Cost function neural networks
This week is the last week of the Stanford Machine Learning course (ml-class.org), so here is my basic review of the course. Overall, the quality is quite good. The lectures are easily the most valuable part, as Andrew Ng is very organized and provides insightful explanations over the approaches and algorithms.
The homework problems use Octave, a mostly clone version of Matlab (including down to language spec), so it’s pretty easy to pick up for most math-inclined people.
The homework assignments themselves were mildly… disappointing? I’m not sure that’s the right word, but I feel they were really lacking in improving understanding of the primary concept at hand. At the start of the course, the homework assignments are concerned with implementing cost functions for linear regression and neural networks. At the end of the course, the homework assignments are concerned with implementing cost functions for k-means clustering – so it gets fairly repetitive, and doesn’t really make you aware of the steps involved with the different algorithms. Most of the supporting code that goes into the algorithms is written for you by the course team. Let’s take a look at what I mean.
In the following example, the course walks you through a collaborative filtering example to recommend movies that you might enjoy based on previous ratings. There are a number of steps that go into it:
Source: Brett Walenz
Brain Theory: Biological Basis and Computational Principles
eBooks (Elsevier Science)
You might also like:
Looking for investor, trader, big return2011-07-25 07:12:11 by Nathan_Belomy
Tons of experience, use level 2 software. Psychic and I read through BS well. Technical analysis, swing trading.
I also accurately predict all technology shifts, if anyone really wants to know a good investment.
$30,000 would be good. I'll make it more then worth your while. I can do 10% daily, easy 500% annually.
If you want to do $100,000 or more, no problem. I'll even do $1,000,000 if you'd like that. Going up to Millions of dollars, alright, if you really have that much cash to invest, I'd be happy to work it for you.
1982, year of the dog. Man's best friend.
Socialism as it was always meant to be2002-01-02 12:12:09 by justyouraveragecitizen
Socialism As It Was Always Meant To Be
by Michael Albert & Robin Hahnel
As the twentieth century draws to a close, what have we learned about how we should manage our economic affairs? What should we do if we had the opportunity to start again?
We could hold a lottery, or perhaps have a brawl to decide who owns what productive resources. The unfortunate losers would have to hire themselves out to work for the more fortunate winners, and the goods the losers produced could then be 'freely' exchanged by their owners -- the people who didn't produce them. Of course this is the capitalist 'solution' to the 'economic problem' which has been spreading its sway for roughly three centuries. Based on that experience we can predict, with great confidence, that private enterprise...
What about Participatory Economics?2002-01-02 12:03:20 by justyouraveragecitizen
According to most economists, the activities of separate groups of producers and consumers can be coordinated by markets or by authoritarian planningbut there is no 'third way.' Those who call for planning by producers and consumers themselves only delude themselves and others. Economic pundits claim it is impossible to democratically plan a complex modern economy. Alec Nove threw down the gauntlet in no uncertain terms in The Economics of Feasible Socialism (London: George Allen and Unwin, 1983):
I feel increasingly ill-disposed towards those who ... substitute for hard thinking an image of a world in which there would be no economic problems at all (or where any problems that might arise would be handled smoothly by the...
Good stock screening resources?2004-11-11 19:47:30 by daniel99
Hello everyone, I was hoping that someone could help me locate stock screening resources. Ideally, I would love to rent a Bloomberg or Factset terminal once a month for a few hours. I live in the Orange County area, so if anyone knows of a place that does this please let me know!
Alternatively, I would be interested in using some sort of robust stock screening software, but I think that a monthly recurring fee might not be the best way to go for me...I am not into technical analysis...so a solid tool for fundamental analysis would be great. I appreciate any help you can give!
Forex Trading Tips for Investors in the Global Currency Markets — MarketWatch
Learn more about forex trading with City Index Asia today. Trading CFD and FX on margin carries a high level of risk, that may not be suitable for some investors. Consider your investment objectives, level of experience, financial resources, …
Brain Machine Interfaces: Implications for science, clinical practice and society: 194 (Progress in Brain Research)
eBooks (Elsevier Science)