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5 results on '"Pan, Jiqing"'

3. Finding the optimal number of low dimension with locally linear embedding algorithm.

Author

Yang, Tao, Fu, Dongmei, Meng, Jintao, Pan, Jiqing, and Burget, Radim

Subjects
ALGORITHMS, EUCLIDEAN distance, HIGH-dimensional model representation, MATRICES (Mathematics), MAXIMA & minima, DISTANCES
Abstract

1) The problem this paper is going to solve is how to determine the optimal number of dimension when using dimensionality reduction methods, and in this paper, we mainly use local linear embedding (LLE) method as example. 2) The solution proposed is on the condition of the parameter k in LLE is set in advance. Firstly, we select the parameter k , and compute the distance matrix of each feature in the source data and in the data after dimensionality reduction. Then, we use the Log-Euclidean metric to compute the divergence of the distance matrix between the features in the original data and in the low-dimensional data. Finally, the optimal low dimension is determined by the minimum Log-Euclidean metric. 3) The performances are verified by a public dataset and a handwritten digit dataset experiments and the results show that the dimension found by the method is better than other dimension number when classifying the dataset. [ABSTRACT FROM AUTHOR]

Published
2020
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5. Optimization of Environmental Investment Strategy in Water Resource of Agricultural Production

Author

Pan Jiqing, Chen Quan, and Shu Yu

Subjects
Agricultural Environment Total Investment Fund Optimized Method, Resource (biology), Status quo, Investment strategy, business.industry, Natural resource economics, media_common.quotation_subject, Environmental resource management, Investment (macroeconomics), Energy(all), Agriculture, Return on investment, Monitoring data, Agricultural productivity, business, media_common
Abstract

With the development of agriculture, the protection of agricultural environment plays a critical role. Facing the status quo of unique environmental investment planning in our country's agriculture, through the existing theories and formulas, the functional model of the relationship between management investment and environmental loss is constructed, which is based on the monitoring data in many years. Then, the total optimized fund of environmental investment in agricultural projections will be determined from the aspect of optimizat ion. In this paper, some useful help for optimizing investment structure are provided to solve the problems of environmental investment deficiency in our agriculture.

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