By targeting web, internal, and proprietary resources, Watson finds both textual and graphic material relevant to the document as it is being written. By knowing about the user and the user's needs, Watson is able to retrieve information without having to be asked or told to find information. Pointer comes originally from Pitch. Nov. 30, 1999. I've since read their research paper on Watson and have increased my rating as a result.
Detectors work on structured documents.
For example, an address detector will find the address on a Web page and can open a small window showing a map and directions for that address. This alliance will make a lot of noise. DICA monitors Web pages previously found by the agent's user to be relevant for any changes. It then compares these changes against a user model, classifies them as potentially interesting or not, and reports the interesting changes to the user. The user model is derived by accepting relevance feedback on changes previously found.