Machine learning to integrate knowledge and natural language processing

Patent metadata

Field	Value
Publication number	US-10599780-B2
Application number	US-201916448159-A
Country	US
Kind code	B2
Filing date	Jun 21, 2019
Priority date	Jan 10, 2018
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

A system, computer program product, and method are provided to automate a framework for knowledge graph based persistence of data, and to resolve temporal changes and uncertainties in the knowledge graph. Natural language understanding, together with one or more machine learning models (MLMs), is used to extract data and a data relationship from structured and/or unstructured data, create an entry in the KG and selectively store the extracted data and data relationship in the KG, assign a veracity value to the stored data, create an asset value entry in a corresponding BC ledger, and store a BC identifier with the KG entry.

First claim

What is claimed is:

1. A computer system comprising:
a processing unit operatively coupled to memory;
an artificial intelligence (AI) platform, in communication with the processing unit and memory to manage data, including:
extract data and a data relationship from data selected from the group consisting of: structured data, unstructured data, and combinations thereof;
create an entry for the extracted data and data relationship in a knowledge graph (KG) and selectively store the extracted data and data relationship in the KG, including assign a veracity value to the stored data;
create an asset value entry in a blockchain (BC) ledger corresponding to the KG, the entry including the assigned veracity value;
store a BC identifier corresponding to the BC ledger entry with the KG entry; and

return a data element with a corresponding veracity score.

2. The system of claim 1 , further comprising the AI platform to:
partition data within the KG to create first and second partitions, and
populate and assign a first reliability value to first data in the first partition and a second reliability value to second data in the second partition, wherein the first and second reliability values are different.

3. The system of claim 1 , further comprising the AI platform to:
establish a link between two knowledge graphs, including compare and evaluate data elements in a second KG with data elements in a first KG, and selectively replace data elements based on a value selected from the group consisting of: reliability, feedback, and combinations thereof.

4. The system of claim 1 , wherein the data is stored in a node in the KG and the relationship is represented as an edge connecting two nodes, each node having a node level veracity value and each relationship having a relationship veracity value, wherein the relationship value is calculated based on the veracity values of the nodes in the relationship.

5. The system of claim 1 , further comprising the AI platform to:
extract data and a data relationship from a first KG, wherein the extracted data and data relationship from the first KG has a veracity value stored in a corresponding BC ledger;
extract data and a data relationship from a second KG, wherein the extracted data and data relationship from the second KG has a veracity value stored in the BC ledger;
evaluate the veracity value of the extracted data and data relationship from the first KG with the veracity value of the extracted data and data relationship from the second KG, the evaluation including an assessment of the veracity values to identify a modification to content in the first KG; and
modify a machine learning model (MLM) associated with the first KG based on the assessment.

6. The system of claim 5 , further comprising the AI platform to:
search the KG and identify new data and data relationships;
generate a list of the identified new data and data relationships present in the KG and absent from the machine learning model (MLM);
update the MLM with the generated list of data and data relationships; and
store the updated MLM in a MLM library as a new MLM.

7. A computer program product to process natural language, the computer program product comprising a computer readable storage device having program code embodied therewith, the program code executable by a processing unit to:
extract data and a data relationship from data selected from the group consisting of: structured data, unstructured data, and combinations thereof;
create an entry for the extracted data and data relationship in a knowledge graph (KG) and selectively store the extracted data and data relationship in the KG, including assign a veracity value to the stored data;
create an asset value entry in a blockchain (BC) ledger corresponding to the KG, the entry including the assigned veracity value;
store a BC identifier corresponding to the BC ledger with the KG entry; and
return a data element with a corresponding veracity score.

8. The computer program product of claim 7 , further comprising program code to:
partition data within the KG to create first and second partitions, and
populate and assign a first reliability value to first data in the first partition and a second reliability value to second data in the second partition, wherein the first and second reliability values are different.

9. The computer program product of claim 7 , further comprising program code to:
establish a link between two knowledge graphs, including compare and evaluate data elements in a second KG with data elements in a first KG, and selectively replace data elements based on a value selected from the group consisting of: reliability, feedback, and combinations thereof.

10. The computer program product of claim 7 , wherein the data is stored in a node in the KG and the relationship is represented as an edge connecting two nodes, each node having a node level veracity value and each relationship having a relationship veracity value, wherein the relationship value is calculated based on the veracity values of the nodes in the relationship.

11. The computer program product of claim 7 , further comprising program code to:
extract data and a data relationship from a first KG, wherein the extracted data and data relationship from the first KG has a veracity value stored in a corresponding BC ledger;
extract data and a data relationship from a second KG, wherein the extracted data and data relationship from the second KG has a veracity value stored in the BC ledger;
evaluate the veracity value of the extracted data and data relationship from the first KG with the veracity value of the extracted data and data relationship from the second KG, the evaluation including an assessment of the veracity values to identify a modification to content in the first KG; and
modify a machine learning model (MLM) associated with the first KG based on the assessment.

12. The computer program product of claim 11 , further comprising program code to:
search the KG and identify new data and data relationships;
generate a list of the identified new data and data relationships present in the KG and absent from the machine learning model (MLM);
update the MLM with the generated list of data and data relationships; and
store the updated MLM in a MLM library as a new MLM.

13. A method for processing natural language, comprising:
extracting data and a data relationship from data selected from the group consisting of: structured data, unstructured data, and combinations thereof;
creating an entry for the extracted data and data relationship in a knowledge graph (KG) and selectively storing the extracted data and data relationship in the KG, including assigning a veracity value to the stored data;
creating an asset value entry in a blockchain (BC) ledger corresponding to the KG, the entry including the assigned veracity value;
storing a BC identifier corresponding to the BC ledger entry with the KG entry; and
returning a data element with a corresponding veracity score.

14. The method of claim 13 , further comprising:
partitioning data within the KG to create first and second partitions, and
populating and assigning a first reliability value to first data in the first partition and a second reliability value to second data in the second partition, wherein the first and second reliability values are different.

15. The method of claim 13 , further comprising:
establishing a link between two knowledge graphs, including comparing and evaluating data elements in a second KG with data elements in a first KG, and selectively replacing data elements bas

Assignees

• IBM

Inventors

• Bacarella David
• Barnebee Iv James H
• Lawrence Nicholas
• Patel Sumit

Classifications

• G06N5/022 Primary

  Knowledge engineering; Knowledge acquisition · CPC title

• G06N20/00

  Machine learning · CPC title

• G06F16/367

  Ontology · CPC title

• G06F40/295

  Named entity recognition · CPC title

• G06F40/30

  Semantic analysis · CPC title