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Topic detection and tracking (TDT) applications aim to organize the temporally ordered stories of a news stream according to the events. Two major problems in TDT are new event detection (NED) and topic tracking (TT). These problems focus on finding the first stories of new events, and identifying all subsequent stories on a certain topic defined by a small(More)
1. SYSTEM OVERVIEW Multi-source news portals, a relatively new technology, receive and gather news from several Web news providers. These systems can make the news more accessible, especially by providing event-oriented groupings by detecting and tracking the first stories of previously unseen events. In this short article we briefly demonstrate the first(More)
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