What Is an NLP Service?

Amazon Comprehend is an NLP service. The overall goal of an NLP service is to make machines understand our spoken and written language. Virtual assistants, such as Alexa or Siri, use NLP to produce insights from input data. The input data is structured by a language, which has a unique grammar, syntax, and vocabulary. Thus, processing text data requires identifying the language first and applying subsequent rules to identify the document's information. NLP's general task is to capture this information as a numeral representation. This general task is split into specific tasks, such as identifying languages, entities, key phrases, emotional sentiments, and topics.

Figure 2.4: Amazon Comprehend data flow

As we discussed earlier, Amazon Comprehend uses pre-trained models to perform document analysis tasks. This is very good because it enables a business to develop capabilities without going through an exhaustive AI model training...