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Sequence

Sequence是数据中一个特殊存放等差数列的表,该表受数据库系统控制,任何时候数据库系统都可以根据当前记录数大小加上步长来获取到该表下一条记录应该是多少,这个表没有实际意义,常常用来做主键用。不过各个数据库厂商没有一个统一的标准--各有各的一套对Sequence的定义和操作。
  • The algorm of viterbi. You talk to your friend three days in a row and discover that on the first da

    The algorm of viterbi. You talk to your friend three days in a row and discover that on the first day he went for a walk, on the second day he went shopping, and on the third day he cleaned his apartment. You have two questions: What is the overall probability of this Sequence of observations? And what is the most likely Sequence of rainy/sunny days that would explain these observations? The first question is answered by the forward algorithm the second question is answered by the Viterbi algorithm. These two algorithms are structurally so similar (in fact, they are both instances of the same abstract algorithm) that they can be implemented in a single function:

    标签: discover viterbi algorm friend

    上传时间: 2016-02-16

    上传用户:xc216

  • Determining embedding dimension for phase-space reconstruction using a geometrical construction. It

    Determining embedding dimension for phase-space reconstruction using a geometrical construction. It is very important reference for time forecast in chaos Sequence.

    标签: reconstruction construction Determining phase-space

    上传时间: 2013-12-23

    上传用户:weiwolkt

  • The first task at hand is to set up the endpoints appropriately for this example. The following code

    The first task at hand is to set up the endpoints appropriately for this example. The following code switches the CPU clock speed to 48 MHz (since at power-on default it is 12 MHz), and sets up EP2 as a Bulk OUT endpoint, 4x buffered of size 512, and EP6 as a Bulk IN endpoint, also 4x buffered of size 512. This set-up utilizes the maximum allotted 4-KB FIFO space. It also sets up the FIFOs for manual mode, word-wide operation, and goes through a FIFO reset and arming Sequence to ensure that they are ready for data operations

    标签: appropriately The endpoints following

    上传时间: 2013-12-02

    上传用户:dianxin61

  • This project aim was to build wireless software modem for data communication between two computers

    This project aim was to build wireless software modem for data communication between two computers using an acoustic interface in the voice frequency range (20Hz– 20,000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz – 20,000Hz) and the receiving antenna is a microphone (frequency response of: 100Hz – 16,000Hz). The test files used as information files were text files. This goal was attained both in an incoherent scheme and in a coherent scheme. Build under Matlab code, our modem uses OFDM (orthogonal frequency division multiplexing) modulation, synchronization by LMS Sequence, channel estimation (no equalizer) via pilot tones. The symbols are either PSK or ASK for a constellation size of 2 or 4. To optimize the probability of error, these symbols were mapped using Gray mapping. Report

    标签: communication computers software wireless

    上传时间: 2014-05-29

    上传用户:wangdean1101

  • 1) Write a function reverse(A) which takes a matrix A of arbitrary dimensions as input and returns a

    1) Write a function reverse(A) which takes a matrix A of arbitrary dimensions as input and returns a matrix B consisting of the columns of A in reverse order. Thus for example, if A = 1 2 3 then B = 3 2 1 4 5 6 6 5 4 7 8 9 9 8 7 Write a main program to call reverse(A) for the matrix A = magic(5). Print to the screen both A and reverse(A). 2) Write a program which accepts an input k from the keyboard, and which prints out the smallest fibonacci number that is at least as large as k. The program should also print out its position in the fibonacci Sequence. Here is a sample of input and output: Enter k>0: 100 144 is the smallest fibonacci number greater than or equal to 100. It is the 12th fibonacci number.

    标签: dimensions arbitrary function reverse

    上传时间: 2016-04-16

    上传用户:waitingfy

  • runs Kalman-Bucy filter over observations matrix Z for 1-step prediction onto matrix X (X can = Z)

    runs Kalman-Bucy filter over observations matrix Z for 1-step prediction onto matrix X (X can = Z) with model order p V = initial covariance of observation Sequence noise returns model parameter estimation Sequence A, Sequence of predicted outcomes y_pred and error matrix Ey (reshaped) for y and Ea for a along with inovation prob P = P(y_t | D_t-1) = evidence

    标签: matrix observations Kalman-Bucy prediction

    上传时间: 2016-04-28

    上传用户:huannan88

  • Interface for Microsoft Audio Compression Manager. - Delphi Source The ACM uses existing driver i

    Interface for Microsoft Audio Compression Manager. - Delphi Source The ACM uses existing driver interface hooks to override the default mapping algorithm for waveform audio devices. This allows the ACM to intercept device-open calls. After a call has been intercepted, the ACM can perform a variety of tasks to process the audio data, such as inserting an external compressor or decompressor into the Sequence.

    标签: Compression Interface Microsoft existing

    上传时间: 2013-12-13

    上传用户:541657925

  • ofdm信道特性 Channel transmission simulator Channel transmission simulator % % inputs: % sig2 - noi

    ofdm信道特性 Channel transmission simulator Channel transmission simulator % % inputs: % sig2 - noise variance % Mt - number of Tx antennas % Mr - number of Rx antennas % x - vector of complex input symbols (for MIMO, this is a matrix, where each column % is the value of the antenna outputs at a single time instance) % H - frequency selective channel - represented in block-Toeplitz form for MIMO transmission % N - number of symbols transmitted in OFDM frame % % outputs: % y - vector of channel outputs (matrix for MIMO again, just like x matrix) % create noise vector Sequence (each row is a different antenna, each column is a % different time index) note: noise is spatially and temporally white

    标签: transmission simulator Channel inputs

    上传时间: 2016-07-22

    上传用户:kelimu

  • The task of clustering Web sessions is to group Web sessions based on similarity and consists of max

    The task of clustering Web sessions is to group Web sessions based on similarity and consists of maximizing the intra- group similarity while minimizing the inter-group similarity. The first and foremost question needed to be considered in clustering W b sessions is how to measure the similarity between Web sessions.However.there are many shortcomings in traditiona1 measurements.This paper introduces a new method for measuring similarities between Web pages that takes into account not only the URL but also the viewing time of the visited web page.Yhen we give a new method to measure the similarity of Web sessions using Sequence alignment and the similarity of W eb page access in detail Experiments have proved that our method is valid and e币cient.

    标签: sessions clustering similarity Web

    上传时间: 2014-01-11

    上传用户:songrui

  • 实现8比特字节的RS纠错编码

    实现8比特字节的RS纠错编码,可以指定极性校验字节数目,能产生的最大校验序列长度为255字节(含极性校验字节).This is an implementation of a Reed-Solomon code with 8 bit bytes, and a configurable number of parity bytes. The maximum Sequence length (codeword) that can be generated is 255 bytes, including parity bytes.

    标签: 比特 字节 RS纠错编码

    上传时间: 2016-08-24

    上传用户:思琦琦