predictive policing

(left) #print ' Left_size: ', Left_size left_label=[row[-1] for row in left Right_size=len (right) right_label=[row[-1] For row in right] loss + = var (left_label) *left_size + var (right_label) *right_size return loss The code that gets the leaf node's predictive value: #决定输出标签 (Take out the label value of the leaf node data, calculate the average) def decide_label (data): output=[row[-1] for row in data] return mea

probability distribution D, and then give the label to it by using the correct tag function f. (h is the predictive result, F is known as the relational function) 4 measure Success Classifier (predictive) Error: That is the error of H, that is, the probability of H (x)!=f (x), where x is a random sample collected according to distribution d.form, given a domain subset a⊂x, probability distribution d,d (a)

affects the quality of the subsequent frames in the same group); 6.I frame is the base frame (first frame) of frame group GOP, only one I frame in a group; 7.I frames do not need to consider motion vectors; 8.I frames account for a large amount of data. I frame coding process: (1) To make intra prediction and decide the frame prediction mode. (2) The pixel value minus the predicted value and the residual error. (3) Transform and quantify the residual error. (4) Variable length coding and arithm

information (inferred)) Generally divided into: lossless compression and lossy compression There are many methods of compression coding, mainly divided into the following four categories: (1) pixel coding, (2) predictive coding, (3) Transformation coding; (4) Other methods. The so-called pixel coding means that each pixel is processed separately during encoding, regardless of the correlation between pixels. Several methods commonly used in pixel codi

of a time series is stable when and only if all its statistical characteristics are independent of time (is a constant about time).The method of judging: Stable data is no trend (trend), no periodicity (seasonality); That is, its mean value, which has a constant amplitude on the timeline, and its variance, tends to be the same stable value on the timeline. You can use Dickey-fuller test for hypothesis testing. (another article introduction) 3. Parameters and mathematical forms of Arima Arima mo

1 What is OpenvswitchOpenvswitch, referred to as OvS, is a virtual switching software that is used primarily for virtual machine VM environments, as a virtual switch that supports Xen/xenserver, KVM, and VirtualBox multiple virtualization technologies.In this virtualized environment of a single machine, a virtual switch (vswitch) has two main functions: passing traffic between VM VMS and enabling communication between VMs and outside networks.The entire OvS code is written in C. The following fe

, comfortable not human." "A person who is particularly accommodating to himself, particularly tolerant, and particularly indulgent, is not capable of an amplifier." 　　 No matter on what occasion, a person should be self-policing, self-discipline, especially in the individual alone, can do "the wealth of the non-rationale, not the matter of reason", you will have a different life. 　　 Think well and be right in your thinking. 　　 People this life, in th

clicked by a user? We want to get this value to help make the decision on shoes not on the shelves, and the advertising show does not show. This value must be between 0~1, but sell obviously does not meet this interval requirement. Then the logistic equation was introduced to make normalization. Again, the value is not the probability value defined in mathematics. So now that we're not getting the probability, why do we have to do this to 0~1 the value? The benefit of normalization is that the

PrefaceUML is composed of dynamic graphs and static graphs, and the state diagram is one of the most important diagrams in dynamic graphs. definitionused to describe all possible states of a particular object and the transitions between states caused by the occurrence of various events.Purposestudy the complex behavior of classes, roles, subsystems, or components.constituent elementsStatusdefinition: Refers to a condition or condition in the life cycle of an object in which the object satisfies

object changes.States are represented by rounded rectanglesInitial state and final state (Initial and final states)The initial state is represented by a solid dot, and the final state is represented by a circular inline dot.2. Transfer (Transitions)A transfer (transitions) is a relationship between two states that indicates that an object will perform certain actions in the source state (in the original) and enter the target state when a particular event occurs and a particular

, Link validity: Shard, cross-transfer, compressionINPUT INTERFACE:Classify, mark, policingOUTPUT INTERFACE:Congestion management, mark, congestion avoidance, shaping, policing, compressing, fragmentation and interleavingQoS implementation methods:1,qos CLI (emphasis)2,auto QoS3,sdm4, Traditional QoS command line: no unified modelQOS CLI:1, establish model definition traffic classification: class A, Class B, class CDefinition class Map,class MAP No se