liquefaction calculation

Tags: Big Data System architecture diagram Database MapReduce/* Copyright notice: Can be reproduced arbitrarily, please be sure to indicate the original source of the article and the author information . */Copymiddle: Zhang JunlinExcerpt from "Big Data Day know: Architecture and Algorithms" Chapter 14, book catalogue here1. Graph calculation using MapReduceThere are relatively few studies using the MapReduce framework to calculate large-scale graph

Hello everyone, welcome back to Performance tuning training . Last week we discussed some of the problems in the cardinality calculation process in SQL Server. Today we continue with a detailed discussion of the new cardinality calculations introduced in SQL Server 2014.New Cardinality calculationAn enhancement in SQL Server 2014 is the new cardinality calculation. Last week you've learned that the old card

In the shell, especially in the shell loop, some expressions may be used to operateThis requirement can be accomplished using the expr command, such as:x=$ (expr $a + 1)Completed the calculation of the sum of $ A and 1 and assigned the value to XSimilar operators also have$a | $b if $ A nonzero then the result of the operation takes a $ A value, otherwise take $b value$a $b As long as one expression is 0, the result of the operation is 0, otherwise e

Calculation of interest on deposits. There are 1000 yuan, want to save 5 years, according to the following 5 ways to Save://1, one deposit 5 years. 2, the first deposit 2 years, after the expiry of the principal and interest to save 3 years. 3, the first deposit 3 years, after the expiry of the principal and interest to save 2 years. 4, deposit 1-year period, after the expiry of the principal and interest after the 1-year period, the continuous deposi

The calculation of the signed data type and the unsigned data type # include The "C language" signed data type and the calculation of unsigned data types

The calculation process of BP algorithm When adding the $k$ input, the input weights of the hidden layer $h$ nodes are:\[s_h^k = \sum\limits_i {w_{ih} x_i^k}\]Output of the corresponding point:\[y_h^k = f (s_h^k) = f (\sum\limits_i {w_{ih} x_i^k}) \]Similarly, the input weights of the output layer $j$ nodes are:\[s_j^k = \sum\limits_h {w_{hj} y_h^k} = \sum\limits_h {w_{hj} F (\sum\limits_i {w_{ih} x_i^k})}\]Output of the corresponding point:\[y_j^k =

The struct occupies memory calculation method:assuming that the start address of the struct is 0x00000000, the space occupied by the starting address to the current element must be an integral multiple of the next member space ( The part that does not reach the integer multiple is left blank ), when the last member is reached, that is, when calculating the total struct space, the space must be an integer multiple of the largest basic element in all

1. Title.The bookstore for the Harry Potter series of books for promotional activities, a total of 5 volumes, with numbers 0, 1, 2, 3, 4, said,A single reel is priced at $8, and the specific discount is as follows:Discount on this number2 5%3 10%4 20%5 25%Depending on the number of volumes purchased and this number, different discount rules will be applicable. The singular book only corresponds to one discount rule,For example, if you purchase two volumes of Volume 1, one volume 2, you can enjoy

derive the "large O-order" first step: "Replace all the addition constants in the runtime with constant 1", then the above calculation becomes:Total number of executions = 2n^2 + 3n + 1;The second step: "In the modified run Count function, only the highest order", where the highest order is n two timesSo the equation becomes:Total number of executions = 2n^2;Step three: "If the highest order exists and is not 1, then the constant multiplied by this i

1, Date object turn timestamp current_day 2, calculates the incremental timestamp, which is the increment of the loop per step one_day 3, loop body calculation, date variable plus increment re-assign value 4, time stamp back to date format output Current_day=2015-07-17 End_day=2014-01-01 #step 1 Timestamp_current=`date -d "$current_day" +%s` Timestamp_end=`date -d "$end_day" +%s` #Step 2 One_day=$((24*60*60)) While [ $timestamp_current -ge $time

Key words and text sets each article relevance calculation: Suppose there are tens of thousands of articles in the corpus, each article length is different, you enter the keyword or sentence, by the code to TF-IDF value to retrieve a high degree of similarity of the article. 1. TF-IDF Overview TF-IDF is a statistical method used to evaluate the importance of a word to one of the files in a set of files or a corpus. The importance of a wo

Python Manual for Function calculation small problemToday, we do this with the Python Starter Manual for function calculations and get stuck with the error. In the introduction to the General entry function for WSGI: { "errorMessage": "'NoneType' object has no attribute 'split'", "errorType": "AttributeError", "stackTrace": [ [ "File \"/var/fc/runtime/python2.7/src/server.py\"", "line 276", "in do_POST", "wsg

int main () { int a = 3; int B = a Today, I looked at the displacement operation, found that good Doboven calculate the displacement of a good complex appearance, wrote to find a small law, I do not know whether it is an existing algorithm (or my guess is not correct), now share, hope you provide comments, suggestions.Take the left displacement as an example (right displacement is not attempted due to time relationship), the above code, a left displacement of 3 bits, I guess the