advertisement

Iwsm2014 measuring the functional size of mobile apps with cosmic (harold van heeringen & edwin van gorp)

50 %
50 %
advertisement
Information about Iwsm2014 measuring the functional size of mobile apps with cosmic...
Software

Published on October 9, 2014

Author: COSMIC-FSM

Source: slideshare.net

Description

IWSM Presentation
advertisement

1. Measure the functional size of a mobile app Harold van Heeringen & Edwin van Gorp

2. | Measure the functional size of a mobile app Using the COSMIC functional size measurement method Harold van Heeringen Senior consultant software metrics Department Sizing, Estimating & Control Sogeti Nederland B.V. harold.van.heeringen@sogeti.nl @haroldveendam Rotterdam, October 6th, 2014 2IWSM-Mensura 2014

3. | Overview  Reasons for this paper/presentation;  Mobile apps – why are they different?;  Why measure apps using COSMIC?;  Short COSMIC overview;  The proposed approximate method;  Conclusions. IWSM-Mensura 2014 3

4. | Beware!  This is a technical paper/presentation!  Knowledge of the COSMIC method is required! IWSM-Mensura 2014 4

5. | Reasons for this paper/presentation 5IWSM-Mensura 2014

6. | Why?  IT industry is changing – new types of applications and ways to interact with software arise, for example:  Cloud computing;  Google glass;  Mobile apps.  Software sizing, estimation and benchmarking challenges:  Fixed price/fixed date app development.  Need for methods and guidelines to apply standards to sizing, estimating and benchmarking. IWSM-Mensura 2014 6

7. | Mobile apps  Do I really have to introduce these? IWSM-Mensura 2014 7

8. | Some characteristics  Downloaded on a mobile device, like phone or tablet;  Connects to the internet (Wi-Fi/cellular);  Many different application types;  Touch screen;  Use of GPS: content and functionality change, depending on location;  Use of motion sensor: motion of device can result in different display;  Content updates automatically;  Functionality may be updated periodically. IWSM-Mensura 2014 8

9. | Mobile apps – why are they different?  More ways of user interaction:  Changing position of device: toggling;  Voice input, e.g. Siri;  Reaction to real-time events:  Reach a certain location: message ‘flasher’;  Unclear where data is stored:  On device/on backend/in cloud;  Functionality to handle disruptions:  E.g. an incoming call;  Specific non-functional requirements:  Security, performance, data traffic, battery use. IWSM-Mensura 2014 9

10. | Why measure apps using COSMIC?  Measuring mobile apps with the IFPUG method has already been published (the IFPUG guide to IT and software measurement).  Using COSMIC may produce even better results:  More accurate measurement due to ratio scale;  Concepts of layers and peer components fits mobile app architectures;  Lack of knowledge of the data model is no show stopper for COSMIC.  Objective: create an approximate method to accurately size mobile apps using COSMIC. IWSM-Mensura 2014 10

11. | Short COSMIC overview 11IWSM-Mensura 2014

12. | Entries  functional process 12IWSM-Mensura 2014 Triggering event is sensed by Triggering Entry Boundary Functional user Functional process Triggering event is sensed by Triggering Entry Boundary Functional user Functional process

13. | Functional processes and data movements 13IWSM-Mensura 2014 Functional User Requirements Data movement Data manipulation Sub-processes Software Functional processes Functional User Requirements Data movement Data manipulation Sub-processes Software Functional processes

14. | COSMIC overview 14IWSM-Mensura 2014 Users Functional process Data W X R E

15. | The proposed approximate method 15IWSM-Mensura 2014

16. | Basic assumptions  A mobile app is an application layer, developed on top of one ore more data layers:  The physical location of the data layer is irrelevant;  Logically, no persistent data is stored in the application layer:  No Reads/Writes are measured, only Entries/eXits;  The app can use certain process data that is spontaneously present:  E.g. date + time and GPS location;  Mobile apps are considered business applications:  One eXit for all (error) messages;  (Error) messages come from data layer: 1 Entry. IWSM-Mensura 2014 16

17. | Measurement strategy  Equal to ‘standard’ COSMIC measurements, identify:  Purpose, e.g. estimate realisation phase;  Scope, e.g. a set of functional requirements;  Functional users, e.g. the end users that download the app from the app store;  Level of granularity, e.g. functional process level.  Keep basic assumptions in mind when doing so. IWSM-Mensura 2014 17

18. | Mapping phase  Equal to ‘standard’ COSMIC measurements, identify:  Functional processes;  Objects of interest;  Data groups.  Keep basic assumptions in mind when doing so. IWSM-Mensura 2014 18

19. | Measurement phase: approximate method  Two steps: 1. Indentify the type of functional process; 2. Quantify the parameters involved. IWSM-Mensura 2014 19

20. | Functional process types  Looking at the primary intent of a functional process: 1. View functionality; 2. Data manipulation (add, change, delete); 3. Enquiry (before update); 4. User supporting functionality, e.g. list box, selection screen, pop-up function); 5. Special functionality: • Dynamically generated menus; • Log in/log out functionality; • Help functionality; • Invoking external functionality. IWSM-Mensura 2014 20

21. | View functionality 21IWSM-Mensura 2014

22. | View functionality  Basic view functional process: 6 CFP;  1 OOI/1 data group:  For each additional OOI/data group:  For each calculated/derived data group: 1 eXit. IWSM-Mensura 2014 22 E Start entry X Question for information to the data layer E Receiving data E Receiving application error messages X Show data X Show application error messages E Receiving data X Show data

23. | Data Layer View functional process IWSM-Mensura 2014 23 E X E X 6 CFP Application layer X E OOI / data group Messages

24. | Measurement phase: approximate method  For each functional process with primary intent to present data to at least one of the functional users: 4 CFP + (2 CFP * number of data groups derived from the data layer) + (1 CFP * number of data groups with calculated and/or determined data) IWSM-Mensura 2014 24

25. | Data manipulation functionality  Basic add/change/delete functional process: 4 CFP:  For each additional OOI/data group manipulated:  For each data group shown to the user:  For each validation for which referential data is needed: IWSM-Mensura 2014 25 E Start entry X Providing information to the data layer E Receiving application error messages X Show application error messages E Entering data X Providing information to the data layer X Questions for information to the data layer E Receiving data X Question for information to the data layer E Receiving data X Show data

26. | Measurement phase: approximate method  For each functional process with primary intent to manipulate data for at least one of the functional users: 2 CFP + (2 CFP * number of data groups manipulated) + (3 CFP * number of displayed data groups) + (2 CFP * number of validations with referential data) IWSM-Mensura 2014 26

27. | Enquiry / user supporting functionality  Enquiry functionality (before update):  Identical to view functionality.  User supporting functionality (non mandatory):  Identical to view functionality. IWSM-Mensura 2014 27

28. | Special functionality - help  One functional process per help functionality type;  Identical to view functionality. IWSM-Mensura 2014 28 4 occurrences of the same output-type

29. | Special functionality – Login / Logout  Standard log in: 5 CFP.  Log status is process data spontaneously present in all functional processes.  Standard Log out: 2 CFP. IWSM-Mensura 2014 29 E Start entry X Providing credentials to the data layer E Receiving log status E Receiving application error messages X Show application error messages E Start entry X Show application error messages

30. | Conclusions  This approximate method is intended to be a guideline to apply the COSMIC FSM quickly and correctly when measuring mobile apps;  Based on a few simple steps, the size measurement can be easily generated: 1. Indentify the type of functional process; 2. Quantifying the parameters involved.  Please read the paper if you are interested in a more detailed explanation of the method. 30IWSM-Mensura 2014

31. Thank you for your attention.

32. Harold van Heeringen Senior Consultant Software Metrics /Software Cost Engineer Sogeti Sizing, Estimating & Control (SEC) @haroldveendam harold.van.heeringen@sogeti.nl President ISBSG (International Software Benchmarking Standards Group (www.isbsg.org)) Board member NESMA (Netherlands Software Metrics Association (www.nesma.org)) IAC member COSMIC (www.cosmicon.com)

Add a comment

Related presentations

Speaker: Matt Stine Developing for the Cloud Track Marc Andressen has famou...

This presentation explains how to develop a Web API in Java using (JAX-RS or Restl...

1 App,

1 App,

November 10, 2014

How to bring innovation to your organization by streamlining the deployment proces...

Cisco Call-control solutions can handle voice, video and data

Nathan Sharp of Siemens Energy recently spoke at the SAP Project Management in Atl...

Related pages

Measure the Functional Size of a Mobile App

Harold van Heeringen: Edwin van Gorp: ... could be applied to measure the functional size of mobile apps. ... Measuring COSMIC Software Size from ...
Read more

Presentatie supplier performance measurement door harold ...

Iwsm2014 measuring the functional size of mobile apps with cosmic (harold van heeringen ... of a mobile app Harold van Heeringen & Edwin van Gorp ...
Read more

IWSM Mensura 2014

Measure the Functional Size of a Mobile App: Using the COSMIC Functional Size ... Harold van Heeringen and Edwin van Gorp ... Harold van Heeringen, ...
Read more

IWSM Mensura 2014 ToC (PDF Download Available)

IWSM Mensura 2014 ToC. ... Measure the Functional Size of a Mobile App: Using the COSMIC Functional Size ... Harold van Heeringen and Edwin van Gorp
Read more

An ISO/IEC 33000-Compliant Measurement Framework for ...

Measure the Functional Size of a Mobile App: Using the COSMIC Functional Size Measurement Method: ... Edwin van Gorp: ... Harold van Heeringen, ...
Read more

SEMrush.com -> Advanced Keywords and Competitors Research Tool

SEO and SEM professionals use SEMrush to find the best keywords and online marketing ideas
Read more

Search results for "IWSM/Mensura" – FacetedDBLP

... Wilhelm Meding(7) Harold S. van Heeringen(6) Hassan Soubra(6) Juan Jose Cuadrado-Gallego(6) Maya Daneva(6) Akito Monden(5) More (+10 of total 377) ...
Read more

CSDL - 2014 Joint Conference of the International Workshop ...

2014 Joint Conference of the International Workshop on Software Measurement and the International Conference on Software Process and Product Measurement ...
Read more

UCLappA WebSite - UCL Computer Science - Home

van Heeringen, H. and Van Gorp, E. ... {van Heeringen, Harold and Van Gorp, Edwin} ... Size of a Mobile App: Using the COSMIC Functional Size ...
Read more