Practical Software Estimation Measurement

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New Article: Traits of Successful Software Development Projects

Traits of Successful Software Development Projects

Enough already with Healthcare.gov and the many (many) other high-profile IT project failures; let’s talk about government software projects that actually worked. Successful software projects are no accident. Best-in-class government IT projects share common traits that agencies can use to ensure success. In a recent article for Government Computer News, QSM's Larry Putnam, Jr. leverages data from from the QSM Database to identify best practices for successful government projects.

Read the full article!

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Articles Project Management

A Case of Software Data Collection

Software Data CollectionTelevision has done a fine job of glamorizing the job of an investigator.  Whether you fancy the classic Sherlock Holmes, the affable Colombo, or even perhaps enjoy the suspense associated with cracking the case on television shows like “The First 48,” Hollywood has tried to make us believe the search for clues is always exciting.  However, those who have searched thousand row spreadsheets for software data collection efforts, may beg to differ with that sentiment.  The needle in a haystack analogy may seem more fitting, if only the haystack was bigger!

Although most folks will never get the chance to track down a villain like Sherlock’s nemesis, Professor Moriarty, there still is a need in many professions to find “clues.”  In software estimation, those clues can be thought of as software project data. What information do I need to solve this software project estimation case and how do I obtain it? In that search for information, perhaps we can utilize some basic investigation steps to find the software data needed to produce good software project estimates. Honestly, why would one embark on the often daunting quest of collecting project data for future estimation without at least a basic approach?  Well, there are many reasons.  However, let’s focus on a way to proactively look at an approach using the analogy of an investigation.

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Data

Software Estimation by the Seat of Your Pants

Software Estimation by the Seat of Your PantsThe laws of flight have many commonalities with the “physics” of software development. Whereas the principles of aerodynamics are essentially about thrust, drag, lift and weight, developing software has always been about the relationship between size (scope), effort (cost), duration (schedule) and the often overlooked measurement of quality (reliability).  

In aviation parlance the expression “flying by the seat of your pants” literally meant that you felt the plane through your “seat”. Early aircraft had limited navigational aids, mainly a rudimentary compass (which worked only when flying level) and a simple string to assess airflow relative to the plane’s fuselage. Pilots could determine the degree of an ascent or descent by G-force sensation, or assess airspeed by the severity of the aircraft’s vibrations. Until the invention of the gyroscope it was quite dangerous to fly without a virtual horizon – the centerpiece of a modern dashboard.

Early aeronauts plotted their routes using individual skill, celestial or fixed landmarks and their own real time perceptions rather than depending on mechanical tools. However, fog or low visibility would render the limited instruments they had useless, with the flight itself remaining as a risky endeavor. A successful trip meant you landed at your destination in one piece, but it was largely dependent upon the talent and judgment of the aviator, visibility and weather, and perhaps no small amount of luck.    

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Estimation

Ask Carol: No Free Lunch in Software Estimation and Benchmarking

No Free Lunch in Software Estimation BenchmarkingDear Carol: 

Given all your international experience, I’m hoping you can tell me where I can find a large, freely available industry database that project managers could use for software estimation and/or benchmarking.  After 5 decades of software development wouldn’t you think that we could put together a software estimation or benchmarking database that the world could use for free? 

- Hopeful in Hartford

Dear Hopeful:  

Great question – and the dream of many IT project managers.  It might seem like an easy concept (just collect actual effort and project size and use it for future estimates); in practice it’s not that simple.

What I know is that in software estimation and benchmarking, there is no free lunch -- you get what you pay for.  And I’ll explain why…

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Database Ask Carol

New Article: Set the Stage for Software Project Success

Set the Stage for Software Project Success

Management decisions made before a software project is underway are a significant factor in determining whether it succeeds or fails. In a recent article for Projects at Work, QSM's Don Beckett identifies seven principles, based on comprehensive studies, that leaders must support and uphold to help create an environment in which projects can succeed. Ignoring them practically guarantees failure.

Don Beckett has 18 years of experience in software project estimation, measurement, and analysis. His responsibilities at QSM include research, consulting, and customer support. Don was an analyst/co-author of the 2006 QSM Software Almanac and has contributed articles to Crosstalk and Software Tech News.

Read the full article!

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Articles Project Management

QSM's Doug Putnam Discusses Data Management on WUSA9's Government Contracting Weekly

In a recent interview on WUSA9's Government Contracting Weekly, a show devoted to winning government contracts, QSM Co-CEO Doug Putnam discussed data management with the show's host, Jim McCarthy. QSM was founded by Larry Putnam, Sr. in 1978 because he saw the need to supply quantitative evidence when justifying budgets for large government software projects. Doug explains the importance of leveraging quantitative measurement in today's dynamic goverment IT environment, from managing team size to improving quality. He also identifies the core metrics to track when starting your own metrics program. Watch the full episode above!

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QSM News

Extending SLIM Tools with Extension Menu Items

Extension menu items are one of the best new features in SLIM-Suite 8.2.  You don’t have to be a programmer (or even pretend to be one online) to create customizable menu items that perform tasks like these right from the menu of any SLIM-Suite application:

  • Call external applications like Excel, Word, or PowerPoint
  • Run SLIM-Suite utilities or APIs
  • Open external references or process guides
  • Launch the Windows Snipping Tool to capture screen settings or data and email them to your team.

Once you get the hang of it, creating your own custom menu items is easy: if you can unzip files and use Notepad, trust me – you can do this!

The Extension Menu Item feature is documented in its own chapter in each SLIM-Suite user guide, but if you’re like me you could probably use a few real life examples and some sample configuration settings to jump start the process.  In a fairly short period of time, I was easily able to create the following menu items in SLIM-DataManager:

  • IMPORT PROJECT FROM SPREADSHEET
  • EXPORT DATABASE TO SPREADSHEET
  • RUN DATAMANAGER API
  • Bring up the API documentation
  • Bring up an internal data validation guide
  • Launch Excel, Word, PowerPoint and OneNote
  • Launch the Windows Snipping tool.

The menu items I created fell into several categories: launching an external application, launching a SLIM-Suite utility/API, pointing to an external process guide, launching a Windows utility. I’ll cover each one, providing sample configuration text for each.

CREATING THE .INI FILE

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SLIM Suite Tips & Tricks

How a Collaborative Process Produces Realistic Estimates Fast Webinar Replay and Q&A Highlights

How a Collaborative Estimation Process Produces Realistic Estimates Fast

QSM's recent webinar, How a Collaborative Estimation Process Produces Realistic Estimates Fast, presented by Laura Zuber, sparked a lively Q&A session from our audience. Here are the highlights:

Q: How do I know which template to use when creating a new estimate in SLIM-WebServices?

A: That’s a good question. Your back office administrator configures templates to map to your software development lifecycle, your standard processes and different project types. The back office person can provide detailed descriptions and key information that are viewable from the Feasibility Wizard so you know which one to select.

Q: What makes a project assessed as conservative or risky?

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Webinars SLIM-WebServices

The Problem of Measuring Software Productivity

Measuring Software ProductivitySo, just why do we want to measure software productivity (without using the root word “productive” in the answer)?  I believe that it comes down to the desire to numerically evaluate an inherently complex process so that quantitative comparisons can be made to provide a basis for decision making:

  • Is output per unit of labor or cost increasing or decreasing?
  • Benchmarking against “the industry” or “the competition”
  • Identify practices that either promote or impede increased output and better quality

I’m sure there are many others that could be added to the list.

Issues

Traditionally, software productivity has been measured as a ratio between units of output and units of effort.  Simple productivity measures worked fairly well for well defined, repetitive manufacturing processes where a 10% increase in input reliably translates to a comparable increase in output, but there are massive problems with applying simple productivity measures to complex, non-repetitive design processes like software development.

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Productivity

Ask Carol: With Software Sizing, If You Don't Know the What, You Can't Estimate the How

Software Sizing and Project EstimationDear Carol: 

I’m a developer in our IT department and we know that project estimating is a big deal for our customers.  Somehow, no matter what we do, we can't seem to get it right.  We do know that project size is an important input to good estimating  and our gut feel is that if we get sizing right, we’ll do better estimates!  I know you recommend using function points, but I’ve also been reading a lot about use case points, story points, SLOC, sizing by analogy, T-shirt sizing, COSMIC and other sizing metrics.  We do a mix of waterfall, agile, iterative and even Kanban to do our projects so what’s the best choice for sizing to get the best results? 

- Size Challenged in Milwaukee

Dear Size Challenged:    

Sometimes I wonder if the internet and the proliferation of (mis)information is a good thing. Before the internet, our choices (for sizing or estimating or anything) were limited and we didn’t have such an overwhelming task to first sift through many options before taking action.  Your list of software sizing choices is an example of this. 

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Software Sizing Estimation Ask Carol