Profile

Cover photo
Siddhartha Gadgil
Works at Indian Institute of Science
Attended California Institute of Technology
Lives in Bangalore
945 followers|95,185 views
AboutPostsPhotosYouTube

Stream

Siddhartha Gadgil

Shared publicly  - 
 
As a feminist, I am dismayed that the Delhi High Court has allowed RK Pachauri, accused of molestation and harassment by several women at The Energy and Resources Institute (Teri), to visit all but two...
1
2
Alok Tiwari's profile photoE.K. Narayanan's profile photo
Add a comment...

Siddhartha Gadgil

Shared publicly  - 
 
(Photo: Jemal Countess/Getty) Here's a list of universities with arguably the greatest computer science programs: Carnegie Mellon, MIT, UC Berkeley, and Stanford. These are the same places, re
1
Athmanathan Senthilnathan's profile photoSiddhartha Gadgil's profile photo
2 comments
 
Much of creativity is combining ideas that are usually not together, or transplanting an idea to a different context. Thiscan certainly be attempted systematically, I.e., being constantly on the lookout for opportunities to do this and building the expertise in many areas.
Add a comment...

Siddhartha Gadgil

Shared publicly  - 
 
The Sports Gene by David Epstein
my review.
#SportsGene  

This is a brilliant book, concerning the nature vs nurture debate, or more accurately the "nurture only" vs "nature + nurture" question, in the context of sports. Unlike the case of two other recent books - Malcolm Gladwell's Outliers and Mathew Syed's Bounce (which are also very readable), the overwhelming conclusion is that high levels of skill are usually a combination of nature and nurture.  

This is neatly summarized in a chapter on `10,000 hours, give or take 10,000' - where the author looks at data from chess players from which the rule "that mastery comes from 10,000 hours of purposeful practice" was first advocated. While on an average it took these young players 10,000 hours, some needed a little over 2000 while others needed 10 times as much. And this  was from a pre-screened population.

The book is written in a spirit of enquiry (unlike Gladwell's and Syed's advocacy) and has many fascinating tales of the various aspects of nature and nurture that go into success (in sports), as well as surprising ways in which they interact. 

Somewhat surprisingly, the  conclusions from the role of talent (both genes and those environmental factors not in our control) is not fatalism but is both encouraging and practical. Firstly, as the chance that one has talent for some sport, or indeed some worthwhile activity in life, is naturally much higher that having talent for a specific sport, the obvious conclusion is to not overspecialize early, but try different things with an open mind to seek that for which you have a talent. I should add that fortunately many things like mathematics are naturally self-selecting - those without talent are unlikely to enjoy them (unless carried away by a romantic ideas of a field).  

Another positive and practical conclusion of the author, which as he points out Kenyan runners fortunately believe in, is that if you have a talent it is never too late to start - unlike the view from "nurture only", where one may conclude that it is too late to catch up on the nurture that others have.
1
Add a comment...

Siddhartha Gadgil

Shared publicly  - 
1
Add a comment...

Siddhartha Gadgil

Shared publicly  - 
 
Just trying to see if posting here is easier/harder than tweeting
1
Vishwesha Guttal's profile photoSiddhartha Gadgil's profile photoSampada Kolhatkar's profile photo
3 comments
 
Also I found it difficult to search History in Google+ I have no idea about twitter though.
But i thought sharing links was more easier on G+
Add a comment...
Have him in circles
945 people
julian gameplays's profile photo
Dmitry Korshunov's profile photo
Jeffrey Rolland's profile photo
Tim Riley's profile photo
Richar Benitez's profile photo
RiEKo IZaWa's profile photo
Dennis Santos's profile photo
kanish kumar's profile photo
John Redden's profile photo

Siddhartha Gadgil

Shared publicly  - 
 
4
1
Arun Kumar V's profile photo
Add a comment...

Siddhartha Gadgil

Shared publicly  - 
 
 
This is wonderful; neural network setup producing wonderful results; one example is training it on wikipedia and it ends up producing valid XML pseudo articles.  Another is training it on Linux kernel source, and it ends up producing C code that looks appealingly complex until you try and figure it out (even with bogus comments).
http://karpathy.github.io/2015/05/21/rnn-effectiveness/
7 comments on original post
2
3
Boris Borcic's profile photoArtur Popławski's profile photoJayant Vaidya's profile photoSampada Kolhatkar's profile photo
 
Recurrent neural networks are like parables.
Add a comment...

Siddhartha Gadgil

Misc. Dialog & Discussion  - 
 
Scala is magic: apply+unapply replaces case class

My code uses a case class modelling the property that a function is positive:

case class FuncPositive(func : RealFunc, domain: Interval) extends ConstantTyp with Func

I needed to generalise this to bounds on functions. The brilliant abstract pattern matching in scala lets me replace this by:

case class FuncBound(func: RealFunc, domain: Interval, bound: Real, sign: Sign) extends ConstantTyp with Func with Bound

and

  object FuncPositive{
    def apply(func : RealFunc, domain: Interval) : ConstantTyp with Func = FuncBound(func, domain, 0 : Real, -1 : Sign)
    
    def unapply(typ: Typ): Option[(RealFunc, Interval)] = typ match {
      case fb @ FuncBound(func, domain, 0, -1) => Some((func, domain))
      case _ => None
    }
  }
1
Add a comment...

Siddhartha Gadgil

Shared publicly  - 
 
This is pretty useful for interaction with students.
6
1
Abhishek Iyer's profile photo
Add a comment...

Siddhartha Gadgil

Shared publicly  - 
 
Very worrying. Would be more so if I was not on Linux.
Lenovo says that the Superfish adware it preinstalled on laptop computers isn't a security problem. That's not true. And guess what? It breaks Slack too.
3
Add a comment...
People
Have him in circles
945 people
julian gameplays's profile photo
Dmitry Korshunov's profile photo
Jeffrey Rolland's profile photo
Tim Riley's profile photo
Richar Benitez's profile photo
RiEKo IZaWa's profile photo
Dennis Santos's profile photo
kanish kumar's profile photo
John Redden's profile photo
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Bangalore
Links
Contributor to
Work
Occupation
Mathematics (Low-dimensional topology), but trying to make computers make my job obsolete.
Employment
  • Indian Institute of Science
    Professor, present
Education
  • California Institute of Technology
    Ph.D.(Mathematics)
Basic Information
Gender
Male