We proposed a practical approach with position-based dynamics (PBD) to simulate the volume of a deformable body. A variety of materials were simulated using the general constraints of PBD such as stretch, bending, and...
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Online Health Community (OHC) is a platform that provides medical consultation and health knowledge-sharing services. For patients, OHC can recommend high-quality doctors according to their recommendation popularity (...
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In response to the challenges brought by the significant increase in data volume and the proprietary, this study proposes a technology for automatically quantifying attributes importance and mining association rules b...
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Generative AI has been considered to fit Science and Technology especially in Graph Theory and software Testing and as such the subject has attracted some attention. based on the literature, this paper reviews previou...
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Recognizing abnormal fluid influx is the first and most important step for well control safety. However, due to the complexity of the wellbore fluid mechanism, uncertainty of the formation pressure and noises in the r...
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ISBN:
(纸本)9781613999936
Recognizing abnormal fluid influx is the first and most important step for well control safety. However, due to the complexity of the wellbore fluid mechanism, uncertainty of the formation pressure and noises in the real-time measurement data, it is difficult to detect kicks by conventional approaches. The purpose of this paper is to propose a knowledge-data hybrid approach and build a reliable and easy-to-use tool to automatically detect kicks. based on the knowledge of the kick main indicators, this work utilizes Long-Short moving window average algorithm combining advanced filtration technology to capture subtle change trends precisely and timely in noisy real-time measured surface data during drilling. Self-adaptive kick threshold value adopting approaches are proposed to improve the accuracy of kick detection for different data measuring technologies. The knowledge and inference logic of specific drilling operations and phenomena, such as wellbore ballooning effects and drilling fluid poring, are embedded in the data analysis technologies to reduce the false alarms of the kick detection system. A reliable and practical intelligent kick detection tool is built based on this knowledge-data-dual-driven method. The must-have input set of this tool only contains 8 channels, including pit volumes, outlet flowrate, stand pipe pressure, and etc, which makes the tool flexible and widely applicable. The tool consumes both real-time and archived drilling data, and provide audible and easy-to-understand visual alarms when kick is detected. Moreover, the tool supports different outlet flowrate measurement technologies, including Paddle meter, Radar meter and Coriolis meter. Extensive testing process using historical data manifests that the kick detection rate is 100% (correctly detected 16 kicks out of total 16 kicks), and the overall detection time is 6.1 mins earlier comparing to that of conventional methods. The tool was also deployed in a real-time operation center for
The complexity and diversity of multi-modal knowledge graphs arise from their ability to fuse information from multiple sources. Traditional knowledge graph representation learning faces challenges in effectively capt...
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Many sectors are challenged by how to effectively represent knowledge in files that contain multiple images closely related to text, and how to make models understand the relationship between images and text. Contrast...
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Given the significant practical implications of energy consumption prediction for the design and energy conservation control of refrigeration systems, numerous methods have been proposed in this field. However, existi...
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ISBN:
(数字)9789819754892
ISBN:
(纸本)9789819754885;9789819754892
Given the significant practical implications of energy consumption prediction for the design and energy conservation control of refrigeration systems, numerous methods have been proposed in this field. However, existing approaches face two primary challenges. Firstly, refrigeration system energy consumption is heavily influenced by external factors, making it difficult for current methods or models to capture the randomness of energy consumption data. Secondly, prediction models struggle to control error accumulation during inference, leading to difficulties in forecasting energy consumption data over extended time ranges. To address these issues, this paper proposes an energy consumption prediction model based on adversarial networks and Transformer networks-ANFormer. The ANFormer model, leveraging self-attention mechanisms and feedforward neural networks, encodes and models input sequences to forecast future energy consumption of refrigeration systems. Ultimately, validation experiments conducted on datasets from two real refrigeration systems demonstrate the accuracy and efficiency of *** experimental results show that the ANFormer model proposed in this paper has optimized the values of MSE and RMSE by approximately 3%-15% compared to FreTS, DLinear, and NLinear models. Compared to Linear, Transformer, AutoFormer, and Informer models, the results in terms of MSE, RMSE, and MAE have all been optimized by more than 79%.
Machine learning techniques, particularly fuzzy Support Vector Machines (fuzzy SVM), have demonstrated effectiveness in sentiment classification within social networks. However, the evolving complexity of social netwo...
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A form of artificial intelligence (AI) that is advanced and involves rules that are applied to data to simulate a person's thought process in a particular area, knowledgeengineering can be described as an advance...
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