Tag：coefficient
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Time：2020-11-6
Series articles： Tensorflow tutorial (first one) — linear regression Tensorflow course (first two) — polynomial regression Tensorflow tutorial (first three) — Logical Regression Tensorflow course (1) — linear model Standard equation method There is not only gradient descent method to solve the cost function, but also the gradient descent method needs to select the appropriate […]
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Time：2020-10-26
Back to the catalog With the characteristic that the output of ideal operational amplifier can output any voltage and any current, we can use ideal operational amplifier to build a variety of controlled power supply. Of course, in practical use, the output of op amp should not exceed the maximum value given in its data […]
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Time：2020-9-26
BJROBOT Linear velocity correction 1.The carLay flatOn the floor, use a tape measure as the measuring scale,Select the front or rear of the car as the starting point of the car, Open the virtual machine in the data and open a terminal ssh In the past, the main control terminal started roslaunch znjrobot bringup.launch。 2.Open […]
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Time：2020-9-26
Practice based on the employees table under HR user in Oracle database HR needs to get the name of the employee whose salary is more than $12000 a month (last_ Name) and salary report, please complete the query statement select last_name, salary from employees where salary >12000; HR needs to identify groups of high-income and […]
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Time：2020-8-27
Do you know what period your app is in? Do you know if your app user mix is the best? Youmeng statistics provides the function of “user composition” for apps with “dau > 1W”, and helps developers understand the health status of apps more intuitively with the “coefficient of change” index of Youmeng! For developers, […]
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Time：2020-5-21
Practice based on the employees table of HR user in Oracle Database HR needs to be paid more than $12000 a month (last_ Name) and salary report, please complete the query statement select last_name, salary from employees where salary >12000; HR needs to identify high-income and low-income employee groups. Please show the name and salary […]
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Time：2020-3-17
Meaning of the topic There are only two output cases: Coefficient 0, index 0 – > output0 0 Coefficient is not 0, index is not 0 – > output is derivative Two points of attention The spaces in this test case are not necessarily unique, and there will be multiple spaces in the middle. Pay […]
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Time：2020-2-24
Problem part Description: The standard expression of a unary polynomial can be written as follows: $f (x) = a {0} + a {1} x + \ dots + a {n – 1} x ^ {n – 1} + a {n} x ^ {n} $. Now we give the order of a polynomial $n $, and […]
