1. In this issue

   • Rachel Harrison

   EditorialNotes 05 December 2020 Pages: 1411 - 1412

2. The effect of Bellwether analysis on software vulnerability severity prediction models

   • Patrick Kwaku Kudjo
   • Jinfu Chen
   • Christopher Kudjo

   OriginalPaper 07 January 2020 Pages: 1413 - 1446

   

3. A public unified bug dataset for java and its assessment regarding metrics and bug prediction

   • Rudolf Ferenc
   • Zoltán Tóth
   • Tibor Gyimóthy

   OriginalPaper Open access 03 June 2020 Pages: 1447 - 1506

   

4. A classification and systematic review of product line feature model defects

   • Megha Bhushan
   • Arun Negi
   • Ajay Kumar

   OriginalPaper 11 August 2020 Pages: 1507 - 1550

   

5. Predicting technical debt from commit contents: reproduction and extension with automated feature selection

   • Leevi Rantala
   • Mika Mäntylä

   OriginalPaper Open access 04 July 2020 Pages: 1551 - 1579

   

6. An empirical study on predictability of software maintainability using imbalanced data

   • Ruchika Malhotra
   • Kusum Lata

   OriginalPaper 05 August 2020 Pages: 1581 - 1614

   

7. What lies behind requirements? A quality assessment of statement grounds in requirements elicitation

   • Corentin Burnay
   • Sarah Bouraga
   • Ivan J. Jureta

   OriginalPaper 05 September 2020 Pages: 1615 - 1643

   

8. Application of machine learning techniques to the flexible assessment and improvement of requirements quality

   • Valentín Moreno
   • Gonzalo Génova
   • Anabel Fraga

   OriginalPaper 27 April 2020 Pages: 1645 - 1674

   

9. Characteristics that affect preference of decision models for asset selection: an industrial questionnaire survey

   • Emil Alégroth
   • Tony Gorschek
   • Michael Mattsson

   OriginalPaper Open access 28 December 2019 Pages: 1675 - 1707

   

10. Editor’s note

    News 19 March 2020 Pages: 1709 - 1709

11. Towards supporting software assurance assessments by detecting security patterns

    • Michaela Bunke
    • Karsten Sohr

    OriginalPaper 05 May 2020 Pages: 1711 - 1753

    

12. ER²C SDMLC: enterprise release risk-centric systems development and maintenance life cycle

    • Hamish Sadler

    OriginalPaper 05 July 2019 Pages: 1755 - 1787