As a novel paradigm,semantic communication provides an effective solution for breaking through the future development dilemma of classical communication systems.However,it remains an unsolved problem of how to measure...As a novel paradigm,semantic communication provides an effective solution for breaking through the future development dilemma of classical communication systems.However,it remains an unsolved problem of how to measure the information transmission capability for a given semantic communication method and subsequently compare it with the classical communication method.In this paper,we first present a review of the semantic communication system,including its system model and the two typical coding and transmission methods for its implementations.To address the unsolved issue of the information transmission capability measure for semantic communication methods,we propose a new universal performance measure called Information Conductivity.We provide the definition and the physical significance to state its effectiveness in representing the information transmission capabilities of the semantic communication systems and present elaborations including its measure methods,degrees of freedom,and progressive analysis.Experimental results in image transmission scenarios validate its practical applicability.展开更多
目的了解舟山市某医院男性精神分裂症患者再住院情况及影响因素,并构建列线图模型。方法采用回顾性研究方法,选取2022年1月至12月在舟山市第二人民医院接受住院治疗的183例男性精神分裂症患者为研究对象,根据患者住院次数分为再住院组(...目的了解舟山市某医院男性精神分裂症患者再住院情况及影响因素,并构建列线图模型。方法采用回顾性研究方法,选取2022年1月至12月在舟山市第二人民医院接受住院治疗的183例男性精神分裂症患者为研究对象,根据患者住院次数分为再住院组(住院次数≥2次)和未再住院组(住院次数为1次)。采用t检验或χ2检验对两组患者的资料进行单因素分析;采用多因素Logistic回归分析探讨精神分裂症患者1年内再住院的影响因素,并建立列线图预测模型。结果183例精神分裂症患者再住院率为49.18%;病程、首次住院时间、吸烟史及饮酒史是再住院的独立危险因素(P<0.05);列线图模型的受试者操作特征曲线下面积(area under the curve,AUC)为76.53。结论舟山市第二人民医院男性精神分裂症患者再住院率较高,病程、首次住院时间、吸烟及饮酒史是精神分裂症患者1年内再住院的独立风险因素,建立列线图预测模型有望评估精神分裂症患者再住院高危因素并实施针对性的干预措施以改善患者的生命质量。展开更多
基金supported by the National Natural Science Foundation of China(No.62293481,No.62071058)。
文摘As a novel paradigm,semantic communication provides an effective solution for breaking through the future development dilemma of classical communication systems.However,it remains an unsolved problem of how to measure the information transmission capability for a given semantic communication method and subsequently compare it with the classical communication method.In this paper,we first present a review of the semantic communication system,including its system model and the two typical coding and transmission methods for its implementations.To address the unsolved issue of the information transmission capability measure for semantic communication methods,we propose a new universal performance measure called Information Conductivity.We provide the definition and the physical significance to state its effectiveness in representing the information transmission capabilities of the semantic communication systems and present elaborations including its measure methods,degrees of freedom,and progressive analysis.Experimental results in image transmission scenarios validate its practical applicability.
文摘目的了解舟山市某医院男性精神分裂症患者再住院情况及影响因素,并构建列线图模型。方法采用回顾性研究方法,选取2022年1月至12月在舟山市第二人民医院接受住院治疗的183例男性精神分裂症患者为研究对象,根据患者住院次数分为再住院组(住院次数≥2次)和未再住院组(住院次数为1次)。采用t检验或χ2检验对两组患者的资料进行单因素分析;采用多因素Logistic回归分析探讨精神分裂症患者1年内再住院的影响因素,并建立列线图预测模型。结果183例精神分裂症患者再住院率为49.18%;病程、首次住院时间、吸烟史及饮酒史是再住院的独立危险因素(P<0.05);列线图模型的受试者操作特征曲线下面积(area under the curve,AUC)为76.53。结论舟山市第二人民医院男性精神分裂症患者再住院率较高,病程、首次住院时间、吸烟及饮酒史是精神分裂症患者1年内再住院的独立风险因素,建立列线图预测模型有望评估精神分裂症患者再住院高危因素并实施针对性的干预措施以改善患者的生命质量。
