Simulation with Arena

More documents

Recommendations

Info

Fitting Distributions via the Arena Input Analyzer (cont’d.) • Fitting = deciding on distribution form (exponential, gamma, empirical, etc.) and estimating its parameters – Several different methods (Maximum likelihood, moment matching, least squares, …) – Assess goodness of fit via hypothesis tests • H 0 : fitted distribution adequately represents the data • Get p value for test (small = poor fit) • Fitted “theoretical” vs. empirical distribution • Continuous vs. discrete data, distribution • “Best” fit from among several distributions Simulation with Arena — Chapter 5 — Modeling Basic Operations and Inputs 5 - 44
Data Files for the Input Analyzer • Create the data file (editor, word processor, spreadsheet, ...) – Must be plain ASCII text (save as text or export) – Data values separated by white space (blanks, tabs, linefeeds) – Otherwise free format • Open data file from within Input Analyzer – File/New menu or – File/Data File/Use Existing … menu or – Get histogram, basic summary of data – To see data file: Window/Input Data menu • Can generate “fake” data file to play around – File/Data File/Generate New … menu Simulation with Arena — Chapter 5 — Modeling Basic Operations and Inputs 5 - 45
Page 1 and 2: Chapter 5 Modeling Basic Operations
Page 3 and 4: What We’ll Do ... (cont’d.) •
Page 5 and 6: Part A • Interarrivals: expo (5)
Page 7 and 8: Run Conditions, Output, Animation
Page 9 and 10: Stations • Up to now: no (zero) t
Page 11 and 12: Roughing Out the Model • New mode
Page 13 and 14: Part B Arrive Module • Same as fo
Page 15 and 16: • Main dialog Sealer Inspect Modu
Page 17 and 18: Depart Modules • Three separate m
Page 19 and 20: Animated Routes • Paths to displa
Page 21 and 22: Viewing the Results • When done,
Page 23 and 24: Schedules • Vary Capacity (number
Page 25 and 26: Ignore/Wait/Preempt duration of sch
Page 27 and 28: Resource Failures • All units of
Page 29 and 30: The Statistics Module • Five diff
Page 31 and 32: The Output Analyzer • Separate ap
Page 33 and 34: Enhancing the Animation (Model 5.3)
Page 35 and 36: Changing the Entity Pictures • Di
Page 37 and 38: Changing Resource Pictures • Real
Page 39 and 40: Input Analysis: Specifying Model Pa
Page 41 and 42: Collecting Data • Generally hard,
Page 43: Fitting Distributions via the Arena
Page 47 and 48: The Fit Menu (cont’d.) • Fit al
Page 49 and 50: Some Issues in Fitting Input Distri
Page 51 and 52: Nonstationary Arrival Processes •
Page 53: Multivariate and Correlated Input D

Simulation with Arena

Create successful ePaper yourself

Delete template?

Save as template?