TDT Clarification

UMass at TDT 2004

Topic Detection classifies stories into different topics, but HTD requires more than that. Is there any other entities between a story and a topic? [10] views a topic as a structure of inter-related events, which gives us a good hint for this new task. Experiments in [10] show that time locality is a very useful attribute in event organization, and it can also help to solve the complexity probl...

Sample Sizes for the Transmission Disequilibrium Tests: Tdt, S-tdt and 1-tdt

The transmission/disequilibrium test (TDT) is widely used to detect the linkage disequilibrium between a candidate locus (a marker) and a disease locus. The TDT is a family-based design and has the advantage that it is a valid test when population stratification exists. The TDT requires the marker genotypes of affected individuals and their parents. For diseases with late age of onset, it is di...

UMass at TDT 2000

We had two thrusts to our research, neither of which was ready to be deployed in this evaluation. We report here on the results from the training data, in all cases explored within the link detection task. In the first direction, we looked more carefully at score normalization across different languages and media types. We found that we could improve results noticeably though not substantially ...

Clarification

Mitre Tdt-2000 Segmentation System

We present the design and development of a Hidden Markov Model for the division of news broadcasts into story segments. Model topology, and the textual features used, are discussed, together with the non-parametric estimation techniques that were employed for obtaining estimates for both transition and observation probabilities. Visualization methods developed for the analysis of system perform...