Patent · US Active

Method and system for automatic discovery of topics and trends over time

US11520817B2 · kind B2 · utility

1Cited by

1References

14Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Bernt Andrassy · Munich, DE
Pankaj Gupta · Palo Alto, US
Subburam Rajaram · Munich, DE

Key dates

Filing date	Jul 16, 2018
Grant date	Dec 6, 2022
Priority date	—
Expiry date	May 19, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG06F40/30
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method and system for automatically performing a discovery of topics within temporal ordered text document collections are provided. The method includes generating a bag of words vector for each text document collection using a predefined dictionary. The method also includes iteratively calculating, based on the generated bag of words vectors, for each text document collection, a hidden topic vector representing topics of the respective text document collection using a calculated hidden state vector memorizing a hidden state of all previous text document collections.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.