Programming Assignment – 4 Implementing Backpropagation


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CS:5007 Deep Learning
Programming Assignment – 4
Implementing Backpropagation
1. (5 points) Implement your own fully connected feed-forward neural network with backpropagation from scratch
for the task of classification on the given dataset.
• Dataset
This dataset is about the confirmed COVID-19 cases in Ontario. The original data comes from the following file “Confirmed positive cases of COVID19 in Ontario” at:
confirmed-positive-cases-of-covid-19-in-ontario. The original dataset is resampled and divided
into training and test data, namely, data train.csv and data test.csv respectively, for this assignment. The
target label is the column ‘Outcome1’ which is present only in data train.csv. The labels are strings and
three different labels are there as follows: Fatal, Resolved, Not Resolved. You should convert categorical
features to numerical or one-hot encoded feature, as appropriate.
• Task
Classify the confirmed COVID-19 cases among the three different classes: Fatal, Resolved, Not Resolved.
Setup and train your own fully connected feed-forward neural network model to perform this task.
• Evaluation Criteria
(a) (2 points) We will evaluate Mean F1-Score based on the predictions made by your model on
data test.csv. The F1 score, commonly used in information retrieval, measures accuracy using the
statistics precision p and recall r. Precision is the ratio of true positives (tp) to all predicted positives
(tp + f p). Recall is the ratio of true positives to all actual positives (tp + fn). The F1 score is given
F1 = 2
p · r
p + r
where p =
tp + f p, r =
tp + fn
The F1 metric weights recall and precision equally, and a good retrieval algorithm will maximize both
precision and recall simultaneously. Thus, moderately good performance on both will be favoured over
Row ID Outcome1
1 Fatal
2 Resolved
3 Not Resolved
extremely good performance on one and poor performance on the other.
You must submit your predictions in a .csv file with the name of the file as ‘Predictions.csv’. The file
should contain two columns: Row ID and Outcome1. The file should contain a header and have the
following format:
(b) (3 points) Write a report including the following:
i. Give a detailed explanation of your approach which must include: Data preprocessing, model
architecture, loss function, optimizer used and relevant hyperparameters.
ii. Mention how you evaluated your model’s generalization performance. Plot the train accuracy and
validation accuracy per iteration curve and write your observations. NOTE: You must submit the
report in PDF format with the name of the file as ‘Report.pdf’.


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