The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The following topics are dealt with: artificial intelligence; computer architecture; computer graphics; information visualisation; image processing; high-performance computing; information security; biomedicine; database management systems; data management; IT; utility computing; and cloud computing.
Brain computer interfaces (BCI) is an area of research that is rapidly growing in the neuroscience and bioengineering fields. One popular approach to the generation of a BCI system consist in the recognition by a computer of the patterns of electrical activity on the scalp gathered from a series of electrodes. One of the problems related to the use of surface EEG is the blurring effect due to the...
Document clustering is the process of partitioning a set of unlabeled n documents into clusters such that documents in each cluster share some common concepts. Each concept is conveniently represented by some key terms. Using words as features, text data are represented as a vector in a very high dimensional vector space. However, most documents are sparse vectors, for example, more than ten thousand...
Semi-supervised learning aims to utilize unlabeled data in the process of supervised learning. In particular, combining semi-supervised learning with dimension reduction can reduce overfitting caused by small sample size in high dimensional data. By graph representation with similarity edge weights among data samples including both labeled and unlabeled data, statistical and geometric-structures in...
Automatic image annotation has become an important and challenging problem due to the existence of the semantic gap. In this paper, we present an approach based on probabilistic latent semantic analysis (PLSA) to achieve the task. In order to model training data precisely, an image is firstly represented as a bag of visual words, then a probabilistic structure with two PLSA models is employed to capture...
Software clustering is a method for increasing software system understanding and maintenance. Software designers, first use MDG graph to model the structure of software system. In MDG, system modules (e.g. files ,classes) are represented as nodes and their relationships (e.g. function calls , inheritance relationships) as directed edges that connect the nodes. Once the MDG created, clustering algorithms...
As traditional Chinese calligraphic (TCC) occupies an important place in the life of modern Chinese, there are a lot of TCC images digitalized and exhibited on the Internet. However, effective classification in them is an imperative problem need to be addressed. The paper proposes a content-based classification system that represents the visual content of TCC images by a textural feature set. Four...
The better understanding of human face perception help to create the more intelligent computer system to recognize the expression in face. In this paper, we used the adaptation paradigm and Face Action Coding System (FACS) to model the output of the human expression system, we measured the expression aftereffect in the case that facial identity was not changed and in the case that facial identity...
In general, distributed flexible manufacturing systems (FMS) scheduling problems are more complicated than the classical FMS scheduling, because it has to focus on two different issues: first, allocation of jobs to suitable factories and second, determination of the corresponding production scheduling in each factory. On the other hand in distributed FMS scheduling, maintenance usually is not considered...
Conflict can decrease performance of computer severely, such as bank conflicts reduce bandwidth of interleave multibank memory systems and conflict misses reduce effective on-chip capacity, and this incurs much conflict miss further. Conflicts can be avoided by a suitable address mapping scheme which maps the most frequently occurring patterns conflict-free. In this paper, we present a new XOR-based...
Range query in DHT based P2P network is a hot topic in recent researches. The hashing function in DHT protocols makes the data hard to keep their original order relationship. Hence range queries for such networks become difficult. This paper presents the design of Yarqs-a new schema to achieve range queries in DHT based P2P networks. By using the inherent characteristics of DHT based networks, Yarqs...
Interval type-2 fuzzy set is the most popular kind of type-2 fuzzy set, its characteristic is that all the secondary membership functions equal to 1. Though interval type-2 fuzzy sets can reduce the calculation complexity than other type-2 fuzzy sets, it loses much fuzzy information simultaneously. In order to solve this problem we propose a novel theory of triangle type-2 fuzzy sets, the formulas...
Architecture and memory system are two important factors that influence the performance of parallel processing systems. This paper based on a proposed real scalable, triple-based multi-core architecture providing hardware level support for object-oriented methodology. However, the memory wall is still the bottleneck of the whole system performance. We present hierarchical shared memory (HSM) architecture...
Computer architectures make a dramatic turn away from improving single-processor performance towards improved parallel performance through integrating many cores in one chip. However, providing directory based coherence protocols for these platforms is too complex and expensive. As a substitute, we propose a synchronization based cache coherence solution, which uses different cache policies according...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.