Bottoms Up Parametrics And Ever Increasing Details

Our SEER for Manufacturing (formally SEER-DFM) and now abbreviated SEER-MFG, uses what we call bottoms up parametrics.. Bottoms up parametrics differ from general parametric estimation modeling in a few respects:

1. Bottoms Up Parametrics Don’t Necessarily Minimize the Number of Inputs
2. Bottoms Up Parametrics ask for detailed levels that traditional parametric estimating would not.

I was briefed on a new tooling analysis method that actually allows the user to specify specific tools if they want to. Way more detail than a traditional parametric model. But exactly what the bottoms up people desire.

Related posts:

1. Galorath Vision of Parametrics Over The Next 20 Years (Published 2004) We have seen great strides in the acceptance of parametric modeling such as SEER over the past 5 years.  I...
2. Pioneers of Parametrics (MIT) Paper Available Interesting (at least to people like me) paper on the “Pioneers of Parametrics” By Ricardo Valerdi of MIT.  Kind fo...
3. Software Testing Effort Estimation Bottoms-Up Article There is a decent article on manually decomposing testing and estimating bottoms up. While it would be much more accurate to use...
4. Barriers to Adopting Estimation Technology & Applications A reader requested I chime in on The biggest barriers I see to adopting estimation technologies and tools.  So here...
5. 90% of Companies Surveyed Increasing Software as a Service (SAAS) From an article on SAAS on ITWorld Nine out of ten companies surveyed  plan to increase SaaS in the next year...

Comments

One Response to “Bottoms Up Parametrics And Ever Increasing Details”

1. Peter Korda on July 7th, 2008 9:24 am

   We are noticing several parametric hardware cost estimates prepared to such a detailed breakdown, that it negates the purpose of parametric estimates. The detail is equal to a bottoms up estimate. It looks like the parametric estimating model’s output is used to show the “boss” the validity of the estimate. This practice is missing the power and value of parametric cost estimating, where a few cognizant parameters yield a credible estimate. It is true that it takes greater engineering knowledge of the item to be estimated at higher levels of breakdown.

Leave a Reply

Name (required)

Email Address(required)

Website

• Subscribe to this Blog

  Enter your email address:

• Twitter

  Follow Dan Galorath on Twitter.

• Galorath Library

  Galorath maintains a rich library of webinars, presentations, whitepapers, and demos. Register to read our entire library.

• Recent Posts

  • Galorath / Reifer Team To Provide Large Project Success Via Risk Assessments
  • The 6 Characteristics of Effective Metrics
  • FPGA Sticker Shock
  • 2012 Defense Strategic Guidance Summary
  • Cost Readiness Level (CRL) Establishing Cost Risk Based On Engineering Decisions
  • APMP Cost Task Force Industry / Government Questions & Responses
  • New SEER Labor Rate Calculator: A Leap Forward in “Should Cost” & “Will Cost”
  • Frank Vogelezang Pricing Vs Costing & Proof That IT Systems Can Be Estimated
  • APMP Cost Taskforce November 2011: Helping Calm the Storm of Budget Cuts Via Cost Analysis
  • CMMI and SEER Applicability: Estimation, Planning & Control Processes and SEER Integration

• Categories

  • APMP
  • business value
  • CEO
  • Conferences
  • Cost Estimating
  • costiq
  • Design for Manufacturing Estimating
  • earned value
  • Estimating
  • Estimation Process
  • General
  • Hardware Electronics Systems Estimating
  • IC Estimating
  • IT Estimating
  • Lists
  • measurement
  • Presentations
  • Project Management
  • Risk
  • Software Estimating
  • Software Sizing
  • Systems Estimating
  • Systems of Systems Estimating
  • Ten Step Project Estimation Process
  • Thoughts

• Recent Comments

  • Real Estate Agent on Evaluating the Benefits of Service Oriented Architecture: SEER in support of SOA Implementation Decisions
  • Henry H on Software Project Failure Costs Billions.. Better Estimation & Planning Can Help
  • Dean on Packaged Applications – The Hidden Cost of Snake Oil
  • Lee Fischman on FPGA Sticker Shock
  • Implementing ERP more effectively – Part 3 « The Manticore blog on Software Project Failure Costs Billions.. Better Estimation & Planning Can Help

• Galorath Company

  • Galorath International
  • Galorath.com

• SEER sites

  • SEER for Hardware, Electronics & Systems Project Management
  • SEER for IT – IT Project Cost Estimation
  • SEER for Manufacturing – Project Estimation
  • SEER for Software – Software Estimation

• Project Prediction Infographic

  > click to view <

• Meta

  • Log in
  • Entries RSS
  • Comments RSS
  • WordPress.org