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1 1 vote
2 answers 2 answers
1.1k
1.1k views
How do i find the inverse of the function?
If $h(x) =4x+5$, how do i find h inverse of x?
1 1 vote
2 answers 2 answers
725
725 views
How to calculate $g[h(3)]$ if $g(x)= 2x+3$ and $h(x) =4x+5$ ?
Need help solving this question
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. ...
2 2 votes
1 1 answer
1.5k
1.5k views
What are the best resources for studying SQL?
I am wondering if anyone can suggest the best resources for studying SQL?
0 0 votes
1 1 answer
513
513 views
Can anyone please solve Q7 pg 329 in Induction?
3 3 votes
1 answers 1 answer
10.8k
10.8k views
How to calculate Softmax Regression probabilities?
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...
1 1 vote
1 1 answer
1.2k
1.2k views
Best algorithm for table reservation
What kind of algorithm would best for following problem.I try to forecast reservation of different kind of tables. Let's say I have 100 different tables, which are reserv...
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...
1 1 vote
1 1 answer
5.4k
5.4k views
What are python modules? Name some commonly used built-in modules in Python?
1 1 vote
0 0 answers
410
410 views
Individual and group relative strength in a fixed pool of players: How to approach the problem?
I apologize in advance if my question sounds too basic to be worthy of anyone's time, but statistics are not part of my curriculum.I am developing a proof of concept of a...
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...
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.
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...
1 1 vote
1 answers 1 answer
15.2k
15.2k views
How to update "conda" version itself?
I can update all the libraries and packages on Anaconda using the following command:conda update all But it does not update conda itself. Is there any special command fo...
1 1 vote
0 0 answers
7.8k
7.8k views
Looking for guidance on whether I have the necessary data to answer a Regression question
Hi everyone.I'm currently working on my final project for a Data Science degree and after a month of literature review, exploratory analysis and model testing, I'm not su...
1 1 vote
1 1 answer
13.9k
13.9k views
What is the difference between univariate and multivariate analysis?
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...
1 1 vote
0 0 answers
446
446 views
Data manipulation problem study resources
A colleague of mine is studying for tech roles, and they're asked to solve a consistent type of problem during the phone screenings: practicing manipulating data (sets, h...
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...
1 1 vote
1 1 answer
1.8k
1.8k views
How to create def for cross_val_score related to linear regression problem?
def cross_val_score(estimator,X,y,scoring,cv): scores=cross_val_score scores_rmse=np.sqrt(-scores) print('Scores: ',scores_rmse) print("Mean:", scores_rms...
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