Internal Due Date Assignment in a Wafer Fabrication Factory by an Effective Fuzzy-Neural Approach
نویسندگان
چکیده
منابع مشابه
A Collaborative Fuzzy-neural Approach for Internal Due Date Assignment in a Wafer Fabrication Plant
Though many of the previous studies have been devoted to internal due date assignment in a wafer fabrication factory (wafer fab), very few among them considered the allowance added to a completion time forecast. In this way, the probability of on-time delivery is only about 50%. Methods based on confidence intervals generate completion time forecasts with very wide ranges and are not practical....
متن کاملA Fuzzy-neural Dbd Approach for Job Scheduling in a Wafer Fabrication Factory
Job scheduling is an important but difficult task to wafer fabrication factories. To further improve the performance of job scheduling in a wafer fabrication factory, a fuzzy-neural dynamic-bottleneck-detection (DBD) approach is proposed in this study. The fuzzy-neural DBD approach is modified from the traditional DBD approach after incorporating some major changes. First, taking into account t...
متن کاملDue-date performance improvement using TOC's aggregated time buffer method at a wafer fabrication factory
Due-date performance is one of the most important production indexes for success utilized by wafer fabrication factories. Traditionally, the industry sets a specific due-date tightness level and a dispatching rule based on the total processing time, the production capacity, pre-defined order release criteria and historical data, to ensure deliveries are made on-time. However, such policies typi...
متن کاملA Fuzzy Collaborative Forecasting Approach for WIP Level Estimation in a Wafer Fabrication Factory
Forecasting the work-in-process (WIP) level is very important for the control of factory. However, the uncertainty in the WIP level is not easy to deal with. To solve this problem, a fuzzy collaborative forecasting approach is proposed. And also we show the effectiveness of the proposed methodology with a case study.
متن کاملAn Empirical Bayes Approach to Due Date Assignment
We consider a model in which there are m products and for each i=1,...,m, there are ni observations of the service times associated with the th i product. Assuming the service times associated with the th i product follow an exponential distribution with parameter i θ , and i θ 's are independent random variables with a common gamma distribution, with unknown parameters α and β , we provide two...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Applied Mathematics
سال: 2013
ISSN: 1110-757X,1687-0042
DOI: 10.1155/2013/979862