本体能够形式化地描述特定领域的概念、术语及关系,但不能表达模糊的信息.为此将模糊描述逻辑应用在本体构建中,提出一个5元组的模糊本体模型,由概念集、角色集、实例集、模糊断言集和模糊关系集构成.基于Tableaux算法思想并结合算例,...本体能够形式化地描述特定领域的概念、术语及关系,但不能表达模糊的信息.为此将模糊描述逻辑应用在本体构建中,提出一个5元组的模糊本体模型,由概念集、角色集、实例集、模糊断言集和模糊关系集构成.基于Tableaux算法思想并结合算例,给出模糊本体模型推理问题的求解方法.针对模糊本体模型的隶属度计算问题,结合Google搜索,利用标准化谷歌距离(normalized Google distance,NGD)演算法,以实时且完全在线处理的方式计算关键词的相关性,并最终转化为模糊本体中的隶属度.展开更多
Knowledge graph(KG)conflict resolution is to solve knowledge conflicts problem in the construction of KG.Aiming at the problem of KG conflict resolution,a KG conflict resolution algorithm NGDcrm is proposed,which is a...Knowledge graph(KG)conflict resolution is to solve knowledge conflicts problem in the construction of KG.Aiming at the problem of KG conflict resolution,a KG conflict resolution algorithm NGDcrm is proposed,which is a numeric graph dependency-based conflict resolution method.NGDcrm utilizes the dependency graph to perform arithmetic calculation and predicate comparison of numerical entity knowledge in the KG.NGDcrm first uses a parallel segmentation method to segment the KG;then,it extracts the features of the KG according to KG embedding;finally,it uses numerical graph dependencies to detect and correct the wrong facts in the KG based on the extracted features.The experimental results on real data show that NGDcrm is better than the state-of-the-art knowledge conflict resolution method.Among them,the AUC value of NGDcrm on the DBpedia dataset is 15.4%higher than the state-of-the-art method.展开更多
Pulse pile-up is a problem in nuclear spectroscopy and nuclear reaction studies that occurs when two pulses overlap and distort each other,degrading the quality of energy and timing information.Different methods have ...Pulse pile-up is a problem in nuclear spectroscopy and nuclear reaction studies that occurs when two pulses overlap and distort each other,degrading the quality of energy and timing information.Different methods have been used for pile-up rejection,both digital and analogue,but some pile-up events may contain pulses of interest and need to be reconstructed.The paper proposes a new method for reconstructing pile-up events acquired with a neutron detector array(NEDA)using an one-dimensional convolutional autoencoder(1D-CAE).The datasets for training and testing the 1D-CAE are created from data acquired from the NEDA.The new pile-up signal reconstruction method is evaluated from the point of view of how similar the reconstructed signals are to the original ones.Furthermore,it is analysed considering the result of the neutron-gamma discrimination based on charge comparison,comparing the result obtained from original and reconstructed signals.展开更多
热储温度评价是地热系统研究的关键内容。文章选取建设比较成熟的美国国家地热数据系统(National Geothermal Data System,NGDS),分别利用地球化学地热温度计、多矿物平衡法、冷热水混合模型及气体地热温度计对不同地热田的热储温度进...热储温度评价是地热系统研究的关键内容。文章选取建设比较成熟的美国国家地热数据系统(National Geothermal Data System,NGDS),分别利用地球化学地热温度计、多矿物平衡法、冷热水混合模型及气体地热温度计对不同地热田的热储温度进行评价,确定不同热储温度评价方法的适用性和局限性,以期为热储温度评价方法的选取提供参考。研究结果表明,当地热水体达到离子和矿物的平衡状态时,地球化学地热温度计可得到相对合理的热储温度;当地热水体未达到离子和矿物的平衡状态时,SiO2地热温度计较阳离子温度对热储温度的评价效果更准确。尽管基于饱和指数的多矿物平衡法由于有限饱和平衡矿物选择导致不一定得到精确的热储温度,但可为地球化学地热温度计的选取提供依据,比如当石英过饱和时,用玉髓地热温度计计算的温度比石英更能反映地下的热储温度。对于蒸汽为主的高温地热储层,由于蒸汽和地表岩石反应导致矿物和离子无法反映热储信息,气体地热温度计对该类型热储温度的评价更加合理。由于混合模型得到的是冷、热水混合之前的热水端温度,因此,混合模型计算的热储温度通常高于地球化学地热温度计。总之,没有一种温度计是万能的,不同地热温度计适用条件不同,综合不同合理的方法以及互相校正是最好的方法。展开更多
文摘本体能够形式化地描述特定领域的概念、术语及关系,但不能表达模糊的信息.为此将模糊描述逻辑应用在本体构建中,提出一个5元组的模糊本体模型,由概念集、角色集、实例集、模糊断言集和模糊关系集构成.基于Tableaux算法思想并结合算例,给出模糊本体模型推理问题的求解方法.针对模糊本体模型的隶属度计算问题,结合Google搜索,利用标准化谷歌距离(normalized Google distance,NGD)演算法,以实时且完全在线处理的方式计算关键词的相关性,并最终转化为模糊本体中的隶属度.
基金Supported by the Henan Province Science and Technology Department Foundation(No.202102310237,192102210133,202102310295)the Doctoral Research Fund of Zhengzhou University of Light Industry(No.2018BSJJ039)the Internet Medical and Health Service Henan Collaborative Innovation Center Open Project Fund(No.IH2019006).
文摘Knowledge graph(KG)conflict resolution is to solve knowledge conflicts problem in the construction of KG.Aiming at the problem of KG conflict resolution,a KG conflict resolution algorithm NGDcrm is proposed,which is a numeric graph dependency-based conflict resolution method.NGDcrm utilizes the dependency graph to perform arithmetic calculation and predicate comparison of numerical entity knowledge in the KG.NGDcrm first uses a parallel segmentation method to segment the KG;then,it extracts the features of the KG according to KG embedding;finally,it uses numerical graph dependencies to detect and correct the wrong facts in the KG based on the extracted features.The experimental results on real data show that NGDcrm is better than the state-of-the-art knowledge conflict resolution method.Among them,the AUC value of NGDcrm on the DBpedia dataset is 15.4%higher than the state-of-the-art method.
基金partially supported by MICIU MCIN/AEI/10.13039/501100011033Spain with grant PID2020-118265GB-C42,-C44,PRTR-C17.I01+1 种基金Generalitat Valenciana,Spain with grant CIPROM/2022/54,ASFAE/2022/031,CIAPOS/2021/114the EU NextGenerationEU,ESF funds,and the National Science Centre (NCN),Poland (grant No.2020/39/D/ST2/00466)
文摘Pulse pile-up is a problem in nuclear spectroscopy and nuclear reaction studies that occurs when two pulses overlap and distort each other,degrading the quality of energy and timing information.Different methods have been used for pile-up rejection,both digital and analogue,but some pile-up events may contain pulses of interest and need to be reconstructed.The paper proposes a new method for reconstructing pile-up events acquired with a neutron detector array(NEDA)using an one-dimensional convolutional autoencoder(1D-CAE).The datasets for training and testing the 1D-CAE are created from data acquired from the NEDA.The new pile-up signal reconstruction method is evaluated from the point of view of how similar the reconstructed signals are to the original ones.Furthermore,it is analysed considering the result of the neutron-gamma discrimination based on charge comparison,comparing the result obtained from original and reconstructed signals.
文摘热储温度评价是地热系统研究的关键内容。文章选取建设比较成熟的美国国家地热数据系统(National Geothermal Data System,NGDS),分别利用地球化学地热温度计、多矿物平衡法、冷热水混合模型及气体地热温度计对不同地热田的热储温度进行评价,确定不同热储温度评价方法的适用性和局限性,以期为热储温度评价方法的选取提供参考。研究结果表明,当地热水体达到离子和矿物的平衡状态时,地球化学地热温度计可得到相对合理的热储温度;当地热水体未达到离子和矿物的平衡状态时,SiO2地热温度计较阳离子温度对热储温度的评价效果更准确。尽管基于饱和指数的多矿物平衡法由于有限饱和平衡矿物选择导致不一定得到精确的热储温度,但可为地球化学地热温度计的选取提供依据,比如当石英过饱和时,用玉髓地热温度计计算的温度比石英更能反映地下的热储温度。对于蒸汽为主的高温地热储层,由于蒸汽和地表岩石反应导致矿物和离子无法反映热储信息,气体地热温度计对该类型热储温度的评价更加合理。由于混合模型得到的是冷、热水混合之前的热水端温度,因此,混合模型计算的热储温度通常高于地球化学地热温度计。总之,没有一种温度计是万能的,不同地热温度计适用条件不同,综合不同合理的方法以及互相校正是最好的方法。
