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The entity disambiguation task partitions the records belonging to multiple persons with the objective that each decomposed partition is composed of records of a unique person. Existing solutions to this task use either biographical attributes, or auxiliary features that are collected from external sources, such as Wikipedia. However, for many scenarios, such auxiliary features are not available,...
The paper shows that the manifestation of Hamilton principle in electric power system is tending of its states to self-optimization. Characteristic feature of these states is minimum dissipation of electric energy during its transmission. The possibility and expedience of this principle usage for optimal control of normal modes of electric power system is shown.
This paper presents an approach that formalizes and simplifies the process of forming the duty-cycle matrix of the matrix converter. This is achieved assigning of the appropriate transfer ratio with respect to the reactive component of the input current matrix converter and definition the zero component of the duty-cycle space vectors. Features of the matrix converter control with maximum achievable...
Circular microphone arrays facilitate spatial processing and analysis of sound fields in applications where the sound field sources are primarily expected from the azimuthal directions. The operating frequency bandwidth of the array depends on the array aperture and on the number of microphones. At high frequencies, spatial aliasing generates side-lobes in the array beam pattern, which limits array...
In this paper, we apply statistical mechanics methods to the problem of detection of multiple primary wireless sources by a wireless sensor network. We assume that the location of the primary sources is known, but that the channel connecting them to the sensors is random. The sensor network tries to detect which sources are emitting by employing a belief propagation algorithm. We use the Replica approach...
Most non-sinusoidal power theories have been developed from theoretical techniques, as well as relying on hypothetical and experimental networks to highlight the advantages of each. The drawback of the power theories is that no single one has been universally accepted as a benchmark for other developments. This paper will however show this weakness by means of evaluating two power theories in the...
Following the wide use of cloud services, the volume of data stored in the data center has experienced a dramatically growth which makes real-time information retrieval much more difficult than before. Furthermore, text information is usually encrypted before being outsourced to data centers in order to protect users' data privacy. Current techniques to search on encrypted data do not perform well...
Extraction of unknown independent source signals from a noisy mixture is a fundamental problem in most signal processing applications. The existing independent component analysis (ICA) algorithms have tackled this problem for complex and real valued mixtures for both super and sub Gaussian sources. However in reality super and sub Gaussian sources exist collectively in a mix. It was observed when...
Efficiency represents an important parameter that characterizes a mechanism or a machine. This value gives fundamental information about the energy that is lost during the process. Machines or mechanisms can be combined in order to build a more complex system. For example, they can be arranged as a series or as a parallel layout. For these cases, the efficiency can be easily evaluated. However, in...
The LANDMARC system is a radio frequency identification (RFID) based location system and has attracted great attention recently. In our implementation of the LANDMARC system, we have observed that some unusual large errors occur in the traditional LANDMARC. Thus, in this study, we proposed ways of resolving these problems. There are two major ideas proposed in this study. The first one is to forsake...
In this paper a procedure for construction of full order observer for linear time invariant system represented by state space description is proposed. The construction procedure makes use of the theory of generalized matrix inverse and does not presuppose the observer structure and impose no restriction on the structure of the system output matrix. The construction is straightforward and easy. Illustrative...
This paper proposes a novel framework to calibrate cameras and model a scene simultaneously using both self-calibration constraints and geometric information on parallelograms. The proposed method is a factorization-based approach solving the problem by decomposing a measurement matrix into camera and parallelogram parameters. Since the factorizationbased approach recovers all camera poses simultaneously,...
This paper proposes an improved space vector pulse width modulation (PWM) control method for a 4-switch single-phase to three-phase converter using a Quasi Z-source (QZs) network that can be utilized in induction motor drive applications. Without using any extra filtering circuits, this method can work well to reject the effect of DC-link voltage ripple on the inverter output voltage, which can be...
The subject of this paper is the homotopy continuation method (HCM) for solving basic motion planning problems. The validity of the HCM has been demonstrated for driftless control-affine systems belonging to a special class. In this paper, we study the validity of the HCM for control-affine systems with drift. A crucial step in the validation process is to establish a certain sublinear growth condition...
This paper presents a new approach for observer design for a class of nonlinear singular systems which can be transformed into a special normal form. The interest of the proposed form is to facilitate the observer synthesis for the studied nonlinear singular systems. Necessary and sufficient geometrical conditions are deduced in order to guarantee the existence of a diffeomorphism which transforms...
Sequential linear decompressors are inherently efficient and attractive for compressing test cubes with many don't cares. The test cubes are encoded by solving a system of linear equations. In continuous decompression, typically a fixed number of free variables are used to encode each test cube in a “one-size-fits-all” manner. The non-pivot free variables used in Gaussian elimination are wasted when...
Given a piecewise linear system defined by two linear systems operating each of one in each side of an hyperplane of the state space, we give a canonical form of its equations by means of a feedback and a change of variables.
This paper review the effectiveness of the parity space approach to identify faults or disturbance in a system. The most commonly used is the observer based procedures, and redundancy relationship method. This involves analytical mathematical analysis of geometry and bilinear algebra. Then, technological advances which require complex computation such as artificial intelligence and genetic algorithm...
We propose the construction of a non-binary multiple insertion/deletion correcting code based on a binary multiple insertion/deletion correcting code. In essence, it is a generalisation of Tenengol'ts' non-binary single insertion/deletion correcting code. We evaluate the cardinality of the proposed construction based on the asymptotic upper bound on the cardinality of a maximal binary multiple insertion/deletion...
The starting point of any derivation is a suitable representation of the given model. Hypercomplex numbers sometimes provide a more compact representation and more insight into a problem's structure than the reals or the complex numbers. Hence, efficient filters are needed for hypercomplex numbers as well. As there is a large zoo of different hypercomplex numbers obeying different algebras it is cumbersome...
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