Nearest neighbor

Xem 1-14 trên 14 kết quả Nearest neighbor
  • This paper introduces a new training set condensation technique designed for mixtures of labeled and unlabeled data. It finds a condensed set of labeled and unlabeled data points, typically smaller than what is obtained using condensed nearest neighbor on the labeled data only, and improves classification accuracy. We evaluate the algorithm on semisupervised part-of-speech tagging and present the best published result on the Wall Street Journal data set.

    pdf5p hongdo_1 12-04-2013 7 2   Download

  • Chapter 3: Nearest neighbor based classifiers is Introduction; Nearest Neighbor algorithm, Variants of the NN algorithm, Data Reduction, Prototype reduction, Z-score normalization, Modified k-Nearest Neighbor algorithm and somethings else.

    ppt34p cocacola_10 08-12-2015 12 1   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Dependent Multilabel Classification Method Derived from the k-Nearest Neighbor Rule

    pdf14p dauphong13 09-02-2012 25 4   Download

  • Distributional similarity is a useful notion in estimating the probabilities of rare joint events. It has been employed both to cluster events according to their distributions, and to directly compute averages of estimates for distributional neighbors of a target event. Here, we examine the tradeoffs between model size and prediction accuracy for cluster-based and nearest neighbors distributional models of unseen events.

    pdf8p bunrieu_1 18-04-2013 22 2   Download

  • Invite you to consult the lecture content "Discriminative and generative methods for bags of features" below. Contents of lectures introduce to you the content: Image classification, discriminative methods, nearest neighbor classifier, classification, support vector machines. Hopefully document content to meet the needs of learning, work effectively.

    ppt22p quanghuy_tpv 01-11-2015 6 2   Download

  • Một số tên gọi khác của phương pháp học dựa trên các láng giềng gần nhất (Nearest neighbor learning) • Instance-based learning • Lazy learning • Memory-Memory based learning

    pdf78p phuonggm 30-09-2012 141 64   Download

  • The process of collecting and analyzing the data is critical in healthcare as it constitutes the basis for categorization of patient health problems. Data collected in medical practice ranges from free form text to structured text, numerical measurements, recorded signals, and imaging data.

    pdf352p hyperion75 22-01-2013 30 6   Download

  • We prove that the diffusion coefficient for the two dimensional asymmetric simple exclusion process with nearest-neighbor-jumps diverges as (log t)2/3 to the leading order. The method applies to nearest and non-nearest neighbor asymmetric simple exclusion processes. 1. Introduction The asymmetric simple exclusion process is a Markov process on {0, 1}Z with asymmetric jump rates. There is at most one particle allowed per site and thus the word exclusion. The particle at a site x waits for an exponential time and then jumps to y with rate p(x − y) provided that the site is not occupied.

    pdf30p tuanloccuoi 04-01-2013 29 5   Download

  • Vector seed selection was applied to the aforementioned eigenspace images, or multi- spectral images, to obtain initial seeds. The algorithm of seeded region growing was further adopted to divide the multi-spectral images into many small regions. The algorithm of region merging was employed to merge similar regions as well as to combine smaller regions with the nearest neighboring regions.

    pdf402p wawawawawa 27-07-2012 22 4   Download

  • STIFF with shock, Naomi Heckscher stood just inside the door to Cappy's one-room cabin, where she'd happened to be when her husband discovered the old man's body. Her nearest neighbor—old Cappy—dead. After all his wire-pulling to get into the First Group, and his slaving to make a farm on this alien planet, dead in bed! Naomi's mind circled frantically, contrasting her happy anticipations with this shocking actuality. She'd come to call on a friend, she reminded herself, a beloved friend—round, white-haired, rosy-cheeked; lonely because he'd recently become a widower.

    pdf15p transang7 25-01-2013 23 2   Download

  • We propose a mixed language query disambiguation approach by using co-occurrence information from monolingual data only. A mixed language query consists of words in a primary language and a secondary language. Our method translates the query into monolingual queries in either language. Two novel features for disambiguation, namely contextual word voting and 1-best contextual word, are introduced and compared to a baseline feature, the nearest neighbor. Average query translation accuracy for the two features are 81.37% and 83.72%, compared to the baseline accuracy of 75.50%. ...

    pdf8p bunrieu_1 18-04-2013 16 2   Download

  • Analytical expressions for the ratio of the root mean square fluctuation in atomic positions on the equilibrium lattice positions and the nearest neighbor distance and the mean melting curves of bcc binary alloys have been derived. This melting curve provides information on Lindemann’s melting temperatures of binary alloys with respect to any proportion of constituent elements and on their euctectic points. Numerical results for some bcc binary alloys are found to be in agreement with experiment. Keywords: Lindemann’s melting temperature, eutectic point, bcc binary alloys. ...

    pdf8p tuanlocmuido 19-12-2012 26 1   Download

  • The challenges of Named Entities Recognition (NER) for tweets lie in the insufficient information in a tweet and the unavailability of training data. We propose to combine a K-Nearest Neighbors (KNN) classifier with a linear Conditional Random Fields (CRF) model under a semi-supervised learning framework to tackle these challenges. The KNN based classifier conducts pre-labeling to collect global coarse evidence across tweets while the CRF model conducts sequential labeling to capture fine-grained information encoded in a tweet. ...

    pdf9p hongdo_1 12-04-2013 12 1   Download

  • Analytical expression for the Displacement-displacement Correlation Function (DCF) C R has been derived based on the derived Mean Square Relative Displacement (MSRD) σ and the Mean Square Displacement (MSD) u for fcc 2 2 crystals. The effective interaction potential of the system has been considered by taking into account the influences of nearest atomic neighbors, and it contains the Morse potential characterizing the interaction of each pair of atoms.

    pdf8p tuanlocmuido 19-12-2012 30 1   Download


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