Patent · US Active

Method and system for automated column type annotation

US12253996B2 · kind B2 · utility

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12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Martin Ringsquandl · Rosenheim, DE
Mitchell Joblin · Munich, DE
Aneta Koleva · Munich, DE
Swathi Shyam Sunder · Munich, DE

Key dates

Filing date	Jun 20, 2023
Grant date	Mar 18, 2025
Priority date	—
Expiry date	Sep 14, 2043

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/285
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A solution for automated column type annotation maps each column contained in a table to a column annotation class. A pre-processor transforms the table into a numerical tensor representation by outputting a sequence of cell tokens for each cell in the table. A table encoder encodes the sequences of cell tokens and a column annotation label for each column into body cell embeddings. A body pooling component processes the body cell embeddings to provide column representations. A classifier classifies the column representations to provide for each column, confidence scores for each column annotation class. The method concludes with comparing the highest confidence score for each column with a threshold, and, if the highest confidence score for each column is above the threshold, annotating each column with the respective column annotation class.

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