Utilitas Algorithmica (UA)

ISSN: xxxx-xxxx (print)

Utilitas Algorithmica (UA) is a premier, open-access international journal dedicated to advancing algorithmic research and its applications. Launched to drive innovation in computer science, UA publishes high-impact theoretical and experimental papers addressing real-world computational challenges. The journal underscores the vital role of efficient algorithm design in navigating the growing complexity of modern applications. Spanning domains such as parallel computing, computational geometry, artificial intelligence, and data structures, UA is a leading venue for groundbreaking algorithmic studies.

Li Xu 1, Xiuli Wang 1, Ke Wang 2
1Medical College, Shandong Yingcai University, Jinan, Shandong, 250104, China
2Shandong Weiping Information Security Assessment Technology Co., Ltd., Jinan, Shandong, 250101, China
Abstract:

The human specimen, due to its non-renewable nature, requires the liquid exchange process in adaptive regulation mode to realize precise control. In this paper, a stochastic parallel perturbation based gradient descent algorithm (SPGD) is introduced into the real-time control system for human specimen liquid exchange. The SPGD algorithm is used to assist the real-time control system to monitor the liquid concentration and regulate the liquid exchange power in real time, so as to keep the liquid exchange speed fast and stable and reduce the risk of specimen damage. The advantages of SPGD algorithm and real-time control system in the process of human specimen liquid exchange are verified through several experiments. The results show that there is a correlation between different liquid concentrations, real-time power and liquid exchange speed, and the combination of SPGD algorithm and real-time monitoring of the changes between the three can improve the stability of liquid exchange. The SPGD algorithm with the introduction of stochastic parallel perturbations reaches an evaluation function value of 0.83 at 31 iterations and a convergence accuracy of 0.9698 after 150 iterations. The convergence speed and accuracy are better than the unimproved SPGD algorithm. During the real-time control process, the relative error of pipetting is not more than 1.5%, and the repeatability deviation is less than 1%. Within the time range of 0-120ms, the real-time control system introducing SPGD algorithm can give the changing power of liquid exchange, which guarantees the specimen safety in the process of liquid exchange.

Shichen Yu 1, Man Liu 1
1Business School, City University of Zhengzhou, Zhengzhou, Henan, 450000, China
Abstract:

In this study, a data-driven assessment framework integrating multi-criteria decision making, association rule mining and fuzzy clustering methods is proposed to address the scientific and objective needs of rule extraction and optimization in employee performance assessment. The TOPSIS model is improved by triangular fuzzy numbers to realize the objective ranking of business performance. The Apriori algorithm is improved to mine the association rules between competency and performance. The empirical results show that Employee 3 is ranked in the excellent grade with 101.32% task completion rate and 0.8323 relative proximity. The questionnaire results of competency quality had a significant impact on appraisal with a confidence level of 84.3%, while technical title and education were not sufficiently correlated with a confidence level of <30%. The fuzzy decision tree model generated 25 classification rules with a confidence level higher than 63.2%. And combined with the work attitude index with a weight of 0.2913 to complete the comprehensive performance assessment, the results show that the overall performance score of the employees in this enterprise is 0.81362, which is a good grade. This study makes the performance appraisal more objective, precise and efficient, and at the same time expands the application scope of data mining technology in enterprise management.

Man Liu 1, Shichen Yu 1
1Business School, City University of Zhengzhou, Zhengzhou, Henan, 450000, China
Abstract:

In this paper, we construct a multi-level network based on corporate mobility relationships to quantify human resource attributes. The cuckoo search algorithm (CS) is chosen to enhance the global optimization capability of human resource management scheme. Combine CS and XGBoost to construct CS-XGBoost algorithm, and realize the optimal solution of HRM scheme through hyperparameter optimization and other steps. The multi-project human resource management of construction enterprises is taken as an example to verify the auxiliary value of CS-XGBoost algorithm in the generation of optimal management scheduling scheme. Empirical studies show that the algorithm can obtain the optimal solution in about 450 iterations. In multi-project scheduling management, the optimal duration can be reduced to 510 days, which is better than the comparison algorithm. With the introduction of demand prioritization requirements, the algorithm can effectively balance the differences in project duration, project cost and employee working time. The CS-XGBoost algorithm can be used to quickly realize the optimal decision-making of enterprise human resource scheduling management, save costs and improve efficiency.

Lin Lin 1
1Department of Public Education, Changchun Technical University of Automobile, Changchun, Jilin, 130013, China
Abstract:

In the era of artificial intelligence, online learning of English courses in colleges and universities has gradually become one of the mainstream learning modes. Based on the traditional teaching methods, this paper carries out the research on the optimization of English teaching path in colleges and universities. A micro-learning unit clustering model is constructed with four modules: data preprocessing, learning pattern mining, learning path diagram construction and micro-learning unit clustering. The model analyzes the learning state of learners through sequence pattern mining technology, and conducts orderly planning of learning resources based on learners’ characteristics. On this basis, this paper defines the online learning path planning problem and online learning path planning according to the continuity characteristics of learning knowledge points, and constructs the online learning path planning model. At the same time, the dynamic planning algorithm is selected to carry out the optimization of path planning. Based on the learning status of different learners, the optimal online learning path is planned to realize the optimization of English teaching path. Compared with similar classical algorithms, the online learning path planning model has the highest matching degree of 0.8 between the planned paths and the learning states of users under different learning resources conditions, which verifies the superiority of this paper’s model in the optimization of English teaching paths in colleges and universities.

Yang Li 1
1School of Teacher Education, Pingdingshan University, Pingdingshan, Henan, 467000, China
Abstract:

The evaluation of labor education under the modernization of education should establish a long-term evaluation mechanism of labor education to achieve the goal of educating people by labor to build morality, labor to enhance intelligence, labor to strengthen the body, labor to cultivate beauty, and labor to innovate. In this paper, we use fuzzy clustering algorithm to construct labor education evaluation mechanism based on teacher evaluation standard. The results of this model for labor education evaluation are basically the same as those of manual evaluation, and can be used for the evaluation of the quality status of labor education. Based on this, the study plans in detail the preimplementation preparation, specific implementation steps and continuous optimization process of the evaluation mechanism. It also analyzes the implementation path of the labor education evaluation mechanism based on the fuzzy clustering algorithm by taking the example of Z elementary school in city A. The overall evaluation score of the quality of labor education in Z elementary school is 4.013, and there are still many areas that need to be improved. The evaluation mechanism of labor education based on fuzzy clustering algorithm was run in this school for 8 weeks, and the educational effect was continuously optimized through the incentive mechanism. Finally, the second-level fuzzy judgment method is introduced to further optimize the mechanism. Based on the new evaluation mechanism of labor education, individual student development can be evaluated, curriculum quality can be assessed, and operable solutions can be provided for the improvement of the quality of school labor education.

Xuemin Han 1, Peng Guo 2, Ziqi Deng 1, Xu Han 3, Hong Wang 1
1Hainan University, Danzhou, Hainan, 573717, China
2 Cangzhou Transport University, Huanghua, Hebei, 061199, China
3School of International Education, Henan University, Zhengzhou, Henan, 450000, China
Abstract:

The aim of this paper is to construct a data model applicable to youth sports training in the IoT environment and develop efficient pattern recognition algorithms to achieve accurate analysis and assessment of youth sports training status. The features of youth sports training data collected by IoT technology are extracted through a combination of deep learning and feature decomposition. The feature vectors obtained from feature extraction are inputted into the Long Short-Term Memory (LSTM) network to generate the data model of youth sports training in this paper and predict the state of youth sports training. The prediction results are input as features into the Support Vector Machine (SVM) algorithm, and these features are extracted using the Empirical Modal Decomposition (EEMD) method, and at the same time, the hierarchical idea is utilized to realize the recognition of youth sports training patterns. The results of the study showed that the errors of the results of predicting youth sports training states using the LSTM model were mostly within 0 ± 0.5. The prediction accuracies of the model on the test set for the three athletic training state metrics were 96.80%, 99.40%, and 98.80%, respectively. Meanwhile, the performance of the SVM model for youth athletic training state pattern recognition using the SVM model was significantly superior, with 100% accuracy on the test set for four models, including pattern 2.

Liya Yin 1
1UTS Business School, University of Technology Sydney (UTS), Sydney, NSW, Australia
Abstract:

In this study, we first collected and preprocessed data from 500 basketball players between the ages of 13-35 years old in the same-court rivalry training in Northwest China, after which we utilized the Global Chaos Bat Algorithm (GCBA) for the mental training anxiety emotion feature extraction, and analyzed the correlation between each feature and the anxiety emotion through the Pearson coefficient. Finally, the LightGBM-based emotion prediction model was constructed, and the SHAP value was introduced to evaluate the feature importance of the model. The results show that the LightGBM model performs better and has higher prediction accuracy, which is as high as 96.68%; the interpretation results of the SHAP algorithm indicate that the gender and age of the basketball players are the main real-world factors for assessing their anxiety in same-court rivalry training. In addition, their game scores, opponents’ strengths and injury histories during the same-court rivalry training were the main intrinsic factors for their anxiety. In conclusion, the psychological state of basketball players can reflect the severity of their training anxiety, and it further reveals the relationship between the psychological characteristics of basketball players and their training anxiety.

Dongxia Wu 1
1School of Culture and Tourism, Huangshan Vocational and Technical College, Huangshan, Anhui, 245000, China
Abstract:

In this paper, leisure tourism is taken as the entry point of the research, and the fused location key point features are added and integrated with the multidimensional features of time, location and space to construct an accurate portrait of social media tourism users. On the basis of tourism user profiles, a two-step clustering algorithm is combined to carry out cross-cultural analysis of social media data, to explore and excavate the performance of users’ tourism preferences under the cross-cultural ability of social media. Meanwhile, in order to realize the prediction of leisure tourism preference, a combined model based on BP neural network and ARIMA is proposed to improve the accuracy of leisure tourism preference prediction by fully considering the linear and nonlinear laws of tourism statistics. The ARIMA-BP combination prediction model is applied to predict the leisure tourism preference in the future from 2027-2034. During the period 2027-2029, the number of leisure tourism tourists maintains a high annual growth rate of more than 15%, while the growth rate slows down after 2029, with an average annual growth rate of 4.44%. In 2033, the number of leisure tourism tourists will reach 1,691,280,000, and the leisure tourism preference of tourism users has been significantly strengthened.

Hailong Zhao 1, Ruien Zhang 2, Meiyi Huo 3, Peilin Chen 4, Lei Yang 4
1Chongqing University, Chongqing, 400000, China
2Jilin Institute of Chemical Technology, Jinlin, Jilin, 132000, China
3North China University of Water Resources and Electric Power, Zhengzhou, Henan, 450000, China
4Huazhong University of Science and Technology, Wuhan, Hubei, 430000, China
Abstract:

During the operation of transmission lines, there are sudden failures and a large number of slowdeveloping, preventable “gradual” failures, which have seriously threatened the safe and stable operation of the transmission system. Based on analyzing the multidimensional environmental factors affecting line safety, the study proposes a method for identifying the operating state of transmission lines based on the AdaBoost integrated learning algorithm, and develops a set of transmission line hidden danger monitoring system. A decision pile based on Ginin indicators is used as a weak classifier, and the hidden danger monitoring results and their confidence levels are output by training and weighted summation of multiple weak classifiers. Using historical data for validation experiments, the proposed method achieves an accuracy of 95.92% in recognizing the operating state of transmission lines, which is a more superior performance compared with traditional machine learning methods. The system can basically realize the hidden danger monitoring of transmission lines, so as to assist the field operation and maintenance personnel of transmission lines to carry out fault investigation, and reduce the transmission line tripping due to the development of hidden danger into fault.

Yongqian Wang 1
1School of Digital Business, Shaanxi Technical College of Finance and Economics, Xianyang, Shaanxi, 712000, China
Abstract:

School-enterprise integration is an effective way to improve the running level of higher vocational colleges and universities and stimulate the innovation vitality of enterprises. This paper takes the higher vocational hotel management profession as the research object, combines IPO model and intuitionistic fuzzy hierarchical analysis method (IFAHP) to realize the construction of schoolenterprise integration performance evaluation index system, and utilizes the fuzzy comprehensive evaluation method (FCE) to carry out specific application of this evaluation system. On this basis, the fuzzy set qualitative comparative analysis (fsQCA) was used to explore the specific path of schoolenterprise collaborative education in higher vocational colleges. The empirical study shows that the constructed evaluation system of school-enterprise integration has high reliability and operability, which is conducive to horizontal and vertical comparisons of higher vocational colleges and universities, and is also applicable to the authorities of higher vocational colleges and universities and the third-party evaluation organizations for the performance evaluation of school-enterprise integration. At the same time, it also indicates that the realization of high-performance schoolenterprise collaborative parenting programs in higher vocational hotel management majors cannot be achieved through a single variable, but rather through the form of conditional grouping to play a key role. There are five paths to improve the effectiveness of university-enterprise collaborative parenting in colleges and universities, and in the paths, the enterprise scale, the pre-project input and the project implementation process are the core conditions to improve the effectiveness of university-enterprise collaborative parenting in higher vocational colleges and universities, and the combination of changes of the three plays a decisive role in different condition grouping states.

Special Issues

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