This document discusses various clustering techniques used in data mining. It begins by defining clustering as an unsupervised learning technique that groups similar objects together. It then discusses advantages of clustering such as quality improvement and reuse opportunities. Several clustering methods are described such as K-means clustering, which aims to partition observations into k clusters where each observation belongs to the cluster with the nearest mean. The document concludes by discussing advantages of K-means clustering such as its linear time complexity and its use for spherical cluster shapes.
This document discusses the implications of substitution in object-oriented programming. It explores issues like memory allocation, the meaning of assignment, and differences between equality and identity testing. Key challenges include not knowing object sizes until runtime, which leads to complex semantics or dynamic objects and garbage collection. Dynamic semantics also tend toward pointer semantics for assignment and non-guarantees for equality. The programmer must be able to redefine equality as needed but this can introduce paradoxes.
Modeling of Granular Mixing using Markov Chains and the Discrete Element Methodjodoua
The document presents a method for modeling granular mixing using Markov chains and the discrete element method (DEM). It motivates the use of Markov chains to efficiently simulate granular mixing as an alternative to computationally expensive DEM simulations. The theory and definitions of Markov chains and operators are provided. The method is applied to simulate mixing in a cylindrical drum, and the effects of the number of states, time step, and learning time are investigated. Properties of the resulting operator like the invariant distribution and mixing rates are analyzed to characterize the mixing dynamics.
This document proposes a novel framework called smooth sparse coding for learning sparse representations of data. It incorporates feature similarity or temporal information present in data sets via non-parametric kernel smoothing. The approach constructs codes that represent neighborhoods of samples rather than individual samples, leading to lower reconstruction error. It also proposes using marginal regression rather than lasso for obtaining sparse codes, providing a dramatic speedup of up to two orders of magnitude without sacrificing accuracy. The document contributes a framework for incorporating domain information into sparse coding, sample complexity results for dictionary learning using smooth sparse coding, an efficient marginal regression training procedure, and successful application to classification tasks with improved accuracy and speed.
This paper proposes a new method called Local Collaborative Ranking (LCR) for recommender systems. LCR assumes the user-item rating matrix is locally low-rank, meaning the matrix is low-rank within neighborhoods defined by a distance metric on user-item pairs. LCR combines a recent local low-rank approximation approach with empirical risk minimization for ranking losses. Experiments show LCR outperforms other state-of-the-art recommendation methods. LCR is also easily parallelizable, making it suitable for large-scale industrial applications.
This document summarizes a research paper that proposes two approaches called LLORMA for constructing local low-rank matrix approximations. The approaches approximate an observed matrix M as a weighted sum of several low-rank matrices, where each low-rank matrix is accurate in a local region of M. This relaxes the assumption that M has global low-rank structure. The paper analyzes the accuracy of the local low-rank modeling approaches and shows they improve prediction accuracy over classical low-rank approximation methods on recommendation tasks.
Local Model Checking Algorithm Based on Mu-calculus with Partial OrdersTELKOMNIKA JOURNAL
The propositionalμ-calculus can be divided into two categories, global model checking algorithm
and local model checking algorithm. Both of them aim at reducing time complexity and space complexity
effectively. This paper analyzes the computing process of alternating fixpoint nested in detail and designs
an efficient local model checking algorithm based on the propositional μ-calculus by a group of partial
ordered relation, and its time complexity is O(d2(dn)d/2+2) (d is the depth of fixpoint nesting, n is the
maximum of number of nodes), space complexity is O(d(dn)d/2). As far as we know, up till now, the best
local model checking algorithm whose index of time complexity is d. In this paper, the index for time
complexity of this algorithm is reduced from d to d/2. It is more efficient than algorithms of previous
research.
This document discusses strategies for parallelizing spectral methods. Spectral methods are global in nature due to their use of global basis functions, making them challenging to parallelize on fine-grained architectures. However, the document finds that spectral methods can be effectively parallelized. The main computational steps in spectral methods are the calculation of differential operators on functions and solving linear systems, both of which can exploit parallelism. Domain decomposition techniques may also help parallelize computations over non-Cartesian domains.
This document discusses various clustering techniques used in data mining. It begins by defining clustering as an unsupervised learning technique that groups similar objects together. It then discusses advantages of clustering such as quality improvement and reuse opportunities. Several clustering methods are described such as K-means clustering, which aims to partition observations into k clusters where each observation belongs to the cluster with the nearest mean. The document concludes by discussing advantages of K-means clustering such as its linear time complexity and its use for spherical cluster shapes.
This document discusses the implications of substitution in object-oriented programming. It explores issues like memory allocation, the meaning of assignment, and differences between equality and identity testing. Key challenges include not knowing object sizes until runtime, which leads to complex semantics or dynamic objects and garbage collection. Dynamic semantics also tend toward pointer semantics for assignment and non-guarantees for equality. The programmer must be able to redefine equality as needed but this can introduce paradoxes.
Modeling of Granular Mixing using Markov Chains and the Discrete Element Methodjodoua
The document presents a method for modeling granular mixing using Markov chains and the discrete element method (DEM). It motivates the use of Markov chains to efficiently simulate granular mixing as an alternative to computationally expensive DEM simulations. The theory and definitions of Markov chains and operators are provided. The method is applied to simulate mixing in a cylindrical drum, and the effects of the number of states, time step, and learning time are investigated. Properties of the resulting operator like the invariant distribution and mixing rates are analyzed to characterize the mixing dynamics.
This document proposes a novel framework called smooth sparse coding for learning sparse representations of data. It incorporates feature similarity or temporal information present in data sets via non-parametric kernel smoothing. The approach constructs codes that represent neighborhoods of samples rather than individual samples, leading to lower reconstruction error. It also proposes using marginal regression rather than lasso for obtaining sparse codes, providing a dramatic speedup of up to two orders of magnitude without sacrificing accuracy. The document contributes a framework for incorporating domain information into sparse coding, sample complexity results for dictionary learning using smooth sparse coding, an efficient marginal regression training procedure, and successful application to classification tasks with improved accuracy and speed.
This paper proposes a new method called Local Collaborative Ranking (LCR) for recommender systems. LCR assumes the user-item rating matrix is locally low-rank, meaning the matrix is low-rank within neighborhoods defined by a distance metric on user-item pairs. LCR combines a recent local low-rank approximation approach with empirical risk minimization for ranking losses. Experiments show LCR outperforms other state-of-the-art recommendation methods. LCR is also easily parallelizable, making it suitable for large-scale industrial applications.
This document summarizes a research paper that proposes two approaches called LLORMA for constructing local low-rank matrix approximations. The approaches approximate an observed matrix M as a weighted sum of several low-rank matrices, where each low-rank matrix is accurate in a local region of M. This relaxes the assumption that M has global low-rank structure. The paper analyzes the accuracy of the local low-rank modeling approaches and shows they improve prediction accuracy over classical low-rank approximation methods on recommendation tasks.
Local Model Checking Algorithm Based on Mu-calculus with Partial OrdersTELKOMNIKA JOURNAL
The propositionalμ-calculus can be divided into two categories, global model checking algorithm
and local model checking algorithm. Both of them aim at reducing time complexity and space complexity
effectively. This paper analyzes the computing process of alternating fixpoint nested in detail and designs
an efficient local model checking algorithm based on the propositional μ-calculus by a group of partial
ordered relation, and its time complexity is O(d2(dn)d/2+2) (d is the depth of fixpoint nesting, n is the
maximum of number of nodes), space complexity is O(d(dn)d/2). As far as we know, up till now, the best
local model checking algorithm whose index of time complexity is d. In this paper, the index for time
complexity of this algorithm is reduced from d to d/2. It is more efficient than algorithms of previous
research.
This document discusses strategies for parallelizing spectral methods. Spectral methods are global in nature due to their use of global basis functions, making them challenging to parallelize on fine-grained architectures. However, the document finds that spectral methods can be effectively parallelized. The main computational steps in spectral methods are the calculation of differential operators on functions and solving linear systems, both of which can exploit parallelism. Domain decomposition techniques may also help parallelize computations over non-Cartesian domains.
The document presents a method for solving fuzzy assignment problems using triangular and trapezoidal fuzzy numbers. It formulates the fuzzy assignment problem into a crisp linear programming problem that can be solved using the Hungarian method. The paper also uses Robust's ranking method to transform fuzzy costs into crisp values, allowing conventional solution methods to be applied. It aims to provide a more realistic approach to assignment problems by considering costs as fuzzy numbers rather than deterministic values.
Dear Students
Ingenious techno Solution offers an expertise guidance on you Final Year IEEE & Non- IEEE Projects on the following domain
JAVA
.NET
EMBEDDED SYSTEMS
ROBOTICS
MECHANICAL
MATLAB etc
For further details contact us:
enquiry@ingenioustech.in
044-42046028 or 8428302179.
Ingenious Techno Solution
#241/85, 4th floor
Rangarajapuram main road,
Kodambakkam (Power House)
http://www.ingenioustech.in/
This document presents a closed-form solution for a class of discrete-time algebraic Riccati equations (DTAREs) under certain assumptions. It begins with background on Riccati equations and their importance in control theory. It then provides the assumptions considered, including that the A matrix eigenvalues are distinct. The main result is a closed-form solution for the DTARE when R=1. Extensions discussed include the solution's behavior as Q approaches zero and for repeated eigenvalues. Comparisons with numerical solutions verify the closed-form solution's accuracy.
A NEW ALGORITHM FOR SOLVING FULLY FUZZY BI-LEVEL QUADRATIC PROGRAMMING PROBLEMSorajjournal
This paper is concerned with new method to find the fuzzy optimal solution of fully fuzzy bi-level non-linear (quadratic) programming (FFBLQP) problems where all the coefficients and decision variables of both objective functions and the constraints are triangular fuzzy numbers (TFNs). A new method is based on decomposed the given problem into bi-level problem with three crisp quadratic objective functions and bounded variables constraints. In order to often a fuzzy optimal solution of the FFBLQP problems, the concept of tolerance membership function is used to develop a fuzzy max-min decision model for generating satisfactory fuzzy solution for FFBLQP problems in which the upper-level decision maker (ULDM) specifies his/her objective functions and decisions with possible tolerances which are described by membership functions of fuzzy set theory. Then, the lower-level decision maker (LLDM) uses this preference information for ULDM and solves his/her problem subject to the ULDMs restrictions. Finally, the decomposed method is illustrated by numerical example.
In recent years, deep learning has had a profound impact on machine learning and artificial intelligence. At the same time, algorithms for quantum computers have been shown to efficiently solve some problems that are intractable on conventional, classical computers. We show that quantum computing not only reduces the time required to train a deep restricted Boltzmann machine, but also provides a richer and more comprehensive framework for deep learning than classical computing and leads to significant improvements in the optimization of the underlying objective function. Our quantum methods also permit efficient training of full Boltzmann machines and multilayer, fully connected models and do not have well known classical counterparts.
This document provides an overview of finite difference methods for solving partial differential equations. It introduces partial differential equations and various discretization methods including finite difference methods. It covers the basics of finite difference methods including Taylor series expansions, finite difference quotients, truncation error, explicit and implicit methods like the Crank-Nicolson method. It also discusses consistency, stability, and convergence of finite difference schemes. Finally, it applies these concepts to fluid flow equations and discusses conservative and transportive properties of finite difference formulations.
A bitemporal nested query language, BTN-SQL, is
proposed in this paper. BTN-SQL attempts to fill some gaps
present in currently available SQL standards. BTN-SQL
extends the well-known SQL syntax into two directions, the
user-friendliness support of nested relations and the effective
support of bitemporal data. The schema of a bitemporal nested
database is difficult to be understood since it is complicated
by nature; therefore, an extended approach of the Entity-
Relationship model, the BTN-ER model, is also proposed for
modelling complex bitemporal nested data.
This document proposes methods for enhancing the visualization of concept lattices generated through formal concept analysis. It discusses extracting tree structures from concept lattices to improve readability. Various criteria are proposed for selecting parent concepts when transforming a lattice into a tree, including stability, support, shared attributes between concepts, and confidence. Visualization techniques like coloring nodes based on criteria values and sizing nodes by extent/intent ratios are also suggested to aid interpretation. The methods aim to make larger datasets more explorable by extracting simpler tree representations while preserving essential lattice features and structure.
The document discusses directional derivatives and differentials in vector calculus. It defines the Gateaux differential, which generalizes the derivative to vector spaces. The Gateaux differential provides a linear approximation of functions, whether linear or nonlinear. It is linear with respect to its second argument. The Frechet derivative is then introduced as the gradient of a differentiable function, which maps the gradient to a linear operator. Methods for computing the gradient of real-valued and vector-valued functions are also presented.
This document discusses the variational formulation and Galerkin method for finite element analysis. It begins by introducing the differential formulation of physical processes using examples like heat conduction and axial loading of a bar. For the bar problem, it derives the strong form by obtaining the differential equations of equilibrium, constitutive relations, and kinematic equations, along with the essential and natural boundary conditions. It then discusses how the variational or weak formulation is needed because analytical solutions cannot be obtained for complex problems. The principle of virtual work is introduced, where equilibrium requires that the internal virtual work equals the external virtual work for any compatible set of virtual displacements.
International Journal of Mathematics and Statistics Invention (IJMSI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJMSI publishes research articles and reviews within the whole field Mathematics and Statistics, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
1. A second order tensor T is defined as a linear mapping from a vector space V to itself, such that for any vector u in V, there exists a vector w in V where T(u) = w.
2. Tensors exhibit linearity properties - the mapping is linear, so that T(u + v) = T(u) + T(v) and T(αu) = αT(u) for any scalar α.
3. Special tensors include the zero tensor (which maps all vectors to the zero vector), the identity tensor (which leaves all vectors unaltered), and the inverse of a tensor T (which undoes the mapping of T).
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
4 satellite image fusion using fast discreteAlok Padole
This document proposes a new satellite image fusion method using Fast Discrete Curvelet Transforms (FDCT) that aims to generate high resolution multispectral images while retaining both rich spatial and spectral details. The method defines a fusion rule based on local magnitude ratio in the FDCT domain to inject high frequency details from a high resolution panchromatic image into lower resolution multispectral bands. Experimental results on Resourcesat-1 LISS IV and Cartosat-1 images show the proposed FDCT fusion method spatially outperforms wavelet, PCA, high pass filtering, IHS, and Gram-Schmidt fusion methods based on entropy and QAB/F metrics.
Quantum algorithm for solving linear systems of equationsXequeMateShannon
Solving linear systems of equations is a common problem that arises both on its own and as a subroutine in more complex problems: given a matrix A and a vector b, find a vector x such that Ax=b. We consider the case where one doesn't need to know the solution x itself, but rather an approximation of the expectation value of some operator associated with x, e.g., x'Mx for some matrix M. In this case, when A is sparse, N by N and has condition number kappa, classical algorithms can find x and estimate x'Mx in O(N sqrt(kappa)) time. Here, we exhibit a quantum algorithm for this task that runs in poly(log N, kappa) time, an exponential improvement over the best classical algorithm.
This document summarizes and analyzes the performance of Newton's method, BFGS method, and SR1 method for minimizing a quadratic and convex function. It finds that:
1) Newton's method performed the best, requiring fewer iterations and achieving greater accuracy than the other methods.
2) For constrained problems, the SR1 method achieved some success due to its flexibility in not always requiring a descent direction.
3) While Newton's method has the best theoretical convergence rate, quasi-Newton methods are more applicable to complex problems as hessian inversion becomes more computationally expensive.
4) When minimizing quadratic and convex functions, Newton's method generally performs better than the other tested methods. However, the best
Inference & Learning in Linear Chain Conditional Random Fields (CRFs)Anmol Dwivedi
This mini-project will consider performing inference and learning in Linear Chain CRFs. In particular, it will consider an application to hand-written word recognition. Handwritten word recognition is a task many have explored with different methods of machine learning. Some written characters can be evaluated individually or as a whole word to account for the context in characters. In this mini-project, we use linear chain CRF models to account for context between the characters of a word to improve word recognition accuracy.
1) The document discusses the relationship between transforming entangled quantum states via local operations and classical communication (LOCC) and the theory of majorization from linear algebra.
2) Nielsen's theorem states that one entangled state can be transformed into another via LOCC if and only if the vector of eigenvalues of one state is majorized by the vector of eigenvalues of the other state.
3) The proof of Nielsen's theorem relies on five key properties, including that any two-way classical communication in an LOCC protocol can be simulated by a one-way communication protocol.
How does ‘dragging’ affect the learning of geometryvasovlaha
Dragging geometric objects in Cabri's dynamic geometry environment can affect how students solve problems and develop geometric conceptions in three key ways:
1) Students apply dragging to solve "static" geometric problems, developing dynamic problem-solving strategies not possible with paper and pencil.
2) Dragging mediates students' understanding of the relationship between geometric drawings and figures, reconstructing their view of "Cabri geometry."
3) Students describe and generalize geometric observations in Cabri in situated, tool-dependent ways, rather than context-independent terms, due to the computational environment.
A new transformation into State Transition Algorithm for finding the global m...Michael_Chou
To promote the global search ability of the original state transition algorithm, a new operator called axesion is suggested, which aims to search along the axes and strengthen single dimensional search. Several benchmark minimization
problems are used to illustrate the advantages of the improved algorithm over other random search methods. The results of
numerical experiments show that the new transformation can enhance the performance of the state transition algorithm and the new strategy is effective and reliable.
This document discusses the concept of functions in linguistics and syntactic theory. It provides examples of how functions have been modeled in different theories, such as grammars representing functions that map inputs to outputs. The document also discusses problems that have arisen with modeling language as computational functions, and proposes moving toward an interactive computation paradigm that allows for bidirectional information flow and adaptation to inputs.
Fuzzy logic can be applied in geology to deal with imprecise concepts. Fuzzy set theory involves membership functions to indicate the degree to which objects belong to sets, unlike classical set theory which involves sharp boundaries. A case study applied formal concept analysis to 9 fossils characterized by attributes like spine size and body shape. This generated a fuzzy concept lattice that revealed natural concepts and hierarchies in the data. Fuzzy similarity relations were also useful for analyzing relationships between fossils. Fuzzy logic has also been applied to problems like stratigraphic modeling, paleobiological taxonomy, and earthquake research.
The document presents a method for solving fuzzy assignment problems using triangular and trapezoidal fuzzy numbers. It formulates the fuzzy assignment problem into a crisp linear programming problem that can be solved using the Hungarian method. The paper also uses Robust's ranking method to transform fuzzy costs into crisp values, allowing conventional solution methods to be applied. It aims to provide a more realistic approach to assignment problems by considering costs as fuzzy numbers rather than deterministic values.
Dear Students
Ingenious techno Solution offers an expertise guidance on you Final Year IEEE & Non- IEEE Projects on the following domain
JAVA
.NET
EMBEDDED SYSTEMS
ROBOTICS
MECHANICAL
MATLAB etc
For further details contact us:
enquiry@ingenioustech.in
044-42046028 or 8428302179.
Ingenious Techno Solution
#241/85, 4th floor
Rangarajapuram main road,
Kodambakkam (Power House)
http://www.ingenioustech.in/
This document presents a closed-form solution for a class of discrete-time algebraic Riccati equations (DTAREs) under certain assumptions. It begins with background on Riccati equations and their importance in control theory. It then provides the assumptions considered, including that the A matrix eigenvalues are distinct. The main result is a closed-form solution for the DTARE when R=1. Extensions discussed include the solution's behavior as Q approaches zero and for repeated eigenvalues. Comparisons with numerical solutions verify the closed-form solution's accuracy.
A NEW ALGORITHM FOR SOLVING FULLY FUZZY BI-LEVEL QUADRATIC PROGRAMMING PROBLEMSorajjournal
This paper is concerned with new method to find the fuzzy optimal solution of fully fuzzy bi-level non-linear (quadratic) programming (FFBLQP) problems where all the coefficients and decision variables of both objective functions and the constraints are triangular fuzzy numbers (TFNs). A new method is based on decomposed the given problem into bi-level problem with three crisp quadratic objective functions and bounded variables constraints. In order to often a fuzzy optimal solution of the FFBLQP problems, the concept of tolerance membership function is used to develop a fuzzy max-min decision model for generating satisfactory fuzzy solution for FFBLQP problems in which the upper-level decision maker (ULDM) specifies his/her objective functions and decisions with possible tolerances which are described by membership functions of fuzzy set theory. Then, the lower-level decision maker (LLDM) uses this preference information for ULDM and solves his/her problem subject to the ULDMs restrictions. Finally, the decomposed method is illustrated by numerical example.
In recent years, deep learning has had a profound impact on machine learning and artificial intelligence. At the same time, algorithms for quantum computers have been shown to efficiently solve some problems that are intractable on conventional, classical computers. We show that quantum computing not only reduces the time required to train a deep restricted Boltzmann machine, but also provides a richer and more comprehensive framework for deep learning than classical computing and leads to significant improvements in the optimization of the underlying objective function. Our quantum methods also permit efficient training of full Boltzmann machines and multilayer, fully connected models and do not have well known classical counterparts.
This document provides an overview of finite difference methods for solving partial differential equations. It introduces partial differential equations and various discretization methods including finite difference methods. It covers the basics of finite difference methods including Taylor series expansions, finite difference quotients, truncation error, explicit and implicit methods like the Crank-Nicolson method. It also discusses consistency, stability, and convergence of finite difference schemes. Finally, it applies these concepts to fluid flow equations and discusses conservative and transportive properties of finite difference formulations.
A bitemporal nested query language, BTN-SQL, is
proposed in this paper. BTN-SQL attempts to fill some gaps
present in currently available SQL standards. BTN-SQL
extends the well-known SQL syntax into two directions, the
user-friendliness support of nested relations and the effective
support of bitemporal data. The schema of a bitemporal nested
database is difficult to be understood since it is complicated
by nature; therefore, an extended approach of the Entity-
Relationship model, the BTN-ER model, is also proposed for
modelling complex bitemporal nested data.
This document proposes methods for enhancing the visualization of concept lattices generated through formal concept analysis. It discusses extracting tree structures from concept lattices to improve readability. Various criteria are proposed for selecting parent concepts when transforming a lattice into a tree, including stability, support, shared attributes between concepts, and confidence. Visualization techniques like coloring nodes based on criteria values and sizing nodes by extent/intent ratios are also suggested to aid interpretation. The methods aim to make larger datasets more explorable by extracting simpler tree representations while preserving essential lattice features and structure.
The document discusses directional derivatives and differentials in vector calculus. It defines the Gateaux differential, which generalizes the derivative to vector spaces. The Gateaux differential provides a linear approximation of functions, whether linear or nonlinear. It is linear with respect to its second argument. The Frechet derivative is then introduced as the gradient of a differentiable function, which maps the gradient to a linear operator. Methods for computing the gradient of real-valued and vector-valued functions are also presented.
This document discusses the variational formulation and Galerkin method for finite element analysis. It begins by introducing the differential formulation of physical processes using examples like heat conduction and axial loading of a bar. For the bar problem, it derives the strong form by obtaining the differential equations of equilibrium, constitutive relations, and kinematic equations, along with the essential and natural boundary conditions. It then discusses how the variational or weak formulation is needed because analytical solutions cannot be obtained for complex problems. The principle of virtual work is introduced, where equilibrium requires that the internal virtual work equals the external virtual work for any compatible set of virtual displacements.
International Journal of Mathematics and Statistics Invention (IJMSI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJMSI publishes research articles and reviews within the whole field Mathematics and Statistics, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
1. A second order tensor T is defined as a linear mapping from a vector space V to itself, such that for any vector u in V, there exists a vector w in V where T(u) = w.
2. Tensors exhibit linearity properties - the mapping is linear, so that T(u + v) = T(u) + T(v) and T(αu) = αT(u) for any scalar α.
3. Special tensors include the zero tensor (which maps all vectors to the zero vector), the identity tensor (which leaves all vectors unaltered), and the inverse of a tensor T (which undoes the mapping of T).
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
4 satellite image fusion using fast discreteAlok Padole
This document proposes a new satellite image fusion method using Fast Discrete Curvelet Transforms (FDCT) that aims to generate high resolution multispectral images while retaining both rich spatial and spectral details. The method defines a fusion rule based on local magnitude ratio in the FDCT domain to inject high frequency details from a high resolution panchromatic image into lower resolution multispectral bands. Experimental results on Resourcesat-1 LISS IV and Cartosat-1 images show the proposed FDCT fusion method spatially outperforms wavelet, PCA, high pass filtering, IHS, and Gram-Schmidt fusion methods based on entropy and QAB/F metrics.
Quantum algorithm for solving linear systems of equationsXequeMateShannon
Solving linear systems of equations is a common problem that arises both on its own and as a subroutine in more complex problems: given a matrix A and a vector b, find a vector x such that Ax=b. We consider the case where one doesn't need to know the solution x itself, but rather an approximation of the expectation value of some operator associated with x, e.g., x'Mx for some matrix M. In this case, when A is sparse, N by N and has condition number kappa, classical algorithms can find x and estimate x'Mx in O(N sqrt(kappa)) time. Here, we exhibit a quantum algorithm for this task that runs in poly(log N, kappa) time, an exponential improvement over the best classical algorithm.
This document summarizes and analyzes the performance of Newton's method, BFGS method, and SR1 method for minimizing a quadratic and convex function. It finds that:
1) Newton's method performed the best, requiring fewer iterations and achieving greater accuracy than the other methods.
2) For constrained problems, the SR1 method achieved some success due to its flexibility in not always requiring a descent direction.
3) While Newton's method has the best theoretical convergence rate, quasi-Newton methods are more applicable to complex problems as hessian inversion becomes more computationally expensive.
4) When minimizing quadratic and convex functions, Newton's method generally performs better than the other tested methods. However, the best
Inference & Learning in Linear Chain Conditional Random Fields (CRFs)Anmol Dwivedi
This mini-project will consider performing inference and learning in Linear Chain CRFs. In particular, it will consider an application to hand-written word recognition. Handwritten word recognition is a task many have explored with different methods of machine learning. Some written characters can be evaluated individually or as a whole word to account for the context in characters. In this mini-project, we use linear chain CRF models to account for context between the characters of a word to improve word recognition accuracy.
1) The document discusses the relationship between transforming entangled quantum states via local operations and classical communication (LOCC) and the theory of majorization from linear algebra.
2) Nielsen's theorem states that one entangled state can be transformed into another via LOCC if and only if the vector of eigenvalues of one state is majorized by the vector of eigenvalues of the other state.
3) The proof of Nielsen's theorem relies on five key properties, including that any two-way classical communication in an LOCC protocol can be simulated by a one-way communication protocol.
How does ‘dragging’ affect the learning of geometryvasovlaha
Dragging geometric objects in Cabri's dynamic geometry environment can affect how students solve problems and develop geometric conceptions in three key ways:
1) Students apply dragging to solve "static" geometric problems, developing dynamic problem-solving strategies not possible with paper and pencil.
2) Dragging mediates students' understanding of the relationship between geometric drawings and figures, reconstructing their view of "Cabri geometry."
3) Students describe and generalize geometric observations in Cabri in situated, tool-dependent ways, rather than context-independent terms, due to the computational environment.
A new transformation into State Transition Algorithm for finding the global m...Michael_Chou
To promote the global search ability of the original state transition algorithm, a new operator called axesion is suggested, which aims to search along the axes and strengthen single dimensional search. Several benchmark minimization
problems are used to illustrate the advantages of the improved algorithm over other random search methods. The results of
numerical experiments show that the new transformation can enhance the performance of the state transition algorithm and the new strategy is effective and reliable.
This document discusses the concept of functions in linguistics and syntactic theory. It provides examples of how functions have been modeled in different theories, such as grammars representing functions that map inputs to outputs. The document also discusses problems that have arisen with modeling language as computational functions, and proposes moving toward an interactive computation paradigm that allows for bidirectional information flow and adaptation to inputs.
Fuzzy logic can be applied in geology to deal with imprecise concepts. Fuzzy set theory involves membership functions to indicate the degree to which objects belong to sets, unlike classical set theory which involves sharp boundaries. A case study applied formal concept analysis to 9 fossils characterized by attributes like spine size and body shape. This generated a fuzzy concept lattice that revealed natural concepts and hierarchies in the data. Fuzzy similarity relations were also useful for analyzing relationships between fossils. Fuzzy logic has also been applied to problems like stratigraphic modeling, paleobiological taxonomy, and earthquake research.
Mapping Subsets of Scholarly InformationPaul Houle
The document discusses using machine learning techniques like support vector machines (SVMs) to analyze and classify academic literature from a large online corpus like arXiv. It finds that SVMs can accurately identify documents belonging to large categories with over 10,000 documents but struggles with smaller categories of under 500 documents. To improve recall for small categories, the SVM outputs are converted to probabilities using a sigmoid function rather than relying on signed distances from the hyperplane alone.
Definite Integral and Properties of Definite IntegralShaifulIslam56
This presentation provides an overview of definite integrals. It discusses the history of integration developed by Newton and Leibniz. Definite integrals are defined as the limit of Riemann sums over partitions of an interval [a,b] of a continuous function f(x). Some key properties are that definite integrals are independent of variables of integration and reversing limits changes the sign. Definite integrals can be used to calculate areas under curves, between curves, and have many applications such as displacement, change in velocity, work, and finding volumes.
The document provides an introduction to integral calculus. It discusses how integral calculus is motivated by the problem of defining and calculating the area under a function's graph. The key points are:
1) Integration is the inverse process of differentiation, where we find the original function given its derivative. This results in families of functions that differ by an arbitrary constant.
2) Indefinite integrals represent families of functions, while definite integrals have practical uses in science, engineering, economics and other fields.
3) Standard formulae for integrals are provided that correspond to common derivative formulae, which can be used to evaluate more complex integrals.
Integral Calculus. - Differential Calculus - Integration as an Inverse Process of Differentiation - Methods of Integration - Integration using trigonometric identities - Integrals of Some Particular Functions - rational function - partial fraction - Integration by partial fractions - standard integrals - First and second fundamental theorem of integral calculus
This document summarizes key concepts in artificial intelligence planning and logic. It discusses representations like atomic, factored, and structured states. Planning approaches include state-space search, planning graphs, and situation calculus. Factored representations allow more flexible and hierarchical plans using relations between state variables. Planning graphs efficiently represent possible plan states and actions to derive heuristic estimates and extract plans.
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An Introduction to Radical Minimalism: Merge & Agree
1. Merge, Agree & Transfer Revisited
Diego Gabriel Krivochen (UNLP / Universität Potsdam)
2. Basic Tenets of Radical Minimalism
1. Language is part of the “natural world”; therefore, it is
fundamentally a physical system.
2. As a consequence of 1, it shares the basic properties of
physical systems and the same principles can be applied,
the only difference being the properties of the elements
that are manipulated in the relevant system.
3. The operations are taken to be very basic, simple and
universal, as well as the constraints upon them, which are
determined by the interaction with other systems, not by
stipulative intra-theoretical filters.
4. 2 and 3 can be summarized as follows:
3. The Strong Radically Minimalist Thesis
All differences between physical systems are
“superficial” and rely only on the characteristics of their
basic units [i.e., the elements that are manipulated],
which require minimal adjustments in the
formulation of operations and constraints [that is,
only notational issues]. At a principled level, all
physical systems are identical, make use of the same
operations and respond to the same principles.
4. Principles:
Conservation Principle: Dimensions cannot be
eliminated, but they must be instantiated in such a way
that they can be read by the relevant level so that the
information they convey is preserved.
Dynamic (Full) Interpretation: any derivational step
is justified only insofar as it increases the
informational load and/or it generates an interpretable
object.
5. On Merge
Merge is a free unbounded operation that applies to
two (smallest non-trivial number of elements) distinct
(see below) objects sharing format, either ontological
or structural. Merge is, on the simplest assumptions,
the only generative operation in the physical
world.
6. Formally:
Merge is a concatenation function, derived from
conceptual necessity.
Concatenation defines a chain of coordinates {(x, y,
z…n)WX … (x, y, z…n)WY…(x, y, z…n)Wn} where WY ≡
WX ≡ Wn or WY ≠ WX ≠ Wn. If WX ≠ WY, they must be
isodimensional.
8. On Format
Ontological format refers to the nature of the entities
involved.
Structural format refers to the way in which elements
are organized.
Ontological format is a necessary condition for Merge
to apply: the resultant structures will always consist on
formally identical objects.
9. Derivational Dynamics
Merge manipulates Tokens from a Type-Array.
LEXS is the full set of type-symbols that can be
manipulated by a computational system S, which is a
generative W.
An array is a set of types drawn from LEXS.
A token is an occurrence of a type within WX. There are
no a priori limits to the times a type can be
instantiated as a token but those required by Interface
Conditions IC.
10. A lexical item LI is a structure {X…α…√} ∈ WX, where
X is a procedural category (D, T, P), α is a n number of
non-intervenient nodes for category recognition
purposes at the semantic interface, and √ is a root.
[D…α…√] = N
[T…α…√] = V
[P…α… √] = A, Adv
11. On Agree
Standard Agree (Chomsky, 1998, 1999; Pesetsky &
Torrego, 2004, 2007): Unvalued feature(s) F in probe
search for closest valued instance of F in the goal
within its c-command domain. Top-down search.
“Reverse” Agree (Wurmbrand, 2011, Zeijlstra, 2011): The
higher element values F in the lower one, provided
that both are in the same phase
12. Problems:
Features and values substantively complicate the theory. Elements
are assigned valued-interpretable / unvalued-uninterpretable
features arbitrarily. What is more, some features are introduced into
the derivation with the sole purpose of “explaining” certain
operations (e.g., EPP in T or Wh- in C), and be then erased.
There is no reason, beyond theory-internal stipulation (for the sake
of Agree), for the same “feature” to be present in two different
locations, the probe and the goal.
The very definition of feature is not clear: Uriagereka (comments to
Chomsky, 1999) defines them as valued dimensions. However, we
find:
Binary features: [± D] (e.g., Number)
Multiple-value features: [α D], [β D], [γ D] (e.g., Case)
No-value features: [F] (e.g., EPP, Wh-, EF)
13. An Alternative: Collapse
A physical system changing linearly:
α α’ β β’
Since α and β are possible states of the system, so is their arbitrary linear
combination aα + bβ. What Schrödinger’s Equation (SE) tells us is that given
that α and β would change in the ways just indicated, their linear combination
must also change in the following way:
aα + bβ aα’ + bβ’.
These equations only hold if no “measurement” is taking place.
If a “measurement” is taking place then we must consider an entirely different
story: during the measurement, the system S must “collapse” into a state that is
certain to produce the observed result of the measurement.
14. How to apply this to Language?
Let us assume the framework outlined so far and the
following quantum dimension: [CaseX]. This dimension
comprises three possible “outcomes”: NOM sphere (φ),
ACC sphere (θ) and DAT sphere (λ). All three are possible
final states of the system, and therefore the linear
combination must also be considered a legitimate state of
the system. The dimension in abstracto could then be
expressed as follows, using SE:
Nφ + Aθ + Dλ
The factor that makes the relevant dimension collapse is
the merger of a functional / procedural node.
15. Definition:
Collapse: α collapses a quantum
dimension [ψ-D] on β –being α a procedural
category and β a root or extended projection-
iff α has scope over β, the procedural
instructions conveyed by α are specified
enough as regards distribution and there is a
local relation between α and β (there is no γ
closer to β than α that can collapse a
dimension on β).
17. No features, just dimensions –the semantically interpretable
part- comprising –in abstracto- all possible outcomes (ψ-state).
Final product is strictly componential and determined by local
relations and cumulative influence. Collapse, contrarily to
Agree, is a strictly interface-required operation, and no ad hoc
element is introduced in the working area to make it work.
No constraints on Merge (Cf. Agree).
α - β relation is interface-determined, as syntax can manipulate
quantum dimensions on their ψ-state. Locality is presupposed,
if α can collapse a quantum feature on β, it is because β has not
been transferred yet and γ is not an intervenient node. As soon
as a “suitable” procedural node is merged, collapse takes place,
even though there is no unidirectional influence determined a
priori, we work with “areas of influence”, so that elements in
local domains are in permanent interaction in the interfaces, as
interpretation is performed in real-time.
Erasure of features is banned because of the Conservation
Principle: information cannot be lost, only gained or
transformed.
18. On Transfer
Chomsky (2007: 11): “(…) optimal computation
requires some version of strict cyclicity. That will
follow if at certain stages of generation by repeated
Merge, the syntactic object constructed is sent to
the two interfaces by an operation Transfer, and
what has been transferred is no longer accessible to
later mappings to the interfaces (the phase-
impenetrability condition PIC). Call such stages
phases.” (emphasis, N.C.)
19. Problems
Massive amount of Look Ahead
Stipulative definition of transferrable objects: v*Ps and
CPs (PPs, DPs are conflictive)
Passive interfaces
20. An alternative: Invasive Interfaces
Transfer is the operation via which an Interface Level
ILX takes a fully interpretable object from W to
proceed with further computations.
Corollary: if WX interfaces with more than one IL,
Transfer applies for each IL separately.
Analyze evaluates the objects built via Merge in WX in
order to verify full interpretability in ILX.
This leads to a dynamic definition of phase:
21. On Phases:
PW is a phase in W if and only if it is the
minimal object fully interpretable in IL.
Analyze applies after every derivational step, but the
generation of “momentarily” illegible structures can be
tolerated because of Soft Crash.
22. Sample derivational steps
NS Merge (D[CaseX], √) = {D, √}
C-I2 Label {D[CaseX], √} = {D, {D[CaseX], √}} This {D} will
be taken as a unit for the purpose of future operations.
Incidentally, {D[CaseX], √} “categorizes” √ as N, following
our definition.
C-I2 Analyze: not fully interpretable unit: D has a
quantum dimension in its ψ-state.
NS Merge (P, {D[CaseX]}) = {P, {D[CaseX]}} P’s procedural
instructions collapse [CaseX] on {D} to DAT sphere.
C-I2 Label {P, {D[DAT]}} = {P, {P, {D[DAT]}}}
23. C-I2 Analyze: {D}’s referential properties depend on
the cumulative influence of Time, Aspect and
Modality. Not fully interpretable yet. Relational
element P requires another element (a figure).
NS Merge (D[CaseX], √) in parallel to (1) = {D[CaseX], √}
Labeling and Analyzing also take place. No procedural
head can collapse {D}’s Case dimension, so the
structure is not yet fully interpretable.
NS Merge by Structural Format ({D}, {P, {P, {D}}}) =
{{D}, {P, {P, {D}}}}
C-I2 Label {{D}, {P, {P, {D}}}} = {P}.
C-I2 Analyze: {D} has a [CaseX] quantum dimension
still uncollapsed. Not fully interpretable. Therefore, P
is not interpretable either.