In this work, the basic units considered were utterances as given by the partitioning step of the ASR system, thus limiting possible topic boundaries to utterance boundaries.
Our discussion bounced between a variety of boundary-related topics, from Kashmir and the Falkland Islands to Juarez.
Recall and precision on topic boundaries are considered for evaluation purposes after alignment between reference and hypothesized boundaries, with a tolerance on boundary locations of, respectively, 10 and 30 s for news and reports, while different trade-offs between precision and recall are obtained by varying in (7).
Who knew that these throwaway remarks would lead to what has become an international cause celebre, a subject for two prime ministers, David Cameron and Gordon Brown, to raise with the US president, a campaign that has crossed political boundaries and a topic that has generated millions of words in newspapers and hours of television coverage?
A total of 1,180 topic boundaries are obtained for the news corpus and 86 for reports.
One always expects a commentary of this sort to begin with a clear and succinct definition of the scope and boundaries of the topic under discussion.
This study proposes to use neural networks for defining the topic boundaries in search engine transaction logs, and is a part of ongoing research on automatic new topic identification.
The primary goal is obviously to ensure that two semantically related words, for example, "car" and "drive", contribute to the lexical cohesion, thus avoiding erroneous topic boundaries between two such words.
As an alternative to lexical cohesion, discourse markers, obtained from a preliminary learning process or provided by a human expert, can also be used to identify topic boundaries [26, 27].
Scoping reviews allow the researcher to (1) clarify working definitions and conceptual boundaries of a topic area, (2) outline what is already known and identify gaps in existing research, and (3) map existing literature of existing evidence.
Instructors then review these revised maps, addressing the boundaries of the topic as delineated in the concept map (not so broad that that a reader might struggle to discern what information is most relevant but not so narrow that insufficient information is provided), the research question under consideration, and the general appropriateness of the propositions in the map.
