What Is Case Based Reasoning?

  • Editor
  • December 4, 2023

What is Case-Based Reasoning (CBR)? Simply put, it is a powerful concept in the field of artificial intelligence that mimics human problem-solving by learning from past experiences. In CBR, an AI system analyzes and solves new problems by comparing them to previously stored cases, making it a valuable tool for decision-making and problem-solving in various domains.

Looking to go more in-depth into the concept of CBR? Continue reading this article written by the savvy professionals at All About AI.

Examples of Case-Based Reasoning

  • Medical Diagnosis: In the healthcare sector, CBR systems can assist doctors by analyzing similar medical cases and suggesting diagnoses and treatment options based on past patient records. This approach helps in making accurate and timely decisions, especially in complex and rare cases.
  • Customer Support Chatbots: Chatbots equipped with CBR capabilities can provide personalized solutions to customer queries by retrieving solutions from previous interactions. This enhances customer satisfaction and reduces response time.
  • Legal Research: Legal professionals use CBR systems to find precedents and relevant cases that are similar to the current legal issues. This expedites legal research and aids in making informed decisions.
  • Recommendation Systems: Streaming platforms like Netflix use CBR to recommend movies or shows to users based on their viewing history and preferences, enhancing user engagement and content discovery.

Use Cases of Case-Based Reasoning

  • Fault Diagnosis in Manufacturing: CBR is applied in manufacturing industries to identify and rectify equipment faults by comparing current issues with past instances of similar faults, reducing downtime and maintenance costs.
  • Financial Fraud Detection: In the banking sector, CBR helps in detecting fraudulent activities by recognizing patterns and anomalies in financial transactions, protecting both institutions and customers.
  • Personalized E-Learning: Educational platforms employ CBR to tailor learning materials and recommendations to individual students, improving their learning experience and knowledge retention.
  • Art Restoration: CBR assists art conservators in restoring and preserving artworks by referencing previous restoration cases and techniques, ensuring the integrity of valuable cultural artifacts.

Pros and Cons


  • CBR systems shine when faced with dynamic and ever-changing situations, adapting seamlessly to evolving circumstances.
  • Case-based reasoning provides practical solutions grounded in real-world data, making it highly applicable to various domains.
  • Compared to other AI techniques, CBR requires minimal initial training data, expediting its implementation and reducing the need for extensive data collection.
  • CBR leverages analogies, fostering creative problem-solving by drawing parallels between past cases and current challenges.
  • CBR’s ability to store past cases for reference ensures that valuable information is preserved and readily available for future decision-making.


  • The accuracy of CBR heavily depends on the quality and relevance of historical cases, which can affect the reliability of its recommendations.
  • CBR can be computationally intensive, particularly when dealing with extensive datasets, potentially leading to longer processing times.
  • CBR may encounter difficulties when confronted with entirely novel problems that lack closely related historical cases.
  • In cases involving a high number of dimensions, CBR may struggle to efficiently process and analyze the data, impacting its effectiveness.
  • Privacy and bias concerns can arise when handling sensitive case data, requiring careful management and ethical awareness in its implementation.


What is case-based reasoning in artificial intelligence?

CBR in AI is a problem-solving approach where solutions are derived by comparing new problems to previously stored cases.

What are the 4 Rs of case-based reasoning?

The 4 Rs of CBR are Retrieve, Reuse, Revise, and Retain. These steps involve searching for relevant cases, applying them, adapting as needed, and retaining knowledge for future use.

What is an example of a case-based reasoning system?

A medical diagnosis system that suggests treatments based on past patient cases is an example of a CBR system.

Is case-based reasoning used in machine learning?

Yes, CBR is employed in machine learning to enhance decision-making by learning from historical cases and applying that knowledge to new situations.

Key Takeaways

  • CBR is an AI approach that learns from past experiences to solve new problems.
  • It finds applications in healthcare, customer support, legal research, and recommendation systems, among others.
  • The pros of CBR include adaptability, effective decision support, and knowledge retention.
  • However, it depends on data quality, faces scalability issues, and may struggle with high-dimensional data.
  • Ethical considerations regarding data privacy and bias should be taken into account when implementing CBR.


Case-Based Reasoning (CBR) serves as a powerful framework within artificial intelligence. It harnesses the collective wisdom of past experiences to tackle new challenges. In summary, CBR offers adaptability, effective decision support, and knowledge retention. This makes it a versatile tool in various fields such as healthcare, customer support, legal research, and recommendation systems.

To explore more AI-related topics, check out our comprehensive AI Knowledge Hub. Here, you can delve deeper into the fascinating world of artificial intelligence – just as you got the answer to the question, “what is case based reasoning.”

Was this article helpful?
Generic placeholder image

Dave Andre


Digital marketing enthusiast by day, nature wanderer by dusk. Dave Andre blends two decades of AI and SaaS expertise into impactful strategies for SMEs. His weekends? Lost in books on tech trends and rejuvenating on scenic trails.

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *