Seminar

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Thursday, September 17, 2020 11:00 am - 11:00 am EDT (GMT -04:00)

PhD Seminar • Natural Language Processing — Where’s the Question? A Multi-channel Deep Convolutional Neural Network for Question Identification in Textual Data

Please note: This PhD seminar will be given online.

Georgios Michalopoulos, PhD candidate
David R. Cheriton School of Computer Science

Supervisors: Professors Helen Chen and Ian McKillop

In this study, we investigated the key characteristics exhibited by questions in medical narrative data (e.g., review logs) in order to uncover the most impactful variables on data quality issues during the data entry and review process of a real-word clinical system.

Wednesday, July 8, 2020 3:00 pm - 3:00 pm EDT (GMT -04:00)

PhD Seminar • Symbolic Computation — Fast Computation of the Smith Form of a Nonsingular Integer Matrix

Please note: This PhD seminar will be given online.

Stavros Birmpilis, PhD candidate
David R. Cheriton School of Computer Science

Any nonsingular matrix $A \in \mathbb{Z}^{n\times n}$ is unimodularly equivalent to a unique diagonal matrix $S = diag(s_1, s_2, \ldots, s_n)$ in Smith form. The diagonal entries, the invariant factors of $A$, are positive with $s_1 \mid s_2 \mid \cdots \mid s_n$, and unimodularly equivalent means that there exist unimodular (with determinant ±1) matrices $U, V \in \mathbb{Z}^{n\times n}$ such that $UAV = S$.