Colloquium Archive

How does AI Perceive You?

Nina Marhamati
Assistant Professor
Computer Science Sonoma State University

02/10/2021

Have you ever wondered how Siri, Alexa, or any chat-bot perceives you? We are interested in answering this question by making it possible to receive feedback from interactions with AI. Understanding the human message and emotion when approaching a machine is a valuable psychological experience and can tell us a lot about ourselves and our society. In collaboration with the Art Department, we are using AI methods to create a reaction to people’s interaction with machines.  The interaction received through sensory inputs is processed by the machine and the content of the interaction is decoded. Using deep learning models for natural language processing, the emotional state of the interaction is detected from the content. The detected state is used to visualize, in 2D or 3D, what the machine has perceived from the interaction. The final product will give the user a personalized interaction with the machine through a piece of art that reflects the user's emotion. This product can be combined with VR equipment and used for providing more realistic experience for game players, online training participants, or interaction with chat-bots.

Juneau: Managing and Guiding Data Science

Zachary Ives
Adani President's Distinguished Professor and Department Chair, Computer and Information Science Department
University of Pennsylvania

02/17/2021

How do we promote large-scale data science and data sharing, e.g., in the sciences or across organizations? Many modern data science applications have been leveraging data lakes: schema-agnostic repositories of data files and data products, which offer limited organization and management capabilities. There is a need to build a new generation of data science environments, which leverage data lakes so scientists and analysts can find tables, schemas, workflows, and datasets useful to their task at hand. Juneau incorporates search and management solutions into the Jupyter Notebook data science platform, to enable scientists to augment training data, find potential features to extract, clean data, and find joinable or linkable tables. Our core methods also generalize to other settings where computational tasks involve execution of programs or scripts.

How We Got Here: A brief history of the evolution of parallel processing in high-performance computing

David Barkai
HPC Consultant

02/24/2021

HPC underwent several dramatic changes in system architecture over the last 50 years. From the pre-70’s mainframe, to vector processors and multiprocessors of the 80s, followed by the emergence of the “killer micros” and shift to commodity processors and clusters. From shared memory to distributed memory systems, and the addition of accelerators (GPUs). This journey is accompanied by tracking the transition from a single thread program execution to ever increasing levels of parallelism, and the implications to the software tools and the application end user. HPC today is much more than the domain of numerical simulations. It includes data analytics and AI.

Addressing Climate Change through Drone Swarms

Emily Spahn
Software Engineer
DroneSeed

03/03/2021

Climate change is a major issue of concern worldwide. Trees are currently among the best ways to capture carbon. DroneSeed has been a leader in mass reforestation by drone, and is uniquely able to reforest after wildfires. We'll explore the evolution of technological needs to support this goal. Let's talk about how we went from the idea of combining biology with the emerging drone industry, to arrive at the realities of a startup putting seeds on the ground in post-wildfire environments.

Distributed Cache Invalidation at Scale

Greg Cooper
Software Engineer
Google

03/10/2021

Dr. Cooper will describe some of the challenges involved in building a large-scale distributed cache invalidation system and will present the design for one such system, called Thialfi, which was built and operated at Google for most of the past decade. He will also discuss the limitations of that design and touch on ways in which modern infrastructure allows improvements to it. The work is joint with Atul Adya, Phil Bogle, Dennis Geels, Brice Hulse, Larry Kai, Vishesh Khemani, Nick Kline, Colin Meek, Amanda Moreton, Daniel Myers, and Michael Piatek.

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