Inferring object attributes

Apparatus comprising processing circuitry, the processing circuitry comprising:

• an object generation instruction determination module to derive object generation instructions for generating an object using additive manufacturing based on an object model describing at least part of the object, wherein the object generation instruction determination module is, to an extent that object model is deficient for providing a basis for derivation of object generation instructions, to infer at least one attribute for the object and to derive object generation instructions based on the object model data and the inferred attribute.

A non-transitory machine readable medium storing instructions which, when executed by a processor cause the processor to:

• derive, based on object model data describing an object to be generated by additive manufacturing, object generation instructions for generating the object based on the object model data;
• and
• and, if it is determined that the object model data comprises a data deficiency for deriving the object generation instructions, infer at least one attribute for the object and derive the object generation instructions based on the object model data and the inferred attribute.