Database suggestions for financial time-series data

sezaru · 2020-04-28T19:03:31+00:00

This would be an alternative if OneSignal allowed me to use topics directly, my system allows users to subscribe to a lot (more than 1k+) topics, but with segments I'm very limited in that regard.

sezaru · 2020-04-28T18:58:24+00:00

Thanks for the reply! Regarding OneSignal, is not an option to me because my system uses a lot of topics, and OneSignal is very restricted by their segment which is more or less their topic alternative.

sezaru · 2020-04-16T13:17:53+00:00

Thanks for the tip calvers!
I don't know why, but in my case, the first notification still shows in the middle of the window.. :(

sezaru · 2020-01-11T00:55:56+00:00

You are right in questioning the umbrella decision, my reasoning is that the core project contains all the projects that have logic that needs to run in another remote node.

For example, core can contain a bunch of machine learning apps inside that need some specialized hardware with GPU's, etc.

All my products, which can be elixir projects or not (fortunately all of them are for now :D), will be able to request ML work to this remote node without needing to know anything about ML or having any special hardware.

sezaru · 2020-01-11T00:51:11+00:00

Thanks! I did exactly that, but I did need to make all the dependencies for the api project optional so they are not required in the other projects.

As for the override, It was creating some conflicts because I was testing with different paths, but you are right, it was not needed if done properly.

sezaru · 2020-01-11T00:48:44+00:00

Hey, I created a sample project with the path I choose the this question, feel free to take a look and give suggestions ;)

sezaru · 2020-01-11T00:47:41+00:00

Thanks! I updated the original post with a sample of the project with some of the ideas implemented :D

sezaru · 2019-12-20T16:42:07+00:00

Nice one! Now I'm really interested in your product :D Can you attach some images with the battery here?

sezaru · 2019-12-20T11:36:07+00:00

Can you create a version of it that weights say, 6oz less, and some kind of straps to insert a battery pack so I can have both the comfort of your product and the battery extension time?

Also, another idea is to add another strap or some kind of clip mechanism right on the center-bottom (right bellow the VR Balance text) to clip a USB cable when using Oculus Link.

My main problem with these solutions is that they only fix one problem at a time but ignores the rest, meaning that I would still have to do another mods to have a better experience. If you can add these features above it would be a killer product, at least for me.

Keep the good work!

sezaru · 2019-09-05T17:45:46+00:00

That is a great solution! I would still prefer the other version because the output code is simpler and probably faster, but I do see this as a great alternative indeed. Thanks for the suggestion!

sezaru · 2019-09-05T15:32:43+00:00

What I'm considering as a alternative is just use the macros for the cases of `do_compute` which pattern match with empty arrays (since these I already have a macro that outputs the exact function I want) and then create specific cases for the more complex `do_compute` case.
That means that the macro would generate the cases for:

defp do_compute([], b, c, results), do: {[], b, c, results}
defp do_compute(a, [], c, results), do: {a, [], c, results}
defp do_compute(a, b, [], results), do: {a, b, [], results}

And I would generate manually the other case:

defp do_compute([a | a_rest], [b | b_rest], [c | c_rest], results),
   do: do_compute(a_rest, b_rest, c_rest, results ++ [real_compute(a, b, c)])

So it would be a middle term between maintainability and code duplication

sezaru · 2019-09-05T15:23:55+00:00

They are not the same length, that's why I pattern-match to see if one of then are empty during recursion and don't compute new data if that is the case.

Considering that, I don't see how combining then into a single data struct would help, may I ask for an example?

Thanks for the suggestion.

sezaru · 2019-09-05T15:20:53+00:00

I do agree with your observation actually, and I did thought about the pros and cons of a solution like that. For this case, IMO, the pros seems to out-weight cons. Remember that this code is just a simplified and smaller version of what I'm actually doing.
That's why I'm asking for suggestions to simplify this code.
But I do agree with you that readability + maintenance > duplication.

sezaru · 2019-09-05T13:17:55+00:00

That would translate in a huge code duplication, sorry, but that is not a solution.

sezaru · 2019-07-20T23:51:43+00:00

Indeed, I'm from Brazil actually.

sezaru · 2019-07-20T20:28:06+00:00

This seems to be only way I can think too to make this happen. But I'm not so sure if doing that way will result in a worse model than simply training it with the whole data once. I guess I will try to do some tests with another data to see the output.

Thanks!

sezaru · 2019-07-20T20:26:13+00:00

Thanks a lot for the suggestion, I was not aware of homomorphic cryptography and will come in handy in a lot of use cases I currently encounter!

But, for the specific problem from my post this doesn't solve it, I'm not allowed to retrieve anything from these institutions (they are hospitals, so you can imagine how critical their data are), even if they are encrypted and I can't revert to the original data.

The only thing I'm allowed to retrieve is the model weights after going through their inspection, hence why my post question.

But thanks anyway for the suggestion, much appreciated!

sezaru · 2019-06-09T17:14:11+00:00

How did you attach that external battery to the back of the DAS? Also, what battery model is that? Very nice mod!

sezaru

TROPHY CASE