A hybrid prediction and search approach for flexible and efficient exploration of big data.

This paper presents a hybrid prediction and search approach (HPS) for building visualization systems of big data. The basic idea is training a regression model to predict a coarse range on the dataset and then searching target records that satisfy the query conditions within the range. The prediction reduces the storage cost without preprocessing a data structure storing aggregate values of queriable attribute range combinations. Meanwhile, the search eliminates the prediction bias inevitable for machine learning models. Experiments on multiple open datasets demonstrate HPS's comparable query speed to existing techniques and the potential of continuous performance improvement by investing more hardware resources. In addition, the feature of returning original records instead of aggregate values brings better use flexibility, enabling to construct visualization systems with display/query functions that are unavailable for existing techniques. [ABSTRACT FROM AUTHOR]