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Word representation is one of the basic word repressentation methods in natural language processing, which mapped a word into a dense real-valued vector space based on a hypothesis: words with similar context have similar meanings. Models like NNLM, C&W, CBOW, Skip-gram have been designed for word embeddings learning, and get widely used in many NLP tasks. However, these models assume that one...
The existence and variability of wave energy resources of the Bohai Sea, Yellow Sea and East China Sea are studied using the 10-year (January 1st, 2003-December 31st, 2012) numerical hindcast wave data. The numerical model is a third-generation wave model developed by Key Lab of MArine Science and NUmerical Modeling, State Oceanic Administration (SOA), China and called MASNUM-WAM (Wave Model). The...
He growth of the online data provides the user a access to information on the Internet but also creates the challenges to obtain the valuable knowledge. In this paper we focus on news text classification, which is meaningful for information provider to organize and display the news but also for the users to reach the valuable information easily. A hierarchy method based on LDA and SVM is proposed...
The distributed system's scale increases gradually so that traditional survivability evolution methods based on mathematical model can't be applied. Firstly, Quality of Service (QoS) being the manifestation of system viability is analyzed in this paper. Secondly, a calculation method for the correlations between Qos is presented, and then a quantifiable evolution method for key attributes and distributed...
A detailed discussion on contributions from feature attributes to the classifying attribute in the nonlinear classification model based on the Choquet integral is given in this paper. The work provides a new understanding to the geometric structure of the model with contribution rates from the feature attributes towards the classification, as well as the interaction among them.
The main difference between cloud computing and traditional enterprise internal IT services is that the owner and the user of cloud IT infrastructures are separated in cloud. This change requires a security duty separation in cloud computing. Cloud service providers (CSP) should secure the services they offer and cannot exceed the customers' authorities. Currently, no traditional information security...
Optimization-based methods have been used for data separation in different domains and applications since 1960s. The commonality of those methods is to separate data by minimizing the overlapping between the groups and regard contribution from all the attributes toward the target of classification is the sum of every single attribute. However, the interaction among the attributes in the data is not...
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