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The popularity of multi-view panoramic videos has been considerably increased for producing Virtual Reality (VR) content, due to its immersive visual experience. We argue in this paper that PSNR is less effective in assessing visual quality of compressed panoramic videos than Sphere-based PSNR (S-PNSR), in which sphere-to-plain mapping of panoramic videos is considered. Thus, the conventional rate...
This article constructs a three dimensional customer segmentation model based on customer lifetime value, customer satisfaction and customer activity, which more accurately divides customers into different groups. The corresponding variables are obtained by RFM model, Kano model and BG/NBD model. The customer segmentation model provides ten groups of customers with corresponding marketing strategies,...
In the wake of growing explosion of data and variable data format, collaborative filtering algorithm as a technology of E-commerce recommendation system cannot satisfy the requirement. Taking this as a starting point, this paper proposes a collaborative filtering algorithm based on MapReduce by using the MapReduce technology to realize the parallel filtering algorithm. In this algorithm, the data...
FITS(Flexible Image Transport System) is the most widely used data format in astronomy. The size of one FITS file ranges from Megabytes(MB) to Gigabytes(GB), even to Terabytes(TB), and astronomers are among the first researchers to encounter Big Data. For most cases astronomers are only interested in certain small sub-area of time series image. However loading the whole raw FITS file from HDD(Hard...
With the rapid development of sensor technologies, in nowadays various types of sensors are deployed around us as a basis to build a smart environment. It is without doubt that how to deal with the huge amount of data collected by various sensors in an efficient way and to transform these data to useful information for people to make use of has become an important research topic. The vast amount of...
Communication is the life-blood of a project, whether permanent or temporary. It is essential for project stakeholders to identify and evaluate communication efficiency, which can reveal the relationships of responsibilities, powers and interests among stakeholders. This paper explores a new evaluation model of project communication based on cloud gravity centre theory. To assess project communication...
A search-as-you-type system computes answers on-the-fly as a user types in a keyword query character by character. We study how to support search-as-you-type on data residing in a relational DBMS. We focus on how to support this type of search using the native database language, SQL. A main challenge is how to leverage existing database functionalities to meet the high-performance requirement to achieve...
Wind turbine due to economical benefit and environment consciousness has gotten the fast development in these years. Comparing the running experience of American with TPC, we got the same result- high failure rate even 30% in 2008∼2009 and long average repairing period [1]. Reliability of wind turbine is critical to extract maximum amount of energy from the wind and promote the economic performance...
Component-based development has gained a lot of attention in recent years. As a software development paradigm, it enhances the reusability and reduces the complexity but it also brings new challenges to Component-based System (CBS) reliability especially for deadlock problem. Since the CBS has a unique character which is component based, the composition might easily cause the deadlock of component...
Today, internet of things is on the rapid development stage. Scientific measures for supply chain performance which based on internet of things is an important content of the supply chain management. This article establishes the performance evaluation index system which based on internet of things from five aspects. They are financial, customer, business process, node coordination and information...
The methods of documentary data collecting, mathematical statistics as well as the grey weight analysis in the grey theory system are used to analyze the influencing factors in the 400m performance. Results indicate that: the time used in the first and fourth 100m of the race exerts great influence for the final result. Therefore, the training method needs to be improved in order to raise the competitiveness...
By using SPSS 17.0, compared the Physical Health T-test results of 102 Han national students from Department of Physical Education, Southwest University with the results of 102 Uygur Students who are individually from Institute of Physical Education of xinjiang Normal University and Hotan Teachers College, the analysis shows: 1, there are notable differences of the height, MM (Muscle Mass) and bone...
An approximate string query is to find from a collection of strings those that are similar to a given query string. Answering such queries is important in many applications such as data cleaning and record linkage, where errors could occur in queries as well as the data. Many existing algorithms have focused on in-memory indexes. In this paper we investigate how to efficiently answer such queries...
A new psychological evaluation method was studied in personnel selection - drawing projection test, control test method was applied in this paper. In the simulation of recruitment scene, both drawing projection test and normal psychological evaluating scale were adopted to do psychological test for experiment group, and the test results were compared and analyzed. Analysis founds that drawing projection...
Hohhot area as excessive exploitation of groundwater, the water level declining gradually, if not change this state of irrational exploitation may result in depletion of groundwater resources, groundwater drainage, land subsidence and other serious problems. In this paper, evaluation of the sustainability of groundwater resources in the administrative districts in Hohhot show that south area of Hohhot...
Search-based advertising services provided by search engines enable companies to promote their products to internet users based on their queries is now a major online advertising channel. In most search based advertising services, a company sets a budget, selects keywords, bid for each keyword and pay for each click received. Thus the profit of the company highly lies on the reward of each keyword,...
The project risk assessment is an important basis for construction enterprises to select the bidding project and make decisions during the bidding phase. In this paper, based on the thoughts of idealization and the combination of objective and subjective ideals, the project risk assessment model of Rough set-TOPSIS is proposed. Firstly, adopting Rough set theory, the objective weight of each index...
This paper uses fuzzy neural network method to establish simulation model about the evaluations of customers' beer tastes and preference degree. It explains the methods of building, training and simulating networks in the development environment of MATLAB software. And it does network training and error testing by the actual data to prove this model is feasible.
The plots of thinning intensity with five different treatments of C(control), L(35.48%), M(43.15%) , H(57.66%) and G(81.85%) on the undergrowth, carried out in the Larix principis-rupprechtii plantations of Saihanba forestry centre, Hebei province of China, were repeated four times respectively in order to find out the effects of thinning on community characteristics of Larix principis-rupprechtii...
TASTIER is a research project on the new information-access paradigm called type-ahead search, in which systems find answers to a keyword query on-the-fly as users type in the query. In this paper we study how to support fuzzy type-ahead search in TASTIER. Supporting fuzzy search is important when users have limited knowledge about the exact representation of the entities they are looking for, such...
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