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Showing results 1 to 25 of 201
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Search: Posts Made By: Relmiw
Forum: Exam PA: Predictive Analytics 12-12-2019, 11:13 PM
Replies: 663
Views: 131,032
Posted By Relmiw
It was especially problematic because I could no...

It was especially problematic because I could no longer write in R. I'd have to copy paste to get any new code going
Forum: Exam PA: Predictive Analytics 12-12-2019, 10:22 PM
Replies: 663
Views: 131,032
Posted By Relmiw
I also had technical issues. The keyboard...

I also had technical issues. The keyboard stopped working mid exam. Not entirely, just certain rarely (/s) used keys like

<
:
$
"

They would give some funky characters that aren't normally...
Forum: Exam PA: Predictive Analytics 12-12-2019, 10:15 PM
Replies: 663
Views: 131,032
Posted By Relmiw
0? JFC. Sounds like your files didn't upload...

0? JFC. Sounds like your files didn't upload properly
Forum: Exam PA: Predictive Analytics 12-11-2019, 08:39 PM
Replies: 20
Views: 1,145
Posted By Relmiw
I haven't had time to go through the June exam...

I haven't had time to go through the June exam other than to read the solution and skim parts of the RMD. Maybe someone else can give you some insight?

I see where you're coming from. Thanks. ...
Forum: Exam PA: Predictive Analytics 12-11-2019, 07:28 PM
Replies: 20
Views: 1,145
Posted By Relmiw
It is disheartening that there is not a consensus...

It is disheartening that there is not a consensus on this. It seems like every topic I look into opens a new can of worms that I'm unfamiliar with. Maybe you're right. I've taken enough SOA tests...
Forum: Exam PA: Predictive Analytics 12-11-2019, 03:41 PM
Replies: 3
Views: 468
Posted By Relmiw
I've been really hoping someone answers your...

I've been really hoping someone answers your question, windows7forever!
Forum: Exam PA: Predictive Analytics 12-11-2019, 02:48 PM
Replies: 663
Views: 131,032
Posted By Relmiw
I've used one to confirm that the...

I've used one to confirm that the confusionMatrix() didn't get Specificty & Sensitivity flipped.

Though you're sitting in front of two of the world's greatest calculators between R and Excel, so I...
Forum: Exam PA: Predictive Analytics 12-11-2019, 02:37 PM
Replies: 20
Views: 1,145
Posted By Relmiw
Ok, thank you. Interesting that I have no memory...

Ok, thank you. Interesting that I have no memory of this from the modules

I believe the code to do so is below, for anyone in a similar boat:


Where:
- "f" is the Factor variable
- "df"...
Forum: Exam PA: Predictive Analytics 12-11-2019, 02:27 PM
Replies: 1
Views: 360
Posted By Relmiw
Listing Changes Made to Code

Do we need to list changes made to the SOA-provided code? Or should we?

My plan was to comment out the originally-provided SOA code and have the final version of what I use underneath it.
...
Forum: Exam PA: Predictive Analytics 12-11-2019, 02:03 PM
Replies: 20
Views: 1,145
Posted By Relmiw
Is the baseline level whatever level appears...

Is the baseline level whatever level appears first when using table()? Suppose I have a Factor with Levels "HS", "BS", "MS". It's not obvious to me that there even exists a baseline, and I'd likely...
Forum: Exam PA: Predictive Analytics 12-11-2019, 01:55 PM
Replies: 15
Views: 877
Posted By Relmiw
Ok, that makes a lot of sense. Thank you. If we...

Ok, that makes a lot of sense. Thank you. If we are only applying certain loading factors to the PCs then for sure I don't see the need to drop the unused predictors. In that case our PCs are not...
Forum: Exam PA: Predictive Analytics 12-11-2019, 01:32 PM
Replies: 20
Views: 1,145
Posted By Relmiw
What does "relevel the variable" mean? ...

What does "relevel the variable" mean?


That's exactly what I'm thinking.
Forum: Exam PA: Predictive Analytics 12-11-2019, 12:52 PM
Replies: 20
Views: 1,145
Posted By Relmiw
Disclaimer: I've only just finished the...

Disclaimer: I've only just finished the material.

I appreciate the sentiment behind this question. I suspect it may be somewhat subjective on where to draw the line on this. For example, it is...
Forum: Exam PA: Predictive Analytics 12-11-2019, 12:46 PM
Replies: 11
Views: 1,204
Posted By Relmiw
I think the fact that we are prompted with other...

I think the fact that we are prompted with other tasks makes writing the ES easier. I read somewhere that this can be thought of as a summary of each other task, which removes some of the burden of...
Forum: Exam PA: Predictive Analytics 12-11-2019, 11:08 AM
Replies: 6
Views: 485
Posted By Relmiw
Yeah, sounds like a not-totally-garbage idea, but...

Yeah, sounds like a not-totally-garbage idea, but I suspect it has some big flaws vs. something like Lasso based on the fact that I've not seen it mentioned in any of the material.
Forum: Exam PA: Predictive Analytics 12-11-2019, 11:03 AM
Replies: 15
Views: 877
Posted By Relmiw
If I have data in F and create a new data field...

If I have data in F and create a new data field based on that information but in C, then I'd want to remove the F field from my model rather than include both. No?


I do not. My entire...
Forum: Exam PA: Predictive Analytics 12-11-2019, 10:58 AM
Replies: 5
Views: 705
Posted By Relmiw
I see it. 4 videos over about 2 hours. I'll try...

I see it. 4 videos over about 2 hours. I'll try to watch parts today; thank you
Forum: Exam PA: Predictive Analytics 12-11-2019, 10:28 AM
Replies: 6
Views: 485
Posted By Relmiw
That is an interesting idea. I've only just...

That is an interesting idea. I've only just finished the material and have not yet run across this.

I am concerned that while one of the strengths of the decision tree methods is to capture...
Forum: Exam PA: Predictive Analytics 12-11-2019, 12:37 AM
Replies: 6
Views: 658
Posted By Relmiw
Variance of zero? Aren't we talking about the...

Variance of zero? Aren't we talking about the mean and variance of the target variable, which is a list of numbers? And we're considering the possibility where it is Poisson distributed, so that...
Forum: Exam PA: Predictive Analytics 12-10-2019, 10:11 PM
Replies: 6
Views: 658
Posted By Relmiw
How much less than variance? What if the mean is...

How much less than variance? What if the mean is 1000 and the variance is 300? 900? 990? Are you looking at a sample mean confidence interval?
Forum: Exam PA: Predictive Analytics 12-10-2019, 10:06 PM
Replies: 4
Views: 430
Posted By Relmiw
Yes, thank you. Updated in post. It should have...

Yes, thank you. Updated in post. It should have read "If it seems like variance is significantly higher than mean* then it seems like switching to Quasi Poisson would be a good fit"
Forum: Exam PA: Predictive Analytics 12-10-2019, 10:04 PM
Replies: 15
Views: 877
Posted By Relmiw
1. I have not previously had any mental...

1. I have not previously had any mental significance to the threshold at which predictor a majority of variance is explained (disclaimer: I have not reviewed sample solutions very much and only...
Forum: Exam PA: Predictive Analytics 12-10-2019, 09:30 PM
Replies: 15
Views: 877
Posted By Relmiw
Yeah, this is what I'm thinking too

Yeah, this is what I'm thinking too
Forum: Exam PA: Predictive Analytics 12-10-2019, 09:30 PM
Replies: 15
Views: 877
Posted By Relmiw
Your first sentence, I am on board. Thank you. ...

Your first sentence, I am on board. Thank you. Your second sentence, hmm, I don't see how that's super relevant but noted.


A bit of this goes over my head. "Non-invertible", "general...
Forum: Exam PA: Predictive Analytics 12-10-2019, 09:18 PM
Replies: 7
Views: 827
Posted By Relmiw
Ok, so looking at #2. For modeling the number of...

Ok, so looking at #2. For modeling the number of votes one candidate is going to receive, my first thought is that this is discrete technically, but it might as well be continuous and either...
Showing results 1 to 25 of 201

 

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