(which must be 3d ).
// Add two vectors, P = p + qPoint_3d pointadd (point_3d P, point_3d q ){P. x + = Q. X; p. Y + = Q. Y; p. Z + = Q. Z;Return P;}
// Multiply vector and scalar P = C * PPoint_3d pointtimes (double C, point_3d p ){P. x * = C; p. y * = C; p. z * = C;Return P;}
// Create a 3D vectorPoint_3d makepoint (double A, double B, double C ){Point_3d P;P. x = A; p. Y = B; p. z = C;Return P;}
This is basically a three-dimensional function written in C. She uses the U variable and the array
then re-Identify the labeled samples that conflict with the constraints.
(Iii)Correct the tags of these samples, add them to the training set, and re-train the classifier.
This document describes the process of this classifier (bootstrapping process)Known as P-N Learning:
3. Online Learning target detector from video data:
Strategy: we consider type of real-time detectors that are based on a scanning window strategy. the input image is scanned into SS position and scales, at each sub-window a b
documents. We can either delete the selected element by pressing the DELETE key on the keyboard, or modify the properties of each element by double-clicking on the element property and setting its value. Note that changes to the HTML structure may not work for page update events. If you want the changes to be fixed, you can use the Greasemonkey script. Third, debug JavaScript script with Firebug Ajax applications typically involve JavaScript, XML, and on-demand information retrieval. They are o
1. IntroductionWhen we run the machine learning program, especially when adjusting the network parameters, there are usually many parameters to be adjusted, the combination of parameters is more complicated. In accordance with the principle of attention > Time > Money, manual adjustment of attention costs by manpower is too high and is not worth it. The For loop or for loop-like approach is constrained by too-distinct levels, concise and flexible, with high attention costs and error-prone. This
Naive Bayesian algorithm is to look for a great posteriori hypothesis (MAP), which is the maximum posteriori probability of the candidate hypothesis.As follows:In Naive Bayes classifiers, it is assumed that the sample features are independent from one another:Calculate the posterior probability of each hypothesis and choose the maximum probability, and the corresponding category is the result of the sample classification.Advantages and DisadvantagesVery good for small-scale data, suitable for mu
-julia
Generalized linear model packages written by Glm-julia
Online Learning
Glmnet-gmlnet's Julia Packaging edition, suitable for lasso/elastic mesh models.
clustering-basic functions of data clustering: K-means, Dp-means, etc.
Support Vector machine under the Svm-julia.
Kernel Density estimator under kernal density-julia
dimensionality reduction-Descending dimension algorithm
A non-negative matrix decomposition packa
subsequent certifications.The maximum likelihood estimator of the parameter θ is obtained below, and the likelihood function is:where function 1{expression} is defined as follows: When expression is true, the value of the function is 1; otherwise 0. The nature of φ can be exploited by 1{·} Further simplification.Logarithmic likelihood function:Define the loss function:To make the likelihood function maximum, simply minimize the loss function. Use the
offload, is also a point that can be extended. It is more appropriate to add to the larger paper than to locate the algorithm.Based on the above two points, the positioning algorithm first put aside.[1] Chan Y T, Ho K C. A simple and efficient estimator for hyperbolic location[j]. IEEE transactions on Signal Processing, 1994, 42 (8): 1905-1915.[2] Cong L, Zhuang W. Hybrid Tdoa/aoa Mobile User location for wideband CDMA Cellular Systems[j]. IEEE trans
information gain
Building a decision Tree
Random Forest
K Nearest neighbor--an algorithm of lazy learning
Summarize
The fourth chapter constructs a good training set---data preprocessing
Handling Missing values
Eliminate features or samples with missing values
Overwrite missing values
Understanding the Estimator API in Sklearn
Working with categorical data
Splitting a dataset in
Animation: API11 new features, if you do not only do some animation to view, but also do some click-Touch action on the view, you can use the property animation, because the property animation will change the location of the view. Property animation class has Valueanimator, Objectanimator, Animatorset.
Here's a description of the two property animations
valueanimator Value Animation , it is not used to do some animation of view, it is only for the two values of an excessive animation (in time
.
(3) Uniform distribution of uniform
(4) Shape parameters (shape parameter)
(5) Freezing a distribution
Passing the LOC and scale keywords time and again can become quite (annoying).
(6) Broadcasting (broadcast)
3. Specific Points (specific point) for discrete distributions (discrete distribution)
The PDF is replaced the probability mass function PMF.
(1) hypergeometric distribution (ultra-geometrical distribution)
4. Build Your own distributions
(1) makeing a continuous distribution (rv_
methods associated with property animations:
3.1 Settranslationx method
This method directly changes the method of the View property, because it is sometimes not necessary to use an animation effect.
View.settranslationx (x);//3.0 after
3.2 Valueanimator Class
Valueanimator only defines and executes the animation flow, and does not have the logic to directly manipulate the property value, you need to add the monitoring of the animated update and execute the Custom anima
selects a cost-only access path based on the available access path, table, or index statistics. Therefore, in time to update the statistics, to avoid outdated statistics so that the optimizer select a wrong execution plan.
The CBO consists primarily of query converters (queries Transformer), evaluator (estimator), and plan Builder (planning generator).
First, query optimizer , because the form of query SQL statement may affect the resulting execution
DifferenceThe number. Using the minimum variance method to determine the most consistent line involves looking for the least predicted variance
mAnd
bThe estimated value.
Two basic methods can be used to find estimates that satisfy the minimum variance method.
mAnd
b。 In the first method, you can use a numeric search procedure to set different
mAnd
bValues and evaluate them, and ultimately determine the estimate that produces the minimum variance. The second approach is to use calculus to find
determine the timeout interval, and how to determine the retransmission frequency.For each connection, TCP manages 4 different timers.(1) Retransmission timer is used and when desired to receive confirmation from the other end.(2) stick to the timer to keep the window size information constantly flowing, in time to close the other end of its receive window.(3) The live timer detects how the other end of a space connection crashes or restarts.(4) The 2MSL timer measures the time when a connectio
algorithm does not need to train, the forecast sample can find the nearest sample directly through the given sample to classify accordingly:
Knn.predict (x), for example x = [[3, 5, 4, 2]]
linear SVM Classification :
From SKLEARN.SVM import linearsvcLinearsvc (loss= ' L1 ') or L2
From the above two examples can be seen, we have different types of algorithms "estimator" given to model variables, model in the training samples to learn, only n
different Results if the background is changed; A method of detecting and recognising hand gestures using opencv–from This tutorial you can learn I to apply A E Fficient the Detect and recognize the hand gesture based on convexity by detection. This is has a high accuracy to recognize the gestures compared with the well-known method based on detection of hand C Ontour; Hand gesture detection and recognition using OpenCV 2–in This article your can find the code for Hand and Gesture de Tection ba
To build the process of executing a plan: compiler: Divided into three parts:
2. Optimizer:--including three parts
Query Converter RBO-->CBO, currently the CBO, optimizer_mode--all_rows parameter values, suitable for OLTP. First_rows_n suitable for pagination, OLAP.
Query Converter:
View Merge-views are connected directly with the table in the view SQL statement.
predicate propulsion, non-nesting of subqueries-related subqueries; Or--union merging
Cost
of D, make the training process more stable and the variance of the gradient is lower. Although this objective function is similar to the RL method, the dog is more capable of reducing estimator variance (it is strongly recommended to look at the 3.2 analysis of the original text, and to analyze that the new objective function still works when the D is optimal and the D is trained but not to the optimal).
2. The generation of a longer sequence needs
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