Modern Information Retrieval - temporal summary (1)

번역의 중요성을 알고는 있지만 늘 잊어버리는 나 자신을 위해서...

2.3 Retrieval: Ad hoc and Filtering (p21)
...the documents in the collection remain relatively static while new queries are submitted to the system.
This operational mode has been termed ad hoc retrieval...
A similar but distinct task is one in which the queries remain relatively static
while new documents come into the system (and leave).
For instance, this is the case with the stock market and with news wiring services.
This operational mode has been termed filtering.

음... 한마디로 정의하기 어렵지만 ad hoc retrieval은 주어진 집합내에서 질의를 연결하는 것이고, filtering은 주어진 질의에 집합을 연관시키는 것이라 할까...