Code-based pattern extraction and application in a named entity recognition pipeline

A computer-implemented method comprising:

• generating, by a device operatively coupled to a processor, a pattern that represents a cluster of entities, wherein the entities have a common type;
• and
• typing, by the device, an untyped entity based on the pattern, wherein the common type is assigned to the untyped entity;
• determining, by the device, whether the pattern is accurately identifying an untyped entity has the same format as a typed entity;
• identifying, by the device, the pattern in a statement, wherein the statement provides context regarding the untyped entity;
• determining, by the device, whether the context matches the type assigned to the untyped entity by the pattern;
• in response to a determination that the context matches the type assigned by the pattern to the untyped entity, retaining the pattern;
• and
• updating, by the device, one or more semantic models of a named entity recognition model based on the pattern.

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to:

• generate, by the processor, a pattern that represents a cluster of entities, wherein the entities have a common type;
• and
• type, by the processor, an untyped entity based on the pattern, wherein the common type is assigned to the untyped entity;
• and
• identify, by the processor, the pattern in a statement, wherein the statement provides context regarding the untyped entity;
• determine, by the processor, whether the context matches the type assigned to the untyped entity by the pattern;
• in response to a determination that the context matches the type assigned by the pattern to the untyped entity, retain the pattern;
• and
• update, by the processor, one or more semantic models of a named entity recognition model based on the pattern.