QBE

QBE

Query by example (QBE) is a search strategy that allows users to look at all the fields in a database and create search conditions based on their specific needs. It is commonly used in content-based systems that use texts/voice, melody/beat audio samples, or images as input. QBE enables users to search for information by providing an example of what they are looking for, rather than using specific keywords or complex search queries.From: The Handbook of Software for Engineers and Scientists [2018], Image Is All for Music Retrieval: Interactive Music Retrieval System Using Images with Mood and Theme Attributes [2023]

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Published in Phillip A. Laplante, Dictionary of Computer Science, Engineering, and Technology, 2017

Phillip A. Laplante

query by example (QBE) a query language developed by IBM in which the user formulates a query by filling in an on-screen template of relations rather than explicitly specifying a structured query. The names of attributes and relations are displayed as part of the template.

Block-based pseudo-relevance feedback for image retrieval

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Published in Journal of Experimental & Theoretical Artificial Intelligence, 2022

Wei-Chao Lin

Relevance feedback can be defined as follows. Suppose n images are stored in a CBIR database for which a query-by-example interface is provided for users to submit a query image for purposes of retrieval. Let Q be the query image example and I a database image, which are represented by feature vectors and , respectively, where m is the number of low-level features extracted. To estimate the visual similarity between Q and I, the normalised Euclidean metric is generally used:

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Block-based pseudo-relevance feedback for image retrieval