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.
Text classification is the foundation and core of text mining. Naive Bayes is an effective method for text classification. This paper improves the accuracy of Naive Bayes classification using improved information gain, one of methods of feature extraction, by reducing the impact of low-frequency words. In this paper, we use a widely corpus of NLTK. According to the test results, The accuracy of the...
Radio Frequency Identification (RFID) technology plays an important role in supply chain logistics and inventory control. In these applications, a series of scanning operations at different locations are often needed to cover the entire inventory (tags). In such continuous scanning scenario, adjacent scans inevitably read overlapping tags multiple times. Most existing methods suffer from low scanning...
Odor source localization is very important in real-world applications. We studied the problem of odor source localization and presented a modified particle swarm optimization algorithm for odor source localization of multi-robot. The algorithm dynamically adjusts two learning factors in the velocity update equation based on the effect of wind on self-cognition and social cognition of a particle. In...
The imbalanced data set has been reported to hinder the classification performance of many machine learning algorithms on both accuracy and speed. But extremely imbalanced data sets (3~5% positive samples) are common for many applications, such as multimedia semantic classification. In this paper, we propose a novel algorithm to automatically remove samples that have no or negative effects on classifier...
In response to image irregular movement caused by video cameras, a new algorithm of electronic Image Stability is proposed based on block matching. On this basis, the new three-step search algorithm has made the effective improvement to three step search method. The new three-step search algorithm solves the quivering problem in horizontal and vertical directions of images made by video cameras.
In this paper, the road information collection systems and processing algorithms of video signal was researched based on vision sensor, the processor of Smart car used MC9S12XS128, the hardware of Sampling system using OV7620 digital camera; The key of software part is the turn of double-array storage and processing technology, which made the Acquisition system has higher efficiency, more in line...
Swarm intelligence exhibits a number of interesting properties such as flexibility, robustness, decentralization and self-organization. The instances of these algorithms on the domains of optimization, telecommunication network, knowledge discovery and robots are obviously increased. An ant colony algorithm is proposed aiming at the basic ant colony algorithms convergence slow and be prone to plunge...
This paper introduces an energy-saving ventilation control system for the machine rooms and gives the specific description of its hardware, workflow and control algorithms. The system efficiently leads the outdoor air into the room so that the engine room is cooled down and a great deal of electricity is saved and its return air system effectively avoids the phenomenon of condensation. After one-year...
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.