Any linear transform matrix can be used to easily calculate a consistent form, and a plurality of conversion can be easily connected together by matrix multiplication. When performing file transfers, you can encrypt f...Any linear transform matrix can be used to easily calculate a consistent form, and a plurality of conversion can be easily connected together by matrix multiplication. When performing file transfers, you can encrypt files matrix transformation. Article presents a matrix-based electronic document encryption and decryption algorithm, which relies on a special class of matrices combinatorial problems, the method to improve the security of electronic document system is feasible and effective, and finally give the source code and programming software.展开更多
The present paper analyzes the strategic choices for learning Chinese by 300 Hungarian university students. The survey summarizes the most often used Chinese language learning strategies and verbal language learning s...The present paper analyzes the strategic choices for learning Chinese by 300 Hungarian university students. The survey summarizes the most often used Chinese language learning strategies and verbal language learning strategies of Hungarian language learners one by one. With the help of the method of multidimensional scaling, the survey got to the result that the preference of the general language learning strategies is characterized by a strong opposition. In the case of the choice and use of three strategies--the social, the meta-cognitive and the cognitive strategies, language learners prefer a combined choice or non-choice. While in the use of the emotional, compensation and memorization strategies, a strong opposition emerges. Those using memorization strategies less prefer the emotional and the compensation strategies. This is true vice versa as well, those using emotional strategies, use memorization and compensation strategies less often. While the relation of the general language learning strategies was characterized by a certain opposition, in the use of the verbal strategies a strict continuity could be detected. Hungarian language learners consider the use of almost all verbal strategies with few exceptions to be successful in their communication. The results of the Variables path analysis with Partial Least-Squares Estimation （LVPLS） model revealed all those connections that structurally exist among the three exogen background latent variables （language level, language learner style and the ascriptive background） and the two endogen latent variables （the language learning strategies and the verbal strategies）. All of these latent variables measured with several manifest variables of the second exogen background variables, the language learning style showed the biggest affect to strategy use, this variable influences the successfulness of the learning of Chinese most strongly.展开更多
Online encyclopedias such as Wikipedia provide a large and growing number of articles on many topics.However,the content of many articles is still far from complete.In this paper,we propose Ency Catalog Rec,a system t...Online encyclopedias such as Wikipedia provide a large and growing number of articles on many topics.However,the content of many articles is still far from complete.In this paper,we propose Ency Catalog Rec,a system to help generate a more comprehensive article by recommending catalogs.First,we represent articles and catalog items as embedding vectors,and obtain similar articles via the locality sensitive hashing technology,where the items of these articles are considered as the candidate items.Then a relation graph is built from the articles and the candidate items.This is further transformed into a product graph.So,the recommendation problem is changed to a transductive learning problem in the product graph.Finally,the recommended items are sorted by the learning-to-rank technology.Experimental results demonstrate that our approach achieves state-of-the-art performance on catalog recommendation in both warm-and cold-start scenarios.We have validated our approach by a case study.展开更多
Uncertainty analysis and risk analysis are two important areas of modern water resource management,in which accurate variance estimation is required.The traditional runoff model is established under the assumption tha...Uncertainty analysis and risk analysis are two important areas of modern water resource management,in which accurate variance estimation is required.The traditional runoff model is established under the assumption that the variance is a constant or it changes with the seasons.However,hydrological processes in the real world are often heteroscedastic,which can be tested by McLeod-Li test and Engle Lagrange multiplier test.In such cases,the GARCH model of hydrological processes is established in this article.First,the seasonal factors in the sequence are removed.Second,the traditional ARMA model is established.Then,the GARCH model is used to correct the residual.At last,the daily runoff data in 1949-2001 of Yichang Hydrological Station is taken to be an example.The result shows that compared to the traditional ARMA model,the GARCH model has the ability to predict more accurate confidence intervals under the same confidence level.展开更多
文摘Any linear transform matrix can be used to easily calculate a consistent form, and a plurality of conversion can be easily connected together by matrix multiplication. When performing file transfers, you can encrypt files matrix transformation. Article presents a matrix-based electronic document encryption and decryption algorithm, which relies on a special class of matrices combinatorial problems, the method to improve the security of electronic document system is feasible and effective, and finally give the source code and programming software.
文摘The present paper analyzes the strategic choices for learning Chinese by 300 Hungarian university students. The survey summarizes the most often used Chinese language learning strategies and verbal language learning strategies of Hungarian language learners one by one. With the help of the method of multidimensional scaling, the survey got to the result that the preference of the general language learning strategies is characterized by a strong opposition. In the case of the choice and use of three strategies--the social, the meta-cognitive and the cognitive strategies, language learners prefer a combined choice or non-choice. While in the use of the emotional, compensation and memorization strategies, a strong opposition emerges. Those using memorization strategies less prefer the emotional and the compensation strategies. This is true vice versa as well, those using emotional strategies, use memorization and compensation strategies less often. While the relation of the general language learning strategies was characterized by a certain opposition, in the use of the verbal strategies a strict continuity could be detected. Hungarian language learners consider the use of almost all verbal strategies with few exceptions to be successful in their communication. The results of the Variables path analysis with Partial Least-Squares Estimation （LVPLS） model revealed all those connections that structurally exist among the three exogen background latent variables （language level, language learner style and the ascriptive background） and the two endogen latent variables （the language learning strategies and the verbal strategies）. All of these latent variables measured with several manifest variables of the second exogen background variables, the language learning style showed the biggest affect to strategy use, this variable influences the successfulness of the learning of Chinese most strongly.
基金Project supported by the Zhejiang Provincial Natural Science Foundation of China(No.LY17F020015)the Fundamental Research Funds for the Central Universities,China(No.2017FZA5016)+1 种基金the Chinese Knowledge Center of Engineering Science and Technology(CKCEST)the MOE Engineering Research Center of Digital Library.
文摘Online encyclopedias such as Wikipedia provide a large and growing number of articles on many topics.However,the content of many articles is still far from complete.In this paper,we propose Ency Catalog Rec,a system to help generate a more comprehensive article by recommending catalogs.First,we represent articles and catalog items as embedding vectors,and obtain similar articles via the locality sensitive hashing technology,where the items of these articles are considered as the candidate items.Then a relation graph is built from the articles and the candidate items.This is further transformed into a product graph.So,the recommendation problem is changed to a transductive learning problem in the product graph.Finally,the recommended items are sorted by the learning-to-rank technology.Experimental results demonstrate that our approach achieves state-of-the-art performance on catalog recommendation in both warm-and cold-start scenarios.We have validated our approach by a case study.
基金supported by the National Hi-Tech Research and Development Program of China ("863" Project) (Grant No. 2012BAB02B04)
文摘Uncertainty analysis and risk analysis are two important areas of modern water resource management,in which accurate variance estimation is required.The traditional runoff model is established under the assumption that the variance is a constant or it changes with the seasons.However,hydrological processes in the real world are often heteroscedastic,which can be tested by McLeod-Li test and Engle Lagrange multiplier test.In such cases,the GARCH model of hydrological processes is established in this article.First,the seasonal factors in the sequence are removed.Second,the traditional ARMA model is established.Then,the GARCH model is used to correct the residual.At last,the daily runoff data in 1949-2001 of Yichang Hydrological Station is taken to be an example.The result shows that compared to the traditional ARMA model,the GARCH model has the ability to predict more accurate confidence intervals under the same confidence level.
