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Ask HN: What are you working on (hacking)?

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Re: Ask HN: What are you working on (hacking)?

#171

Post by vosper »

mian2zi3 wrote: post #65
vosper wrote: post #11

My ongoing quest to make money predicting horse races. So far I've not made a dime, and don't really expect to, but the faint hope of future monetary rewards keeps me going. The real payoff has been that in the process I've learned all sorts of things: about Python, data mining, working with large datasets, machine learning...

I met a guy (I can give more details offline) who worked for an international gambling syndicate based in HK. Software written by teams in Shenzhen running on servers in HK fed by data from handicappers in Australia directed bettors to place bets at tracks all over the world. They were making something like 15-20% returns. As you can imagine, he had some crazy stories. At the time I was thinking about something simil…

I'd love to hear more about this, what's the HN-sanctioned way to do PMs or non-public messaging? Throwaway email?

Re: Ask HN: What are you working on (hacking)?

#173

Post by user24 »

vosper wrote: post #170
noizd wrote: post #63

Earlier quoted context omitted.

Genetic algorithms can be used to determine the (close to) best combination of features from all the features you have access to.

I don't have a problem so much with having myriad statistics and picking the right ones, but not knowing which stats to generate in the first place from my database of results. For example, I assume that a dogs past performance must be some indicator of its chances in the next race, but how do I account for the chances of dogs who didn't complete their last race? What weighting is the last race worth, compared to the…

"software that knew how to apply a selection of mathematical functions to my data, and then breed the results like a GA"

yeah, I'd envisaged using the accuracy of the neural net as the fitness function for a GA that mutates input parameters. It's another layer of complexity, and I've no clue how you'd start, but it seems like it would work.

In other words - use a GA to select features, using how well the NN trained on that set of features performs as the fitness function.

Re: Ask HN: What are you working on (hacking)?

#174

Post by user24 »

photon_off wrote: post #166
dannyr wrote: post #93

I'm working on a new version of my app, http://www.launchset.com . It is actually inspired by HackerNews particularly threads like this and 'Review my app/startup'. I have several HN guys on the site. If you are interested in being one of the early users, email me at hackernews -at- launchset.com.

What does it do?

seems to be something like twitter for projects, but it's giving me errors for a lot of things.

Re: Ask HN: What are you working on (hacking)?

#176

Post by arthurdent »

iworkforthem wrote: post #161

I am working on a few finance/trading gigs; - something similar to timothy sykes' timalerts, with iphone/androoid email/sms option. much coding need to get data out to these platform. - my trading algorithm for forex and stock. working to translate all these algorithms to codes.

i've been working on trading algos for stock. interested in collaborating?

Re: Ask HN: What are you working on (hacking)?

#177

Post by al1 »

I'm working on Plexibase, a database platform that makes it easy to create a knowledge base. Please try it out at http://plexibase.com. It's a work in progress; I welcome your thoughts. Smaller companies could use this to make data available to customers quickly without having to develop a web application or CMS.

Re: Ask HN: What are you working on (hacking)?

#178

Post by sendos »

photon_off wrote: post #165
sendos wrote: post #86

http://soundkey.com : Will ideally become something like the Wikipedia of sounds (i.e. a central repository/global reference about anything that has to do with sounds)

Really cool idea. I have some feedback after visiting your site. "wikipedia of sounds" is not at all how I would describe it. It's more like "twitter for sounds". When I arrived at your site I was really quite confused as to what the hell soundkey did. The main part of the site shows a big list of social networks, and says "use soundkey here" ... Ok... but what exactly does soundkey do? I would focus more on the aspe…

Thanks for the feedback!

We are currently working with a UX expert to help us re-design the look & feel and the functionality of the website, and the issues you bring up have been brought to our attention and will be addressed in the next iteration of the website.

(We currently do have a "How this Works" section on the front page that says "Record Sound, Get SoundKey, Use Anywhere" with an explanation of what that means, but I guess it's not clear enough because lots of people complain about it. Hopefully the updated website will make things much more clear in much less time)

Re: Ask HN: What are you working on (hacking)?

#180

Post by dannyr »

usaar333 wrote: post #160
dannyr wrote: post #94

Earlier quoted context omitted.

njl, I hear people asking for a Django-equivalent of Heroku. You definitely have a market for this.

What were there opinions of AppEngine? (the closest thing there is currently)

AppEngine supports Django but just partially. You cannot use the ORM & also very few Django apps/plugins would work.
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