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Genetic attribute reduction-based palaeontological lineage evolution analysis method

A technology of attribute reduction and analysis method, applied in the field of bioinformatics, can solve problems such as failure, affecting the accuracy and stability of species pedigree analysis, and achieve the effect of improving stability

Active Publication Date: 2018-09-07
NORTHWEST UNIV(CN)
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Problems solved by technology

However, when this method judges the attribution of species with missing data, when the corresponding attributes are missing, the current concept sample template will be invalidated, which will affect the accuracy and stability of species pedigree analysis

Method used

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  • Genetic attribute reduction-based palaeontological lineage evolution analysis method
  • Genetic attribute reduction-based palaeontological lineage evolution analysis method
  • Genetic attribute reduction-based palaeontological lineage evolution analysis method

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Embodiment Construction

[0046] like Figure 1 to Figure 8 As shown, the present invention discloses a method for analyzing the evolution of paleontological lineages based on genetic attribute reduction, which specifically includes the following steps:

[0047] Step 1, establishment of pedigree planting tree

[0048] According to the prior knowledge of paleontologists, or data with a missing data ratio of less than 5%, use the maximum parsimony method to build a pedigree planting tree; due to the ambiguity of the later tasks, the initial concept establishment is very important, which is human beings. The key to less bias in complex cognitive tasks.

[0049] Step 2: Establish a conceptual decision-making tree

[0050] Step 2.1, according to the pedigree planting tree obtained in step 1, establish species nodes at all positions where branches appear in the pedigree planting tree;

[0051] Step 2.2, as in figure 1 As shown, the concept sample template set of each species node in the pedigree tree is ...

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Abstract

The invention discloses a genetic attribute reduction-based palaeontological lineage evolution analysis method. The method comprises the basic steps of establishing a lineage species tree; constructing a concept sample template set of nodes in the lineage species tree by utilizing a genetic attribute reduction algorithm, and by taking the concept sample template set as a decision basis, establishing a concept decision species tree; by utilizing matching degrees between attributes of species and concept sample templates of the species tree, determining the positions of the species containing missing data in the lineage species tree; and through a bootstrap method, performing data re-sampling to obtain likelihood values of the positions of grafted species in the lineage tree, thereby finishing species grafting, and constructing a palaeontological lineage tree. Compared with a method for constructing the lineage tree by a maximum parsimony method and attribute reduction, the problems of concept sample template failure and difficulty in stable construction of the palaeontological lineage tree due to a large amount of the missing data are effectively solved; and the accuracy and stability of species lineage analysis are improved.

Description

technical field [0001] The invention belongs to the technical field of bioinformatics, and in particular relates to a method for analyzing the evolution of paleontological lineages based on genetic attributes. Background technique [0002] The construction of paleontological family trees is an important part of bioinformatics and the main way to explore the evolutionary history of life. The hierarchical genealogy tree shows the evolution process of species in detail, and reveals the evolutionary relationship and quantitative differences between species. The genealogy analysis of early paleontology has important scientific significance for tracing the origin of life. [0003] Different from the basic data of extant species research, in the early paleontological lineage evolution analysis, the species data can only rely on the observable morphological data of fossils, but due to the limitation of fossil excavation status and observable data, the obtained species attributes of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/12G06F19/18
CPCG16B5/00G16B20/00
Inventor 冯筠杜丽媛冯宏伟刘建妮韩健王红玉
Owner NORTHWEST UNIV(CN)
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