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DMAIC for Software Quality

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  • #42814

    Ranjan
    Participant

    Hi,
    We are using a Software Quality process circled around the P-D-C-A principle.
    The P stands for Knowing the Customer requirements & converting them into testable objectives.
    The D stands for developing the test cases corresponding to the above objectives.
    The C means actual testing of the product or feature using the above test cases.
    The A means adjusting the missed out test cases based on certain criteria.
    My concern is how can I apply the DMAIC method to further improve the process quality..? Do I need to do that for each phase, i.e. P, D, C & A Or just at a global level..?
    Any feedback would be highly appreciated.
    ~ Rahul

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    #135339

    Sanjay Joshi
    Member

    Hi Rahul,
    If you are using the PDCA cycle for ur softwares i guess DMAIC might help you a great deal.
    You can use DMAIC by stating objectives as “Define” These can be customer requirements for ur project.
    Similarly u can use Measure for where you are or what u achieved.
    Analyse for where you are against the stated goals.
    Improve where you want to!
    finally control the way u are going about completing the project after the improve step.
    Thats it!!
     

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    #135341

    Elbrin
    Participant

    Rahul,
    I know PDCA as Plan, Do, Check, Act; it is an iterative process and the basis for continuous improvement.
    Fundamental to the teachings of the three wise men, this basic precept is the root of TQM and present in all continuous improvement methodologies.

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    #135342

    Ranjan
    Participant

    Thnx, Sanjay !
    Just to describe a bit, each stage i.e. P-D-C & A has different inputs & outputs. How can I use the DMAIC by keeping the P-D-C-A intact..? Or do I need to replace the P-D-C-A by DMAIC..?
    If I reatin the P-D-C-A then do I need to apply the DMAIC at every phase..?
     

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    #135343

    Elbrin
    Participant

    Rahul,
    I think you have it backwards, PDCA would reside within DMAIC as part of the Analyse and Improve steps.

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    #135344

    Ranjan
    Participant

    Hi Elbrin,
    I think we are moving close to the target. Can you please describe this a bit. Can you give a rough mapping between the PDCA & DMAIC..?
    Why do you feel that the PDCA can be applied only at the Analyse & Improve phase..?
     

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    #135353

    Gerhold Grainger
    Participant

    DMAIC combined with PDCA is an established practice known as PDDMACICA:
    Plan/Do/Do (again ’cause it didn’t seem to work or help)/Mimic (what someone else used to do years ago whenever it happened)/Announce (project success)/Credit (yourself publicly for your ingenuity)/Ignore (the actual originator of the solution/improvement and everyone else who may have helped)/Credit (yourself some more)/Advance (in your organization ’cause the guys running the place are idiots who will buy/believe ANYTHING presented in color in PowerPoint.

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    #135358

    Mr IAM
    Participant

    WOW!  I’m speechless.

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    #135363

    Elbrin
    Participant

    In the Analyse phase of a project you begin to gain knowlege of your process, seaching for logical sub-groupings of your data, looking for the critical inputs which affect the output, seperating the wheat from chafe.  This may be done through a series of PDCA cycles using different SS tools.  Once you move into the Improve phase you may be doing a DOE, fractional factorial, followed by a full factorial as you isolate inputs which have the strongest effect on your output.  Each of these may be considered a PDCA cycle.
    Rahul, is this a question you truly need answered or are you looking to validate your own opinions / knowledge?

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    #135392

    Zero_Cool
    Member

    Wonderful. This is a classic one. I will put this one in my history log. Combination of DMAIC and PDCA. Please let me be your PADAWAN. Let me learn Force….I Like it…!!!.
    Zero_Cool

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    #135398

    Ranjan
    Participant

    Hi Elbrin,
    That is a valuable note. However I am looking for the Process ( & not the product ) improvement using the DMAIC.
    What if I use DMAIC for each of the PDCA phase..? With this I can set, measure, analyse,improve & control all the four phases giving a better process stability.
    My question is, if I do the DMAIC four times ( One each for the PDCA ), do you see any basic conflict there..?
    Note that I am already doing the Requirements validation at the P phase of the PDCA. Now it’s the question of how this is done across Features, Products & Teams.
    Hope this gives some clarification on what I am looking for.

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    #135401

    Zero_Cool
    Member

    Rahul,
    I don’t exactly know if you understand what you are doing or you wanted us to jump on the mud pit that you have created. Frankly enough, you doesn’t understand or refuse understand the application of PDCA (Plan, Do, Check, Act) and DMAIC (Define, Measure, Analyze, Improve, Control) thus you wanted to make your life so complicated and miserable.
    How can you use DMAIC in PLAN stage of your PDCA? DMAIC in your DO stage? and so fort and so on. What can you possibly re-re-re-Analyze in your ACT stage of your PDCA. Hey, even me I am in total lost only just by answering your message. Bottomline is you cannot do it. MAKE YOUR LIFE SIMPLE as well as your analysis. You are paid to make results fast not on how many times you use the tools or methodology and how good you use it.
    One more thing though, Six Sigma Methodology (DMAIC) are commonly use if the cause of the problem are UNKNOWN. If causes of problem are known, all you have to do is use the quality analysis and improvement tools you have learned and control your process…Dont forget the most important one…… “The COMMON SENSE” which perfectly works most of the time.
    Please stop mixing things up and dragging others to your quick sand. Some novice might think otherwise and copy your idea which I hope not.
    Anyway, if you happen to create such wearisome and mind buggling studies of yours, please DO NOT INFORM THIS FORUM. They might asked for a copy of the paper.
    Zero_Cool
     
     
     
     
         
     

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    #135414

    Elbrin
    Participant

    Rahul,
    It seems you are either hoplessly lost or just throwing mud in my eyes.  If you are serious about the questions you are asking I suggest you abandon your PDCA tool and go get some training.

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    #135418

    DEE cool zone
    Participant

    good,what about you another answer ??

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    #135427

    Ranjan
    Participant

    Hey Elbrin / 0’cool
    Please read this thread from the start. I really feel pity about your thought process & I really wonder about your advice & of course the maturity.
    Go read the thread completely where I’ve clearly defined what we do at each of the PDCA phase. Each of this phase is a sub-process of it’s own. Why do you feel that one can’t apply DMAIC for the sub-processes..? Have you guys done anything of this kind before..? Looks like you just follow something that somebody have tought you & don’t have a rational thinking.
    I can use the DMAIC as a gated process for the process quality control where each phase has a different input & output parameters.
    Anyways, the bottom line is if you don’t know how to read a complete document you are not eligible to participate in any of such discussions.
    My advice is, please rush to your teacher & get your fundas clarified.
    Thanks for the half cooked inputs,
    ~ Rahul
     
     

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