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Wednesday, November 21, 2018 — 12:15 PM EST

Hemant Saxena, PhD candidate
David R. Cheriton School of Computer Science

We address the problem of discovering dependencies from distributed big data. Existing (non-distributed) algorithms focus on minimizing computation by pruning the search space of possible dependencies. However, distributed algorithms must also optimize data communication costs, especially in current shared-nothing settings. 

Wednesday, November 21, 2018 — 1:30 PM EST

Abel Molina, PhD candidate
David R. Cheriton School of Computer Science

Yao (1993) proved that quantum Turing machines and uniformly generated quantum circuits are polynomially equivalent computational models: t >= n steps of a quantum Turing machine running on an input of length n can be simulated by a uniformly generated family of quantum circuits with size quadratic in t, and a polynomial-time uniformly generated family of quantum circuits can be simulated by a quantum Turing machine running in polynomial time.

Friday, November 23, 2018 — 1:30 PM EST

Xinan Yan, PhD candidate
David R. Cheriton School of Computer Science

Monday, November 26, 2018 — 10:30 AM EST

N. Asokan, Department of Computer Science
Aalto University, Finland

All kinds of previously local services are being moved to cloud settings. While this is justified by the scalability and efficiency benefits of cloud-based services, it also raises new security and privacy challenges. Solving them by naive application of standard security/privacy techniques can conflict with other functional requirements. In this talk, I will outline some cloud-assisted services and the conflicts that arise while trying to secure these services.

Monday, November 26, 2018 — 12:30 PM EST

Mohammad Rashidujjaman Rifat, PhD candidate
Department of Computer Science, University of Toronto

Monday, November 26, 2018 — 2:00 PM EST

Li Liu, PhD candidate
David R. Cheriton School of Computer Science

Entanglement is a type of resource used in quantum information theory that gives correlations that cannot be simulated using classical probability theory. It is known that entanglement cannot be created locally. 

Monday, November 26, 2018 — 3:30 PM EST

Robin Cohen
David R. Cheriton School of Computer Science

Wednesday, November 28, 2018 — 12:15 PM EST

Jaemyung Kim, PhD candidate
David R. Cheriton School of Computer Science

Transaction durability guarantees the ability to recover committed transactions from failures. However, making every transaction durable impacts transaction processing performance. Some ad-hoc durability mechanisms (e.g., delayed durability) improve performance, but they risk transactions losing their effects due to failures. The current one-size-fits-all transaction durability model does not solve this problem.

Thursday, November 29, 2018 — 10:30 AM EST

Nick Rollick, Graduate student
Department of Pure Mathematics

For this week's seminar, I invite you to join me for an informal chat about my experiences using "reflective responses" in my elementary number theory course. In these bi-weekly formal reflective assignments, my students were asked to set and monitor learning goals, identify gaps in understanding, and ponder the value and importance of their course material. Most importantly, I responded in detail to every student's reflection, creating a meaningful course-long conversation.

Thursday, November 29, 2018 — 1:30 PM EST

Anastasia Kuzminykh, PhD candidate
David R. Cheriton School of Computer Science

Video-mediated communication has long struggled with asymmetrical constraints on situational awareness, especially in hybrid work meetings between collocated and remote participants. Advances in computer vision offer exciting opportunities to augment mediated situational awareness, but we must first understand what is meaningful to capture and present.

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