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- 저자 : Miao, Chensi (검색결과 1,035 건)
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Link Prediction Algorithm for Signed Social Networks Based on Local and Global Tightness
( Miao-miao Liu ),( Qing-cui Hu ),( Jing-feng Guo ),( Jing Chen ) 한국정보처리학회 2021 Journal of information processing systems Vol.17 No.2
Given that most of the link prediction algorithms for signed social networks can only complete sign prediction, a novel algorithm is proposed aiming to achieve both link prediction and sign prediction in signed networks. Based on the structural balance theory, the local link tightness and global link tightness are defined respectively by using the structural information of paths with the step size of 2 and 3 between the two nodes. Then the total similarity of the node pair can be obtained by combining them. Its absolute value measures the possibility of the two nodes to establish a link, and its sign is the sign prediction result of the predicted link. The effectiveness and correctness of the proposed algorithm are verified on six typical datasets. Comparison and analysis are also carried out with the classical prediction algorithms in signed networks such as CN-Predict, ICN-Predict, and PSNBS (prediction in signed networks based on balance and similarity) using the evaluation indexes like area under the curve (AUC), Precision, improved AUC′, improved Accuracy′, and so on. Results show that the proposed algorithm achieves good performance in both link prediction and sign prediction, and its accuracy is higher than other algorithms. Moreover, it can achieve a good balance between prediction accuracy and computational complexity.
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Miao Miao 한국마케팅과학회 2019 Journal of Global Fashion Marketing Vol.10 No.1
Many retailers have recently been building a greater variety of store formats and attempting to provide a superior shopping experience through their store environment in order to increase the possibility of customer revisitation and customer loyalty. However, less research pays attention to the issue of how, and to what extent, the different store formats have on impacting customer satisfaction and loyalty building. In order to improve the understanding of the satisfaction– loyalty link in the context of retail internationalization, we survey a Japanese fashion company – Nice Claup – that segmented the Chinese market by operating multiple retail stores and each retail store plays a discrete role of cultivating customer loyalty. Through 388-customer survey data, the results suggest that while attitudinal loyalty positively and directly influences behavioral loyalty, satisfaction indirectly drives behavioral loyalty through the mediating effects of attitudinal loyalty. The implication is that an application of implementing retail internationalization with adopting multiple store formats on different types of customers and customer behavioral loyalty can be transferred by offering multi-brands store more effectively than the single-brand store in the Chinese fashion market.
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Miao-miao Luo,Lu-jing Ren,Sheng-lan Chen,Xiao-jun Ji,He Huang 한국생물공학회 2016 Biotechnology and Bioprocess Engineering Vol.21 No.6
Vitamin K2 (menaquinone or MK) plays an important role in blood clotting, cardiovascular disease, and anti-osteoporosis. A novel bacterial strain was isolated and identified as Bacillus natto based on 16SrDNA sequencing and LC-MS analysis. The objective of this study was to improve the extraction efficiency and productivity of MK-7 from B. natto. Acid-heating method efficiently disrupted B. natto cells for MK-7 extraction. Bacillus natto had a wide range of pH (5.0 ~ 9.0) for optimal growth. Its MK-7 yield was increased when rotation speed was increased to 200 rpm. The highest MK-7 yield was obtained when glycerol and soy peptone were used in the growth media. Batch fermentation was subsequently tested in 5 L bioreactor, which gave a high productivity of MK-7 (at 0.60 mg/L/h). A positive correlation between MK-7 yield and sporulation ratio was also found. This study provides valuable information on the extraction and production of menaquinone-7 from B. natto under submerged fermentation condition.
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Miao-miao Feng,Ya-fen Wang,Xuan Cai,Hong-cai Zhang,Jian-xiong Xu 한국식품과학회 2022 Food Science and Biotechnology Vol.31 No.6
In this study, peanut hulls powder (PHP) wastreated via mechanical activation (MA) and divided intothree groups (control, PHP150 and PHP250). Physicochemicalproperties including mean particle size distribution(MPSD), powder properties, solubility and in vitro proteindigestibility of PHP were then investigated. The resultsshowed that MA could decrease the particle size of PHP bydestroying its crystal structure, resulting in an increase ofamorphization and a decrease of crystallinity and crystallinesize. The results of in vitro protein digestibility and crudefi ber contents showed that MA increased the protein digestibilityof PHP by 43.32% and 74.70% ( P < 0.05), while crudefi ber content was decreased by 0.42% and 26.65% ( P < 0.05). These fi ndings indicated a large application potential of MAin PHP treatment.
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