Data Science Questions, Problems & Solutions : TransWikia.com ~ Page 61

Fitting multiple line

Short version:How can I find a function that maps X to Y when data looks like this. Note:For a...

Asked on 08/04/2021 by mmrbulbul

1 answer

Row total not being calculated correctly in Matrix visualisation [Power BI]

I have the following measures:StockSales CY = CALCULATE(COUNT('ds SalesRetail'[StockID]),ALLSELECTED('ds SalesRetail'))Billed Quantity CY = CALCULATE(SUM(AQA0ZSPM________PRICE_REBAT_SQ_View[Billed Quantity]))Pen. Rate CY = DIVIDE(AQA0ZSPM________PRICE_REBAT_SQ_View[Billed Quantity CY],'ds SalesRetail'[StockSales CY])I would like my "Row subtotal" to...

Asked on 08/04/2021 by poiuy9876

0 answer

How to build a database of image data for machine learning?

I want to build a database of image data for machine learning. But how should this be done? I'm assuming people don't just dump all of their image data into...

Asked on 08/03/2021

1 answer

Deep Learning Classification Model for data with time dimension

I know it might be a generic question but I would still appreciate some feedback. So I have a dataset with 4 dimensions (time, x, y, color). Where I have...

Asked on 08/03/2021 by Chris_007

1 answer

mean and variance of a dataset

I have a simple question. Please see the below screenshot : It is from a midterm exam from a university...

Asked on 08/03/2021

1 answer

How to define the input channel of a CNN model in Pytorch?

In pytorch, we use:nn.conv2d(input_channel, output_channel, kernel_size)in order to define the convolutional layers. I understand that if the input is an image which has size $text{width} times text{height} times...

Asked on 08/03/2021

1 answer

Linear regression to find differences between model performances

For one of my projects I needed to create classification models for each of many products. In order to see which classifier performs best, I created one SVM, RandomForest and...

Asked on 08/03/2021 by mkoeck

0 answer

In which cases shouldn't we drop the first level of categorical variables?

Beginner in machine learning, I'm looking into the one-hot encoding concept. Unlike in statistics when you always want to drop the first level to have k-1 dummies (as discussed ...

Asked on 08/03/2021

2 answer

Gradient computation

I am beginner in data-science. I am trying to understand this PyTorch code for gradient computation using custom autograd function:class MyReLU(torch.autograd.Function):@staticmethoddef forward(ctx, x): ctx.save_for_backward(x) ...

Asked on 08/03/2021 by a n

1 answer

Using user defined function in groupby

I am trying to use the groupby functionality in order to do the following given this example dataframe:dates = ['2020-03-01','2020-03-01','2020-03-01','2020-03-01','2020-03-01', '2020-03-10','2020-03-10','2020-03-10','2020-03-10','2020-03-10']values =...

Asked on 08/03/2021

1 answer

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