how to load an Empirical distribution?

Question

question

yoni A asked Apr 16 2018 at 6:40 PM yoni A commented Apr 18 2018 at 6:28 PM

how to load an Empirical distribution?

after collecting sufficient cycle time data of a process, I use experfit to evaluate and determine the best distribution to fit the data, the results says it is indeterminate, does that mean that there is no distribution that explains the data collected?

the software suggest you use an empirical distribution, to load into the processor's process time, how do I load the results of the empirical distribution into the processor?

Software Version:

FlexSim 18.1.0

distributions

· 8

Jeff Nordgren commented · Apr 16 2018 at 8:03 PM

@yoni A

You will probably need to send in your model or a sample model of the problems so that we can take a look to see what is happening within the model. If the data returns an indeterminate response from OptQuest then maybe the parameters were not entered in the right way? Because it seems to me there should always be some kind of distribution for any set of input, unless the input in incomplete or not entered correctly.

0 ·

yoni A Jeff Nordgren commented · Apr 18 2018 at 6:28 PM

Jeff see attached file @Jeff Nordgren, under the title of the question

0 ·

yoni A commented · Apr 17 2018 at 12:30 PM

@Jeff Nordgren

see attached file, I couldn't attache dthe expert fit file since it is not accepted

statistical-distributions.xlsx

0 ·

statistical-distributions.xlsx (222.2 KiB)

Ben Wilson ♦♦ yoni A commented · Apr 17 2018 at 3:47 PM

@yoni A,

Sorry you couldn't attach the ExpertFit file.

I have enabled .efp file uploads. If your file extension was something else, let me know.

0 ·

yoni A Ben Wilson ♦♦ commented · Apr 17 2018 at 4:11 PM

project-2-real-numbers.efp

@Ben Wilson

see experfit file

0 ·

project-2-real-numbers.efp (53.2 KiB)

Show more comments

yoni A commented · Apr 17 2018 at 12:33 PM

@Jeff Nordgren

manual-cycle-times.xlsx

see raw data

0 ·

manual-cycle-times.xlsx (15.4 KiB)

______

Cookie preferences

Your privacy is important to us and so is an optimal experience. To help us customize information and build applications, we collect data about your use of this site.

May we collect and use your data?

Learn more about the Third Party Services we use and our Privacy Statement.

Strictly necessary – required for our site to work and to provide services to you

These cookies allow us to record your preferences or login information, respond to your requests or fulfill items in your shopping cart.

YES

Improve your experience – allows us to show you what is relevant to you

These cookies enable us to provide enhanced functionality and personalization. They may be set by us or by third party providers whose services we use to deliver information and experiences tailored to you. If you do not allow these cookies, some or all of these services may not be available for you.

YES

NO

Customize your advertising – permits us to offer targeted advertising to you

These cookies collect data about you based on your activities and interests in order to show you relevant ads and to track effectiveness. By collecting this data, the ads you see will be more tailored to your interests. If you do not allow these cookies, you will experience less targeted advertising.

YES

NO

Are you sure you want a less customized experience?

We can access your data only if you select "yes" for the categories on the previous screen. This lets us tailor our marketing so that it's more relevant for you. You can change your settings at any time by visiting our privacy statement

Your experience. Your choice.

We care about your privacy. The data we collect helps us understand how you use our products, what information you might be interested in, and what we can improve to make your engagement with Autodesk more rewarding.

May we collect and use your data to tailor your experience?

Explore the benefits of a customized experience by managing your privacy settings for this site or visit our Privacy Statement to learn more about your options.

Answer 1 · 2018-04-16T22:29:36Z

Jordan Johnson answered Apr 16 2018 at 10:29 PM Jeff Nordgren edited Apr 17 2018 at 9:06 PM

@yoni A, I am not too familiar with ExpertFit specifically, so I don't know when it generates that error. However, I am familiar with curve fitting in general. Basically, you find the best fit from a given distribution, and then give it a "goodness of fit" score. My guess is that if that score is not good enough for any distribution, ExpertFit will not recommend a distribution to fit the data. If you make a histogram of the data, are there multiple modes? Most distributions that ExpertFit attempts to fit can only handle a single mode.

question