There are various AI techniques you could apply, but I've also used "keyword weight tables" for similar auto-classification tasks. Simplified Example: (Word)

There are various AI techniques you could apply, but I've also used "keyword weight tables" for similar auto-classification tasks. Simplified Example: (Word) | (Category) | (Weight) COBOL | Programming | 7 Python | Programming | 3 Python | Animals | 3 Java | Programming | 3 Java | Drinks | 3 ("COBOL" is generally unambiguous so we give it a high weight.) You run all the words of the description thru it and the final "best guess" is the category with the highest score: the weight sum. Book titles may be too open-ended, but I was dealing with domain-specific lingo. For example, it could be used for customer email routing for specialized services or products. It will require human inspection and tuning to get decent results.