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<br>
<p align="center">
<h2 align="center"> Atlantic - Automated Data Preprocessing Framework for Supervised Machine Learning
<br>
## Framework Contextualization <a name = "ta"></a>
The `Atlantic` project constitutes an comprehensive and objective approach to simplify and automate data processing through the integration and objectively validated application of various preprocessing mechanisms, ranging from feature engineering, automated feature selection, multiple encoding versions and null imputation methods. The optimization methodology of this framework follows a evaluation structured in tree based models ensembles.
This project aims at providing the following application capabilities:
* General applicability on tabular datasets: The developed preprocessing procedures are applicable on multiple domains associated with Supervised Machine Learning, regardless of the properties or specifications of the data.
* Automated treatment of tabular data associated with predictive analysis: It implements a global and carefully validated data processing based on the characteristics of the data input columns.
* Robustness and improvement of predictive results: The implementation of the `atlantic` automated data preprocessing pipeline aims at improving predictive performance directly associated with the processing methods implemented based on the data properties.
#### Main Development Tools <a name = "pre1"></a>
Major frameworks used to built this project:
* [H2O.ai](https://docs.h2o.ai/h2o/latest-stable/h2o-docs/automl.html)
* [Scikit-learn](https://scikit-learn.org/stable/)
* [XGBoost](https://xgboost.readthedocs.io/en/stable/)
* [Optuna](https://optuna.org/)
* [Pandas](https://pandas.pydata.org/)
## Framework Architecture <a name = "ta"></a>
<p align="center">
<img src="https://i.ibb.co/C9dWJmk/ATL-Architecture-Final.png" align="center" width="700" height="680" />
</p>
## Where to get it <a name = "ta"></a>
Binary installer for the latest released version is available at the Python Package Index [(PyPI)](https://pypi.org/project/atlantic/).
The source code is currently hosted on GitHub at: https://github.com/TsLu1s/atlantic
## Installation
To install this package from Pypi repository run the following command:
```
pip install atlantic
```
# Usage Examples
## 1. Atlantic - Automated Data Preprocessing Pipeline
In order to be able to apply the automated preprocessing `atlantic` pipeline you need first to import the package.
The following needed step is to load a dataset, split it and define your to be predicted target column name into the variable `target`.
You can customize the `fit_processing` method by altering the following running pipeline parameters:
* split_ratio: Division ratio (Train\Validation) in which the preprocessing methods will be evaluated within the loaded Dataset.
* relevance: Minimal value of the total sum of relative feature importance percentage selected in the `H2O AutoML feature selection` step.
* h2o_fs_models: Quantity of models generated for competition in step `H2O AutoML feature selection` to evaluate the relative importance of each feature (only leaderboard model is selected for evaluation).
* encoding_fs: You can choose if you want to enconde categorical features in order to reduce loading time in `H2O AutoML feature selection` step.
* vif_ratio: This value defines the minimal `threshold` for Variance Inflation Factor filtering (default value=10).
Once the data fitting process is complete, you can automaticaly optimize preprocessing transformations on all future dataframes with the same properties using the `data_processing` method.
```py
import pandas as pd
from sklearn.model_selection import train_test_split
from atlantic.pipeline import Atlantic
import warnings
warnings.filterwarnings("ignore", category=Warning) # -> For a clean console
data = pd.read_csv('csv_directory_path', encoding='latin', delimiter=',') # Dataframe Loading Example
# data["Target Column"] = data["Target Column"].astype(str) # -> If Classification Task
train,test = train_test_split(data, train_size = 0.8)
test,future_data = train_test_split(test, train_size = 0.6)
# Resetting Index is Required
train = train.reset_index(drop=True)
test = test.reset_index(drop=True)
future_data = future_data.reset_index(drop=True)
future_data.drop(columns=["Target_Column"], inplace=True) # Drop Target
### Fit Data Processing
atl = Atlantic(X = train, # X:pd.DataFrame, target:str="Target_Column"
target = "Target Column")
atl.fit_processing(split_ratio = 0.75, # split_ratio:float=0.75, relevance:float=0.99 [0.5,1]
relevance = 0.99, # h2o_fs_models:int [1,100], encoding_fs:bool=True\False
h2o_fs_models = 7, # vif_ratio:float=10.0 [3,30]
encoding_fs = True,
vif_ratio = 10.0)
### Transform Data Processing
train = atl.data_processing(X = train)
test = atl.data_processing(X = test)
future_data = atl.data_processing(X = future_data)
### Export Atlantic Preprocessing Metadata
import dill as pickle
with open('fit_atl.pkl', 'wb') as output:
pickle.dump(atl, output)
```
## 2. Atlantic - Preprocessing Data
### 2.1 Encoding Versions
There are multiple preprocessing methods available to direct use. This package provides upgrated encoding `LabelEncoder`, `OneHotEncoder` and `InverseFrequency` ([IDF](https://pypi.org/project/cane/) based) methods with an automatic multicolumn application.
```py
import pandas as pd
from sklearn.model_selection import train_test_split
from atlantic.processing.encoders import AutoLabelEncoder, AutoIFrequencyEncoder, AutoOneHotEncoder
train,test = train_test_split(data, train_size=0.8)
train,test = train.reset_index(drop=True), test.reset_index(drop=True) # Required
target = "Target_Column" # -> target feature name
cat_cols = [col for col in data.select_dtypes(include=['object']).columns if col != target]
### Encoders
## Create Label Encoder
encoder = AutoLabelEncoder()
## Create InverseFrequency Encoder
encoder = AutoIFrequencyEncoder()
## Create One-hot Encoder
encoder = AutoOneHotEncoder()
## Fit
encoder.fit(train[cat_cols])
# Transform the DataFrame using Label\IF\One-hot Encoding
train = encoder.transform(X = train)
test = encoder.transform(X = test)
# Perform an inverse transform to convert it back the original categorical columns values
train = encoder.inverse_transform(X = train)
test = encoder.inverse_transform(X = test)
```
### 2.2 Feature Selection and Null Imputation Methods
Atlantic provides automated feature selection methods (H2O AutoML and VIF-based) and null imputation techniques (Simple, KNN, and Iterative). Check out the <a href="https://github.com/TsLu1s/atlantic/edit/main/examples/custom_preprocessing.py" style="text-decoration:none;">
<img src="https://img.shields.io/badge/Custom%20Preprocessing-blue?style=for-the-badge&logo=readme&logoColor=white" alt="Custom Preprocessing">
</a> for detailed implementations of all preprocessing methods integrated in `Atlantic`.
## Citation
Feel free to cite Atlantic as following:
```
@article{SANTOS2023100532,
author = {Luis Santos and Luis Ferreira}
title = {Atlantic - Automated data preprocessing framework for supervised machine learning},
journal = {Software Impacts},
volume = {17},
year = {2023},
issn = {2665-9638},
doi = {http://dx.doi.org/10.1016/j.simpa.2023.100532},
url = {https://www.sciencedirect.com/science/article/pii/S2665963823000696}
}
```
## License
Distributed under the MIT License. See [LICENSE](https://github.com/TsLu1s/Atlantic/blob/main/LICENSE) for more information.
## Contact
[Luis Santos - LinkedIn](https://www.linkedin.com/in/lu%C3%ADsfssantos/)
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The optimization methodology of this framework follows a evaluation structured in tree based models ensembles.\r\n\r\nThis project aims at providing the following application capabilities:\r\n\r\n* General applicability on tabular datasets: The developed preprocessing procedures are applicable on multiple domains associated with Supervised Machine Learning, regardless of the properties or specifications of the data.\r\n\r\n* Automated treatment of tabular data associated with predictive analysis: It implements a global and carefully validated data processing based on the characteristics of the data input columns.\r\n\r\n* Robustness and improvement of predictive results: The implementation of the `atlantic` automated data preprocessing pipeline aims at improving predictive performance directly associated with the processing methods implemented based on the data properties. \r\n \r\n#### Main Development Tools <a name = \"pre1\"></a>\r\n\r\nMajor frameworks used to built this project: \r\n \r\n* [H2O.ai](https://docs.h2o.ai/h2o/latest-stable/h2o-docs/automl.html)\r\n* [Scikit-learn](https://scikit-learn.org/stable/)\r\n* [XGBoost](https://xgboost.readthedocs.io/en/stable/)\r\n* [Optuna](https://optuna.org/)\r\n* [Pandas](https://pandas.pydata.org/)\r\n\r\n \r\n## Framework Architecture <a name = \"ta\"></a>\r\n\r\n<p align=\"center\">\r\n <img src=\"https://i.ibb.co/C9dWJmk/ATL-Architecture-Final.png\" align=\"center\" width=\"700\" height=\"680\" />\r\n</p> \r\n\r\n## Where to get it <a name = \"ta\"></a>\r\n\r\nBinary installer for the latest released version is available at the Python Package Index [(PyPI)](https://pypi.org/project/atlantic/). \r\n\r\nThe source code is currently hosted on GitHub at: https://github.com/TsLu1s/atlantic\r\n\r\n## Installation \r\n\r\nTo install this package from Pypi repository run the following command:\r\n\r\n```\r\npip install atlantic\r\n```\r\n\r\n# Usage Examples\r\n \r\n## 1. Atlantic - Automated Data Preprocessing Pipeline\r\n\r\nIn order to be able to apply the automated preprocessing `atlantic` pipeline you need first to import the package. \r\nThe following needed step is to load a dataset, split it and define your to be predicted target column name into the variable `target`.\r\nYou can customize the `fit_processing` method by altering the following running pipeline parameters:\r\n* split_ratio: Division ratio (Train\\Validation) in which the preprocessing methods will be evaluated within the loaded Dataset.\r\n* relevance: Minimal value of the total sum of relative feature importance percentage selected in the `H2O AutoML feature selection` step.\r\n* h2o_fs_models: Quantity of models generated for competition in step `H2O AutoML feature selection` to evaluate the relative importance of each feature (only leaderboard model is selected for evaluation).\r\n* encoding_fs: You can choose if you want to enconde categorical features in order to reduce loading time in `H2O AutoML feature selection` step.\r\n* vif_ratio: This value defines the minimal `threshold` for Variance Inflation Factor filtering (default value=10).\r\n\r\nOnce the data fitting process is complete, you can automaticaly optimize preprocessing transformations on all future dataframes with the same properties using the `data_processing` method.\r\n \r\n```py\r\nimport pandas as pd\r\nfrom sklearn.model_selection import train_test_split\r\nfrom atlantic.pipeline import Atlantic\r\nimport warnings\r\nwarnings.filterwarnings(\"ignore\", category=Warning) # -> For a clean console\r\n \r\ndata = pd.read_csv('csv_directory_path', encoding='latin', delimiter=',') # Dataframe Loading Example\r\n# data[\"Target Column\"] = data[\"Target Column\"].astype(str) # -> If Classification Task\r\n\r\ntrain,test = train_test_split(data, train_size = 0.8)\r\ntest,future_data = train_test_split(test, train_size = 0.6)\r\n\r\n# Resetting Index is Required\r\ntrain = train.reset_index(drop=True)\r\ntest = test.reset_index(drop=True)\r\nfuture_data = future_data.reset_index(drop=True)\r\n\r\nfuture_data.drop(columns=[\"Target_Column\"], inplace=True) # Drop Target\r\n\r\n### Fit Data Processing\r\n\r\natl = Atlantic(X = train, # X:pd.DataFrame, target:str=\"Target_Column\"\r\n target = \"Target Column\") \r\n\r\natl.fit_processing(split_ratio = 0.75, # split_ratio:float=0.75, relevance:float=0.99 [0.5,1]\r\n relevance = 0.99, # h2o_fs_models:int [1,100], encoding_fs:bool=True\\False\r\n h2o_fs_models = 7, # vif_ratio:float=10.0 [3,30]\r\n encoding_fs = True,\r\n vif_ratio = 10.0)\r\n\r\n### Transform Data Processing\r\n\r\ntrain = atl.data_processing(X = train)\r\ntest = atl.data_processing(X = test)\r\nfuture_data = atl.data_processing(X = future_data)\r\n\r\n### Export Atlantic Preprocessing Metadata\r\n\r\nimport dill as pickle\r\nwith open('fit_atl.pkl', 'wb') as output:\r\n pickle.dump(atl, output)\r\n \r\n``` \r\n\r\n## 2. Atlantic - Preprocessing Data\r\n \r\n### 2.1 Encoding Versions\r\n \r\nThere are multiple preprocessing methods available to direct use. This package provides upgrated encoding `LabelEncoder`, `OneHotEncoder` and `InverseFrequency` ([IDF](https://pypi.org/project/cane/) based) methods with an automatic multicolumn application. \r\n \r\n```py\r\nimport pandas as pd\r\nfrom sklearn.model_selection import train_test_split \r\nfrom atlantic.processing.encoders import AutoLabelEncoder, AutoIFrequencyEncoder, AutoOneHotEncoder\r\n\r\ntrain,test = train_test_split(data, train_size=0.8)\r\ntrain,test = train.reset_index(drop=True), test.reset_index(drop=True) # Required\r\n\r\ntarget = \"Target_Column\" # -> target feature name\r\n \r\ncat_cols = [col for col in data.select_dtypes(include=['object']).columns if col != target]\r\n\r\n### Encoders\r\n## Create Label Encoder\r\nencoder = AutoLabelEncoder()\r\n## Create InverseFrequency Encoder\r\nencoder = AutoIFrequencyEncoder()\r\n## Create One-hot Encoder\r\nencoder = AutoOneHotEncoder()\r\n\r\n## Fit\r\nencoder.fit(train[cat_cols])\r\n\r\n# Transform the DataFrame using Label\\IF\\One-hot Encoding\r\ntrain = encoder.transform(X = train)\r\ntest = encoder.transform(X = test)\r\n\r\n# Perform an inverse transform to convert it back the original categorical columns values\r\ntrain = encoder.inverse_transform(X = train)\r\ntest = encoder.inverse_transform(X = test)\r\n \r\n``` \r\n \r\n### 2.2 Feature Selection and Null Imputation Methods\r\n\r\nAtlantic provides automated feature selection methods (H2O AutoML and VIF-based) and null imputation techniques (Simple, KNN, and Iterative). Check out the <a href=\"https://github.com/TsLu1s/atlantic/edit/main/examples/custom_preprocessing.py\" style=\"text-decoration:none;\">\r\n <img src=\"https://img.shields.io/badge/Custom%20Preprocessing-blue?style=for-the-badge&logo=readme&logoColor=white\" alt=\"Custom Preprocessing\">\r\n</a> for detailed implementations of all preprocessing methods integrated in `Atlantic`.\r\n\r\n\r\n## Citation\r\n\r\nFeel free to cite Atlantic as following:\r\n\r\n```\r\n\r\n@article{SANTOS2023100532,\r\n author = {Luis Santos and Luis Ferreira}\r\n title = {Atlantic - Automated data preprocessing framework for supervised machine learning},\r\n journal = {Software Impacts},\r\n volume = {17},\r\n year = {2023},\r\n issn = {2665-9638},\r\n doi = {http://dx.doi.org/10.1016/j.simpa.2023.100532},\r\n url = {https://www.sciencedirect.com/science/article/pii/S2665963823000696}\r\n}\r\n\r\n```\r\n\r\n \r\n## License\r\n\r\nDistributed under the MIT License. See [LICENSE](https://github.com/TsLu1s/Atlantic/blob/main/LICENSE) for more information.\r\n\r\n## Contact \r\n \r\n[Luis Santos - LinkedIn](https://www.linkedin.com/in/lu%C3%ADsfssantos/)\r\n",
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