পদ্ধতির তুলনা করুন

	সামগ্রিক সরঞ্জাম কার্যকারিতা (OEE)	Six Sigma DMAIC	ভ্যালু স্ট্রিম ম্যাপিং (VSM)
ক্ষেত্র	মান ব্যবস্থাপনা	মান ব্যবস্থাপনা	মান ব্যবস্থাপনা
পরিবার	Process / pipeline	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1988	2014	1999
প্রবর্তক	Seiichi Nakajima	Motorola; Pyzdek & Keller	Mike Rother & John Shook
ধরন	Multiplicative KPI framework	Structured process improvement methodology	Visual process analysis tool
মৌলিক উৎস	Nakajima, S. (1988). Introduction to TPM: Total Productive Maintenance. Productivity Press. ISBN: 978-0-915299-23-2	Pyzdek, T., & Keller, P. (2014). The Six Sigma Handbook (4th ed.). McGraw-Hill. ISBN: 978-0-07-184053-9	Rother, M., & Shook, J. (1999). Learning to See: Value Stream Mapping to Add Value and Eliminate Muda. Lean Enterprise Institute. ISBN: 978-0-9667843-0-5
অপর নাম	OEE, Equipment Effectiveness Index, Machine Effectiveness Ratio, Toplam Ekipman Etkinliği	DMAIC Framework, Six Sigma Process Improvement Cycle, Define-Measure-Analyze-Improve-Control, Altı Sigma DMAIC	VSM, Material and Information Flow Mapping, Lean Flow Mapping, Değer Akış Haritalama
সম্পর্কিত	3	3	3
সারসংক্ষেপ	Overall Equipment Effectiveness (OEE) is a composite key performance indicator that quantifies how effectively a manufacturing operation uses its equipment relative to its full potential. Developed by Seiichi Nakajima in 1988 as a cornerstone metric of Total Productive Maintenance (TPM), OEE multiplies three loss factors—Availability, Performance, and Quality—to yield a single percentage that benchmarks actual productive output against ideal output.	Six Sigma DMAIC is a data-driven, five-phase process improvement methodology — Define, Measure, Analyze, Improve, and Control — used to reduce defects and process variation to fewer than 3.4 defects per million opportunities. Originating at Motorola in the 1980s and systematized by practitioners including Pyzdek and Keller, it is widely adopted in manufacturing, healthcare, finance, and service industries seeking sustained quality gains.	Value Stream Mapping (VSM) is a lean management technique used to visualize, analyze, and improve the flow of materials and information required to bring a product or service from raw input to customer delivery. Introduced by Mike Rother and John Shook in their 1999 workbook Learning to See, VSM draws on the Toyota Production System tradition to expose waste, delays, and non-value-adding activities across the entire production value stream.