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Events for March 31, 2016
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Seminar-Algorithms for detecting atypical language use in autism spectrum disorders
Thu, Mar 31, 2016 @ 10:00 AM - 11:20 AM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Jan van Santen, Center for Spoken Language Understanding, Institute on Development and Disability, Oregon Health & Science University
Talk Title: Algorithms for detecting atypical language use in autism spectrum disorders
Abstract: The DSM-5 lists repetitiveness and impaired reciprocal social interaction as core symptoms of autism spectrum disorder (ASD), but does not list language impairment. Yet, language use is often atypical in ASD, being a natural modality for core symptoms to manifest. Standard language measures are not optimal for capturing these characteristics because they are too structured: Analysis of natural language samples is needed. However, such analysis is time consuming and inexact when conducted manually. Computational methods are needed.
We developed and applied algorithms to transcripts of Autism Diagnostic Observation Schedule (ADOS) sessions with children ages 4-8 with high-functioning ASD, Specific Language Impairment (SLI), or Typical Development (TD). The ASD group was divided into children with SLI (ALI) and without (ALN). Results showed ASD-specific atypicalities in verbatim and topical repetitiveness, discourse marker use, type of disfluencies, and other features of language use. These results attest to the feasibility of computing ASD-specific characteristics from natural language samples, tapping into multiple aspects of core ASD symptoms. Their usefulness is demonstrated by the intricate pattern of differences and similarities between the ASD and SLI groups and the ALI and ALN groups.
Biography: Jan van Santen obtained his PhD in Mathematical Psychology at the University of Michigan in 1979. He worked initially on visual perception and image processing at New York University and Bell Labs, and then switched to speech technology in 1985. He developed the prosody generation components of the Bell Labs text-to-speech system. In 2000 he became the Director of the Center for Spoken Language Understanding, now part of the Oregon Health & Science University. Here, he became one of the pioneers of a growing new field: the application of Natural Language Processing algorithms to neurological and neurodevelopmental disorders for diagnostics, remediation, and assistive communication, with special emphasis on autism spectrum disorders. In his spare time, he runs a startup, BioSpeech, that works on algorithms for processing biological sounds, including not only speech but also snoring and rodent calls.
He has written over 100 peer-reviewed papers, was an editor of Speech Communication and of the Journal of Mathematical Psychology, was the editor of a book, Progress in Speech Synthesis, and has seven patents.
Host: Shrikanth Narayanan & Daniel Bone
Location: Ronald Tutor Hall of Engineering (RTH) - 211
Audiences: Everyone Is Invited
Contact: Tanya Acevedo-Lam/EE-Systems
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Cyber-Physical System Design Using Contracts
Thu, Mar 31, 2016 @ 10:00 AM - 11:30 AM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Dr. Pierluigi Nuzzo, University of California, Berkeley
Talk Title: Cyber-Physical System Design Using Contracts
Abstract: The realization of complex cyber-physical systems is creating design and verification challenges that will soon become insurmountable with today's engineering practices. While model-based design tools are already facilitating several design tasks, harnessing the complexity of the Internet-of-Things scenario is only deemed possible within a unifying methodology. This methodology should help interconnect different tools, possibly operating on different system representations, to enable scalable design space exploration and early detection of requirement inconsistencies.
In this talk, I show how a contract-based approach provides a formal foundation for a compositional and hierarchical methodology for cyber-physical system design, which can address the above challenges, and encompass both horizontal and vertical integration steps. I use assume guarantee contracts and their algebra (e.g. composition, conjunction, and refinement) to support the entire design process and enable concurrent development of system architectures and control algorithms. In the methodology, the design is carried out as a sequence of refinement steps from a high-level specification to an implementation built out of a library of components at the lower level. Top-level system requirements are represented as contracts, by leveraging a set of formal languages, including mixed integer-linear constraints and temporal logic. Contracts are then refined by combining synthesis and optimization-based methods. I propose a set of optimization-based algorithms for efficient selection of cost-effective architectures under safety, reliability, and performance constraints over a large, mixed discrete-continuous design space. I demonstrate the effectiveness of the approach on industrial design examples, including aircraft electric power distribution and environmental control systems, showing, for instance, that optimal selection of industrial-scale power system architectures can be performed in a few minutes. Finally, I conclude by presenting future research directions towards a full-fledged integrated framework for system design.
Biography: Pierluigi Nuzzo is a Postdoctoral Scholar at the Department of Electrical Engineering and Computer Sciences of the University of California, Berkeley. He received the Ph.D. in Electrical Engineering and Computer Sciences from the University of California at Berkeley in 2015. He also holds the Laurea (M.Sc.) degree in Electrical Engineering (summa cum laude) from the University of Pisa and the Sant'Anna School of Advanced Studies, Pisa, Italy. Before joining U.C. Berkeley, he was a Researcher at IMEC, Leuven, Belgium, and the University of Pisa, working on the design of energy-efficient A/D converters, frequency synthesizers for reconfigurable radio, and design methodologies for mixed-signal integrated circuits. His research interests include: methodologies and tools for cyber-physical system and mixed-signal system design; contracts, interfaces, and compositional methods for embedded system design; energy-efficient analog and mixed-signal circuit design. Pierluigi received First Place in the operational category and Best Overall Submission in the 2006 DAC/ISSCC Design Competition, a Marie Curie Fellowship from the European Union in 2006, the University of California at Berkeley EECS departmental fellowship in 2008, the U.C. Berkeley Outstanding Graduate Student Instructor Award in 2013, and the IBM Ph.D. Fellowship in 2012 and 2014.
Host: Dr. Massoud Pedram
Location: 248
Audiences: Everyone Is Invited
Contact: Suzanne Wong
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Ming Hsieh Department of Electrical Engineering Annual Pie and Burger Day
Thu, Mar 31, 2016 @ 11:30 AM - 01:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Receptions & Special Events
Electrical Engineering Students, Staff, and Faculty join us for our annual Pie and Burger Day! Must have the EE Sticker on your ID to attend. Inquire at EEB 102.
More Information: 20161 Student Event (Pie 'n Burger) flyer.pdf
Location: Hughes Aircraft Electrical Engineering Center (EEB) - Courtyard
Audiences: EE Students, Faculty, & Staff
Contact: Gloria Halfacre
