traveler | Sample applications demonstrating use of Circuit Breaker

I am new to zimpl and I am currently trying to modell the GTSP. The setting is that we have nodes which are grouped into clusters. My problem is i dont know how to implement in zimpl which node belongs to which cluster.

What I did so far:

set V:= {1..6}; set A:= { in V*V with i < j};
set C:= {1,2,3};
set W:= { in C*C with p < q};
set P[]:= powerset(C); set K:= indexset(P);

I am guessing something is missing because i want to group node 1,2 in cluster 1, 3,4 in cluster 2 and 5,6 in cluster 3.

Some background Information:

Let G = (V, A) be a graph where V=1,2,...,n is the set of nodes and A = {(i, j): i, j ∈ V, i ≠ j} is the set of directed arcs (or edges), and let c_ij be the travel distance (or cost or time) from node i to node j. Let V1, V2, ... , Vk be disjoint subsets of V such that union of these subsets equals to V. These subsets are called clusters. The GTSP is to find the tour that (i) starts from a node and visits exactly one node from each cluster and turns back to the starting node (ii) never visit a node more than once and (iii) has the minimum total tour length. Associated with each arc, let x_ij be a binary variable equal to “1” if the traveler goes from node i to node j, and “0” otherwise.

Thats the mathematicl model I want to model: min∑i∈V ∑j∈V\{i} cijxij subject to: ∑i∈Vp ∑j∈V\Vp xij = 1 (p= 1, ..., k) ∑i∈V\Vp ∑j∈Vp xij = 1 (p= 1, ..., k) ∑j∈V\{i} xji − ∑j∈V\{i} xij = 0 (∀i∈V) xij∈{0,1} ∀(i, j)A up−uq+k ∑i∈Vp ∑j∈Vq xij+(k−2)∑i∈Vq ∑j∈Vp xij ≤ k−1 (p≠q;p,q=2,...,k) up≥0 (p=2, ..., k) (Thats the link for the paper: http://www.wseas.us/e-library/conferences/2012/Vouliagmeni/MMAS/MMAS-09.pdf)

Maybe someone can help! thanks

I have a program that summarizes non-normalized data in one table and moves it to another and we frequently get a duplicate key violation on the insert due to bad data. I want to create a report for the users to help them identify the cause of the error.

For example, consider the following contrived simple SQL which summarizes data in the table Companies and inserts it into CompanySum, which has a primary key of State/Zone. In order for the INSERT not to fail, there cannot be more than one distinct combinations of Company/Code for every unique primary key State/Zone combination. If there is, we want the insert to fail so that the data can be corrected.

The app contains TabBar as well as BottomNavigationBar. When I tried to navigate within the body of tab bar view it navigates full screen.

This is the result I am trying to get when clicked on button- Expected Result

But I am getting this Current Output

Here I have attached the code-

Short version: I have a array and need to create a matrix but with names labels on top and side and export like example csv. (sorry if may wording incorrect)

Long version: I made a recommendation system self taught and have a website ready after a year in quarantine learning and troubleshooting here on so usually a few day of searching I figure it out, but this got me stuck for about 3 weeks now.

The recommendation system system works in python I can put in a name and it spits of the recommended names i tweaked it and got it to acceptable results. But in the books, website and tutorial and udemy classes etc. Never learn how to take the python and make a Django site to get it to work.

This what the output is like currently is

The

Starting with this dataframe of train trip segments:

I am trying to understand the working of the pivot_wider function in tidyr. I am having bookings data and properties data and I am trying to find whether properties appeal to business travelers and tourists alike

The steps that I am trying to accomplish is by:

• First, converting the column for_business to a factor with the levels "business" and "tourist".
• For each property and for business travelers and tourists separately, calculating the average review score.
• Then, calculate the average review score difference between business travelers and tourists.

Code:

I am trying to perform a basic group by using the pivot_wider in tidyr. What I am looking for is the average ratings between business travelers and tourists. But, I encounter the following error:

So I have a form that executes a VBA script via a macro. The purpose of said script is to open Excel, create a new workbook, gather information from several tables and export them to a formatted spreadsheet. Each person has a sheet with their name, and the relevant data is printed in said sheet. It works perfectly for the most part. Only one problem... The table in Access where the name and demographics data is gathered from is formatted to sort by last name ascending alphabetically. The VBA script exports it in the order the names were entered. I want my VBA script to respect the formatting in the database table, and I would prefer not to have to add an alphabetizing subroutine to my VBA script.

Table A Format: ID, Active, Last, First, Role, Traveler, Resident, Preceptee, Phone, Completion

Table B Format: ID, Course, Course ID, Offered, HLC, Course Type

Last in Table A called "Roster" is the field with which I want my VBA script to sort alphabetically. The database is already configured to do this.

Thanks in advance!

VBA Code: