ZoomTucker

[Verse] Given a temporal dense tensor and an arbitrary time range, how can we efficiently obtain latent factors in the range? Tucker decomposition is a fundamental tool for analyzing dense tensors to discover hidden factors, and has been exploited in many data mining applications. However, existing decomposition methods do not provide the functionality to analyze a specific range of a temporal tensor. [Chorus] In this paper, we propose Zoom-Tucker, a fast and memory-efficient Tucker decomposition method for finding hidden factors of temporal tensor data in an arbitrary time range. The existing methods are one-off, with the main focus on performing Tucker decomposition once for a whole input tensor. [Verse] Although a few existing methods with a preprocessing phase can deal with a time range query, they are still time-consuming and suffer from low accuracy. [Chorus] In this paper, we propose Zoom-Tucker, a fast and memory-efficient Tucker decomposition method for finding hidden factors of temporal tensor data in an arbitrary time range. [Outro] [Hook] Zoom-Tucker (Zoom-Tucker) a fast and memory-efficient Zoom-Tucker (Zoom-Tucker) decomposition method Zoom-Tucker (Zoom-Tucker) a fast and memory-efficient Zoom-Tucker (Zoom-Tucker) decomposition method [Verse] Although a few existing methods with a preprocessing phase can deal with a time range query, they are still time-consuming [Chorus] In this paper, we propose Zoom-Tucker, a fast and memory-efficient Tucker decomposition method for finding hidden factors of temporal tensor data in an arbitrary time range. [Hook] Zoom-Tucker (Zoom-Tucker) a fast and memory-efficient Zoom-Tucker (Zoom-Tucker) decomposition method Zoom-Tucker (Zoom-Tucker) a fast and memory-efficient Zoom-Tucker (Zoom-Tucker) decomposition method [Outro] [Hook] Zoom-Tucker (Zoom-Tucker) a fast and memory-efficient Zoom-Tucker (Zoom-Tucker) decomposition method Zoom-Tucker (Zoom-Tucker) a fast and memory-efficient Zoom-Tucker (Zoom-Tucker) decomposition method [Outro] Zoom-Tucker (Zoom-Tucker) Zoom-Tucker (Zoom-Tucker)