Machine-Learning-with-Python

Small scale machine learning projects to understand the core concepts (order: oldest to newest)

• Topic Modelling using Latent Dirichlet Allocation with newsgroups20 dataset, implemented with Python and Scikit-Learn
• Implemented a simple neural network built with Keras on MNIST dataset
• Stock Price Forecasting on Google using Linear Regression
• Implemented a simple a social network to learn basics of Python
• Implemented Naives Bayes Classifier to filter spam messages on SpamAssasin Public Corpus
• Churn Prediction Model for banking dataset using Keras and Scikit-Learn
• Implemented Random Forest from scratch and built a classifier on Sonar dataset from UCI repository
• Simple Linear Regression in Python on sample dataset
• Multiple Regression in Python on sample dataset
• PCA and scaling sample stock data in Python [working_with_data]
• Decision Trees in Python on sample dataset
• Logistic Regression in Python on sample dataset
• Built a neural network in Python to defeat a captcha system
• Helper methods include commom operations used in Statistics, Probability, Linear Algebra and Data Analysis
• K-means clustering with example data; clustering colors with k-means; Bottom-up Hierarchical Clustering
• Generating Word Clouds
• Sentence generation using n-grams
• Sentence generation using Grammars and Automata Theory; Gibbs Sampling
• Topic Modelling using Latent Dirichlet Analysis (LDA)
• Wrapper for using Scikit-Learn's GridSearchCV for a Keras Neural Network
• Recommender system using cosine similarity, recommending new interests to users as well as matching users as per common interests
• Implementing different methods for network analysis such as PageRank, Betweeness Centrality, Closeness Centrality, EigenVector Centrality
• Implementing methods used for Hypothesis Inference such as P-hacking, A/B Testing, Bayesian Inference
• Implemented K-nearest neigbors for next presedential election and prediciting voting behavior based on nearest neigbors.

Installation notes

MLwP is built using Python 3.5. The easiest way to set up a compatible environment is to use Conda. This will set up a virtual environment with the exact version of Python used for development along with all the dependencies needed to run MLwP.

1. Download and install Conda.
2. Create a Conda environment with Python 3.

(Note: enter cd ~ to go on $HOME , then perform these commands)

```
conda create --name *your env name* python=3.5
```

You will get the following, mlwp-test is the env name used in this example

Solving environment: done

## Package Plan ##

environment location: /home/user/anaconda3/envs/mlwp-test

added / updated specs: 
 - python=3.5


The following NEW packages will be INSTALLED:

 ca-certificates: 2018.12.5-0            
 certifi:         2018.8.24-py35_1       
 libedit:         3.1.20181209-hc058e9b_0
 libffi:          3.2.1-hd88cf55_4       
 libgcc-ng:       8.2.0-hdf63c60_1       
 libstdcxx-ng:    8.2.0-hdf63c60_1       
 ncurses:         6.1-he6710b0_1         
 openssl:         1.0.2p-h14c3975_0      
 pip:             10.0.1-py35_0          
 python:          3.5.6-hc3d631a_0       
 readline:        7.0-h7b6447c_5         
 setuptools:      40.2.0-py35_0          
 sqlite:          3.26.0-h7b6447c_0      
 tk:              8.6.8-hbc83047_0       
 wheel:           0.31.1-py35_0          
 xz:              5.2.4-h14c3975_4       
 zlib:            1.2.11-h7b6447c_3      

Proceed ([y]/n)?  *Press y*

Preparing transaction: done
Verifying transaction: done
Executing transaction: done
#
# To activate this environment, use:
# > source activate mlwp-test
#
# To deactivate an active environment, use:
# > source deactivate
#

The environment is successfully created.

3. Now activate the Conda environment.

   source activate *your env name*
   

   You will get the following

   (mlwp-test) amogh@hp15X34:~$ 
   

   Enter conda list to get the list of available packages

       (mlwp-test) amogh@hp15X34:~$ conda list
   # packages in environment at /home/amogh/anaconda3/envs/mlwp-test:
   #
   # Name                    Version                   Build  Channel
   ca-certificates           2018.12.5                     0  
   certifi                   2018.8.24                py35_1  
   libedit                   3.1.20181209         hc058e9b_0  
   libffi                    3.2.1                hd88cf55_4  
   libgcc-ng                 8.2.0                hdf63c60_1  
   libstdcxx-ng              8.2.0                hdf63c60_1  
   ncurses                   6.1                  he6710b0_1  
   openssl                   1.0.2p               h14c3975_0  
   pip                       10.0.1                   py35_0  
   python                    3.5.6                hc3d631a_0  
   readline                  7.0                  h7b6447c_5  
   setuptools                40.2.0                   py35_0  
   sqlite                    3.26.0               h7b6447c_0  
   tk                        8.6.8                hbc83047_0  
   wheel                     0.31.1                   py35_0  
   xz                        5.2.4                h14c3975_4  
   zlib                      1.2.11               h7b6447c_3 
   

4. Install the required dependencies.

   (mlwp-test) amogh@hp15X34:~$ conda install --yes --file *path to requirements.txt*
   

5. In case you are not able to install the packages or getting PackagesNotFoundError Use the following command conda install -c conda-forge *list of packages separated by space*. For more info, refer issue #3 Unable to install requirements

How good is the code ?

• It is well tested
• It passes style checks (PEP8 compliant)
• It can compile in its current state (and there are relatively no issues)

How much support is available?

• FAQs (coming soon)
• Documentation (coming soon)

Issues

Feel free to submit issues and enhancement requests.

Contributing

Please refer to each project's style guidelines and guidelines for submitting patches and additions. In general, we follow the "fork-and-pull" Git workflow.

1. Fork the repo on GitHub
2. Clone the project to your own machine
3. Commit changes to your own branch
4. Push your work back up to your fork
5. Submit a Pull request so that we can review your changes

NOTE: Be sure to merge the latest from "upstream" before making a pull request!