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IPC Subgroup
G06F 18/2135

based on approximation criteria, e.g. principal component analysis

Introduced: January 2023

Full Title

Pattern recognition > Analysing > Design or setup of recognition systems or techniques; Extraction of features in feature space; Blind source separation > Feature extraction, e.g. by transforming the feature space; Summarisation; Mappings, e.g. subspace methods > based on approximation criteria, e.g. principal component analysis

Classification Context

Section:
PHYSICS
Class:
COMPUTING OR CALCULATING; COUNTING
Subclass:
ELECTRIC DIGITAL DATA PROCESSING

Description

G06F18/2135 covers feature extraction methods that reduce the dimensionality of a pattern-recognition feature space using approximation criteria, most prominently principal component analysis (PCA). Techniques in this group project high-dimensional data onto a lower-dimensional subspace chosen to approximate the original data as closely as possible, for example by maximising retained variance through eigendecomposition or singular value decomposition. Nonlinear variants based on manifold embedding are classified in G06F18/21355, while mappings selected for topology preservation, such as self-organising maps, fall under G06F18/2137.

Filing statistics

IPC G06F 18/2135 belongs to the parent subclass G06F, which recorded 2,990,091 patent applications worldwide between 2013 and 2023. Annual filings grew from 193,009 in 2013 to 380,314 in 2023 (+97%). The most active applicants in class G06 are SAMSUNG ELECTRONICS COMPANY (66,669 applications), IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) (62,313 applications) and MICROSOFT TECHNOLOGY LICENSING (41,918 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor class G06, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 66,669
  2. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 62,313
  3. MICROSOFT TECHNOLOGY LICENSING US 41,918
  4. GOOGLE US 32,969
  5. SGCC(STATE GRID CORPORATION OF CHINA) 30,822
  6. INTEL CORPORATION US 30,010
  7. TENCENT TECHNOLOGY (SHENZHEN) COMPANY 28,235
  8. HUAWEI TECHNOLOGIES COMPANY CN 26,079
  9. APPLE US 21,891
  10. HUAWEI TECHNOLOGIES COMPANY 20,505