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BMLP:behavior-aware MLP for heterogeneous sequential recommendation

Frontiers of computer science 2024年第3期18卷 235-237页

作者： Weixin LI Yuhao WU Yang LIU Weike PAN Zhong MING College of Computer Science and Software Engineering Shenzhen UniversityShenzhen 518060China Guangdong Laboratory of Artificial Intelligence and Digital Economy(SZ) Shenzhen 518123China

1 Introduction Recommender systems can effectively alleviate the problem of information ***,traditional recommendation methods cannot capture users’dynamic *** recommendation methods model user sequences to obtain more accurate and dynamic user ***,deep learning-based sequential recommendation methods have achieved great *** is proposed to capture the sequential information[1,2].Attention-based methods[3]use attention mechanisms to learn relationships between ***-based methods[4−6]transform sequences into graph structures to capture relationships of ***,they have the following two limitations.

关键词： sequences behavior sequential

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ChemDFM-X: towards large multimodal model for chemistry

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science China(Information sciences) 2024年第12期67卷 99-100页

作者： Zihan ZHAO Bo CHEN Jingpiao LI Lu CHEN Liyang WEN Pengyu WANG Zichen ZHU Danyang ZHANG Yansi LI Zhongyang DAI Xin CHEN Kai YU X-LANCE Lab Department of Computer Science and EngineeringMoE Key Lab of Artificial Intelligence AI Institute Shanghai Jiao Tong University Suzhou Laboratory

Chemistry, as a naturally multimodal discipline, plays a crucial role in various vital fields such as pharmaceutical research and material manufacturing. Therefore, research on artificial intelligence(AI) for chemistry has garnered increasing attention. Despite the rapid development, most of the chemical AI models today mainly focus on single tasks with unimodal input [1].

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A hybrid feature selection method for text classification using a feature-correlation-based genetic algorithm

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Soft Computing 2024年第23期28卷 13567-13593页

作者： Farek, Lazhar Benaidja, Amira Computer Science Department University of Guelma Guelma Algeria Computer Science Department University of Setif 1 Setif Algeria Laboratory of Vision and Artificial Intelligence - LAVIA Larbi Tebessi University Tebessa Algeria

This paper introduces a new hybrid method to address the issue of redundant and irrelevant features selected by filter-based methods for text classification. The method utilizes an enhanced genetic algorithm called "Feature Correlation-based Genetic Algorithm" (FC-GA). Initially, a feature subset with the highest classification accuracy is selected by a filter-based method, which will be then used by the FC-GA to generate potential solutions by considering the correlation between features that have similar classification weights and avoiding useless random solutions. The encoding process involves assigning a value of 0 to features that provide a high degree of correlation with other features having almost the same classification information beyond a specified context, while features that are lowly correlated retain their initial code of 1. Through iterative optimization using crossover and mutation operators, the algorithm should remove redundant features that provide strong correlations and high redundancy, which could lead to improved classification performance at a lower computation cost. The aim of this study is to improve the efficiency of filter-based methods, incorporate feature correlation information into genetic algorithms, and utilize pre-optimized feature subsets to efficiently identify optimal solutions. To evaluate the effectiveness of the proposed method, SVM and NB classifiers are employed on six public datasets and compared to five well-known and effective filter-based methods. The results indicate that a significant portion (about 50%) of the features selected by reference filter-based methods are redundant. Eliminating those redundant features leads to a significant improvement in classification performance as measured by the micro-f1 measure. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Genetic algorithms

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Investigating Student's Problem-solving Approaches in MOOCs using Natural Language Processing 2023

Investigating Student's Problem-solving Approaches in MOOCs ...

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13th International Conference on Learning Analytics and Knowledge: Towards Trustworthy Learning Analytics, LAK 2023

作者： Kong, Byeongjo Hemberg, Erik Bell, Ana O'Reilly, Una-May MIT Computer Science & Artificial Intelligence Laboratory United States

ISBN: (纸本)9781450398657

Problem-solving approaches are an essential part of learning. Knowing how students approach solving problems can help instructors improve their instructional designs and effectively guide the learning process of students. We propose a natural language processing (NLP) driven method to capture online learners' problem-solving approaches at scale while using Massive Open Online Courses (MOOCs) as a learning platform. We employ an online survey to gather data, NLP techniques, and existing educational theories to investigate this in the lens of both computer science and education. The paper shows how NLP techniques, i.e. preprocessing, topic modeling, and text summarization, must be tuned to extract information from a large-scale text corpus. The proposed method discovered 18 problem-solving approaches from the text data, such as using pen and paper, peer learning, trial and error, etc. We also observed topics that appear over the years, such as clarifying code logic, watching videos, etc. We observed that students heavily rely on "tools"for solving programming problems and can expect that such selection of methods can vary depending on the type of task. © 2023 ACM.

关键词： Students

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Enhanced Autonomous Mobile Robot Navigation Using a Hybrid BFO/PSO Algorithm for Dynamic Obstacle Avoidance

Informatica (Slovenia)

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Informatica (Slovenia) 2024年第17期48卷 209-222页

作者： Makhlouf, Amina Benmachiche, Abdelmadjid Boutabia, Ines LIMA Laboratory Dept. of Computer Science Faculty of science and technology House of Artificial Intelligence Chadli Bendjedid University El-Tarf PB 73 Algeria36000 Algeria

Determining path planning for mobile robots has received a lot of attention over the last three decades, with the goal of identifying safe and effective paths between starting points and destinations. The investigation of diverse navigation methodologies exhibits potential in expanding the range of uses for autonomous mobile robots. This research introduces a novel navigation strategy by combining the Particle Swarm Optimization (PSO) method with the Bacteria Foraging Optimization Algorithm (BFO). Utilizing the benefits of PSO, this bio-inspired method is used to optimize paths for mobile robots, drawing inspiration from the foraging behavior of bacteria, namely E. coli. The principal aim of this study is to design routes that are practical and safe. The proposed model features a robot that emulates bacterial foraging behavior to determine the most optimal path through environments densely populated with obstacles, effectively linking a starting point to a specified destination. This strategy has been implemented and rigorously evaluated across a variety of scenarios. Experimental results reveal that the hybrid BFO-PSO algorithm achieves a success rate exceeding 90% in navigating dynamic environments. Furthermore, the algorithm significantly outperforms traditional methods, offering approximately 50% less computational speed, efficiency, and superior security metrics, confirming its effectiveness and potential for real-world applications. © 2024 Slovene Society Informatika. All rights reserved.

关键词： Escherichia coli

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A Privacy Preservation Method for Attributed Social Network Based on Negative Representation of Information

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computer Modeling in Engineering & sciences 2024年第7期140卷 1045-1075页

作者： Hao Jiang Yuerong Liao Dongdong Zhao Wenjian Luo Xingyi Zhang Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education School of Computer Science and TechnologyAnhui UniversityHefei230601China Chongqing Research Institute School of Computer Science and Artificial IntelligenceWuhan University of TechnologyWuhan430070China Guangdong Provincial Key Laboratory of Novel Security Intelligence Technologies School of Computer Science and TechnologyHarbin Institute of TechnologyShenzhen518055China

Due to the presence of a large amount of personal sensitive information in social networks,privacy preservation issues in social networks have attracted the attention of many *** by the self-nonself discrimination paradigmin the biological immune system,the negative representation of information indicates features such as simplicity and efficiency,which is very suitable for preserving social network ***,we suggest a method to preserve the topology privacy and node attribute privacy of attribute social networks,called ***,a negative survey-based method is developed to disturb the relationship between nodes in the social network so that the topology structure can be kept ***,a negative database-based method is proposed to hide node attributes,so that the privacy of node attributes can be preserved while supporting the similarity estimation between different node attributes,which is crucial to the analysis of social *** evaluate the performance of the AttNetNRI,empirical studies have been conducted on various attribute social networks and compared with several state-of-the-art methods tailored to preserve the privacy of social *** experimental results show the superiority of the developed method in preserving the privacy of attribute social networks and demonstrate the effectiveness of the topology disturbing and attribute hiding *** experimental results show the superiority of the developed methods in preserving the privacy of attribute social networks and demonstrate the effectiveness of the topological interference and attribute-hiding components.

关键词： Attributed social network topology privacy node attribute privacy negative representation of information negative survey negative database

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Knowledge As Not Only Justified True Beliefs in Vision

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IEEE/CAA Journal of Automatica Sinica 2025年第2期12卷 297-299页

作者： Wenbo Zheng Fei-Yue Wang IEEE School of Computer Science and Artificial Intelligence Wuhan University of Technology Sanya Science and Education Innovation Park of Wuhan University of Technology the State Key Laboratory for Management and Control of Complex Systems Institute of Automation Chinese Academy of Sciences

COMPUTATIONAL knowledge vision [1] is emphasized as a novel perspective or field in this paper. It first proposes the visual hierarchy and its connection to knowledge, stating that knowledge is a justified true belief. To further the previous research, we concisely summarize our recent works and suggest a new direction that knowledge is also a thought framework in vision.

关键词： Computational modeling Visualization artificial intelligence Data models Visual perception Visual databases Training data

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Leveraging Spark-TensorFlow Distributor for Distributed Deep Convolutional Neural Networks: Accelerating large-scale COVID-19 Detection

Informatica (Slovenia)

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Informatica (Slovenia) 2025年第17期49卷 173-188页

作者： Mezzoudj, Saliha Khelifa, Meriem Saadna, Yasmina Department of Computer Science University of Algiers Algiers Algeria Artificial Intelligence of Information Technologies Department of Computer Science and Information Technologies University of Kasdi Merbah Ouargla Algeria Labstic laboratory Batna 2 University Batna Algeria

The COVID-19 epidemic has been a critical global challenge due to its high mortality rate and rapid spread. Initial diagnostic methods, such as chest X-rays and reverse transcriptase polymerase chain reaction (RT-PCR), can be time-consuming and require enhanced efficiency, especially in scenarios where large-scale testing is necessary. Combining deep learning (DL) and big data analytics tools is crucial for developing accurate and fast systems to detect COVID-19 infections and prevent further transmission. In this study, we introduce a distributed Deep Convolutional Neural Network (DCNN) framework designed for the detection of COVID-19, utilizing a comprehensive dataset of chest X-ray images. Our approach leverages the spark-tensorflow-distributor, which integrates TensorFlow 2.x with Apache Spark 3.x, enabling distributed training within the Spark framework. The system utilizes Spark’s barrier mode to execute distributed training tasks, significantly enhancing the speed of both training and testing phases. We classify chest X-ray images into two categories: COVID-19 and non-COVID-19. The experimental setup involves processing the large-scale dataset of chest X-ray images in a parallelized manner using the Spark framework. Our results demonstrate that the proposed DCNN model achieves a classification accuracy of 95.53%, with a testing time of 0.06 seconds and a training time of 18,909 seconds. Furthermore, when compared to other state-of-the-art methods for COVID-19 classification, our approach proves to be more efficient and effective. This study highlights the potential of combining distributed computing frameworks with deep learning techniques to address largescale medical image analysis challenges, particularly in the context of COVID-19 detection. © 2025 Slovene Society Informatika. All rights reserved.

关键词： COVID-19

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Innovation in Sea-Sky Line Detection: Fusion of ConvNeXt Classification, HED, and Canny Edge Detection 24

Innovation in Sea-Sky Line Detection: Fusion of ConvNeXt Cla...

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2024 International Conference on Intelligent Perception and Pattern Recognition, IPPR 2024

作者： Chen, Qiaochuan Wang, Zimo Zhang, Dan Zhang, Xiangyu School of Computer Engineering and Science Shanghai Uinversity China Institute of Artificial Intelligence Collaborative Innovation Center for the Marine Artificial Intelligence Shanghai Uinversity China Shanghai Artificial Intelligence Laboratory China

ISBN: (纸本)9798400707315

In the maritime context, the delineation of the sea-sky line, serving as a critical demarcation between the maritime and non-maritime domains, assumes paramount significance for target detection and the preservation of situational awareness. Despite this, the identification of the sea-sky line poses significant difficulties, mainly due to obstacles present in complex marine settings and the fluctuations in lighting conditions. Recognizing the pivotal role of sea-sky line detection in the realm of maritime surveillance, this paper introduces a methodological approach aimed at mitigating these challenges. The proposed methodology strategically amalgamates edge detection and deep learning classification tasks, leveraging both HED and Canny edge detection methodologies to ascertain image edges. This synergistic application not only mitigates the risk of edge loss pertaining to the sea-sky line but also diminishes the computational complexity in subsequent stages. Subsequent to edge detection, an enhanced ConvNeXt classification network is employed to discern the classification of individual edge pixel points with respect to their association with the sea-sky line. The model demonstrates noteworthy proficiency in the classification of sea-sky line edge pixels. In the final phase, the rectified sea-sky line edge pixels are fitted to the sea-sky lines utilizing the RANSAC algorithm. The efficacy of the proposed methodology is rigorously validated using the extensive Singapore Maritime Dataset. Our proposed approach has demonstrated superior accuracy through a comparative analysis with existing algorithms, highlighting its effectiveness in tackling the inherent challenges of sea-sky line detection in the maritime domain. © 2024 Copyright held by the owner/author(s).

关键词： Pixels

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Sparse representation scheme with enhanced medium pixel intensity for face recognition

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CAAI Transactions on intelligence Technology 2024年第1期9卷 116-127页

作者： Xuexue Zhang Yongjun Zhang Zewei Wang Wei Long Weihao Gao Bob Zhang State Key Laboratory of Public Big Data Institute for Artificial IntelligenceCollege of Computer Science and TechnologyGuizhou UniversityGuiyangGuizhouChina Department of Computer and Information Science University of MacaoAvenida da UniversidadeTaipaMacaoChina

Sparse representation is an effective data classification algorithm that depends on the known training samples to categorise the test *** has been widely used in various image classification *** in sparse representation means that only a few of instances selected from all training samples can effectively convey the essential class-specific information of the test sample,which is very important for *** deformable images such as human faces,pixels at the same location of different images of the same subject usually have different ***,extracting features and correctly classifying such deformable objects is very ***,the lighting,attitude and occlusion cause more *** the problems and challenges listed above,a novel image representation and classification algorithm is ***,the authors’algorithm generates virtual samples by a non-linear variation *** method can effectively extract the low-frequency information of space-domain features of the original image,which is very useful for representing deformable *** combination of the original and virtual samples is more beneficial to improve the clas-sification performance and robustness of the ***,the authors’algorithm calculates the expression coefficients of the original and virtual samples separately using the sparse representation principle and obtains the final score by a designed efficient score fusion *** weighting coefficients in the score fusion scheme are set entirely ***,the algorithm classifies the samples based on the final *** experimental results show that our method performs better classification than conventional sparse representation algorithms.

关键词： computer vision face recognition image classification image representation

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