gab | Gekko Automated Backtests | Reverse Engineering library
kandi X-RAY | gab Summary
kandi X-RAY | gab Summary
*** THIS IS BETA ***. If something does not work, it simply does not work since time hasn't existed yet to get it working. Gekko has been updated to work with the latest major branch of gekko (v0.6.x). 14/4 2018 Added MySQL (InnoDB) option but this also forced a new format to be used. A conversion tool for old SQLite db's is included under the new /tools/ -folder. Goto /tools/ and run it if you would like to convert your old data to the new database format. For massive runs it is also recommended to use the new MySQL option. 26/3 2018 Cleaned up most stuff and optimized many more + added a lot of things 'under the hood'. A lot of changes and changes to things such as the databases etc. This make this a version incompatible with the prior (first released) version. I needed a way to run backtests for Gekko in a 'brute-force' manner automated and with multi-threading. I also needed a way to compare all these runs and get extra data such as win% etc.
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Top functions reviewed by kandi - BETA
- Set config options
- Parse the file .
- Parse an array .
- Get the average value of an array
- Parse a value
- Get the strategies .
- Create TOML string
- Process a single line .
- Parse json string
- Create cache files
gab Key Features
gab Examples and Code Snippets
Community Discussions
Trending Discussions on gab
QUESTION
I was wondering how the y axis of a ggplot can be altered in a way that the distance between factors increases or deacreases hetergenous.
...ANSWER
Answered 2022-Mar-30 at 15:11You should set different values to the breaks
of different labels
in your scale_y_continuous
command in ggplot
. You can use the following code as an example:
QUESTION
I am using h2o autoML on python.
I used the autoML part to find the best model possible: it is a StackedEnsemble.
Now I would like to take the model and retrain it on a bigger dataset (which was not possible before because I would explode the google colab free RAM capacity).
But AutoML does some preprocessing to my data and I don't know which one.
How can I get the preprocessing steps to re-apply it to my bigger data before feeding it to the model ?
Thanks in advance,
Gab
...ANSWER
Answered 2022-Feb-16 at 23:54Stacked Ensemble is a model that is based on outputs of other models. To re-train the SE model you will need to re-train the individual models.
Apart from that AutoML will not pre-process the data. It delegates the pre-processing to downstream models. There is one exception - target encoding.
Did you enable TE in AutoML?
QUESTION
The following script, which checks the status codes of a Gab user's profile, outputs an error. How can I resolve this error?
Command to run ...ANSWER
Answered 2022-Feb-04 at 20:49When you are sending first request, you are adding status_code 200 to a data array. So, next iteration you are sending request to url 200
QUESTION
I have the following tables:
...ANSWER
Answered 2022-Jan-27 at 10:05If you generate all that should be there.
Then you can compare that with what's already there.
The solution here inserts all from CTE_ALL_ACC_FD that doesn't match with what's already in SCANDOCS.
QUESTION
I am struggling to use Live data on an MVVM pattern. The app is supposed to:
- Fetch data from an API (which it does correctly)
- Store that data in the Live data object from the ViewModel
- Then the fragment calls the Observer method to fill the recyclerView.
The problem comes in point 3, it does nothing, and I cannot find the solution.
Here is the relevant code. (If I'm missing something, I will try to answer as quickly as possible)
Main Activity:
...ANSWER
Answered 2022-Jan-11 at 14:06I think you don't need to switch Coroutine contexts. A few changes I'd expect if I were reviewing this code:
This should all be in the same IO
context. You then postValue
to your liveData.
QUESTION
I have a dataset with about 50 columns (all indicators I got from World Bank), Country Code and Year. These 50 columns are not all complete, and I would like to fill in the missing values based on an lm fit for the column for that specific country. For example:
Doing this for a single country and a single column is absolutely fine when following these steps here: Filling NA using linear regression in R
However, I have over 180 different countries I want to do this to. And I want this to work for each indicator per country (so 50 columns total) So in a way, each country and each column would have its own linear regression model that fills out the missing values.
Here is how it looked after I did the steps above: This is the expected output for ONE column. I would like to do this for EVERY column by individual country groups.
However, the data looks like this:
There are numerous countries and columns that I want to perform this on just like the post above.
This is for a project I am working on for my data-mining / statistics class. Any help would be appreciated and thanks so much in advance!
EDIT
I tried this:
...ANSWER
Answered 2021-Dec-02 at 13:40Since you already know how to do this for one dataframe with a single country, you are very close to your solution. But to make this easy on yourself, you need to do a few things.
Create a reproducible example using dput. The
janitor
library has the clean_names() function to fix columns names.Write your own interpolation function that takes a dataframe with one country as the input, and returns an interpolated dataframe for one country.
Pivot_longer to get all the data columns into a one parameterized column.
Use the
dplyr
function group_split to take your large multicountry dataframe, and break it into a list of dataframes, one for each country and parameter.Use the
purrr
function map to map each of the dataframes in the list to a new list of interpolate dataframes.Use dplyr's bind_rows to convert the list interpolated dataframes back into one dataframe, and pivot_wider to get your original data shape back.
QUESTION
I have tried to make it so when clicked play audio but this code doesn't work. I would also like to know how to implement this code that works.
...ANSWER
Answered 2021-Nov-09 at 20:24It appears you need to add an event listener for the canplay
or canplaythrough
event before calling audio.play()
. Try this:
QUESTION
ABC is a music notation; I'm working on patterns to parse it as part of an app.
Sometimes multiple renditions of a tune are in an ABC file, and I need to get just the first rendition -- or in an ideal world any rendition I specify. The beginning of a rendition is signified by the X: string.
It's not possible to know in advance how many renditions are in a file.
In Javascript, how can I return, for example, the first rendition (from the first X: inclusive to the beginning of the second) in the example below, in a way that will return the first if there is no second, and return the first if there are more than two renditions.
My work so far yields ([\s\S]*)(?=X:)
which succeeds in the two rendition example, but fails with a single rendition or more than two.
Adding an 'OR'd end of file condition to the lookahead lets the single rendition case work, but fails on the one and three rendition cases, e.g. \([\s\S]*)(?=X:|$)
Any help appreciated ... a good way to parse ABC will be used by many.
A two-rendition example can look like the below -- for a three rendition example just add a line with X: at the end, and for a single chop off everything from the second X:
EDITS: Folks have been kind enough to ask for better examples, and they won't fit in a comment, so here's a few
Broken pledge is interesting because it has more than one ABC and they're not numbered sequentially:
...ANSWER
Answered 2021-Sep-19 at 17:19This is a complete rewrite of the answer, sorry. The following function returns the info you are currently interested in (it can be extended to return more info, like, e.g., the titles of the renditions as an array sharing indices with the renditions
array).
QUESTION
Solution found! Scroll to the end to see what I did. Hopefully, this function can help others.
TLDR: I have a list: https://i.stack.imgur.com/7t6Ej.png
and I need to do something like this to it
...ANSWER
Answered 2021-Sep-30 at 13:57This was the code that I used to create the loop that I wanted.
QUESTION
Suppose we want to unmarshal the JSON string {"e": "foo", "E": 1}
.
Unmarshalling using the type messageUppercaseE
works like expected. When using the type message
though, the error json: cannot unmarshal number into Go struct field message.e of type string
is returned.
- Why are we not able to unmarshal the JSON, if only the
"e"
struct tag is present? - How would I be able to unmarshal the JSON? (I know that I am able to do this via Jeffail/gabs, but would like to stick to the type based approach.)
ANSWER
Answered 2021-Sep-10 at 16:05Quoting the docs for unmarshal:
To unmarshal JSON into a struct, Unmarshal matches incoming object keys to the keys used by Marshal (either the struct field name or its tag), preferring an exact match but also accepting a case-insensitive match.
In this case, it is the case-insensitive match that causes the trouble.
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