Item M18: Amortization also expected calculationIn the termsM17, I applaud the virtues of laziness and procrastinate as much as possible, and I explain how laziness improves the efficiency of the program. I will adopt a different attitude in this article. There will be no laziness here. I encourage you to let the program do more than is required, in this way to improve the performance of the software. The core of this clause isover-eager Evaluation (excessive enthusiasm
Recent work has often encountered the need to deal with floating-point calculation problem, began to use the floating-point number is multiplied by 10 of the corresponding fractional digits of the decimal integer to start the calculation.For example 100.01+100.02, can be converted into (100.01*100+100.02*100)/100来 To do the calculation, but recently sent a floating point number multiplied by a 10 of the tim
Using Python to draw ROC curve and AUC value calculation, rocauc
Preface
The ROC curve and AUC are often used to evaluate the merits of a binary classifier. This article will first briefly introduce ROC and AUC, and then use an example to demonstrate how to create a ROC curve and calculate AUC in python.
AUC Introduction
AUC (Area Under Curve) is a very common evaluation indicator in the Machine Learning binary classification model, compared with the
PHP date formatting, date calculation, and obtaining the start and end dates of the current week and month. PHP date formatting and date calculation as well as getting the current week, month header and end date PHP date format and date calculation as well as the PHP date format sample code when obtaining the previous week, month header and end date: ** PHP date
Vswitch board bandwidth calculation
Calculation Formula description
The backboard bandwidth of A vswitch is the maximum amount of data that can be transferred between the vswitch interface processor or interface card and the data bus. The backboard bandwidth indicates the total data exchange capability of a vswitch. The unit is Gbps. It is also called the switching bandwidth. The bandwidth of A vswitch ran
Title DescriptionDescription addition and subtraction is the basic operation in the calculation, although the rules are simple, but the number of bits is too many, it will inevitably make mistakes. The question now is: given any number of digits (no more than 1000 bits) of the addition and subtraction formula, give the correct result. To increase the speed, the result of the given operation is guaranteed to be a positive integer. input/output format i
Several power function calculation methods and Power Function MethodsIntroduction
We know that the Base e of the natural logarithm is defined as the following limit value:
This formula is suitable for some tests on power function calculation. The result is an approximate value of e, so you don't have to worry that the calculation result will overflow when n is l
Numerical calculation refers to the algorithm in the field of numerical analysis. Numerical analysis is a special study of data problems related to numerical and approximate values, and numerical calculation plays a particularly important role in the study of numeric analysis.polynomial interpolation is a method of calculating the approximate value of a function . Where the function value is known only on a
WPS Word is one of our common Office software, because of its simple, practical, so well received by the user's favorite. When we edit a document, we sometimes need to insert a table in the document, compare or assist some data, and then count some of the data in the table. For the calculation of the data in the table, we usually are accustomed to using Excel to operate, thus ignoring the WPS text in the table cal
In reality, the recommendation system is generally based on collaborative filtering algorithms, which usually need to calculate the user and user or project and project similarity, for data volume and data types of different data sources, need different similarity calculation method to improve the recommended performance, In Mahout, a large number of components are provided for computing similarity, and these components implement different similarity
I. Loss of precision in floating-point calculationsProbably a lot of friends with programming experience are not familiar with this problem: no matter what programming language you use, when you use floating-point data for accurate calculations, you may encounter errors in the calculation results. Take a look at the following example.This is an example of a result error when using floating-point data for precise calculations, written in Java, omitted.
Beijing personal income tax calculation method
For items such as "Five insurances and one gold" that should be borne by individuals whose income is reduced by the amount received each month, and the remaining balance after the fee of 2000 yuan is deducted,
It is the taxable income.
Amount of personal income tax payable = amount of taxable income * applicable tax rate-deduction of quick calculation
Taxabl
The built-in load calculation tool for Revit MEP is based on the US ASHRAE load calculation standard using thermal balance method (HB) and Radiation Time series (RTS) for load calculations. The tool can automatically identify the building model information, read the area of the building components, volume and other data and calculate.
Basic settings
1.1. LocationLocation information is used to
Python implements VSM-based cosine Similarity CalculationIn the case of entity alignment and attribute value decision in the building phase of the knowledge graph, determining whether an article is your favorite article, and comparing the similarity of the two articles, it involves the knowledge of Vector Space Model (VSM) and Cosine similarity calculation.This article describes the theoretical knowledge of VSM and Cosine similarity first, then uses the example of Ruan Yifeng's great god for exp
C-written second-rate calculation four mixed operation projectDevelopment language: C languageDevelopment tools: Visual Studio 2017Finishing Time: August 2, 2017Source code: 500 lines;Development method: C language Multi-file mode developmentImplementation function: Write four mixed expression in file (no matter how long ...) ), press run to produce results.Four mixed operation expressions such as:(19+67) *33-45/5+17*52+39/3+ ....Significance: At the
Network checksum Calculation
1. Preface
Checksum calculation is the basic function of NAT and content modification. After performing these operations, you must modify the checksum in the Data header.
2. 16-bit checksum Calculation
2.1 Basic Principles
The IP, ICMP, IGMP, TCP, UDP, and other protocols have the same checksum algorithm. The data streams are regarded
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Earthwork calculation plays an important role in earthwork and is an important part of engineering desig
Differential line impedance models are similar to single-ended lines, with the biggest difference being that the differential line impedance model has one more parameter S1, the distance between the differential impedance lines (note the distance between the center points of the line).1.edge-coupled Surface microstrip 1 bScope of application:
The
differential impedance calculation of the outer barrier welding (pre-weld). This model is more
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