Compound Substitution Program Using Partial Structure Frequency Scoring

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Solution Overview

Problem

Existing methods face difficulties in specifying compounds with similar properties by substituting partial structures, as the similarity in structure does not always translate to similar properties, leading to inaccurate identification of compounds with analogous characteristics.

Innovation Solution

A compound substitution program that analyzes input compounds, identifies partial structures, and substitutes them with related structures based on a knowledge graph and score calculations to determine compounds with similar properties, ensuring the generated compounds have a score equal to or above a threshold, thereby accurately identifying similar compounds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If compound substitution is performed based solely on structural similarity, then compounds with similar structures can be identified, but the accuracy of identifying compounds with similar properties deteriorates

Engineering Contradiction:
Improvecompound similarity identification accuracyVSAvoidproperty similarity reliability
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The patent introduces a scoring mechanism that evaluates multiple parameters including appearance frequency of partial structure groups in text data, not just structural similarity. This multi-parameter evaluation system changes the basis of compound selection from purely structural to property-informed, resolving the contradiction between structural similarity and property similarity accuracy

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system uses appearance frequency information from text data as feedback to evaluate and score potential compound substitutions. This feedback loop ensures that substituted compounds are not only structurally similar but also have comparable properties as evidenced by their co-occurrence patterns in chemical literature, thereby improving property similarity reliability

Inventive Principle:
Principle #23Feedback

2Manufacturing precision

If traditional compound substitution methods are used, then processing speed is maintained, but the precision of compound specification deteriorates

Engineering Contradiction:
Improvecompound specification precisionVSAvoidprocessing time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent pre-calculates and stores appearance frequency information of partial structure groups in text data before substitution is needed. This preliminary preparation allows the substitution process to quickly access pre-computed frequency data rather than calculating it in real-time, maintaining processing speed while enabling precision through frequency-based scoring

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS20230115396A1Computer-readable recording medium storing compound substitution program, method, and device
Publication Date: 2023.04.13 FUJITSU LTD
  • US20230115396A1 patent drawing
  • US20230115396A1 patent drawing
  • US20230115396A1 patent drawing

AI summary

A non-transitory computer-readable recording medium stores a compound substitution program for causing a computer to execute processing including: specifying a first partial structure included in a first compound; referring to information that indicates a relationship between a plurality of partial structures and selecting a second partial structure related to the first partial structure; determining whether or not a score calculated based on an appearance status of a group that includes the first partial structure and the second partial structure in a plurality of pieces of text data is equal to or more than a threshold; and generating information that indicates a second compound obtained by substituting the first partial structure of the first compound with the second partial structure, in a case where it is determined that the score is equal to or more than the threshold.