Challenge #424: Optimize the Energy of Your Playlist

[RashedDS]

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[AkimasaKajitani]

@Brando 

Did you install the R tool? (RInstaller.exe)  The predictive tools and prescriptive tools like Optimization tool are needed for it.

[RWvanLeeuwen]

perfect! now let's do some kNN to order the listed songs next!

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[olga_strubbe]

This was a neat challenge, thank you, @AkimasaKajitani!

It was my first time using the Optimize tool.  Depending on how you structure your data, the Optimize output varies. 

I used 'Unique' tool to exclude duplicates of song names/energy and duration and the output was very close to the answer provided.  When I slightly updated 'Unique' tool to exclude duplicates of song name only regardless of energy and duration, the output was slightly different.  I found out the song names were the same in some instances, but energy and duration different - not sure if this was intended :)

Here is my solution attached + spoiler:

My workflow:

My output playlist: slightly different

Total Popularity/Objective: same as solution provided

Playlist duration: a few  decimals off - very close :)

[braveraj]

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I'm getting some different results but close enough.

[fesrimo]

Same as the other, I am having different results than others, because one same song, can have multiples Songs ID, Popularity Number and Energy number.

My results here:

• Number of Songs: 21
• Play list Timing: 3599.21s
• Objective Value:  1264

My assumptions for this challenge were:

• Popularity number (High Value, more popular)
• Songs name (Unique value – Even they have multiples Ids I am only consider as one)

[Ginu_Sunny]

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[plozbin]

Very tough challenge. It took me a lot of attempts to be able to get the inputs and configuration for the Optimization tool right, but now I'll be ready for the next time I encounter it!

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[Reesetrain2]

All,

First, I was upset that Limp Bizkit's Rollin (Urban Assault Vehicle) didn't make the list,

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However, I was able to get the Optimization Engine to take 117 records before it started to take way too long to run as I would like to know if others had the same experience.

 

[tammybrown_tds]

I don't get this....at all.  I gave up and will wait for the posted solution.