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Standing queries
The path from IR to text classification:
You have an information need to monitor, say:
Unrest in the Niger delta region
You want to rerun an appropriate query periodically to find new news items on this topic
You will be sent new documents that are found
I.e., it’s not ranking but classification (relevant vs. not relevant)
Such queries are called standing queries
Long used by “information professionals”
A modern mass instantiation is Google Alerts
Standing queries are (hand-written) text classifiers
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