Question about bat algorithm

What are the main heuristics (or principles, or strategies) of the bat algorithm that make it works as the optimal heuristic search?

thanks

For this assignment, you will select a current research paper (published since 2016) to review. You may select any research paper that is related to Data Science or Big Data Analytics. I strongly recommend that you start your search at Google Scholar . Once you enter your search term(s), select the "Since 2016" link on the left. Feel free to choose ANY relevant paper. (I would recommend that you select one that you can read and summarize in a reasonable amount of time. Don't select a 100 page paper!)

Need 200 words review on that paper

Please Don't rewrite already existing chegg answers

In DBMS, what would you use to obtain information about the Current logic structure of database?

How this informations recorded in the DBMS and who is responsible to maintain?

Racket/Scheme language

[15p] create-mapping A map data structure is described as either a set of key-value pairs or a set of keys and a set of values whose relation is described by a function with a one-to-one mapping from keys to values. Write a function, create-mapping, which takes a list of symbols (keys) and a list of any type of Scheme values (vals) and returns a function that takes one symbol argument (the key) and returns the corresponding value. The mapping is determined by the position of the elements in the two lists.

For example: ;keys > (define roman-numerals-keys '(I II III IV V)) ;values > (define arabic-numerals-vals '(1 2 3 4 5)) ;

The pairs mapped will be: ;I -> 1 ;II -> 2 ;III -> 3 ;and so forth ;the (create-mapping) function returns a function that we bind for later use > (define roman-to-arabic (create-mapping roman-numerals-keys arabicnumerals-vals)) > (roman-to-arabic 'I) 1 > (roman-to-arabic 'V) 5 > (roman-to-arabic 'some-symbol) uncaught exception: "Could not find mapping for symbol 'some-symbol" ;hint: create the error message in a similar way you did for problem 14 of hw01.

what are the goals of network administration ?

1. Prove  that the backtracking algorithm will always return a correct solution (where possible) when solving a game of peg solitaire.

2.Perform empirical analysis and compare the observation to the theoretical analysis. of backtracking algorithm

For this assignment, you will select a current research paper (published since 2016) to review. You may select any research paper that is related to Data Science or Big Data Analytics. I strongly recommend that you start your search at Google Scholar (scholar.google.com). Once you enter your search term(s), select the "Since 2016" link on the left. Feel free to choose ANY relevant paper. (I would recommend that you select one that you can read and summarize in a reasonable amount of time. Don't select a 100 page paper!)

Need 200 words review on that paper

Write a program in C++ that calculates the sum of two fractions. The program should ask for the numerators and denominators of two fractions and then output the sum of the two fractions. You will need to write four functions for this program, one to read the inputted data, one to calculate the sum of the two fractions, one to find the Greatest Common Divider (GCD) between the numerator and denominator and a function that will display the end result. The program should execute in a loop, asking the use if they wish to continue. The output should look similar as that below. Assume the user will only enter positive numbers, and neither denominator will ever be zero.
This program adds two fractions and displays the answer in reduced form.
Enter numerator 1: 1
Enter denominator 1: 3
Enter numerator 2: 1
Enter denominator 2: 6
1/3 + 1/6 = 1/2
Would you like to continue? (y/n)
After using the above formula, then reduce the answer by dividing the numerator and denominator by their GCD.
The prototypes for the four functions you will need to write are as follows:
void readTwoFractions(int &n1, int &d1, int &n2, int &d2);
void addTwoFractions(int n1, int d1, int n2, int d2, int &num, int &den);
int greatestCommonDivider(int top, int bottom);
void displaySumOfFractions(int n1, int d1, int n2, int d2, int top, int bottom);

Write a program function code in Python that prompts the user to enter the total of his/her purchase and add 5% as the VAT. The program should display the total without and with VAT.

( that mean i should ask the user to enter the number of their item " so i think that i should use range"

then print the result with and without the VAT )

1. Create a timer in REACT JS using any library application which asks the user for minutes. The user then click Start button and starts the timer count down.

Part 1: Software Testing :

Assume that you are building a web-based grocery shopping system (similar to the ones that

Woolworths and Coles provide). The system allows customers to add grocery items to a (virtual)

shopping cart and pay online. They will then be notified when the order is ready for pick-up in the

selected store.

1. Identify one functional and one non-functional requirement related to that system .

2. Describe how you would test those two requirements .

3. For the item counts in the shopping cart, describe what equivalence classes and boundary values

you would choose when creating the corresponding unit tests .

Part 2: Project Management (Risk Management) :

Consider the scenario outlined in Part 1.

1. Identify two risks associated with the development of that system .

2. Assess their probability and severity .

3. Provide strategies to manage the risks .

Can someone give me some ideas?

Part 2: Project Management (Risk Management) :

1. Identify two risks associated with the development of that system .

2. Assess their probability and severity .

3. Provide strategies to manage the risks .

IT-344: Database Management Systems
please No handwriting
thank you

Topic of Discussion
According to the conflicts and failure in transactions processing, the need of concurrency control and recovery appeared.
Discuss the differences between concurrency control and recovery in terms of:
The purposes.
The algorithms.
The problems.