32. A non-transitory computer-readable medium having encoded thereon instructions, wherein the instructions, when executed by a computing apparatus, cause the computing apparatus to: generate a first user interface for receiving, from a user, item information regarding at least one item of interest to the user, wherein the item of interest is an item offered for sale using a network-based service; automatically determine at least one category recommendation from vector representations of the received item information and at least one description for an item category maintained by a network-based service, wherein an item category is associated with a plurality of items and is determined to be a category recommendation if a similarity between the vector representation of the item information and the item category description is less than a threshold value; and generate a second user interface that enables a human reviewer to assign an item category to the item of interest to the user, the item category selected from the at least one category recommendation.
32. A non-transitory computer-readable medium having encoded thereon instructions, wherein the instructions, when executed by a computing apparatus, cause the computing apparatus to: generate a first user interface for receiving, from a user, item information regarding at least one item of interest to the user, wherein the item of interest is an item offered for sale using a network-based service; automatically determine at least one category recommendation from vector representations of the received item information and at least one description for an item category maintained by a network-based service, wherein an item category is associated with a plurality of items and is determined to be a category recommendation if a similarity between the vector representation of the item information and the item category description is less than a threshold value; and generate a second user interface that enables a human reviewer to assign an item category to the item of interest to the user, the item category selected from the at least one category recommendation. 38. The non-transitory computer-readable medium of claim 32 , wherein the categorization service is further operative to generate the category vector.