Filter and Refine Principle (FRP) is a general computational strategy in computer science. FRP is used broadly across various disciplines, particularly in information retrieval, database management, and pattern recognition, which efficiently processes large sets of objects through a two-stage approach: filtering and refinement.
The filtering stage quickly eliminates less promising or irrelevant objects from a large set using efficient, less resource-intensive algorithms. This stage is designed to reduce the volume of data that needs to be processed in the more resource-demanding refinement stage.
Following filtering, the refinement stage applies more complex and computationally expensive techniques to the remaining objects to achieve higher accuracy via finer-grained processing. This stage is essential for obtaining the desired quality and precision in the results.
FRP is a general method for completing a computationally intensive task as quickly as possible (Filter and Refine Strategy), which is important in scenarios where managing the inherent trade-offs between speed and accuracy is crucial. Its implementations span various fields and applications, from database indexing/query processing, and information retrieval to machine learning and big data analytics. Its implementation helps in optimizing systems to better manage the inherent trade-offs between speed and accuracy.