A novel systemof image retrieval, based onHadoop and Spark, is presented.Managing and extracting information from Big Data is\na challenging and fundamental task. For these reasons, the system is scalable and it is designed to be able to manage small collections\nof images as well as huge collections of images. Hadoop and Spark are based on the Map Reduce framework, but they have different\ncharacteristics. The proposed system is designed to take advantage of these two technologies. The performances of the proposed\nsystem are evaluated and analysed in terms of computational cost in order to understand in which context it could be successfully\nused.The experimental results show that the proposed system is efficient for both small and huge collections
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