Software Release Planning for Evolving Systems

1
Software Release Planning for Evolving Systems
PhD Candidacy Oral Examination

• by
• Omolade Saliu
• Supervisor Dr. Guenther Ruhe
• Friday, November 25, 2005

2
Agenda

• Introduction
• Problems Related work
• Proposed Solution
• Summary
• Future Plans

3
Background

Introduction
4
Related Research
Analysis

• Problem 1 No defined process
• Problem 2 No consideration for evolving systems

Problem
5
Related Research- Characterization Impact
Analysis
Related Research
Mining Change Data
Architecture Evaluation
Code Decay/Growth
Metric-based
Questioning
Eick et al. 2001
Lehman, M. 1980
Svahnberg et al. 2003
SAAM Kazman et al 1994
Belady Lehman 1976
Al-Naeem et al. 2005
ATAM Kazman et al. 98
Change Pattern/Fault proneness
Gall et al. 97, 98 Ohlsson et al. 01
CBAM Kazman et al 01
Hassan et al. 04 Ying et al. 2004
ALMA Bengtsson et al . 02
Zimmermann et al. 2005
ARID Bengtsson Bosch
Impact Analysis
Bohner Arnold 1996

• No release planning consideration
• Evaluation based on imagined scenarios
• Characterization scheme not generalizable

Problem
6
Research Objectives

• Flexible process model that facilitates
  decision-making
• Develop characterization and assessment scheme
  for evolving system components
• Model effects of system constraints in features
  assignment decisions involve impact analysis
• Extending ReleasePlanner tool to support RP for
  evolving systems
• Empirical evaluation of results

Solution
7
Decision-centric process model
S-EVOLVE
Solution
8
S-EVOLVE Components characterization and
Assessment
DoM Factors
Components
Size
Complexity
COMP-1
Difficulty of Modification (DoM)
Health
COMP-2

Understandability

Criticality
COMP-M
Functionality
Solution
9
S-EVOLVE System constraints using
impact information

• Perform expert-based impact analysis
• Determine eXtent of Modification (XoM)

System constraint function(DoM and XoM)
Solution
10
S-EVOLVE Empirical validation

• Questionnaires on current practices
• Initial case study investigating feasibility of
  our approach
• Participants ReleasePlanner Technical Team
• Feasibility subjectively assessed based on
  observation feedback (ease of use
  intuitiveness)
• Experimented with an extension of EVOLVE to
  study effects of system constraints

Summary
11
Expected Contributions
Following Mary ShawICSE03 classification of
research contributions in Software engineering

• Method
• The S-EVOLVE method
• Method for Analysis and Evaluation
• Expert-based systematic evaluation of system
  components
• Generalization
• Extending the scope of release planning to
  evolving systems
• Feasibility Study
• Empirical studies for validation improvement

Summary
12
Future Plans

• The decision-centric process model is completed

Characterization Assessment
Decision-centric Process model
Research Objectives
Effect of System constraint
ReleasePlanner Extension
Empirical evaluation
Future Plans
13
Future Plans

• Refine and improve the assessment scheme based on
  case studies results (Apr-Sept 2006)
• How to account for new components due to feature
  implementation
• Investigate effect of change type
• Focus on developing taxonomy scheme for features

Characterization Assessment
Decision-centric Process model
Research Objectives
Effect of System constraint
ReleasePlanner Extension
Empirical evaluation
Future Plans
14
Future Plans

• Investigate other ways to incorporate system
  constraint in RP decision model (Jan Sept
  2006)

Characterization Assessment
Decision-centric Process model
Research Objectives
Effect of System constraint
ReleasePlanner Extension
Empirical evaluation
Future Plans
15
Future Plans

• Empirical validation (8 months)
• Stage 1 ReleasePlanner Team
• Sample Goal Investigate DoM attributes for
  completeness
• Sample Goal Investigate the utility of
  S-EVOLVE over regular RP
• Sample Goal Investigate DoM assessment for
  consistency
• Period Jan Apr 2006 (4 months)
• Stage 2 Fraunhofer-Centre, Maryland
  (FC-MD)
• Sample Goal Investigate DoM attribute for
  completeness
• Sample Goal Investigate DoM assessment for
  applicability
• Period Apr- Aug 2006 (3-4 months)
• Stage 3 Industrial case study Chartwell ???

Characterization Assessment
Decision-centric Process model
Research Objectives
Effect of System constraint
ReleasePlanner Extension
Empirical evaluation
Future Plans
16
Future Plans

• Implement further extended components to augment
  ReleasePlanner based on improvements in
  modeling(Apr Sept 2006)

Characterization Assessment
Decision-centric Process model
Research Objectives
Effect of System constraint
ReleasePlanner Extension
Empirical evaluation
Future Plans
17
List of Related Publications

• Journal Publications
• Saliu, O. and Ruhe, G., (2005) Software Release
  Planning for Evolving Systems, Innovations in
  Systems and Software Engineering a NASA Journal,
  1(2), September, pp. 189-204.
• Ruhe, G. and Saliu, M. O., (2005) The Art and
  Science of Software Release Planning", IEEE
  Software, 26(6), November/December, pp. 47-53.
• Refereed Conferences
• Saliu, O. and Ruhe, G. (2005) "Supporting
  Software Release Planning Decisions for Evolving
  Systems", 29th IEEE/NASA Software Eng. Workshop
  (SEW-29), Greenbelt, USA, Apr 6-7, pp. 14-26.
• Ngo-The, A. and Saliu, M. O., (2005) "Measuring
  Dependency Constraint Satisfaction in Software
  Release Planning using Dissimilarity of Fuzzy
  Graphs", 4th IEEE International Conference on
  Cognitive Informatics (ICCI'05), Irvine,
  California, USA, Aug. 8-10, pp. 301-307.
• Ngo-The, A. and Saliu, M. O., (2005) "Fuzzy
  Structural Dependency Constraints in Software
  Release Planning", IEEE International Conference
  on Fuzzy Systems (FUZZ-IEEE 2005),  Reno, NV,
  USA, May 22-25, pp. 442-447.
• Ruhe, G., Saliu, O., Bhawnani, P., Momoh, J. and
  Ngo-The, A.  (2005) "Decision Support for
  Software Release Planning - Methods, Tools, and
  Practical Experience", (Tutorial) 29th IEEE/NASA
  Software Engineering Workshop (SEW-29),
  Greenbelt, MD, USA, April 3 8, pp. 217-250.
• Book Chapter
• Maurice, S., Ruhe, G., Saliu, O., Ngo-The, A.,
  and Brassard, R., (2005) "Decision Support for
  Value-Based Software Release Planning", in S.
  Biffl, A. Aurum, B. Boehm, H. Erdogmus, P.
  Grünbacher (Eds.), Value-Based Software
  Engineering Management, Springer, September.
• Poster
• Saliu, O. (2005) "S-EVOLVE - A Decision Support
  Method for Planning Releases of Evolving Software
  Systems", Students Poster Competition,
  Informatics Circle of Research Excellence (iCORE)
  Summit, Banff, Canada, Aug 31 - Sep 2.
• In-preparation Conference Paper
• Saliu, O., (2006) A Systematic Approach for
  Assessing Components and Planning Releases of
  Evolving Software Systems (Doctoral Symposium)
  28th International Conference on Software
  Engineering (ICSE 2006), Shanghai, China, May
  20-28 (submitted).

18
Questions
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