Dear Eric Rimbey and Rohit Namjoshi and others,

Herewith the data, namely the file: ct1_v1a30.csv

But when I read the comments from you, I thought there is error with the arrow in the file ct1v1a30.csv. So I changed that, which can be seen in a new file: ct1v1a30n.csv But despite the change, I can't manage to apply the 'Predict'. I hope you all can help me.

Thanks in advance Roy

Attachments:

ct1_v1a30.csv

ct1_v1a30n.csv

Look at

InputForm@daa1

Looks like a List of String. Need to be converted to a List of Rule. One way to do that

Rule @@@ ToExpression@daa1

Try passing that to Predict.

I suspect that your Import resulted in textual \[RightArrow] instead of actual Rule. But we'd need to see the actual data. Can you post a sample of the file?

I wanted to see the original data in F:\\Eigen\\T06Sep2022\\ct1_v1a30.csv so that I didn't need to try to reverse engineer what's going on here. Once you import it into Mathematica, you're getting RightArrow instead of Rule. I don't have an explanation off of the top of my head, but if I saw the original data I might be able to figure it out. To see what I'm saying, evaluate this:

FullForm[daa1]

You'll see something like

List[RightArrow[1,5.`],RightArrow[2,8.`], ... ,RightArrow[30,282.`]]

What you want is something like this:

List[Rule[1,5.`],Rule[2,8.`],Rule[3,20.`], ... ,Rule[29,264.`],Rule[30,282.`]]

The syntax for Predict is

{
  example_1 -> value_1,
  example_2 -> value_2,
  ...
}

It is not ovbious to say that from your error message but it seems you are passing a flat list of values. What is supposed to be the input and what the training output?