NeuralNetwork_Charity_Donation

Project Background

• Create a deep-learning neural network to analyze and classify the success of charitable donations in order to determine the future decisions of the company—only those projects likely to be a success will receive any future funding.

Dataset Information

A csv file containing more than 34,000 organizations that have received funding over the years.

Columns metadata:

• EIN and NAME—Identification columns (irrelevant variables)

• APPLICATION_TYPE—Charity Foundation application type (irrelevant variables)

• AFFILIATION—Affiliated sector of industry (Features)

• CLASSIFICATION—Government organization classification (Features)

• USE_CASE—Use case for funding (Features)

• ORGANIZATION—Organization type (Features)

• STATUS—Active status (irrelevant variables)

• INCOME_AMT—Income classification (Features)

• SPECIAL_CONSIDERATIONS—Special consideration for application (irrelevant variables)

• ASK_AMT—Funding amount requested (Features)

• IS_SUCCESSFUL—Was the money used effectively (Target)

The model's structure

Total params: 8,903 Trainable params: 8,903 Non-trainable params: 0

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Analysis Report

1. In this deep-learning neural ntework model, there are total three hidden layers with 84, 50 and 20 neurons respectively. The input shape was (42,) and output layer's neurons was 1 (binary_classification). The optimizer is adam and loss metrics setting is binary_crossentropy.

2. The model's predictive accuracy was under 75%, which means the model was not able to predict correctly whether or not a target company will be re-funded over 57% of the time.

3. In order to try and improve the model predictive performance, I tried to remove outliers and noisy in ASK_AMT variable by using 3 times of zscore method. In addition, removing irrelerant variables provided a few improvement. remove_outliers.PNG

Despite of reducing dimensionality with PCA (Principal Component Analysis), the model's accuracy didn't significantly improve.

4. I tried to add a LeakyReLU layer to deep-learning model, but it didn't work as I expected. Furthermore, adding some regularizers on nauron's kernel still failed.

Analysis Outcomes

The model's accuracy recording: