Cross validation neural networks MATLAB

Cross Validation and Split- Sample Method
by cross-validated NNs and According to the Neural Net Usenet -
FAQs : What are cross-validation and bootstrapping?
Cross Validation
In k-fold cross-validation, you divide the data into k subsets of
(approximately) equal size. You train the net k times, each time leaving out one of the subsets from training, but using only the omitted subset to compute whatever error criterion interests you.
If k equals the sample size, this is called "leave-one-out" cross-validation. "Leave-v-out" is a more elaborate and expensive version of cross-validation that involves
leaving out all possible subsets of v cases.
Split Sample or Hold Out
cross-validation is quite different from the "split-sample" or "hold-out" method that is commonly used for early stopping in NNs. In the split-sample method, only a single subset (the validation set) is used to estimate the generalization error, instead of k different subsets; i.e., there is no "crossing".
While various people have suggested that cross-validation be applied to early stopping, the proper way of doing so is not obvious.
The rest of the document is interesting - it defines and discusses Jackknifing and Bootstrapping.
MATLAB neural network manual does not use either terms (as far as I can see,

Source: tumbling ideas

WallMonkeys.com Bombay Stock Exchange, Bombay, Mumbai - 24"W x 19"H - Peel and Stick Wall Decal by Wallmonkeys
Home (WallMonkeys.com)
  • ALL orders CUSTOM printed. When you place an order, the image is made in the USA, just for you!
  • Printed on WHITE, premium, self-adhesive, re-positionable fabric paper.
  • No nails, frames or glue. No professional installation required.
  • Simply peel and stick! Easy to remove and re-apply.
  • BE SURE you ordered the right size for your intended use!!

You might also like:

RapidMiner 5 Tutorial - Video 9 - Model Peformance And Cross-Validation
RapidMiner 5 Tutorial - Video 9 - Model Peformance And Cross-Validation

The Nonsense Mantras of Our Time

2001-12-16 10:02:31 by justyouraveragecitizen

The Nonsense Mantras of Our Times
By Ilija Trojanow and Ranjit Hoskote
What's the world like?
A flock of sheep.
One falls into the ditch,
the rest jump in.
Kabir
(Sakhi: 240, The Bijak of Kabir, trans. Linda Hess and Shukdev Singh)
On TV screens across the globe, for more than two months now, the sheep have been jumping into the ditch without a bleat of protest. What's worse, they believe that's the way to go, the way of justice and salvation. Kabir's acerbic stanza accurately describes the debate in the mainstream media following the events of September 11. Legions of experts and viewers have committed themselves to an absurdly simplistic and Manichean account of the world, in which President Bush and his cast of international supporters...

Emerging country stock markets boom

2003-11-16 10:13:22 by Mozi

The Standard & Poor's 500-stock index is up 19.1% this year. Not bad. But that's chump change compared with the Bovespa, the index for the São Paulo exchange in Brazil. The gains there? A shade under 100%, when translated into dollars. If you want something a little more sedate, try the Bangkok set index. It's up a mere 89%...
Emerging markets are hot, hot, hot. Hotels in Bombay and Bangalore are booked solid as investors fly in, looking for the next Infosys Technologies Ltd. (INFY ), the original India software star. Fund managers are poring over the books of Argentine steelmakers, Indonesian cigarette sellers, Polish juice peddlers. Their message: These equity and bond markets still have a long way to go. Not even the Oct. 27 plunge in Russian equities over the Yukos affair has...

Chris Hitchens: Our Friends in Bombay

2008-12-03 11:17:19 by pissed-republican

We must stand by our most important ally.
By Christopher Hitchens
Posted Monday, Dec. 1, 2008, at 11:15 AM ET
A vigil near the Oberoi Hotel in MumbaiIt's in human nature to mention any personal connection when offering solidarity, so I shall just briefly say that on my first visit to India, in 1980, I stayed at the Taj Mahal in Bombay, visited the "Gateway of India" and took a boat to Elephanta Island, toured the magnificent railway station, had my first diwali festival at Juhu beach, and paced the amazing corniche that was still known by some—after its dazzling string of lights—as "Queen Victoria's necklace." Wonderful though some of the 19th-century British architecture can be, Bombay is quintessentially an Indian achievement, and an achievement of all its peoples...

Russia's Stock Market in Comparative Perspective  — Forbes
First let's look at the MICEX versus the Johannesburg Stock Exchange (JSE) of South Africa, the Bombay Stock Exchange (BSE SENSEX) of India, and the Shanghai Stock Exchange (SSE) of China0. Among this group the MICEX is hardly a rockstar, …

Bombay Stock Exchange staff to teach National University of Advanced Legal …  — Times of India
KOCHI: National University of Advanced Legal Studies (NUALS) is in the process of signing an agreement with the Bombay Stock Exchange (BSE) to launch short-term diploma programme in public finance and legal aspects from this academic year.

Codedownloads.com Stock Market Watch
Mobile Application (Codedownloads.com)
  • Stay up to date on the Indian stock market
  • BSE SENSEX updates
  • Quotes of shares and stock market news

Arab QFIs first to enter India via new window  — mydigitalfc.com

... and senior officials from National Stock Exchange (NSE) and Bombay Stock Exchange (BSE) began the road show in the Gulf on Sunday in Saudi Arabia to woo Arab and expatriate investors in the region into Indian market through the QFI route.

LAP LAMBERT Academic Publishing Trading Activity in the Indian Stock Markets: A Historical Comparison of the Bombay Stock Exchange and the National Stock Exchange
Book (LAP LAMBERT Academic Publishing)
LAP LAMBERT Academic Publishing Performance of Public Sector Enterprises in the stock market: Quoted in Bombay Stock Exchange, India during the period of 1993-94 to 2004-05
Book (LAP LAMBERT Academic Publishing)

Cruel joke of defunct stock exchanges to end  — Business Standard
However, when the National Stock Exchange (NSE) was introduced in 1993, and more so, after the Bombay Stock Exchange (BSE) went national with the introduction of electronic trading around 1996, the regional stock exchanges lost a statutory reason to …


Related posts:

  1. Cross validation neural networks
  2. Multilayer Neural Networks MATLAB
  3. Activation Neural Networks
  4. Face Recognition Neural Networks MATLAB
  5. Counterpropagation Neural Networks in MATLAB