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Re: [polarsys-iwg] Maturity Assessment review and feedback

Le 29/08/2014 14:53, etienne.juliot@xxxxxxx a écrit :
Hi,
Hiho,

- Validation Scenarios or Verification Procedures plans: yes, that's a good idea. But it will be hard to implement. Imagine a project which have 20 very very poor and badly written validation scenarios that all passed with success: does this project will have a better notation than a project with only 3 very good and large scenarios with 1 fail? If we just focus on the availability or not of such a plan, I don't know where to find this information in the current EF and Polarsys infrastructure. Perhaps it could be added in the PMI for each release ...
I do agree with the concerns. Including it as a mandatory field in the PMI would also be great, because it would help projects setup good practices.
This would be hardly applicable to all Eclipse projets in the wild, however (PMI is Eclipse-wide, isn't it?). Maybe enforcing it for PolarSys only would do the trick..

- installation metrics: as Charles said, this metric is useful at the macro level. Of course, lots of enterprise used internal p2 repositories, and lots downloaded several the same plug-in. But, if you compare in the large every project, we will find a trend and the comparison between projects will be with the same criteria.
OK. By the way, once we have setup a 'measurement concept', we can still update/adjust its included metrics.
In other words: we have the 'downloads' concept, which intends to measure how much the product is downloaded. From there, we can have different means to measure this concept, and the metrics can be fine-tuned easily: repo downloads, update sites, surveys, etc. The same holds for 'installed base'.

- usage metrics: there was a data collector plug-in bundled in previous release trains: https://www.eclipse.org/org/usagedata/. It was deactivated as the data collected wasn't used by anybody. If we think it is really useful, perhaps it can be reactivated.
+1

- kind of users: Boris, I think in the apache logs, you can find with a reverse query from the IP the dns of each users who download a project. So, this can become a metric of diversity (yes, it doesn't solve the nature of the company behind the DNS, except if you filter . com and .org URL).
Yep, true.

- voices of users or « quality » representative users: as Boris said, we could have the both. And after, we will play with the measure weight in increase the importance of each of them, depending of Polarsys members' opinions. But in my opinion, it's very important to have the feedback of end users because they are the day-to-day users.
"Delay as much as possible unneeded decisions."
+1 to play with weights afterwards, depending on polarsys members' opinions.

- track of talk about the project in conferences: interesting. And it should be possible to automatically analyse the drupal database of each eclipsecon to find the name of the project in the description and keywords of each talk.
- vote on marketplace: you should discuss with EF if you need this new feature.
If we decide to include it in the measures, I will (discuss with EF).

And here is another new idea: one criteria to state if a project is mature or not is the availability of professional support, professional services provider, training. And we can automatically find this information as each provider has its own entry in the Eclipse Marketplace, and should list in their description the projects they are working on: http://marketplace.eclipse.org/category/markets/training-consulting
+1 -- can't wait to add it to the model. What do other members think about it?


--
boris


Etienne JULIOT
Vice President, Obeo
Le 29/08/2014 10:53, Boris Baldassari a écrit :
Hiho,

Some more comments inline. Just my opinion, though.

Le 28/08/2014 14:32, FAUDOU raphael a écrit :
Usage and downloads are different things and correlation is hard to establish. For instance, you may have one organization that download each new release in order to test new features (including beta releases) but with only evaluation purpose, while other organizations download one release a year and distribute it internally through enterprise update site. Finally, first organization might have downloaded 20 times a year a component while the second will have downloaded it 1 a year. From Topcased experience I could check that kind of situation a lot of times concerning industrial companies.
You should be able to calculate this metric from statistics of EF infrastructure (apache logs on updatesite, marketplace metrics, downloads of bundles when the project is already bundled, etc). Be careful to remove from the log stats any hudson/jenkins which consume updatesite: they don't reflect a real number of users.
Yes, that is a first point to care: real number of users. Because of internal update sites, I do not see how we could get public figures about number of users… except by asking explicitly to companies.

Something interesting should be also to measure the diversity of the users. For example, if a project is used only by academic or by only one large company, can we say it is mature?
woh… that is a BIG question. Here again Topcased experience showed that Company’ size is not a representative factor of maturity. 
What would be useful to know is whether component/tool is used in « operations » or only in « research » industrial phase. For instance, at Airbus, there are uses of Topcased in both operations (A380, A400M and A350 programs) and in Research and Technology (next programs) while at CNES Topcased was only used in research programs (from what I know).

Second really important point to measure is the number of concurrent users of a given component/tool. If there is only one user on given project, he/she can probably adapt to the tool and find workarounds concerning major bugs and finally usage is considered as OK. When there are several concurrent end users, you see bugs and issues far quicker and complaints occur quicker. So if a project with 5 concurrent users used a tool with success it has greater value (from my opinion) than 5 usages of one person.
That's really hard to measure.

I'm quite concerned by metrics which may not be easily or consistently retrieved. These pose a lot of threats on the measurement theory [1] and on the quality model consistency, and I would prefer not to measure something rather than measuring it wrongly or unreliably. Not to say that the above-mentionned metrics should not be used, but we have to make sure that they indeed measure what we intend to measure and improve their reliability.

[1] https://polarsys.org/wiki/EclipseQualityModel#Requirements_for_building_a_quality_model

My idea is reuse the existing Eclipse Marketplace to host this feedback. We can reuse ideas from other marketplace like Play Store or AppStore where users can write a review but also add a notation.
well, here, I’m not sure to agree. What you suggest is OK for Eclipse technologies but I see PolarSys as driven by industry and not by end users. For Polarsys I would expect that industrial companies give their feedback, but not that all end users give feedbacks as it can lead to jungle.
On an industrial project, there are quality rules for specification, design, coding, testing…. and the whole team must comply with those rules. If we interviewed each member of the team we might have very different feedbacks and suggestions about process and practices. That is why it is important to get a limited voices and if possible « quality » representative industrial voices.
I don't think industry should be the only voice we hear to; this is a clear violation of Eclipse quality requirements regarding the three communities.
Listening to a larger audience IMHO really leads to better feedback and advice. I would tend to mix both.

But perhaps I’m wrong in my vision of what PolarSys should be. Just le me know…
Well, a great point with our architecture is that we can customise the json files describing the model, concepts and metrics easily. So it is really simple to have a PolarSys quality model and a more generic Eclipse quality model, with different quality requirements and measures.

I still believe that the PolarSys QM should also rely on the other communities (especially regarding feedback) and should not be too isolated, although some specific customisations are definitely needed on quality attributes, concepts and metrics.


I'll let pass some time and then update the quality model with the propositions that gathered positive feedback. I will also try to summarise the metrics needed for the computations and check their availability to help discuss this specific subject.


Have a wonderful day,



--
boris


Best
raphaël



Etienne JULIOT
Vice President, Obeo
Le 22/08/2014 16:57, Boris Baldassari a écrit :
Hiho dear colleagues,

A lot of work has been done recently around the maturity assessment initiative, and we thought it would be good to let you know about it to have some great feedback..

* The PolarSys quality model has been improved and formalised. It is thoroughly presented in the polarsys wiki
[1a], with the metrics [1b] and measurement concepts [1c] used . The architecture of the prototype [1d] has also been updated, following discussions with Gaël Blondelle and Jesus Gonzalez-Barahona from Bitergia.

* A nice visualisation of the quality model has been developed [2] using d3js, which summarises the most important ideas and concepts. The description of metrics and measurement concepts has still to be enhanced, but the quality model itself is almost complete. Please fell free to comment and contribute.

* A github repo has been created [3], holding all definition files for the quality model itself, metrics and measurement concepts. It also includes a set of scripts used to check and manipulate the definition files, and to visualise some specific parts of the system.

* We are setting up the necessary information and framework for the rule-checking tools: PMD and FindBugs for now, others may follow. Rules are classified according to the quality attributes they impact, which is of great importance to provide sound advice regarding the good and bad practices observed in the project.


Help us help you! If you would like to participate and see what this on-going work can bring to your project, please feel free to contact me. This is also the opportunity to better understand how projects work and how we can do better together, realistically.

Sincerely yours,


--
Boris



[1a] https://polarsys.org/wiki/EclipseQualityModel
[1b] https://polarsys.org/wiki/EclipseMetrics
[1c] https://polarsys.org/wiki/EclipseMeasurementConcepts
[1d] https://polarsys.org/wiki/MaturityAssessmentToolsArchitecture
[2] http://borisbaldassari.github.io/PolarsysMaturity/qm/polarsys_qm_full.html
[3] https://github.com/borisbaldassari/PolarsysMaturity

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