Lecture 08: Quality and Sentiment Analysis Flashcards
What is quality?
Quality is through the use of products and services the ability to satisfy customers and the intended and unintended relevant interested parties.
Quality is:
- Not absolute: different meanings / different situations
- Multidimensional: many contributing factors, not easy to summarise or quantify
- Subject to constraints
- Acceptable compromises
What are the five approaches to view quality?
- Transcendent
- Product-based
- User-based
- Manufacturing
- Valued-based
What is the Transcendent approach to view quality?
The classical definition that quality is an innate excellence, through uncompromising standards and high achievement, it is impossible to quantify and is difficult to apply in a meaningful sense.
What is the Product-based approach to view quality?
The view that quality is precise and measurable - differences can be reflected in the variation of quantity of an attribute. The higher the quality, the higher the cost.
What is the User-based approach to view quality?
The view that quality is subjective to the eye of the beholder, people have differing wants and needs, as a result it is highly subjective and not definable or measurable. This creates two problems:
- How to aggregate varying individual preferences?
- How to distinguish attributes that imply quality from those that maximise satisfaction?
What is the Manufacturing-based approach to view quality?
The view that quality can be measured based on how the product or service produced conforms to the set of initial requirements for them. Any deviation from these requirements implies a reduction in quality, has an emphasis on:
- reliability engineering
- statistical control
What is the Value-based approach to view quality?
The view that quality is as:
- Performance at an acceptable price.
- Conformance at an acceptable cost.
It is about blending two distinct concepts:
- Quality: the measure of excellence
- Value: the measure of worth
The ability provide what a customer requires at a price they can afford.
What is Quality Management as a process?
Inspection –> Quality Control - Quality Assurance –> Total Quality Management (TQM)
In Quality Management, what does the process of Inspection involve?
The process of Inspection involves deploying people to inspect in order to ensure a basic level of quality. This process will ensure that standards are met and you can identify areas which do not conform to standards and take corrective action.
It is a reactive process of detection, rather than preventative, and is rather expensive, inefficient and ineffective in comparison to other processes in quality management.
In Quality Management, what does the process of Quality Control involve?
The process of Quality Control is about quality panning and procedures as well basic statistics and performance data. It involves using statistical techniques such as sampling to make decisions. This again a reactive process, and is used after the process of inspection, and can remove chronic problems
In Quality Management, what does the process of Quality Assurance involve?
The process of Quality Assurance involves developing quality systems and quality planning to ensure a process or product fulfills quality requirements. It is aimed at developing procedures which avoid mistakes, and focuses on prevention rather than detection.
Places an emphasis on:
- Procedure compliance
- Product conformity
These being achieved through product and operations management tracking
In Quality Management, what does Total Quality Management (TQM) involve?
The process of a centred and management approach to manage quality. The idea that it is the responsibility of all individuals within an organisation, not just managers, to ensure the long term success and benefits of customer satisfaction.
It relies heavily on employee involvement, collaboration and teamwork to achieve that overall goal.
What is the ISO 25012 / 2008?
Defines a general data quality model for data retained in a structured format within a computer system. It can be used to:
- establish data quality requirements
- define data quality measures
- Plan and perform data quality evaluations
What are the 15 classes of quality attributes?
- Accuracy
- Completeness
- Consistency.
- Credibility.
- Currentness
- Accessibility
- Compliance
- Confidentiality
- Efficiency
- Precision
- Traceability
- Understandability
- Availability
- Portability
- Recoverability
What is Information Quality?
Information which consistently meets all knowledge worker and end-customer expectations.
What is Information Quality Management?
Information Quality Management is the application of sound quality principles and processes to information as a product of business and manufacturing processes.
What is the Information Quality Management process?
- Assess product and process quality
- Control processes that produce the product
- Improve processes that product the product to meet or exceed customers’ expectations and requirements.
What are three categories of information quality?
1, Definition and information architecture - data and information are “products”, so they require “product specifications”.
- Content - the actual values in a database must represent facts about the real world: completeness and accuracy.
- Presentation - user needs timely access to relevant information so they can perform work effectively and efficiently.
What is data conformance?
Data values are consistent with the attribute definition
