[Lisa_teatalk] [teatalk-orgs] [Tea Talk] Dhruva Raman (Cambridge) Fri 19 April 2019 10h30 Mila Auditorium

saikrishna gottipati saikrishnagv1996 at gmail.com
Fri Apr 19 09:25:27 EDT 2019


Gentle reminder, this talk is today at 10.30am

Cheers
The tea talk team

On Mon, 15 Apr 2019, 10:08 saikrishna gottipati, <saikrishnagv1996 at gmail.com>
wrote:

> This week we have *Dhruva Raman* from *Univ of Cambridge *giving a talk
> on  *Fundamental Bounds on Learning Performance in Neural Circuits *at
> *10h30* on *19th April* in *Mila Auditorium*.
>
> If you are interested in* meeting Dhruva*, please book a slot in this google
> sheet
> <https://docs.google.com/spreadsheets/d/13k6e1rCDM1tD__MvxS-UDHMS9L6XsWcTvqs_atbmNRY/edit?usp=sharing>
>
> See you there!
> The Tea Talk Team
>
> *TITLE*  Fundamental Bounds on Learning Performance in Neural Circuits
>
> *ABSTRACT*
> Biological neural circuits learn in spite of imperfect information on task
> performance and noisy biological components. How can these problems be
> mitigated? We use optimization theory to show how adding apparently
> redundant neurons and connections to a network can improve learning
> performance in the face of imperfect learning rules and corrupted error
> signals. The theory shows how large neural circuits can exploit additional
> connectivity to achieve faster and more precise learning. However, there is
> a limit to the benefit of adding connections. Biologically, synapses
> (connections strengths) are intrinsically unreliable. We show that
> excessive network size eventually outcompetes the benefits to learning
> performance. Consequently, there is an optimal size of network for a given
> task, which we can calculate in specific cases.
>
> *BIO*
> Dhruva did his undergraduate (MMath) at the University of Warwick
> (2008-2012), spent a year at the systems biology doctoral training centre
> at the University of Oxford (2012-2013), and did his PhD in the Control
> Group at the University of Oxford under the supervision of Antonis
> Papachristodoulou (2013-2016). Since 2017 he has been a postdoc in the
> control group at the University of Cambridge under the supervision of
> Timothy O’Leary.
>
>
>
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