Answers by tofighi

The dataset of pass/fail in an exam for 5 students is given in the table below. If we use Logistic Regression as the classifier and assume the model suggested by the opti...

In the figure below, a neural network is shown. Calculate the following:1) How many neurons do we have in the input layer and the output layer?2) How many hidden layers d...

For the below neural network, imagine we are going to use the backpropagation algorithm to update weights. If the Bias (b) in this problem is always 0 (ignore bias when y...

In Wikipedia, or any other document there are some math equations I am looking a simple way to convert to LaTeX. Is there any easy way for it?

Assume we have the following neural network and all activation functions are $f(z)=z$. If the weights are initialized with the values you see in table below, what will be...

For the following dataset, calculate the regression equation $\hat{y} = ax+b$datasetxy1423501075161002615036200

Dataframe looks like belowI have dataframe like above. which I want to a~t reshape (a~t, 1)I want to reshape dataframe like below ( b~t column is go to under the a column...

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The scatter plot of Iris Dataset is shown in the figure below. Assume Softmax Regression is used to classify Iris to Setosa, Versicolor, or Viriginica using just petal le...

I preprocessed the data, normalized the numerical features, and did one hot encoding for the categorical ones. I end up with a model with R^2=0.7 and RMSE which is 15% of...

How do you determine the weight values that connect to the other data points when solving for our output in neural networks?

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Please also check if the fibo(7) = 8

the code is import numpy as np import pandas as pd from keras.models import Sequential from keras.layers import Dense, LSTM, Dropout from keras.layers.core import Dense, ...

I'm trying to create a regression with a data set that does not contain any nulls and has a very few outliers. I fit a linear regression, a random forest, and a gbm model...

I’ve heard that it’s hard to visualize the output of random forest models with large trees/forest but I’m finding it hard to understand what the use case for the model i...