Fine-grained research refers to the study of small-scale details or differences within a particular subject or field. This type of research often involves analyzing data at a very granular level in order to gain a deeper understanding of specific aspects of a topic. Fine-grained research can be used in a variety of disciplines, such as biology, linguistics, and computer science, to uncover nuanced patterns or relationships that may not be readily apparent at a higher level of analysis. By focusing on fine-grained details, researchers can often make more precise observations and draw more accurate conclusions about the subject being studied.