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Questions by tofighi
0
0 votes
1
answers
1 answer
693
693 views
What are the values stored in tc8 format for the following numbers?
Q1) Calculate tc8 of -117, -127, 127, 0Q2) What values are stored in the following tc8 registers:100100010001000101111111000000011111111
asked
Jan 23, 2020
Discrete Mathematics
discrete-math
tc8
+
–
0
0 votes
0
0 answers
886
886 views
What are the best website to find icons for our interfaces?
I am wondering if you can share a list of websites for designing interfaces.
asked
Sep 18, 2019
Human Computer Interaction
hci
icon
+
–
0
0 votes
1
1 answer
653
653 views
What are the key features of Python?
asked
Jul 9, 2019
Python Interview Questions
python
python-basics
python-interview
+
–
0
0 votes
1
1 answer
652
652 views
What are the most important Python libraries for data science?
asked
Jul 7, 2019
General
data-science
python
library
+
–
4
4 votes
1
answers
1 answer
7.6k
7.6k views
How to perform a classification or regression using k-NN?
Suppose, you have given the following dataset where x and y are the 2 features and color Red or Blue is the target variable.a) A new data point $x=1$ and $y=1$ is given. ...
asked
Jun 26, 2019
Machine Learning
machine-learning
knn
regression
classification
ml-exercise
ml-midterm
ele888-midterm
+
–
2
2 votes
1
answers
1 answer
20.9k
20.9k views
How to calculate k-means clustering with a numerical example?
Use the k-means algorithm and Euclidean distance to cluster the following 8 examples into 3 clusters:$A1=(2,10), A2=(2,5), A3=(8,4), A4=(5,8), A5=(7,5), A6=(6,4), A7=(1,2...
asked
Jun 26, 2019
Machine Learning
machine-learning
k-means
ml-exercise
ml-midterm
ele888-midterm
+
–
2
2 votes
1
answers
1 answer
4.9k
4.9k views
How to calculate the class probabilities and classify using Naive Bayes classifier for NLP?
We want to use Naive Bayes for tagging documents. It is a classification task that we want to assign a class (tag) to each string. We currently have two tags: Sport and N...
asked
Jun 26, 2019
Machine Learning
machine-learning
naive-bayes
nlp
natural-language-process
ml-exercise
ele888-final
ai-final
+
–
2
2 votes
1
answers
1 answer
20.4k
20.4k views
How to calculate Covariance Matrix and Principal Components for PCA?
The dataset with two features $(x,y)$ is shown as follows (note $y$ in this example is the second feature, not a target value):xy2.52.40.50.72.22.91.92.23.13.02.32.72.01....
asked
Jun 26, 2019
Machine Learning
machine-learning
covariance-matrix
eigen-vector
eigen-value
pca
ml-exercise
ele888-final
+
–
5
5 votes
1
answers
1 answer
9.1k
9.1k views
How to calculate convolutions on a CONV layer for a Convolutional Neural Network?
Assume we have a $5\times5$ px RGB image with 3 channels respectively for R, G, and B. IfR2000012001201021210101020G0212211100002202002002111B0100111201102021011012112 We...
asked
Jun 26, 2019
Deep Learning
machine-learning
deep-learning
ml-exercise
cnn
ml-final
ele888-final
ai-final
+
–
0
0 votes
1
1 answer
2.9k
2.9k views
What is the difference between cross-validation and validation set?
I am confused about this figure. Is not this a cross-validation test or we have a fixed few examples for which it is tested while you also have various folds being tested...
asked
Jun 19, 2019
Machine Learning
machine-learning
cross-validation
validation-set
test-set
+
–
2
2 votes
2
2 answers
10.5k
10.5k views
How to optimize weights in Logistic Regression?
The hypothesis (model) of Logistic Regression which is a binary classifier ( $y =\{0,1\} $) is given in the equation below:Hypothesis$S(z)=P(y=1 | x)=h_{\theta}(x)=\frac{...
asked
Jun 5, 2019
Machine Learning
machine-learning
logistic-regression
batch
mini-batch
epoch
ml-exercise
ele888-midterm
+
–
0
0 votes
1
1 answer
709
709 views
What are some best features of Python3 in comparison to Python2?
Python3 and Python2 seems so similar, and the only changes which are obvious are some changes in functions such as print that now needs parentheses. Are there other impro...
asked
May 20, 2019
Python
python
syntax
python3
python2
comparison
+
–
0
0 votes
1
1 answer
1.8k
1.8k views
Could you please explain math symbols behind Machine Learning equations?
asked
May 18, 2019
Machine Learning
math
machine-learning
symbol
+
–
1
1 vote
1
1 answer
641
641 views
What are the best resources you know for learning web programming?
asked
May 13, 2019
Web Development
resources
programming
web-programming
+
–
0
0 votes
1
1 answer
1.5k
1.5k views
How to convert equations in documents to LaTeX?
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?
asked
Apr 12, 2019
LaTeX
latex
math
ocr
+
–
3
3 votes
1
answers
1 answer
7.4k
7.4k views
How to update weights in backpropagation algorithm (a numerical example)?
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...
asked
Apr 11, 2019
Machine Learning
machine-learning
deep-learning
backpropagation
back-propagation
gradient-decent
ml-exercise
ml-final
ele888-final
+
–
0
0 votes
1
answers
1 answer
1.8k
1.8k views
How to calculate univariate linear regression?
For the following dataset, calculate the regression equation $\hat{y} = ax+b$datasetxy1423501075161002615036200
asked
Apr 11, 2019
Machine Learning
machine-learning
linear-regression
ml-exercise
+
–
3
3 votes
2
answers
2 answers
8.4k
8.4k views
How to calculate Softmax Regression probabilities in this example?
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...
asked
Apr 4, 2019
Machine Learning
machine-learning
softmax-regression
softmax
ml-exercise
ml-midterm
ml-final
ele888-midterm
ele888-final
ai-final
+
–
3
3 votes
1
answers
1 answer
9.4k
9.4k views
How to calculate feed-forward (forward-propagation) in neural network?
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...
asked
Apr 4, 2019
Machine Learning
machine-learning
feed-forward
forward-propagation
deep-learning
ml-exercise
ml-final
ele888-midterm
ele888-final
ml-midterm
+
–
2
2 votes
1
answers
1 answer
6.6k
6.6k views
How to update weights using gradient decent algorithm?
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...
asked
Mar 28, 2019
Machine Learning
machine-learning
deep-learning
gradient-decent
backpropagation
cost-function
linear-regression
ml-exercise
ele888-final
+
–
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