Evolving Recommender System for Mobile Apps

Xiao Xia,Xiaodong Wang,Xingming Zhou 한국산학기술학회 2013 SmartCR Vol.3 No.3

The explosive growth of mobile apps gives rise to the significant challenge of app discovery. For this reason, Google Play utilizes a collaborative filtering approach for recommending apps to users by analyzing user behavior. Those recommendations help users discover apps by referring to the experiences of other users. However, their choices may also be limited because most users only know about a limited number of apps. To eliminate such constraints, we propose a novel recommendation method utilizing global information about apps. We generate recommendations by both analyzing the metadata and measuring the similarity between apps, leveraging the Latent Semantic Index method. To understand both methods, we further measure the diversity within them. Through those measurements, we not only gain better understanding of both recommendation methods but also discover new knowledge about user preferences. Such measurements also identify the necessity and potential to evolve the existing system. We therefore propose a diversity measurement?based evolution framework for the development of mobile app recommender systems. To implement the framework, we further model the system evolution as a multi-criteria optimization problem and design a rank aggregation scheme to solve it. Preliminary evaluations verified the promising effectiveness of our framework and method based on a data set of 103,348 apps.

한·중 연어 대조를 위한 연어 개념 구축과 범주 한정

소효하 ( Su¸ Xiao-xia ),최순희 ( Cui¸ Shun-ji ) 한민족어문학회 2021 韓民族語文學 Vol.- No.93

본 연구는 한국어 '연어'(collocation)와 중국어 '搭配'를 논의함으로써 한·중 연어 대조를 위한 연어 개념을 구축하는 데 목적을 둔다. 최근 한·중 연어 대조 연구가 활발해진 것에 비하면 한국어 연어에 상응하는 중국어 개념에 대한 이론적 논의가 많이 부족하다. 영어 'collocation'에 대하여 일반적으로 한국어에서는 연어라고, 중국어에서는 '搭配'라고 한다. 본고는 한국어 연어와 중국어 搭配에 관한 논의를 살펴봄으로써 두 가지 개념은 일치하지 않는다고 지적하였다. 그리고 搭配의 유형을 분석한 결과 特定搭配/有限组合/受限搭配/限制性搭配 등을 한국어 연어에 상응하는 개념으로 볼 수 있으며, 이 중 본고에서 주장하는 연어 판별 기준을 고려해 '特定搭配'가 가장 적합하다고 보았다. 또한 일차적으로 '의미 해석의 투명성'을, 이차적으로 '어휘 선택 제약'을 연어와 特定搭配를 판별하는 기준으로 제시하고 그들의 범주를 규정하였다. The purpose of this study was to establish the concept of collocation for the Korean-Chinese collocation contrast by discussing Korean "collocation" and Chinese "搭配". Compared to recent active studies on Korean-Chinese collocation, there is a lack of theoretical discussion on Chinese concepts corresponding to Korean collocation. This paper points out that these two concepts do not match, looking at discussions on Korean collocation and Chinese 搭配. After analyzing the type of 搭配, "特定搭配/有限组合/受限搭配/限制性搭配" can be considered as a corresponding concept to Korean collocation, among which "特定搭配" is the most appropriate one considering the collocation discrimination criteria proposed in this paper. In addition, in terms of the criteria for collocation or 特定搭配, this study proposed "meaning interpretation of transparency" as the primary criterion and "lexical selection restrictions" as the secondary standard. This study also specified their category.

Study on Fuzzy Catastrophe Risk Model Based on Fuzzy Theory

Xiaoxia Zhu 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.8

In this paper, we analyzed the essential meaning of the catastrophe risk on the basis of many results that is the bottleneck of the catastrophe risk analysis is complex. One way to resolve or alleviate this problem is to analyze the risk from the viewpoint of fuzzy logic-fuzzy catastrophic risk (FCR) analysis. We propose the concept of synthetic effect, present its axiomatic foundation, and further establish a FCR model based on synthetic effect as well as the general solution model. Finally, we specify the model by considering catastrophe risk in Shanghai. The results indicate that the method is not only accommodates the existing fuzzy decision-making methods, but also successfully incorporates the decision preference into the optimization process. Therefore, the FCR model can be widely used in many fields such as complex systems optimization and decision-making.

Attractors and quasi-attractors of a flow

XIAOXIA WANG,CHUNYAN ZUO 한국전산응용수학회 2007 Journal of applied mathematics & informatics Vol.23 No.1

In this paper, the connection among the attractor, the attractor neighborhood and the domain of influence are investigated. A necessary and sufficient condition of the existence of the quasi-attractor is established. Some results of Conley in [2] are generalized.

Group Decision-Making Method for Dynamic Cloud Model Based on Cumulative Prospect Theory

Xiaoxia Wang,Fengbao Yang,Dawei Li,Feifei Zhang 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.10

Group decision-making is a situation faced when individuals collectively make a choice from the alternatives before them. Aiming to the drawback that not all plans can be evaluated by a single expert during group decision-making process, a group decision-making method for dynamic cloud distribution is proposed in this paper based on cumulative prospect theory. First, experts and plans were divided into groups according to the classification rule, and plans were described with the cloud model. The expectation, the entropy and the super entropy decision matrix were structured respectively. Then, the maximum and minimum values in decision matrix were set as positive and negative reference points. The parameter values of cumulative cloud prospect were calculated and the synthesis prospect values of every group were obtained. Finally, the plans were sorted based on the mean of synthesis prospect values for every group, and illustrated by specific examples. The ranking results show that the proposed method is rationality and practicability. So the proposed method can be widely used in group decision-making of grouping scheme or grouping expert.

One-Dimensional Topological Entities Matching for Heterogenous Data Exchange

Xiaoxia Li,Fazhi He,Xiantao Cai,Zhiyong Huang (사)한국CDE학회 2010 한국CAD/CAM학회 국제학술발표 논문집 Vol.2010 No.8

In the process of feature-based data exchange (FBDE), one-dimensional topological entities are always used as references or operational objects in the source CAD system. To ensure FBDE, the corresponding one-dimensional topological entities in the target CAD system should be found to match the source ones. In this paper we describe in detail an algorithm for supporting the match for FBDE. The algorithm has been used in the procedure recovery architecture. It has efficiently improved the import algorithm used in the UPR.

Beryllium-7 and Lead-210 are Associated with an Increase in the Arctic Oscillation: Evidence from Atmospheric Aerosols in a Remote Tropical Region in East Asia

Xiaoxia Chen,Wuhui Lin,Xianwen He,Liangliang Feng,Kuo-Ying Wang 한국기상학회 2022 Asia-Pacific Journal of Atmospheric Sciences Vol.58 No.1

The Arctic Oscillation (AO) accounts for a large fraction of recent decadal climate trends in Northern Hemisphere (NH) high latitudes. In East Asia, an elevated AO index (AOI) was associated with warmer temperatures in middle- to high-latitude regions, colder temperatures over low-latitude regions, and elevated ozone intrusion from the stratosphere. Elevated beryllium-7 (7Be) is produced in the stratosphere. Few studies have discussed the relationship between 7Be and the AO. Here, we identify the AO signature in 7Be and lead (Pb)-210 observed at a tropical ambient monitoring site in Nanning (22.8°N, 108.5°E) during the December 2014–December 2017 period. Our results show that the 7Be and 210Pb concentrations are positively and significantly correlated with the AOI (P < 0.01). These results show that elevated 7Be and 210Pb are associated with an increase in the AOI, reflecting air masses originating from NH high latitudes and vertically from the high-latitude upper troposphere and lower stratosphere regions to tropical latitudes in East Asia. These results have been verified with ozonesonde data without seasonality and with two meteorological data sets. Our results are also confirmed by observational data over the Pacific regions. We conclude that the AO exerts impacts over the tropical regions in East Asia, and 7Be can be used as a tracer to track the impacts of the AO.

Hybrid monotonic inclusion measures for interval-valued hesitant fuzzy sets

Xiaoxia Ren,Hong Wang 원광대학교 기초자연과학연구소 2017 ANNALS OF FUZZY MATHEMATICS AND INFORMATICS Vol.13 No.5

The inclusion measure indicates the degree to which a given partially ordered set is contained in another one. Hybrid monotonic inclusion measure is the rational generalization of inclusion measure. So, the main purpose of this paper is to introduce the hybrid monotonic inclusion measure for interval-valued hesitant fuzzy sets (IVHFSs). Firstly, we present the construction approaches to hybrid monotonic inclusion measures between any two interval-valued hesitant fuzzy elements (IVHFEs) under different order relationships in extended environment. In addition, a new partial order relationship $\leq_{\vee}$ for IVHFEs is also defined, and then some hybrid monotonic inclusion measures under the new partial order $\leq_{\vee}$ for IVHFEs and IVHFSs will be constructed and be proved in detail. Finally, we present some new formulas to calculate the similarity measure and fuzzy entropy derived from the hybrid monotonic inclusion measure for IVHFSs.

Cultural Awareness and Translation Strategies in Literary Translation

Xiaoxia Ji,Hongmei Ruan 한국외국어대학교 통번역연구소 2019 한국외국어대학교 통번역연구소 학술대회 Vol.2019 No.07

With the emergence of foreign “cultural turn” in the 1980s, cultural translations have become more and more important. Translation studies are no longer limited to simple linguistic analysis and comparative analysis between source text and target text, beginning to consider broader issues related to context, history, and tradition. Scholars have paid more attention to the cultural factors in their works, put forward a series of cultural translation theories and regarded translation behavior as an intercultural communication activity. As the main body of translation, translators should not only have profound bilingual ability and bilingual cultural knowledge, but also have sensitive cultural awareness, so as to successfully convey the information and meaning of the original text. The translator’s cultural consciousness refers to the translator’s way of thinking, which is the conscious or unconscious judgment and sensitive cognition of culture. It runs through the whole translation process and restricts the translator’s choice of cultural translation strategies. The research corpus of this thesis is the English translation of Pearl S. Pearl S. Buck is a writer who devotes herself to the cultural exchange between China and the West and a translator who promotes the Water Margin to the world. This paper compares the translation of four-character, proverbs and customs in the source and target texts. Pearl S. Buck adopts different translation strategies according to different languages and culture characteristics, making the translation on the basis of the faithful original text, as far as possible in line with the reader’s expectation. It is of great practical significance to explore these cultural characteristics and their translation.

Multi-path Routing Improved Protocol in AODV Based on Nodes Energy

Xiaoxia Qi,Qijin Wang,Fan Jian 보안공학연구지원센터 2015 International Journal of Future Generation Communi Vol.8 No.1

Aiming at energy-constrained of Ad Hoc network, this paper proposes a multi-path routing protocol (EM-AODV)I n AODV that based on nodes energy. EM-AODV designs methods of obtaining nodes energy by upgrading the route discovery and route maintenance process of AODV, calculates the path of comprehensive energy derived path priority by routes total hops and nodes energy to format the multi-path routing mechanism. The energy as the metric prerequisite during the routing process, by setting nodes energy bound and balancing nodes data forwarding to postpone network lifetime. Simulation results show that EM-AODV has lower average end-to-end delay, well improve the energy consumption.