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Propose HN: Screenshot Saturday

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Re: Propose HN: Screenshot Saturday

#151
post #58

Earlier quoted context omitted.

Thanks! It's written in C#, we use Xamarin to target both iOS and Android. We also have a PC version running on standard MS.NET I'm not familiar with Harmattan.

That's really cool! I didn't expect that you could use Xamarin for such games. Are you by any chance planning a Windows/Windows Phone release?

We were on Windows Phone but stopped maintaining the app a year ago because XNA was dropped by Microsoft.

Re: Propose HN: Screenshot Saturday

#152

http://imgur.com/AM11LCz Working on my website for my wedding. Using it as an opportunity to teach myself Django, so that I can make mistakes here before I start using it for a work project. Right now, I'm working on adding the ability to RSVP for events. It's been really great to learn how to use Docker, Redis, Postgres, etc. to make this come together. Overkill likely, but still fun. :-)

Looks great, one tip is that its nuptials not nuptuals. Congrats!

Re: Propose HN: Screenshot Saturday

#153
post #72

Awesome idea. This week as been all about getting a second version stamped and out (nowhere near a finished version or even 1.0, but a 0.2 version) I've been working on https://ghostream.com a framework for constructing stream processing systems. Getting a first draft of the website ( http://imgur.com/ujsmjJz ) and the documentation (although there is still much to do) And after that, lots of bug fixes and environmen…

Interesting. I'm still searching for a powerful, yet simple to use stream processing library. Which projects inspired you to write ghostream.com?

I've played with a variety of frameworks (Storm and IBM Infosphere Streams are probably the two I have worked with the most) - In my previous job I was in a team which designed and developed our own (and later integrated partly with IBM Streams) I took down many lessons from the initial creation, the later integration and the work following that. ghostream was born out of those lessons.

Mostly I found the follow problems with existing frameworks :

- Tied to an execution environment - Storm with ZooKeeper and Streams with their own custom one. This makes it very difficult to use either for small projects - and limits integration choices when scaling.

- Resource hogs - The IBM Streams environment is a huge resource hog, I never really got that far with Storm but the number of dependencies it required just to get something up and running provided a similar sense of dread.

- Easy to debug/optimization - Streams has the best tools for this at the moment but they are all heavily tied to the execution environment. I'm hoping with ghostream that structures can be built at the protocol level to provide a way to build tools on top - not tied to any particular environment.

Re: Propose HN: Screenshot Saturday

#154
post #143

http://imgur.com/O1YnLed I'm writing a software synthesizer (a VST instrument plugin). I've been working solely on the DSP (audio processing) code for a while, and am shifting gears to work on the user interface. The synthesis algorithm, roughly, is that the graph on top describes a Lissajous curve which is used to shape the phase of a cosine oscillator, and there are two cycles of said oscillator displayed underneat…

Any guides on how to do this? I'm a programmer and my brother is a music producer.... he has a few ideas for plugins but I couldn't find any libraries online! Thanks!

The two main resources I refer to (and hang out around and in) are:

the KVR DSP forum: http://www.kvraudio.com/forum/viewforum.php?f=33

and the music-dsp mailing list: http://music.columbia.edu/mailman/listinfo/music-dsp

Even armed with all the resources in the world, though, I cannot stress how important just jumping in is. Write a couple of basic plugins and you'll get a really good feel for how the pieces fit together, what's important in the algorithms, etc.

Re: Propose HN: Screenshot Saturday

#155
post #130

I've been working on a new way of structuring data which results in fast, easy querying (here, of semantic data). Here is a screenshot of the result of a query for "all museums in Paris that have art by Picasso." http://imgur.com/Cskqx0f And here: European countries with a life expectancy less than 83, along with a graph of another one of the columns http://imgur.com/NhgVtW5 These are from the Windows app, but that m…

I'd like to hear more. Is this open source? I'm interested in semantic data, and how that's used. Do you have any recommended example sources to learn how to go it?

Sure -- my email is in my profile.

Re: Propose HN: Screenshot Saturday

#157
post #117

http://i.imgur.com/cLpWHc2.png Here you go, a test run for private quant machine learning delta neutral trading algo for sp500. Note: The numbers are for this short run only so don't draw any conlcusions from the training range shown etc.

What source are you using for the data? Yahoo finance?

[deleted]

Re: Propose HN: Screenshot Saturday

#158
post #117

http://i.imgur.com/cLpWHc2.png Here you go, a test run for private quant machine learning delta neutral trading algo for sp500. Note: The numbers are for this short run only so don't draw any conlcusions from the training range shown etc.

If you're willing to share, what's your approach? Are you using sklearn or doing any training on a GPU?

[deleted]

Re: Propose HN: Screenshot Saturday

#159
post #35

I've been creating something completely reckless for the last two weekends. Screenshot: http://i.imgur.com/y5b4Yy7.png Github: https://github.com/kijin/qade (MIT License) QADE (Quick and Dirty Editor) allows anyone who can access it over the web to view and/or edit any file that the web server process has access to, as well as execute any arbitrary shell command and view the result right on the web page (via the "Con…

I was thinking about doing the same thing with cloud9[1], this seems to be a nice alternative. [1]: https://github.com/ajaxorg/cloud9

QADE uses Cloud9's ACE editor, so the frontend will look very similar. The backend is written in PHP instead of node.js, though.

Re: Propose HN: Screenshot Saturday

#160
CloudHelix is in beta with a portal and data platform for network visibility and control - top talkers, dDoS detection, and mitigation hooks.

http://avi.net/ch-device.png (device overview) http://avi.net/ch-ports.png (graph/table for one dimension) http://avi.net/ch-query.png (it's all SQL underneath)

We're focusing more towards networks but can do host data also (the screenshots are from a Usenet server). The UI is just a shim on top of postgres, which itself is a frontend to the clustered DBs running things on the backend.

Feel free to ping me (avi at cloudhelix.com) if you want to play around.

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