2024.102188","url":null,"abstract":"<div><p>Recently, adversarial patches have become frequently used in adversarial attacks in real-world settings, evolving into various shapes and numbers. However, existing defense methods often exhibit limitations in addressing specific attacks, datasets, or conditions. This underscores the demand for versatile and robust defenses capable of operating across diverse scenarios. In this paper, we propose the RAPID (<strong>R</strong>obust multi-p<strong>A</strong>tch masker using channel-wise <strong>P</strong>ooled var<strong>I</strong>ance with two-stage patch <strong>D</strong>etection) framework, a stable solution to restore detection efficacy in the presence of multiple patches. The RAPID framework excels in defending against attacks regardless of patch number or shape, offering a versatile defense adaptable to diverse adversarial scenarios. RAPID employs a two-stage strategy to identify and mask coordinates associated with patch attacks. In the first stage, we propose the ‘channel-wise pooled variance’ to detect candidate patch regions. In the second step, upon detecting these regions, we identify dense areas as patches and mask them accordingly. This framework easily integrates into the preprocessing stage of any object detection model due to its independent structure, requiring no modifications to the model itself. Evaluation indicates that RAPID enhances robustness by up to 60% compared to other defenses. RAPID achieves mAP50 and mAP@50-95 values of 0.696 and 0.479, respectively.</p></div>","PeriodicalId":48547,"journal":{"name":"Journal of King Saud University-Computer and Information Sciences","volume":"36 8","pages":"Article 102188"},"PeriodicalIF":5.2,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1319157824002775/pdfft?md5=097312e661d7cf2bd4bcbc118fd164bd&pid=1-s2.0-S1319157824002775-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142169352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and FPGA implementation of nested grid multi-scroll chaotic system 嵌套网格多卷混沌系统的设计与 FPGA 实现

IF 5.2 2区计算机科学

Journal of King Saud University-Computer and Information Sciences Pub Date : 2024-09-10 DOI: 10.1016/j.jksuci.2024.102186

Guofeng Yu, Chunlei Fan, Jiale Xi, Chengbin Xu

{"title":"Design and FPGA implementation of nested grid multi-scroll chaotic system","authors":"Guofeng Yu, Chunlei Fan, Jiale Xi, Chengbin Xu","doi":"10.1016/j.jksuci.2024.102186","DOIUrl":"10.1016/j.jksuci.2024.102186","url":null,"abstract":"<div><p>Conventional multi-scroll chaotic systems are often constrained by the number of attractors and the complexity of generation, making it challenging to meet the increasing demands of communication and computation. This paper revolves around the modified Chua’s system. By modifying its differential equation and introducing traditional nonlinear functions, such as the step function sequence and sawtooth function sequence. A nested grid multi-scroll chaotic system (NGMSCS) can be established, capable of generating nested grid multi-scroll attractors. In contrast to conventional grid multi-scroll chaotic attractors, scroll-like phenomena can be initiated outside the grid structure, thereby revealing more complex dynamic behavior and topological features. Through the theoretical design and analysis of the equilibrium point of the system and its stability, the number of saddle-focused equilibrium points of index 2 is further expanded, which can generate (2 N+2) × M attractors, and the formation mechanism is elaborated and verified in detail. In addition, the generation of an arbitrary number of equilibrium points in the <em>y</em>-direction is achieved by transforming the <em>x</em> and <em>y</em> variables, which can generate M×(2 N+2) attractors, increasing the complexity of the system. The system’s dynamical properties are discussed in depth via time series plots, Lyapunov exponents, Poincaré cross sections, 0–1 tests, bifurcation diagrams, and attraction basins. The existence of attractors is confirmed through numerical simulations and FPGA-based hardware experiments.</p></div>","PeriodicalId":48547,"journal":{"name":"Journal of King Saud University-Computer and Information Sciences","volume":"36 8","pages":"Article 102186"},"PeriodicalIF":5.2,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1319157824002751/pdfft?md5=5a97268ac1950c4cb177bec835b9c871&pid=1-s2.0-S1319157824002751-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142233768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Towards the development of believable agents: Adopting neural architectures and adaptive neuro-fuzzy inference system via playback of human traces 开发可信的代理：通过回放人类痕迹采用神经架构和自适应神经模糊推理系统

IF 5.2 2区计算机科学

Journal of King Saud University-Computer and Information Sciences Pub Date : 2024-09-02 DOI: 10.1016/j.jksuci.2024.102182

Naveed Anwer Butt , Mian Muhammad Awais , Samra Shahzadi , Tai-hoon Kim , Imran Ashraf

{"title":"Towards the development of believable agents: Adopting neural architectures and adaptive neuro-fuzzy inference system via playback of human traces","authors":"Naveed Anwer Butt , Mian Muhammad Awais , Samra Shahzadi , Tai-hoon Kim , Imran Ashraf","doi":"10.1016/j.jksuci.2024.102182","DOIUrl":"10.1016/j.jksuci.2024.102182","url":null,"abstract":"<div><p>Artificial intelligence (AI) research on video games primarily focused on the imitation of human-like behavior during the past few years. Moreover, to increase the perceived worth of amusement and gratification, there is an enormous rise in the demand for intelligent agents that can imitate human players and video game characters. However, the agents developed using the majority of current approaches are perceived as rather more mechanical, which leads to frustration, and more importantly, failure in engagement. On that account, this study proposes an imitation learning framework to generate human-like behavior for more precise and accurate reproduction. To build a computational model, two learning paradigms are explored, artificial neural networks (ANN) and adaptive neuro-fuzzy inference systems (ANFIS). This study utilized several variations of ANN, including feed-forward, recurrent, extreme learning machines, and regressions, to simulate human player behavior. Furthermore, to find the ideal ANFIS, grid partitioning, subtractive clustering, and fuzzy c-means clustering are used for training. The results demonstrate that ANFIS hybrid intelligence systems trained with subtractive clustering are overall best with an average accuracy of 95%, followed by fuzzy c-means with an average accuracy of 87%. Also, the believability of the obtained AI agents is tested using two statistical methods, i.e., the Mann–Whitney U test and the cosine similarity analysis. Both methods validate that the observed behavior has been reproduced with high accuracy.</p></div>","PeriodicalId":48547,"journal":{"name":"Journal of King Saud University-Computer and Information Sciences","volume":"36 8","pages":"Article 102182"},"PeriodicalIF":5.2,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1319157824002714/pdfft?md5=542b4e8449657f4dbd195276e5fb54c1&pid=1-s2.0-S1319157824002714-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

GCNT: Identify influential seed set effectively in social networks by integrating graph convolutional networks with graph transformers GCNT：通过将图卷积网络与图转换器整合，有效识别社交网络中具有影响力的种子集

IF 5.2 2区计算机科学

Journal of King Saud University-Computer and Information Sciences Pub Date : 2024-09-02 DOI: 10.1016/j.jksuci.2024.102183

Jianxin Tang , Jitao Qu , Shihui Song , Zhili Zhao , Qian Du

{"title":"GCNT: Identify influential seed set effectively in social networks by integrating graph convolutional networks with graph transformers","authors":"Jianxin Tang , Jitao Qu , Shihui Song , Zhili Zhao , Qian Du","doi":"10.1016/j.jksuci.2024.102183","DOIUrl":"10.1016/j.jksuci.2024.102183","url":null,"abstract":"<div><p>Exploring effective and efficient strategies for identifying influential nodes from social networks as seeds to promote the propagation of influence remains a crucial challenge in the field of influence maximization (IM), which has attracted significant research efforts. Deep learning-based approaches have been adopted as an alternative promising solution to the IM problem. However, a robust model that captures the associations between network information and node influence needs to be investigated, while concurrently considering the effects of the overlapped influence on training labels. To address these challenges, a GCNT model, which integrates Graph Convolutional Networks with Graph Transformers, is introduced in this paper to capture the intricate relationships among the topology of the network, node attributes, and node influence effectively. Furthermore, an innovative method called <span><math><mrow><mi>G</mi><mi>r</mi><mi>e</mi><mi>e</mi><mi>d</mi><mi>y</mi></mrow></math></span>-<span><math><mrow><mi>L</mi><mi>I</mi><mi>E</mi></mrow></math></span> is proposed to generate labels to alleviate the issue of overlapped influence spread. Moreover, a Mask mechanism specially tailored for the IM problem is presented along with an input embedding balancing strategy. The effectiveness of the GCNT model is demonstrated through comprehensive experiments conducted on six real-world networks, and the model shows its competitive performance in terms of both influence maximization and computational efficiency over state-of-the-art methods.</p></div>","PeriodicalId":48547,"journal":{"name":"Journal of King Saud University-Computer and Information Sciences","volume":"36 8","pages":"Article 102183"},"PeriodicalIF":5.2,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1319157824002726/pdfft?md5=fb687d0a26ab54db6f7c889e608384a1&pid=1-s2.0-S1319157824002726-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142149684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Learning-driven Data Fabric Trends and Challenges for cloud-to-thing continuum 学习驱动的数据架构趋势与挑战，实现从云到物的连续性

IF 5.2 2区计算机科学

Journal of King Saud University-Computer and Information Sciences Pub Date : 2024-09-01 DOI: 10.1016/j.jksuci.2024.102145

Praveen Kumar Donta , Chinmaya Kumar Dehury , Yu-Chen Hu

{"title":"Learning-driven Data Fabric Trends and Challenges for cloud-to-thing continuum","authors":"Praveen Kumar Donta , Chinmaya Kumar Dehury , Yu-Chen Hu","doi":"10.1016/j.jksuci.2024.102145","DOIUrl":"10.1016/j.jksuci.2024.102145","url":null,"abstract":"<div><p>This special issue is a collection of emerging trends and challenges in applying learning-driven approaches to data fabric architectures within the cloud-to-thing continuum. As data generation and processing increasingly occur at the edge, there is a growing need for intelligent, adaptive data management solutions that seamlessly operate across distributed environments. In this special issue, we received research contributions from various groups around the world. We chose the eight most appropriate and novel contributions to include in this special issue. These eight contributions were further categorized into three themes: Data Handling approaches, resource optimization and management, and security and attacks. Additionally, this editorial suggests future research directions that will potentially lead to groundbreaking insights, which could pave the way for a new era of learning techniques in Data Fabric and the Cloud-to-Thing Continuum.</p></div>","PeriodicalId":48547,"journal":{"name":"Journal of King Saud University-Computer and Information Sciences","volume":"36 7","pages":"Article 102145"},"PeriodicalIF":5.2,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1319157824002349/pdfft?md5=286285bbd5dfa0b63dd8785bf5349c2e&pid=1-s2.0-S1319157824002349-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142230508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EETS: An energy-efficient task scheduler in cloud computing based on improved DQN algorithm EETS：基于改进的 DQN 算法的云计算高能效任务调度器

IF 5.2 2区计算机科学

Journal of King Saud University-Computer and Information Sciences Pub Date : 2024-08-31 DOI: 10.1016/j.jksuci.2024.102177

Huanhuan Hou , Azlan Ismail

{"title":"EETS: An energy-efficient task scheduler in cloud computing based on improved DQN algorithm","authors":"Huanhuan Hou , Azlan Ismail","doi":"10.1016/j.jksuci.2024.102177","DOIUrl":"10.1016/j.jksuci.2024.102177","url":null,"abstract":"<div><p>The huge energy consumption of data centers in cloud computing leads to increased operating costs and high carbon emissions to the environment. Deep Reinforcement Learning (DRL) technology combines of deep learning and reinforcement learning, which has an obvious advantage in solving complex task scheduling problems. Deep Q Network(DQN)-based task scheduling has been employed for objective optimization. However, training the DQN algorithm may result in value overestimation, which can negatively impact the learning effectiveness. The replay buffer technique, while increasing sample utilization, does not distinguish between sample importance, resulting in limited utilization of valuable samples. This study proposes an enhanced task scheduling algorithm based on the DQN framework, which utilizes a more optimized Dueling-network architecture as well as Double DQN strategy to alleviate the overestimation bias and address the shortcomings of DQN. It also incorporates a prioritized experience replay technique to achieve importance sampling of experience data, which overcomes the problem of low utilization due to uniform sampling from replay memory. Based on these improved techniques, we developed an energy-efficient task scheduling algorithm called EETS (Energy-Efficient Task Scheduling). This algorithm automatically learns the optimal scheduling policy from historical data while interacting with the environment. Experimental results demonstrate that EETS exhibits faster convergence rates and higher rewards compared to both DQN and DDQN. In scheduling performance, EETS outperforms other baseline algorithms in key metrics, including energy consumption, average task response time, and average machine working time. Particularly, it has a significant advantage when handling large batches of tasks.</p></div>","PeriodicalId":48547,"journal":{"name":"Journal of King Saud University-Computer and Information Sciences","volume":"36 8","pages":"Article 102177"},"PeriodicalIF":5.2,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1319157824002660/pdfft?md5=a86e26e6d8a0d8a013697db9338917a5&pid=1-s2.0-S1319157824002660-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142149683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Establishing a multimodal dataset for Arabic Sign Language (ArSL) production 建立阿拉伯手语（ArSL）制作的多模态数据集

IF 5.2 2区计算机科学

Journal of King Saud University-Computer and Information Sciences Pub Date : 2024-08-30 DOI: 10.1016/j.jksuci.2024.102165

Samah Abbas , Dimah Alahmadi , Hassanin Al-Barhamtoshy

{"title":"Establishing a multimodal dataset for Arabic Sign Language (ArSL) production","authors":"Samah Abbas , Dimah Alahmadi , Hassanin Al-Barhamtoshy","doi":"10.1016/j.jksuci.2024.102165","DOIUrl":"10.1016/j.jksuci.2024.102165","url":null,"abstract":"<div><p>This paper addresses the potential of Arabic Sign Language (ArSL) recognition systems to facilitate direct communication and enhance social engagement between deaf and non-deaf. Specifically, we focus on the domain of religion to address the lack of accessible religious content for the deaf community. We propose a multimodal architecture framework and develop a novel dataset for ArSL production. The dataset comprises 1950 audio signals with corresponding 131 texts, including words and phrases, and 262 ArSL videos. These videos were recorded by two expert signers and annotated using ELAN based on gloss representation. To evaluate ArSL videos, we employ Cosine similarities and mode distances based on MobileNetV2 and Euclidean distance based on MediaPipe. Additionally, we implement Jac card Similarity to evaluate the gloss representation, resulting in an overall similarity score of 85% between the glosses of the two ArSL videos. The evaluation highlights the complexity of creating an ArSL video corpus and reveals slight differences between the two videos. The findings emphasize the need for careful annotation and representation of ArSL videos to ensure accurate recognition and understanding. Overall, it contributes to bridging the gap in accessible religious content for deaf community by developing a multimodal framework and a comprehensive ArSL dataset.</p></div>","PeriodicalId":48547,"journal":{"name":"Journal of King Saud University-Computer and Information Sciences","volume":"36 8","pages":"Article 102165"},"PeriodicalIF":5.2,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1319157824002544/pdfft?md5=301cc3d87bf22d8e207fb35edd191aea&pid=1-s2.0-S1319157824002544-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142136337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DeepExtract: Semantic-driven extractive text summarization framework using LLMs and hierarchical positional encoding DeepExtract：使用 LLM 和分层位置编码的语义驱动提取式文本摘要框架

IF 5.2 2区计算机科学

Journal of King Saud University-Computer and Information Sciences Pub Date : 2024-08-30 DOI: 10.1016/j.jksuci.2024.102178

Aytuğ Onan , Hesham A. Alhumyani

{"title":"DeepExtract: Semantic-driven extractive text summarization framework using LLMs and hierarchical positional encoding","authors":"Aytuğ Onan , Hesham A. Alhumyani","doi":"10.1016/j.jksuci.2024.102178","DOIUrl":"10.1016/j.jksuci.2024.102178","url":null,"abstract":"<div><p>In the age of information overload, the ability to distill essential content from extensive texts is invaluable. DeepExtract introduces an advanced framework for extractive summarization, utilizing the groundbreaking capabilities of GPT-4 along with innovative hierarchical positional encoding to redefine information extraction. This manuscript details the development of DeepExtract, which integrates semantic-driven techniques to analyze and summarize complex documents effectively. The framework is structured around a novel hierarchical tree construction that categorizes sentences and sections not just by their physical placement within a text, but by their contextual and thematic significance, leveraging dynamic embeddings generated by GPT-4. We introduce a multi-faceted scoring system that evaluates sentences based on coherence, relevance, and novelty, ensuring that summaries are not only concise but rich with essential content. Further, DeepExtract employs optimized semantic clustering to group thematic elements, which enhances the representativeness of the summaries. This paper demonstrates through comprehensive evaluations that DeepExtract significantly outperforms existing extractive summarization models in terms of accuracy and efficiency, making it a potent tool for academic, professional, and general use. We conclude with a discussion on the practical applications of DeepExtract in various domains, highlighting its adaptability and potential in navigating the vast expanses of digital text.</p></div>","PeriodicalId":48547,"journal":{"name":"Journal of King Saud University-Computer and Information Sciences","volume":"36 8","pages":"Article 102178"},"PeriodicalIF":5.2,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1319157824002672/pdfft?md5=ee7790d3716e8b2a6454863f15695239&pid=1-s2.0-S1319157824002672-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142098684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unsupervised selective labeling for semi-supervised industrial defect detection 用于半监督工业缺陷检测的无监督选择性标记

IF 5.2 2区计算机科学

Journal of King Saud University-Computer and Information Sciences Pub Date : 2024-08-30 DOI: 10.1016/j.jksuci.2024.102179

Jian Ge , Qin Qin , Shaojing Song , Jinhua Jiang , Zhiwei Shen

{"title":"Unsupervised selective labeling for semi-supervised industrial defect detection","authors":"Jian Ge , Qin Qin , Shaojing Song , Jinhua Jiang , Zhiwei Shen","doi":"10.1016/j.jksuci.2024.102179","DOIUrl":"10.1016/j.jksuci.2024.102179","url":null,"abstract":"<div><p>In industrial detection scenarios, achieving high accuracy typically relies on extensive labeled datasets, which are costly and time-consuming. This has motivated a shift towards semi-supervised learning (SSL), which leverages labeled and unlabeled data to improve learning efficiency and reduce annotation costs. This work proposes the unsupervised spectral clustering labeling (USCL) method to optimize SSL for industrial challenges like defect variability, rarity, and complex distributions. Integral to USCL, we employ the multi-task fusion self-supervised learning (MTSL) method to extract robust feature representations through multiple self-supervised tasks. Additionally, we introduce the Enhanced Spectral Clustering (ESC) method and a dynamic selecting function (DSF). ESC effectively integrates both local and global similarity matrices, improving clustering accuracy. The DSF maximally selects the most valuable instances for labeling, significantly enhancing the representativeness and diversity of the labeled data. USCL consistently improves various SSL methods compared to traditional instance selection methods. For example, it boosts Efficient Teacher by 5%, 6.6%, and 7.8% in mean Average Precision(mAP) on the Automotive Sealing Rings Defect Dataset, the Metallic Surface Defect Dataset, and the Printed Circuit Boards (PCB) Defect Dataset with 10% labeled data. Our work sets a new benchmark for SSL in industrial settings.</p></div>","PeriodicalId":48547,"journal":{"name":"Journal of King Saud University-Computer and Information Sciences","volume":"36 8","pages":"Article 102179"},"PeriodicalIF":5.2,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1319157824002684/pdfft?md5=2e9ae7d3bfac3922191cefd8f900c5a6&pid=1-s2.0-S1319157824002684-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142117390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An efficient hybrid approach for forecasting real-time stock market indices 预测实时股票市场指数的高效混合方法

IF 5.2 2区计算机科学

Journal of King Saud University-Computer and Information Sciences Pub Date : 2024-08-29 DOI: 10.1016/j.jksuci.2024.102180

Riya Kalra , Tinku Singh , Suryanshi Mishra , Satakshi , Naveen Kumar , Taehong Kim , Manish Kumar

{"title":"An efficient hybrid approach for forecasting real-time stock market indices","authors":"Riya Kalra , Tinku Singh , Suryanshi Mishra , Satakshi , Naveen Kumar , Taehong Kim , Manish Kumar","doi":"10.1016/j.jksuci.2024.102180","DOIUrl":"10.1016/j.jksuci.2024.102180","url":null,"abstract":"<div><p>The stock market’s volatility, noise, and information overload necessitate efficient prediction methods. Forecasting index prices in this environment is complex due to the non-linear and non-stationary nature of time series data generated from the stock market. Machine learning and deep learning have emerged as powerful tools for identifying financial data patterns and generating predictions based on historical trends. However, updating these models in real-time is crucial for accurate predictions. Deep learning models require extensive computational resources and careful hyperparameter optimization, while incremental learning models struggle to balance stability and adaptability. This paper proposes a novel hybrid bidirectional-LSTM (H.BLSTM) model that combines incremental learning and deep learning techniques for real-time index price prediction, addressing these scalability and memory challenges. The method utilizes both univariate time series derived from historical index prices and multivariate time series incorporating technical indicators. Implementation within a real-time trading system demonstrates the method’s effectiveness in achieving more accurate price forecasts for major stock indices globally through extensive experimentation. The proposed model achieved an average mean absolute percentage error of 0.001 across nine stock indices, significantly outperforming traditional models. It has an average forecasting delay of 2 s, making it suitable for real-time trading applications.</p></div>","PeriodicalId":48547,"journal":{"name":"Journal of King Saud University-Computer and Information Sciences","volume":"36 8","pages":"Article 102180"},"PeriodicalIF":5.2,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1319157824002696/pdfft?md5=990fa1b67fa197073ed336d80589c08c&pid=1-s2.0-S1319157824002696-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142098691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0