Lab meeting schedule

Instructions

Lab meetings are fridays at 10:30am in 508-20 Evans. 1/2 hour 'business' stuff followed by a scientific presentation.

You're welcome to switch dates individually, but talk to the one you're switching with.

--Daniel Little

Lab meeting schedule

4/26 - Mayur Mudigonda

5/3 - Harel Shouval

5/10 - Watson (Crutchfield Lab @ UC Davis)

5/17 - Evan Lyall

5/24 - Sarah Marzen

5/31 - Cancelled- Simons Institute Kickoff Meeting

6/7 - Joint Lab Meeting Surya Ganguli Lab

6/14 - Ross Gayler

6/21 - Georgios ICML talk

6/28 - PhD Candidate from Allen Institute

7/5 - No Meeting (4th July Holiday)

7/12 - Georgios

7/19 - No Meeting (CRCNS Course)

8/2 - No Meeting (CRCNS Course)

8/9 - Mike Schachter

8/16 - Guy Isley

8/23 - Chris Warner

8/30 - Ian Stevenson

9/6 - Tony Bell

9/13 - Mike Deweese

9/20 - Tyler Lee

9/27 - Joe (in Deweese Lab)

10/4 - Fritz Sommer

10/11 - Chris Hillar

10/18 - Mayur Mudigonda

10/25 - Bruno Olshaussen

11/1 - Urs Koster

11/8 - Gautam Agrawal

11/15 - Pentti Kanerva

Lab meeting list

6/12

• Speaker: Jack
• Title/astract:

6/19

• Speaker: Paul
• Title/astract:

6/26

• Speaker: Kilian
• Title/astract:

Previous Lab meetings

2012-2013

8/17 - Daniel Little

8/24 - Chris Hillar

8/31 - Ian Stevenson

9/7 - John Collins

9/14 - Fritz Sommer

9/21 - Tyler Lee

9/28 - Bruno Olshausen

10/5 - Mike Deweese

10/12 - SFN

10/19 - Gert Van Dijck

10/26 - Guy Isley --> Chris/Mayur

11/2 - Gautam Agarwal

11/9 - John Schulman (Bruno)

11/16 - Eric Weiss

11/23 - (thanksgiving)

11/30 - Yan Karklin (Tyler)

12/7 - (NIPS)

12/14 - Daniel Little (exit talk)

12/21 - (open if enough people around)

1/4 - Mike Schachter

1/11 - SKIPPED

1/18 - Sarah Marzen

1/25 - Guy Isely

2/1 - Mika Laiho

2/8 - Kevin

2/15 - Chris Warner

2/22 - Ian Stevenson

3/1 - COSYNE

3/8 - Cosyne summary

3/15 - Alan Yuille

3/22 - Chris Hillar

3/29 - holiday

4/5 - Tyler Lee

4/12 - Gautam Agarwal

4/19 - Bruno

2009

1/9

• Speaker: Will
• Title/abstract:

1/16

• Speaker: Jack
• Title/abstract:

1/23

• Speaker: Paul
• Title/abstract:

1/30

• Speaker: Kilian
• Title/abstract: Quaternionic Representations for 2D signals

2/6

• Speaker: Daniel
• Title/abstract:

2/13

• Speaker: Jimmy / Jascha
• Title/abstract: Learning Lie Group operators from Natural Movie

2/20

• Speaker: Badr
• Title/abstract:

2/27 COSYNE, no meeting

3/6

• Speaker: Vivienne
• Title/astract: AIM vs. JAS / I'll be multitasking by discussing the results of a sparse coding analysis of the Auditory Image Model. This is work with Fritz and Martin, so hopefully will be there sparing me another meeting afterwards. Depending on the available time I will also solicit feedback on an alternate approach to sounds representation. Individual sounds streams are modeled as successive and overlapping, amplitude and frequency modulated sound "textures".

3/13

• Speaker: Tony
• Title/astract:

3/20

• Speaker: Tony
• Title/astract:

3/27

• Speaker: Jascha and Peter
• Title/astract:

4/3

• Speaker: Chris
• Title/astract:

4/10

• Speaker: Fritz
• Title/astract:

4/17

• Speaker: Pierre
• Title/astract:

4/24

• Speaker: Pentti
• Title/astract:

5/1

• Speaker: Jeff
• Title/astract:

5/8

• Speaker: Nicol
• Title/astract:CANCELED

5/15

• Speaker: Martin
• Title/astract:

5/22

• Speaker: Charles
• Title/astract:

5/29

• Speaker: Thomas
• Title/astract:

6/5

• Speaker: Will
• Title/astract:CANCELED

2008

january 4

• Speaker: no meeting
• Title/abstract:

january 11

• Speaker: Vivienne
• Title: A theoretical model of specific language impairment
• Abstract: Some form of developmental speech or language disorders affecting as many as 5-10% of all children (Leonard, 1998). While many disorders have been associated with specific problems in cognitive or linguistic development, specific language impairment (SLI) describes children with significantly delayed acquisition of language without evidence of brain damage, impaired hearing or vision, schizophrenia, autism or other neurological disorders (Tallal, 2004). As such, children with SLI show extreme difficulty in early language acquisition while other cognitive abilities appear to fall within the population norm. In many earlier theories of SLI, high-level, language-specific deficits were often hypothesized as the underlying cause of the delayed learning; however, findings over the last decade suggest that a more generic auditory deficit underlies the degraded phonological processing associated with SLI children (Leonard, 1998; Tallal et al., 1993, 1996, 1998; Wright et al.., 2000). Much of this literature indicates that impaired perception and discrimination of rapidly changing components of both speech and nonspeech stimuli undermines development of normal language abilities (Godfrey et al., 1981; Kraus et al.., 1996; McAnally & Stein, 1997; Nagarajan et al., 1999; Reed, 1989; Snowling et al.., 1986; Stark & Heinz, 1996a, 1996b; Werker & Tees, 1987; Wright et al., 2000; Goswami et al., 2002, Gaad et al., 2006), although some findings have questioned these findings (Heath & Hogben, 2004; White, Milne, et al., 2006; White, Frith, et al., 2006). Even within this body of research, there exist differing theories about the nature of the underlying deficit. Some groups have agued that deficits in rapid auditory processing (RAP) leads to impairment in the ability to perceive sounds characterized by brief or rapidly changing temporal cues, fundamental to speech perception (Fitch, et al., 1997; Benasich et al., 2002; Tallal et al., 2004), while an alternate hypothesis proposes that SLI develops due to a deficit in the perception of rhythmic timing (Goswami, 2002), which might subserve speech segmentation during language development. Neuroanatomical research suggests that deficits associated with SLI may well emerge in relatively low-level, subcortical auditory processing (Benasich et al., 2002). Here we propose a simple model of low-level auditory processing capable of explaining some of the specific deficits identified in SLI populations associated with both RAP and rhythmic perception. In this “spike coding” model (Smith & Lewicki, 2005 & 2006) sounds are decomposed into a highly sparse set of “spikes” representing the occurrence of acoustic events selected from a dictionary of learned acoustic features (kernel functions). Importantly, by optimizing these acoustic features to efficiently encode natural sounds the resulting code partitions time-frequency space in an identical fashion to the mammalian cochlear code (Smith & Lewicki, 2006). This model predicts that the peripheral auditory code should contain a diverse set of coding units, with some devoted to accurately tracking acoustic transients while others are devoted to tight frequency resolution. The research proposed here uses a combination of behavioral experiments and computation modeling to test whether deficits in RAP and rhythmic perception both emerge in this model from a disruption of the units responsible for tracking acoustic transients.

january 18

• Speaker: Chris
• Title/abstract:

january 25

• Speaker: Tony
• Title/abstract:

february 1

• Speaker: Gianluca
• Title/abstract:

february 8

• Speaker: David Pfau
• Title/abstract:

february 15

• Speaker: Thomas
• Title/abstract:

february 22

• Speaker: Jack
• Title/abstract:

february 29

• Speaker: No meeting, COSYNE
• Title/abstract:

3/7

• Speaker: Paul Ivanov (slides)
• Title/abstract: I'll cover the Kozachenko and Leonenko binless entropy estimation method for which I'm in the process of building a toolbox.

I don't have any exciting new results yet, but I want to be prepared to explain the method for when the excitement does start.

Depending on how long the above stretches out to, I'll also give an introduction to CUDA - nVidia's general purpose GPU API to start planting seeds inside your heads for the types of applications that could be sped up using graphics cards.

3/14

• Speaker: Kilian
• Title/abstract:

3/21

• Speaker: Chetan
• Title/abstract:

3/28

• Speaker: no meeting
• Title/abstract:

4/4

• Speaker: Jimmy
• Title/abstract:

4/11

• Speaker: Bruno
• Title/abstract:

4/18

• Speaker: Amir
• Title/abstract:

4/25

• Speaker: Fritz
• Title/abstract:

5/2

• Speaker: Pierre
• Title/abstract:

5/9

• Speaker: Tim
• Title/abstract:

5/16

• Speaker: Chris
• Title/abstract:

5/23

• Speaker: David Zipser
• Title/abstract:

5/30

• Speaker: Greg Simpson
• Title/abstract:

6/6

• Speaker: Will
• Title/abstract:

6/13

• Speaker: George Oster
• Title/abstract: The neural origins of sea shell patterns

6/20

• Speaker: Jascha
• Title/abstract:

6/27

• Speaker: Chris Fiorillo, Stanford
• Title/abstract: A SINGLE NEURON THEORY OF NEURAL COMPUTATION

7/4

• Speaker:
• Title/abstract:

7/11

• Speaker: Charles
• Title/abstract:

7/18

• Speaker: Mike
• Title/abstract:

7/25

• Speaker: Vivienne
• Title/abstract:

8/1

• Speaker: Gianluca
• Title/abstract:

8/8

• Speaker: Thomas
• Title/abstract:

8/15

• Speaker: Paul (slides)
• Title/abstract:Nearest Neighbor search using CUDA: or how I learned to start worrying and fear the float.

I'll talk about what kinds of computations can benefit from being offloaded to graphics cards, as well as some interesting limitations of using floating points that came to light and have been keeping me up at night ever since.

8/22

• Speaker: Gianluca
• Title/abstract: Python tools for brain-inspired sound analysis.

8/29

• Speaker: Amir
• Title/abstract:

9/5

• Speaker: Bruno
• Title/abstract:

9/12

• Speaker: Badr (Mike DeWeese)
• Title/abstract:

9/19

• Speaker: Peter (DeWeese lab)
• Title/abstract:

9/26

• Speaker: Pierre
• Title/abstract:

10/3

• Speaker: Jimmy
• Title/abstract:

10/10

• Speaker: Rich
• Title/abstract:

10/17

• Speaker: Paul (slides) (sub'd for Fritz)
• Title/abstract: Electoral reform, clustering, and vector quantization. I'll cover instant run-off voting, and it's multi-seat cousin ranked choice voting, and how we can should be able to apply it to some of the problems that we have.

10/24

• Speaker: Jeff
• Title/abstract:

10/31

• Speaker: Nicol
• Title/abstract:

11/7

• Speaker: Jascha
• Title/abstract:

11/14

• Speaker: Charles
• Title/abstract:

11/21

• Speaker: Alex
• Title/abstract:

11/28

• Speaker: Thanksgiving
• Title/abstract:

12/5

• Speaker: Thomas
• Title/abstract:

12/12

• Speaker: Amir
• Title/abstract:

12/19

• Speaker: Mike
• Title/abstract:

2007

January 5

• Speaker: Jack
• Title/abstract:

january 12

• Speaker: Jascha
• Title/abstract:

january 19

• Speaker: Scott Makeig
• Title/abstract:

january 26

• Walter Freeman symposium (no meeting)

february 2

• Speaker: Charles
• Title/abstract:

february 9

• Speaker: Frank Wood (Grad student in Michael Black's group)
• Title/abstract:

february 16

• Speaker: Cosyne practice talks and posters
• Title/abstract:

february 22 - february 27

• COSYNE

march 2

• Speaker: Alexis Guanella, ETH/INI Zurich
• Title/abstract: Grid cells

march 9

• Speaker: Jeffrey Ng (visitor)
• Title/abstract:

march 16

• Speaker: Jimmy
• Title/abstract:

march 23

• Speaker: Tony
• Learning in the Kinetic Automaton

march 30

• Speaker: spring break
• Title/abstract:

april 6

• Speaker: Martin Rehn
• Title/abstract:

april 13

• Speaker: Charles
• Title/abstract:

april 20

• Speaker: Alexander Schmolck
• Title/abstract:

april 27

• Speaker: Jascha
• Title/abstract:

may 4

• Speaker: Bruno
• Title/abstract:

may 11

• Speaker: Jimmy
• Title/abstract:

may 18

• Speaker: Thomas
• Title/abstract:

may 25

• Speaker: Evan
• Title/abstract: Auditory Scene Analysis / I'll give a quick tour of a few projects geared towards developing a large-scale model of auditory scene processing.

june 1

• Speaker: Tim
• Title/abstract: Saccades, spike timing and large scale cortical dynamics / project update.

june 8

• Speaker: cancelled
• Title/abstract:

june 15

• Speaker: Amir
• Title/abstract:

june 22

• Speaker: Pierre
• Title/abstract:

june 29

• Speaker: Mike
• Title/abstract:

july 6

• Speaker: cancelled
• Title/abstract:

july 13

• Speaker: no meeting
• Title/abstract:

july 20

• Speaker: Thomas
• Title/abstract: fMRI analysis

july 27

• Speaker: Jimmy
• Title/abstract: Learning overcomplete subspace structures on natural speech signal

august 3

• Speaker: Kilian
• Title/abstract:

august 10

• Speaker: no meeting
• Title/abstract:

august 17

• Speaker: Chetan
• Title/abstract:

august 24

• Speaker: Russ Webb
• Title/abstract:

august 31

• Speaker: Charles
• Title/abstract:

september 7

• Speaker: Bruno
• Title/abstract:

sept 14

• Speaker: Amir (granlibakken starts in the evening)
• Title/abstract:

sept 21

• Speaker: Chris
• Title/abstract:

sept 28

• Speaker: Chetan
• Title/abstract: Psychophysics of Object Recognition

oct 5

• Speaker: Fritz
• Title/abstract:

oct 12

• Speaker: Pierre
• Title/abstract:

oct 19

• Speaker: Mike D
• Title/abstract:

oct 26

• Speaker: sfn poster preview
• Title/abstract:

nov 2

• Speaker: sfn panic - last practice talks, posters should be printed...
• Title/abstract:

nov 9

• Speaker: SFN nobody is back yet.
• Title/abstract:

nov 16

• Speaker: SFN summary
• Title/abstract:

nov 23

• Speaker: thanksgiving
• Title/abstract:

nov 30

• Speaker: Jascha
• Title/abstract:

december 7

• Speaker: no meeting, NIPS
• Title/abstract:

december 14

• Speaker: Dan Feldman
• Title/abstract:

december 21

• Speaker: no meeting
• Title/abstract:

2006

April 21

• Speaker: Fritz
• Title/abstract: Endophysics

April 28

• Speaker: Tony
• Title/abstract: ICA, ISA, IVA and all that (slides)

May 5

• Speaker: Kilian/Tony/Fritz
• Title/abstract: FQXI proposal link

May 12

• Speaker: Bruno
• Title/abstract:

May 19

• Speaker: Jimmy Wang
• Title/abstract: Non-negative Matrix Factorization and Sparse Coding

May 26

• Speaker: Pierre
• Title/abstract: Qualifying exams practice talk

June 2

• Speaker: Tim
• Title/abstract: Polytrodes : large scale neuronal recording.

June 9

• Speaker: Kilian+Charles
• Title/abstract: Generalizing the Hilbert Transformation to 2D -- The Monogenic Signal

June 16

• Speaker: Thomas
• Title/abstract: Preliminary stuff on coherence analysis of sustained attention fMRI experiments.

June 23

• Speaker: Rich Baraniuk
• Title/abstract: Compressed Sensing

June 30

• Speaker: Kilian
• Title/abstract:

July 7

• Speaker: Tony
• Title/abstract:

July 14

• Speaker: Bruno
• Title/abstract:

July 21

• Speaker: Jimmy
• Title/abstract: Signal processing using Chromatic Derivatives

July 28

• Speaker: Pierre
• Title/abstract: Hierarchical Sparse Bayesian Learning

August 4

• Speaker: Fritz (Jimmy)
• Title/abstract: Kingsbury/complex wavelets

August 11

• Speaker: Jack
• Title/abstract: Bilinear models

August 18

• Speaker: Tim
• Title/abstract: How sparse is the cortex?

August 25

• Speaker: Amir
• Title/abstract: Receptive fields

September 1

• Speaker: Tony
• Title/abstract:

September 8

• Speaker: Jascha
• Title/abstract:

September 15

• Speaker: Bin Yu
• Title/abstract:

September 22

• Speaker: Charles
• Title/abstract:

September 29

• Speaker: Pierre
• Title/abstract:

October 6

• Speaker: Kilian
• Title/abstract:

October 13

• Speaker: Horace Barlow
• Title/abstract: Glass patterns

October 20

• Speaker: Evan
• Title/abstract: Coincidences and curious complexity

Is there a relationship between noticing a coincidence in a higher-level cognition sense, such as detecting "non-random" patterns in a series of coin flips, and experience-dependent changes in "attentional" preferences, such as developmental changes in looking times? Perhpas not but I'll spin a yarn in any case. I'll start with a review of Griffiths & Tenebaum (in press), "From mere coincidence to meaningful discoveries" (link here: http://cocosci.berkeley.edu/tom/papers/coincidences.pdf). Then I follow with some ill formed ideas of my own.

October 27

• Speaker: Bruno -> Tim
• Title/abstract: SFN poster on sparseness in neural recordings

November 3

• Speaker: Fritz
• Title/abstract:

November 10

• Speaker: Jimmy
• Title/abstract:

November 17

• Speaker: Thomas
• Title/abstract: Functional cortical networks during sustained visuospatial attention. (fMRI data stuff).

November 24

• Speaker: thanksgiving, no meeting

December 1

• Speaker: Tony
• Title/abstract:

December 8

• Speaker: Bruno
• Title/abstract:

December 15

• Speaker: Amir
• Title/abstract: Will have guest speaker, head of SETI@home and BOINC projects.

December 22, 29

• Speaker: holidays, no meetings