Easy Requirements Environment

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• Easy Requirements Environment
• Kiev National Taras Schevchenko University
• Faculty of Cybernetics
• Petro Protsyk

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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Introduction
Why requirements engineering is so important?
Software Projects statistics (Standish Group,
over 8000 projects)
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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Introduction
Reasons of failures
Lack of Customers Input 13 Incomplete
Requirements Specifications 12 Changing
Requirements 11 Lack of Resources
6 Unrealistic Expectations 6 Unclear
Objectives 5
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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Introduction
How to improve software development results?
Organize strict, consistent, iterative
Requirements Engineering process
Capture requirements
Management
Document Process
Analyse, Refine, Specify, Verify .
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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Purpose of ERE
ERE is a web based system for managing and
analyzing requirements

• Features
• Multi-user environment
• Adaptable for different domains
• Working with different representations
• Automated Processing procedures
• Checking lexical properties
• Using formal languages
• Preparing documents

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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Concepts of ERE
Defining different requirements types and
structure
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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Concepts of ERE
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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Data Types

• Simple
• Boolean
• DateTime
• Integers / Reals
• String
• Complex
• Image
• File / Object (Document)
• Reference
• Processible
• Text
• Formal Specification (ForTheL, TLC)
• Grammars and templates

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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Data Types
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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Data Types (ForTheL)
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The System
shall be
AND
stable
shall generate
response
in
Interactive Context Free grammars and
Variables S -gt V seconds
10
seconds
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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Processing
Preparing System Specification Document
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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Processing
Analyzing lexical properties of Natural Language
requirements representation
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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Processing
Checking properties of Formal Specifications
using SAD system
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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Architecture
External Tools
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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Conclusions

• Capture and specify requirements in a
  systematic way
• Produce structured requirements documents with
  different levels of representations
• Facilitate communication
• Perform automatic analysis

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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Further work

• Extending analytical functionality
• Extending specification languages
• Building new formalisms for program
  specification
• Performing experiments on large sets of
  requirements

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• Contents
• Introduction
• Purpose of ERE
• Concepts of ERE
• Processing
• Architecture
• Further work

Thank you for attention, please ask your
questions.