SAS Optimization, and SAS Simulation Studio

turn on suggestions

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

Find a Community

Topic Options

- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

02-20-2017 05:53 AM

Dear Sir/Madam,

I am using proc MIRP for modeling a supply chain network. I can see in Proc IRP there is lotsize keyword in replenishment statement but not in Proc MIRP.

How can I model lotsize in MIRP?

How can I model order cycle in MIRP?

Thanking in advance.

Lokendra

Accepted Solutions

Solution

03-03-2017
05:06 AM

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Posted in reply to lokendra_devangan_corecompete_com

02-20-2017 11:53 AM

Hello Lokendra,

For modeling the lotsize, you can use the variable of BATCHSIZE in the NODEDATA=dataset.

For the order cycle, you can use the variable of PBR in the NODEDATA=dataset. PBR specifies the number of periods between

two replenishment orders. Its default value is 1.

Thanks,

KDuck

All Replies

Solution

03-03-2017
05:06 AM

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Posted in reply to lokendra_devangan_corecompete_com

02-20-2017 11:53 AM

Hello Lokendra,

For modeling the lotsize, you can use the variable of BATCHSIZE in the NODEDATA=dataset.

For the order cycle, you can use the variable of PBR in the NODEDATA=dataset. PBR specifies the number of periods between

two replenishment orders. Its default value is 1.

Thanks,

KDuck

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Posted in reply to KDuck

03-03-2017 05:11 AM

Thanks.

Whenever I am using OBJECTIVE=POLICY_ORDER_KPI and using Horizon=100 in the output I get different values for reorder level and OUTL. I intermittent demand model and have variance and mean but want to assume stationary demand. How to model this. This will be very helpful. When I do not use HOrizon option I get same reorder point and OUTL for 12 periods.

Also when we use OBJECTIVE=EVALISL I do not get reorder level in the output. How can I get. I am running this for different service level and want see the KPI change.

thanks in advance

Lokendra

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Posted in reply to lokendra_devangan_corecompete_com

03-08-2017 11:34 AM

If you have run with the specified inventory, it is expected to get different values of reorder level. And the default value of Horizon option is 12.

To obtain the identical reorder level for the stationary demand, you may try to run the following steps:

- Do the policy optimization by OBJECTIVE=OPTPOLICY without inventory data
- Set the inventory data based on this policy
- Estimate KPIs by OBJECTIVE=PREDICTKPI

If you still have some questions or issues, please provide us your code and data sets.

For your second question,

since SS policy is used for OBJECTIVE=EVALISL, you can simply compute the reorder level as (order upto level – 1).

Thanks,

KDuck

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Posted in reply to KDuck

03-10-2017 03:02 AM

Thank You