To deal with the data mining problem of asymmetry misclassification cost, an innovative churn prediction method is proposed based on existing churn prediction research. This method adjusts the misclassification cost b...To deal with the data mining problem of asymmetry misclassification cost, an innovative churn prediction method is proposed based on existing churn prediction research. This method adjusts the misclassification cost based on the C4. 5 decision tree as a baseline classifier, which can obtain the prediction model with a minimum error rate based on the assumption that all misclassifications have the same cost, to realize cost-sensitive learning. Results from customer data of a certain Chinese telecommunication company and the fact that the churners and the non-churners have different misclassification costs demonstrate that by altering the sampling ratio of churners and non-churners, this cost-sensitive learning method can considerably reduce the total misclassification cost produced by traditional classification methods. This method can also play an important role in promoting core competence of Chinese telecommunication industry.展开更多
Customer churn poses a significant challenge for the banking and finance industry in the United States, directly affecting profitability and market share. This study conducts a comprehensive comparative analysis of ma...Customer churn poses a significant challenge for the banking and finance industry in the United States, directly affecting profitability and market share. This study conducts a comprehensive comparative analysis of machine learning models for customer churn prediction, focusing on the U.S. context. The research evaluates the performance of logistic regression, random forest, and neural networks using industry-specific datasets, considering the economic impact and practical implications of the findings. The exploratory data analysis reveals unique patterns and trends in the U.S. banking and finance industry, such as the age distribution of customers and the prevalence of dormant accounts. The study incorporates macroeconomic factors to capture the potential influence of external conditions on customer churn behavior. The findings highlight the importance of leveraging advanced machine learning techniques and comprehensive customer data to develop effective churn prevention strategies in the U.S. context. By accurately predicting customer churn, financial institutions can proactively identify at-risk customers, implement targeted retention strategies, and optimize resource allocation. The study discusses the limitations and potential future improvements, serving as a roadmap for researchers and practitioners to further advance the field of customer churn prediction in the evolving landscape of the U.S. banking and finance industry.展开更多
China is the earliest country to eat Dictyophora and to realize its artificial domestication.At present,12 species of Dictyophora have been reported worldwide,7 species of which are found in China.D.rubrovolvata,D.ech...China is the earliest country to eat Dictyophora and to realize its artificial domestication.At present,12 species of Dictyophora have been reported worldwide,7 species of which are found in China.D.rubrovolvata,D.echinovolvata and D.indusiata have been cultivated on a large scale,and the main producing areas are Zhijin in Guizhou Province,Shunchang and Jiangle in Fujian Province,and Qingchuan and Changning in Sichuan Province.The cultivation of D.rubrovolvata had experienced 4 stages:wild tending,casserole cultivation,outdoor simple greenhouse cultivation and rapid development of new cultivation techniques.The present integrated cultivation technique of bag removing and soil covering of D.rubrovolvata were introduced in detail from the aspects of production and selection of high-quality fungi bags,bag removing and soil covering,spawn running,as well as fruiting management and harvesting.As one of the"ten main promoting technologies"of Guizhou Province in 2022,it had realized rapid propagation of liquid strains and supporting cultivation of improved varieties and methods.The suitable strains were selected to support understory cultivation,layer cultivation,basket cultivation,factory cultivation and other modes,which had short cultivation period and can realize annual production and supply.With the development of the industry,it is expected that low-cost secondary fermentation or tertiary fermentation cultivation technology will be more widely used.展开更多
Development status of agricultural industry in Xiqing District of Tianjin City in China is introduced.The intensive level of agriculture is relatively high in this region;the new-type agriculture develops rapidly;and ...Development status of agricultural industry in Xiqing District of Tianjin City in China is introduced.The intensive level of agriculture is relatively high in this region;the new-type agriculture develops rapidly;and the sales income of agricultural byproducts is the main source of household income.Based on the principles of market potential,production resources intensity,and associated promotion,a total of 3 indices for measuring the comparative advantage are selected,which are comparative advantage index,scale advantage index,and comprehensive advantage index.Based on the data analysis,competitive industries in this region are determined.Result shows that economic crops and aquaculture industry have relatively great location quotient,but aquaculture is not suitable for Xiqing District,due to its natural condition,industrial tradition and bases,and output value.Therefore,economic crop is selected as the leading industry in Xiqing District.展开更多
The progression through which a person acquires ,;kills, understanding, and opinions regarding a particular organization or company is called organizational learning （OL）. In this study, the connection between organ...The progression through which a person acquires ,;kills, understanding, and opinions regarding a particular organization or company is called organizational learning （OL）. In this study, the connection between organizational innovation （OI） and OL within the inf3rmation and communication technology （ICT） industry in Malaysia is surveyed. These relationships are examined, because various previous inquiries have shown that an imperative precursor to firm performance is OL. Two hundred and seventy-eight surveys were completed by small and medium organizations across Malaysia. The connections existing between the causes of OL and the causes of OI were ascertained by using structural equation modeling （SEM）. Amongst the Malaysian small- and medium-sized enterprises （SMEs） that participated in fire study, OI and OL are considerably linked.展开更多
文摘To deal with the data mining problem of asymmetry misclassification cost, an innovative churn prediction method is proposed based on existing churn prediction research. This method adjusts the misclassification cost based on the C4. 5 decision tree as a baseline classifier, which can obtain the prediction model with a minimum error rate based on the assumption that all misclassifications have the same cost, to realize cost-sensitive learning. Results from customer data of a certain Chinese telecommunication company and the fact that the churners and the non-churners have different misclassification costs demonstrate that by altering the sampling ratio of churners and non-churners, this cost-sensitive learning method can considerably reduce the total misclassification cost produced by traditional classification methods. This method can also play an important role in promoting core competence of Chinese telecommunication industry.
文摘Customer churn poses a significant challenge for the banking and finance industry in the United States, directly affecting profitability and market share. This study conducts a comprehensive comparative analysis of machine learning models for customer churn prediction, focusing on the U.S. context. The research evaluates the performance of logistic regression, random forest, and neural networks using industry-specific datasets, considering the economic impact and practical implications of the findings. The exploratory data analysis reveals unique patterns and trends in the U.S. banking and finance industry, such as the age distribution of customers and the prevalence of dormant accounts. The study incorporates macroeconomic factors to capture the potential influence of external conditions on customer churn behavior. The findings highlight the importance of leveraging advanced machine learning techniques and comprehensive customer data to develop effective churn prevention strategies in the U.S. context. By accurately predicting customer churn, financial institutions can proactively identify at-risk customers, implement targeted retention strategies, and optimize resource allocation. The study discusses the limitations and potential future improvements, serving as a roadmap for researchers and practitioners to further advance the field of customer churn prediction in the evolving landscape of the U.S. banking and finance industry.
基金Supported by Guizhou Provincial Key Laboratory of Edible Fungus Breeding in 2019(QKHPTRC[2019]5105).
文摘China is the earliest country to eat Dictyophora and to realize its artificial domestication.At present,12 species of Dictyophora have been reported worldwide,7 species of which are found in China.D.rubrovolvata,D.echinovolvata and D.indusiata have been cultivated on a large scale,and the main producing areas are Zhijin in Guizhou Province,Shunchang and Jiangle in Fujian Province,and Qingchuan and Changning in Sichuan Province.The cultivation of D.rubrovolvata had experienced 4 stages:wild tending,casserole cultivation,outdoor simple greenhouse cultivation and rapid development of new cultivation techniques.The present integrated cultivation technique of bag removing and soil covering of D.rubrovolvata were introduced in detail from the aspects of production and selection of high-quality fungi bags,bag removing and soil covering,spawn running,as well as fruiting management and harvesting.As one of the"ten main promoting technologies"of Guizhou Province in 2022,it had realized rapid propagation of liquid strains and supporting cultivation of improved varieties and methods.The suitable strains were selected to support understory cultivation,layer cultivation,basket cultivation,factory cultivation and other modes,which had short cultivation period and can realize annual production and supply.With the development of the industry,it is expected that low-cost secondary fermentation or tertiary fermentation cultivation technology will be more widely used.
基金Supported by the Philosophy Fund of Tianjin City
文摘Development status of agricultural industry in Xiqing District of Tianjin City in China is introduced.The intensive level of agriculture is relatively high in this region;the new-type agriculture develops rapidly;and the sales income of agricultural byproducts is the main source of household income.Based on the principles of market potential,production resources intensity,and associated promotion,a total of 3 indices for measuring the comparative advantage are selected,which are comparative advantage index,scale advantage index,and comprehensive advantage index.Based on the data analysis,competitive industries in this region are determined.Result shows that economic crops and aquaculture industry have relatively great location quotient,but aquaculture is not suitable for Xiqing District,due to its natural condition,industrial tradition and bases,and output value.Therefore,economic crop is selected as the leading industry in Xiqing District.
文摘The progression through which a person acquires ,;kills, understanding, and opinions regarding a particular organization or company is called organizational learning （OL）. In this study, the connection between organizational innovation （OI） and OL within the inf3rmation and communication technology （ICT） industry in Malaysia is surveyed. These relationships are examined, because various previous inquiries have shown that an imperative precursor to firm performance is OL. Two hundred and seventy-eight surveys were completed by small and medium organizations across Malaysia. The connections existing between the causes of OL and the causes of OI were ascertained by using structural equation modeling （SEM）. Amongst the Malaysian small- and medium-sized enterprises （SMEs） that participated in fire study, OI and OL are considerably linked.
