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Social choice in distributed classification tasks: dealing - Inf
Social choice in distributed classification tasks: dealing - Inf

PPT - University of Maryland at College Park
PPT - University of Maryland at College Park

... Establishes all possible values by listing them Supports values(), valueOf(), name(), compareTo()… Can add fields and methods to enums Example public enum Color { Black, White } // new enumeration Color myC = Color.Black; for (Color c : Color.values()) System.out.println(c); When to use enums Natura ...
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... PROPOSED SYSTEMS:In these problems, the available information about the users is often not in the form of histograms, and the solutions proposed are often based on heuristics and practical convenience; whereas the solution we propose in this paper is specific to the setting in which the only informa ...
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Improved Hybrid Clustering and Distance

... clustering operation. The authors of [15] initialized the concept of distance-based outlier, which defines an object 'O' being an outlier, if at most 'p' objects are within the distance 'd' of 'O'. In the distance-based approach, outliers are detected as follows. Given a distance measure on a featur ...
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Linearly Decreasing Weight Particle Swarm Optimization with
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KEEL Data-Mining Software Tool: Data Set Repository, Integration of
KEEL Data-Mining Software Tool: Data Set Repository, Integration of

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... for each incoming or outgoing relation of an entity, including the related types, i.e., they are concerned with qualified relations Furthermore, we implemented approaches for generating features based on graph sub-structures using graph kernels: the Weisfeiler-Lehman Kernel [5], and the Intersectio ...
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... Let H be a hypothesis that X belongs to class C Classification is to determine P(H|X), (posteriori probability), the probability that the hypothesis holds given the observed data sample X P(H) (prior probability), the initial probability  E.g., X will buy computer, regardless of age, income, … P(X) ...
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K-nearest neighbors algorithm



In pattern recognition, the k-Nearest Neighbors algorithm (or k-NN for short) is a non-parametric method used for classification and regression. In both cases, the input consists of the k closest training examples in the feature space. The output depends on whether k-NN is used for classification or regression: In k-NN classification, the output is a class membership. An object is classified by a majority vote of its neighbors, with the object being assigned to the class most common among its k nearest neighbors (k is a positive integer, typically small). If k = 1, then the object is simply assigned to the class of that single nearest neighbor. In k-NN regression, the output is the property value for the object. This value is the average of the values of its k nearest neighbors.k-NN is a type of instance-based learning, or lazy learning, where the function is only approximated locally and all computation is deferred until classification. The k-NN algorithm is among the simplest of all machine learning algorithms.Both for classification and regression, it can be useful to assign weight to the contributions of the neighbors, so that the nearer neighbors contribute more to the average than the more distant ones. For example, a common weighting scheme consists in giving each neighbor a weight of 1/d, where d is the distance to the neighbor.The neighbors are taken from a set of objects for which the class (for k-NN classification) or the object property value (for k-NN regression) is known. This can be thought of as the training set for the algorithm, though no explicit training step is required.A shortcoming of the k-NN algorithm is that it is sensitive to the local structure of the data. The algorithm has nothing to do with and is not to be confused with k-means, another popular machine learning technique.
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