Set labels by % is inaccurate

Question

question

rheem asked Dec 10, '23 rheem commented Dec 15, '23

Set labels by % is inaccurate

Set labels by %.fsm Trying to set labels by percentage and get the exact percentage (80% & 20%) but never get it. Also, the throughput chart has 3 types instead of 2 , I don't know why. I was trying many times but never succeed. Please see attached

Any help or modify the model is appreciated.

Software Version:

FlexSim 23.2.2

set label set percentage

set-labels-by.fsm (72.8 KiB)

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Joerg Vogel commented · Dec 10, 2023 at 06:37 AM

@rheem, it is a desired feature to get a deviation if you use a statistical distribution. You get nearer to a ratio for millions of events.

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rheem Joerg Vogel commented · Dec 10, 2023 at 02:39 PM

i was trying to change it but unable to get it work. Could you please modify the file and send it back to me if that possible. I will use it as reference for my project . Please see attached

Set labels by %.fsm

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set-labels-by.fsm (72.8 KiB)

Joerg Vogel rheem commented · Dec 10, 2023 at 03:38 PM

@rheem, this is not my intention. Please describe, what your problem is! Maybe someone is able to help.

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Answer 1 · 2023-12-15T22:03:24Z

Phil BoBo answered Dec 15, '23 rheem commented Dec 15, '23

Your Station19 and Station7 objects have an On Process Finish trigger that sets the item's Type label to a random number 1-3.

So any items that go to those stations have their type overridden as a random value uniformly distributed between 1 and 3.

Remove those Set Label triggers to fix your problem.

1702677726303.png (1.2 MiB)

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rheem commented · Dec 15, 2023 at 11:28 PM

Good catch. Thank you Phil

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Answer 2 · 2023-12-15T22:01:21Z

Jason Lightfoot answered Dec 15, '23 rheem commented Dec 15, '23

You can only get an exact percentage that matches 80/20 split in multiples of 5 items. One way of making that happen for as few items as possible is to create a repeating schedule like this:

The reason you have 3 types is that Station7 and 19 are relabelling items from a uniform distribution:

Changed model attached.

set-labels-byPercent_jl.fsm

1702677427834.png (7.6 KiB)

1702677500619.png (10.2 KiB)

set-labels-bypercent-jl.fsm (72.3 KiB)

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