rekcurd-python

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Project for serving ML module. This is a gRPC micro-framework.

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# Rekcurd

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Rekcurd is the Project for serving ML module. This is a gRPC micro-framework and it can be used like [Django](https://docs.djangoproject.com/) and [Flask](http://flask.pocoo.org/).

## Parent Project
https://github.com/rekcurd/community

## Components
- [Rekcurd](https://github.com/rekcurd/rekcurd-python): Project for serving ML module.
- [Rekcurd-dashboard](https://github.com/rekcurd/dashboard): Project for managing ML model and deploying ML module.
- [Rekcurd-client](https://github.com/rekcurd/python-client): Project for integrating ML module.

## Installation
From source:

```bash
$ git clone --recursive https://github.com/rekcurd/rekcurd-python.git
$ cd rekcurd-python
$ pip install -e .
```

From [PyPi](https://pypi.org/project/rekcurd/) directly:

```bash
$ pip install rekcurd
```

## How to use
Example is available [here](https://github.com/rekcurd/rekcurd-example/tree/master/python/sklearn-digits). You can generate Rekcurd template and implement necessary methods.

```bash
$ rekcurd startapp {Your application name}
$ cd {Your application name}
$ vi app.py
$ python app.py
```

## Unittest
```
$ python -m unittest
```

## Kubernetes support
Rekcurd can be run on Kubernetes. See [community repository](https://github.com/rekcurd/community).

## Type definition
### `PredictLabel` type
*V* is the length of feature vector.

|Field |Type |Description |
|:---|:---|:---|
|input (required) |One of below - string - bytes - string[*V*] - int[*V*] - double[*V*] |Input data for inference. - "Nice weather." for a sentiment analysis. - PNG file for an image transformation. - ["a", "b"] for a text summarization. - [1, 2] for a sales forcast. - [0.9, 0.1] for mnist data. |
|option |string| Option field. Must be json format. |

The "option" field needs to be a json format. Any style is Ok but we have some reserved fields below.

|Field |Type |Description |
|:---|:---|:---|
|suppress_log_input |bool |True: NOT print the input and output to the log message. False (default): Print the input and outpu to the log message. |
|YOUR KEY |any |YOUR VALUE |

### `PredictResult` type
*M* is the number of classes. If your algorithm is a binary classifier, you set *M* to 1. If your algorithm is a multi-class classifier, you set *M* to the number of classes.

|Field |Type |Description |
|:---|:---|:---|
|label (required) |One of below -string -bytes -string[*M*] -int[*M*] -double[*M*] |Result of inference. -"positive" for a sentiment analysis. -PNG file for an image transformation. -["a", "b"] for a multi-class classification. -[1, 2] for a multi-class classification. -[0.9, 0.1] for a multi-class classification. |
|score (required) |One of below -double -double[*M*] |Score of result. -0.98 for a binary classification. -[0.9, 0.1] for a multi-class classification. |
|option |string |Option field. Must be json format. |

### `EvaluateResult` type
`EvaluateResult` is the evaluation score. *N* is the number of evaluation data. *M* is the number of classes. If your algorithm is a binary classifier, you set *M* to 1. If your algorithm is a multi-class classifier, you set *M* to the number of classes.

|Field |Type |Description |
|:---|:---|:---|
|num (required)|int |Number of evaluation data. |
|accuracy (required) |double |Accuracy. |
|precision (required) |double[*M*] |Precision. |
|recall (required) |double[*M*] |Recall. |
|fvalue (required) |double[*M*] |F1 value. |

### `EvaluateDetail` type
`EvaluateDetail` is the details of evaluation result.

|Field |Type |Description |
|:---|:---|:---|
|result (required) |PredictResult |Prediction result. |
|is_correct (required) |bool |Correct or not. |

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