Hong Kong Polytechnic University

About: Hong Kong Polytechnic University is a education organization based out in Hong Kong, China. It is known for research contribution in the topics: Tourism & Population. The organization has 29633 authors who have published 72136 publications receiving 1956312 citations. The organization is also known as: HKPU & PolyU.

Pyramid Dilated Deeper ConvLSTM for Video Salient Object Detection

Abstract: This paper proposes a fast video salient object detection model, based on a novel recurrent network architecture, named Pyramid Dilated Bidirectional ConvLSTM (PDB-ConvLSTM). A Pyramid Dilated Convolution (PDC) module is first designed for simultaneously extracting spatial features at multiple scales. These spatial features are then concatenated and fed into an extended Deeper Bidirectional ConvLSTM (DB-ConvLSTM) to learn spatiotemporal information. Forward and backward ConvLSTM units are placed in two layers and connected in a cascaded way, encouraging information flow between the bi-directional streams and leading to deeper feature extraction. We further augment DB-ConvLSTM with a PDC-like structure, by adopting several dilated DB-ConvLSTMs to extract multi-scale spatiotemporal information. Extensive experimental results show that our method outperforms previous video saliency models in a large margin, with a real-time speed of 20 fps on a single GPU. With unsupervised video object segmentation as an example application, the proposed model (with a CRF-based post-process) achieves state-of-the-art results on two popular benchmarks, well demonstrating its superior performance and high applicability.

Strengthening customer loyalty through intimacy and passion : roles of customer–firm affection and customer–staff relationships in services

Abstract: This study extends the existing satisfaction–trust–loyalty paradigm to investigate how customers' affectionate ties with firms (customer–firm affection)—in particular, the components of intimacy and passion—affect customer loyalty in services. In a bilevel model, the authors consider customer–staff and customer–firm interactions in parallel. Through a netnography study and survey research in two service contexts, they confirm (1) the salience of intimacy and passion as two underrecognized components of customer–firm affection that influence customer loyalty, (2) the complementary and mediating role of customer–firm affection in strengthening customer loyalty, (3) significant affect transfers from the customer–staff to the customer–firm level, and (4) the dilemma that emerges when customer–staff relationships are too close. The findings provide several implications for researchers and managers regarding how intimacy and passion can enrich customer service interactions and how to manage customer–st...