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A novel procedure to validate the existence of clusters of the Malaysian lady foot shape measurement is proposed in this study. The Cophenetic Correlation Coefficient (CPCC) index is used to determine the optimal linkage method and distance measure. Mixture distribution confirmed the number of clusters. Three foot shape features that are Left Foot Length (LFL), Left Foot Breadth (LFB) and Left Ball...
Dermoscopy is the in vivo technique of skin surface microscopy which is frequently used in visual examination of the skin. With the rise in the usage of smartphones, many smartphone attachments have been developed that enable dermoscopy on a phone but these attachments are very expensive and are available only for high-end phones. We have developed a novel 3D printed clip-on that can convert any smartphone...
Neural networks are capable of learning rich, nonlinear feature representations shown to be beneficial in many predictive tasks. In this work, we use these models to explore the use of geographical features in predicting colorectal cancer survival curves for patients in the state of Iowa, spanning the years 1989 to 2013. Specifically, we compare model performance using a newly defined metric – area...
Spatiotemporal event sequences (STESs) are the ordered series of event types whose evolving region-based instances frequently follow each other in time and are located closeby. Previous studies on STES mining require significance and prevalence thresholds for the discovery, which is usually unknown to domain experts. As the quality of the discovered STESs is of great importance to the domain experts...
To try to decrease the preference of the attribute values for information gain and information gain ratio, in the paper, the authors puts forward a improved algorithm of C4.5 decision tree on the selection classification attribute. The basic thought of the algorithm is as follows: Firstly, computing the information gain of selection classification attribute, and then get an attribute of the information...
Matrix Factorization (MF) is a very popular method for recommendation systems. It assumes that the underneath rating matrix is low-rank. However, this assumption can be too restrictive to capture complex relationships and interactions among users and items. Recently, Local LOw-Rank Matrix Approximation (LLORMA) has been shown to be very successful in addressing this issue. It just assumes the rating...
A healthy gut microbiota is helpful to human host in many aspects, including providing nutrients, protection from pathogens, and maturation of immune responses. But the high price, strict sampling process, time consuming strategy of the metagenomic sequencing, as well as its complex data analysis, limits the application and promotion of personal microbiota evaluation in commercial market. Here we...
In the urban landscape, sculpture is vital to represent culture tradition of the city. It is a soul part of whole landscape. This paper uses the main city in Chinas park or green place as the research object and selects 100 representative samples for quantitative evaluation of the garden sculpture by SBE method. By using correlation analysis, variance analysis, stepwise regression method, it determines...
Smart city or urban wisdom is the new goal of urban development. In view of how to develop the wisdom city better, this paper analyzes the present situation of wisdom city development in China, and uses the entropy weight method to construct a new intelligent city evaluation system with reference to the existing wisdom city evaluation scheme. According to the data of Beijing, Tianjin and Shanghai,...
It is found that the GARCH (1,1) model has a good fitting effect on the time series by the statistical analysis of the logarithmic yield of the closing price of the Shanghai Composite Index. Therefore, this paper first uses the model GARCH (1,1) predicts the daily closing price of the Shanghai Composite Index, and then uses the Fourier series to correct the predicted residuals to obtain the final...
Device screen size, design layout and resolution are some of the device context parameters which impact video quality on mobile devices. In this paper, through subjective tests, we evaluate the impact of mobile device pixel density on the video quality. We then, through the subjective test, propose a video quality model that takes pixel density into consideration. The proposed model was evaluated,...
In this paper, we propose a work flow for processing and analysing large-scale tracking data with spatio-temporal marks that uses an infrastructure for machine learning methods based on a meta-data representation of point patterns. The tracking log (IP address) of cyber security devices usually maps to geolocation and timestamp, such data is called spatiotemporal data. Existing spatio-temporal analysis...
Emotion recognition using EEG signals has become a hot research topic in the last few years. This paper aims at providing a novel method for emotion recognition using less channels of frontal EEG signals. By employing the asymmetry theory of frontal brain, a new method fusing spatial and frequency features was presented, which only adopted two channels of frontal EEG signals at Fp1 and Fp2. In order...
Nowadays with enlargement of power grid and increasing renewable energy integration, uncertainties and randomness challenge traditional power system analysis methods. Scenarios are widely applied to deal with power system uncertainties. Especially power flow examination in transmission expansion planning needs typical scenarios to verify normal power flow, and provide useful information for auxiliary...
When analyzing competition in telecommunication markets it is fundamental to take into account their specific characteristics. Moreover, it is important to understand the temporal evolution of competition as a result of multiple contextual factors. For these reasons the present study analyzes competition in mobile telecommunications, measured through the Lerner Index, and explains its evolution through...
Based on the inductive power transfer (IPT), the contactless approach allows safe and comfortable operations of battery charging for Electric Vehicles (EVs). In this paper, a contactless system particularly suitable for E-bike battery charging is proposed. A practical realization of the system has been carried out, aiming at the system evaluation in terms of working and efficiency. Through a phase...
PV based distributed generators are inverter based and employ a switching scheme to inject power into the grid. The most common and commercially used technique involves the Pulse Width Modulation (PWM) controlled technique. Although PWM based technique is widely used, it is not affirmative to conclude that hysteresis controlled technique could be dismissed completely. A comparative evaluation and...
As more number of distributed generators like PV are penetrated into the power system network, the interaction of the filter elements associated with PV inverter and rest of the distribution system elements on network resonance needs to be investigated. Although the recent investigation of network resonance is focusing only on distributed generators like PV, the impact from distribution lines coming...
The increase in penetration levels of distributed generators like PV and Wind in a distribution system makes the IEEE 519 standard to be a vital aspect towards power quality. The network resonance has been described by IEEE 519 as a major contributor towards the harmonic distortion. Non-linear loads such as transformers, machines, silicon-controlled rectifiers (SCRs), solid state devices, power transistors,...
This paper presents a methodology for optimizing the size of energy storage system (ESS) for maximizing the capture of energy regenerated by a train. Besides, minimization of energy consumption from the substation, in order to obtain a return on investment, has also been explored. A standard structure of rail transit system has been used here for analysis. The optimization process takes into account...
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