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County area plowland natural quality evaluation method based on random forest

A quality evaluation and random forest technology, applied in geographic information databases, structured data retrieval, resources, etc., can solve the evaluation errors of natural quality of cultivated land in counties, cannot objectively reflect the actual situation of natural quality of cultivated land, and the weight assignment of evaluation indicators is easily affected by Human subjective factors and other issues to achieve the effect of avoiding errors

Inactive Publication Date: 2017-07-14
CHINA AGRI UNIV
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Problems solved by technology

However, the weight assignment of evaluation indicators is susceptible to the influence of human subjective factors, resulting in errors in the evaluation of the natural quality of cultivated land in the county, which cannot objectively reflect the actual situation of the natural quality of cultivated land

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  • County area plowland natural quality evaluation method based on random forest
  • County area plowland natural quality evaluation method based on random forest
  • County area plowland natural quality evaluation method based on random forest

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] figure 1 Shows a flow chart of the random forest-based natural quality evaluation method for county cultivated land provided by an embodiment of the present invention, see figure 1 , the method includes the following steps:

[0024] Step S1: Obtain all index data of all cultivated map spots in the first county;

[0025] In this embodimen...

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Abstract

The invention provides a county area plowland natural quality evaluation method and system based on random forest. The objectivity of county area plowland natural quality evaluation is improved. The method comprises the steps that all index data of all plowland pattern spots in a first county area are acquired; according to the rules of the index area of the first county area and according to the quantified interval range of each index in the first county area, the index is scored to acquire the score of the index; the score of each index is normalized to acquire each normalized index score datum; each normalized index score datum is used as input, and the natural quality index is used as output to train a first random forest plowland natural quality evaluation model; and the normalized index score of each plowland pattern spot to be evaluated in a second county area is input into the first random forest plowland natural quality evaluation model to acquire the natural quality index of the plowland pattern spot to be evaluated.

Description

technical field [0001] The invention relates to the field of survey and evaluation of cultivated land quality, in particular to a random forest-based natural quality evaluation method and system for county cultivated land. Background technique [0002] The investigation and evaluation of the quality of the existing cultivated land has become an annual periodic work in our country, which shows that our country has continuously increased its emphasis on ensuring food security. Cultivated land quality evaluation work is of great significance for the country to grasp the changes in the quantity and quality of my country's cultivated land from a macro perspective, and to maintain the sustainable development of my country's agriculture. Therefore, it is of great practical significance to evaluate the cultivated land quality objectively and accurately. [0003] At present, the most commonly used evaluation method of cultivated land quality is to assign weights to the evaluation in...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/02G06Q10/06G06F17/30
CPCG06Q50/02G06F16/29G06Q10/06395
Inventor 杨永侠孟丹李岳张丽红孙婷朱德海杨建宇
Owner CHINA AGRI UNIV
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