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E-commerce recommendation technology and system based on soft-set decision rule analysis

An e-commerce and soft decision-making technology, applied in the computer field, can solve problems such as affecting the application of correlation analysis technology, the overall sparse distribution of e-commerce product sales data, and dislike of e-commerce product ratings or verbal evaluations.

Active Publication Date: 2018-06-08
XIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These are the defects of the existing association relationship analysis technology, and it is these defects that affect the application of the existing association relationship analysis technology
[0007] 2. The basis of existing recommendation methods for e-commerce recommendations requires users to rate or evaluate e-commerce products, but in reality, most users of e-commerce platforms do not like to rate or verbally evaluate e-commerce products. E-commerce The platform only has e-commerce product sales data, and the overall distribution of e-commerce product sales data is also sparse

Method used

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  • E-commerce recommendation technology and system based on soft-set decision rule analysis
  • E-commerce recommendation technology and system based on soft-set decision rule analysis
  • E-commerce recommendation technology and system based on soft-set decision rule analysis

Examples

Experimental program
Comparison scheme
Effect test

example 6

[0126] Example 6. A probabilistic decision soft set (F, C, D) is shown in Table 1 below.

[0127] Table 1 Probabilistic Decision Soft Set (F, C, D)

[0128]

e 1

e 2

e 3

d

u 1

1

0

0

0

u 2

1

0

1

1

u 3

0

0

1

0

u 4

1

1

1

1

[0129] Among them, U={u 1 , u 2 , u 3 , u 4}, the normal probability distribution on U is: P({u 1})=1 / 3,P({u 2})=1 / 3,P({u 3})=1 / 6,P({u 4})=1 / 6, condition parameter set C={e 1 ,e 2}, the meaning of the parameter is e 1 ="headache", e 2 = "muscle pain", e 3 = "fever", the decision parameter set D = {d}, the meaning of the parameter is d = "flu".

[0130] The basic soft truth of each decision rule is: τ(e 1 →d)=2 / 3,τ(e 2 →d)=1,τ(e 3 → d) = 5 / 6.

[0131] The conditional soft truth of each decision rule is: γ(e 1 →d)=3 / 5, γ(e 2 →d)=1,γ(e 3 → d) = 3 / 4.

[0132] The joint soft truth of each decision rule is: ρ(e 1 →d)=5 / 9, ρ(e 2 →d)=1 / 6, ρ(e...

example 7

[0133] Example 7. (1) The three truth values ​​of a decision rule describe the numerical characteristics of the decision rule from three different perspectives. Generally speaking, the soft truth focuses on the validity of the decision rule; the conditional soft truth emphasizes the condition The certainty of the implication relationship between the attribute and the decision attribute; the joint soft truth takes into account both the validity of the decision rule and the support strength of the conditional attribute to the decision rule.

[0134] (2) It can also be seen from Example 6 that although the decision rule e 2 → d has high validity and certainty (strength 1), decision rule e 2 → condition attribute e in d 2 The support strength for the decision rule is very low (strength is 1 / 6). Intuitively, we can understand it as: Since u 2 also satisfy e 1 and e 3 , thus supporting the decision rule e 2 → Evidence u of d 2 May not actually work. In other words, u 2 His "f...

example 8

[0170] Example 8. Analysis of decision rules for some patient decision information systems.

[0171] Table 2 Certain Patient Decision Information Systems

[0172]

[0173]

[0174] For the convenience of description, the above attributes and attribute values ​​are respectively symbolized, where a = "headache", b = "muscle pain", c = "body temperature", d = "flu". a = two attribute values ​​of "headache" Yes and no respectively use a 1 ,a 2 Represent; b = "muscle pain" two attribute values ​​yes, no use b respectively 1 ,b 2 Indicate; the three attribute values ​​of c = "body temperature" are very high, high, and normal, respectively use c 1 ,c 2 ,c 3 Represent; the two attribute values ​​of d=“influenza” are yes and no respectively use d 1 , d 2 .Using the rough set theory to reduce the attributes of the information system, the minimum attribute reduction set is {headache (a), body temperature (c)}. The reduced and symbolized attribute table is converted into a s...

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Abstract

The invention belongs to the technical field of computers, and discloses an e-commerce recommendation technology and system based on soft-set decision rule analysis. A propositional logical reasoninglanguage based on soft sets is established, and in the reasoning language, an atomic formula is a parameter e in a soft set, a function value F(e) of the parameter e is a value assignment set of the atomic formula e, and a soft decision rule is an implicit logical formula formed by atomic formulas on a decision soft-set; quantitative indexes of soft truth degrees, conditional soft truth degrees, joint soft truth degrees, soft similarity degrees, logical soft degrees and the like are introduced to evaluate soft decision rules from different aspects of adequacy, necessity and rationality; a decision system is transformed into the decision soft set, and a soft-decision-rule extraction method of the incomplete decision system is provided; and a data analysis method based on propositional logicand the soft set is applied to e-commerce recommendation. Through practical examples of the invention, it is illustrated that the methods provided by the invention are all effective; and theoreticalanalysis of the technology has innovativeness, method construction novelty and technical-means practicability.

Description

technical field [0001] The invention belongs to the field of computer technology, and in particular relates to an e-commerce recommendation technology and system based on analysis of soft set decision rules. Background technique [0002] Soft set theory is a mathematical theory to describe and deal with uncertainty established by Professor Molodtsov. A soft set is a two-tuple composed of a parameter set and a set-valued mapping on the power set of the domain of discourse, or a soft set is a whole composed of some subsets organized by certain parameters on the domain of discourse. The subset corresponding to each parameter in the soft set is called an approximate set. In the soft set theory, there is no restriction on the approximate set. The approximate set can be an empty set, and the intersection of the approximate sets corresponding to different parameters may be non-empty. This makes the soft set concept cover a very wide range, and has the characteristics of flexibilit...

Claims

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Application Information

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IPC IPC(8): G06Q30/06G06K9/62G06F17/30
CPCG06F16/26G06Q30/0631G06F18/24147
Inventor 吴霞钟嘉鸣张家录谷玉
Owner XIANGNAN UNIV
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