vk | ВКонтакте Social Network SDK | REST library
kandi X-RAY | vk Summary
kandi X-RAY | vk Summary
Library for work with VK API.
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Top functions reviewed by kandi - BETA
- Makes a request to the API
- Get users .
- Get hydration map
- Get multiple groups
- Get online field
- Get the key
- Get the next element .
- Get the last element .
- Get the current element .
- Sets the online value .
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QUESTION
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
...ANSWER
Answered 2021-Jun-12 at 15:36You can use an indexed set (just as u did to implement the powerset of C) and assign the sets as needed. Try this for example:
QUESTION
Copying a VkImage that is being used to render to an offscreen framebuffer gives a black image.
When using a rasterizer the rendered image is non-empty but as soon as I switch to ray tracing the output image is empty:
...ANSWER
Answered 2021-Jun-06 at 09:08Resolved by now:
When submitting the command buffer to the queue it would require an additional vkQueueWaitIdle(m_queue) since ray tracing finishes with a certain latency
QUESTION
I'm trying to import a Vulkan semaphore for using by CUDA on the windows platform, but always get a cudaErrorInvalidValue error. I can’t figure out what causes the problem.
Considering I have already a HANDLE for the Vulkan semaphore object, the Cuda side is at DLL1 as follows:
...ANSWER
Answered 2021-Jun-06 at 08:08As @talonmies commented, indeed, the structure cudaExternalSemaphoreHandleDesc is actually not fully initialized with the code shown. The problem is solved when initializing the structure to zero:
QUESTION
I need your help with custom markers in Leaflet. I need custom markers that correspond with the data entries. Here is a data SAMPLE csv that looks like this:
This is my code by now
...ANSWER
Answered 2021-May-29 at 14:06You are close. First you need a ternary or an if statement to check csv's result value as you mention when instantiating a marker. It accepts an object which has some options including icon key. Using that you can define a different icon apart from the predefined
QUESTION
please help to understand, why I not able to exclude the folder from SCP on bitbucket deploy pipeline
There is my example :
...ANSWER
Answered 2021-May-26 at 08:20Just replace your "SCP" image on RSYNC one
QUESTION
I have the below type:
...ANSWER
Answered 2021-May-20 at 16:11Object types are SQL types so they cannot be c reated in PL/SQL. You can, however, define a record type in a package rather than an object type and you should be able to use that record type to define a pipelined table function
QUESTION
I have the below function and I would like to turn it into a procedure. What would be the changes I need to accomplish it? I would like to turn it into a procedure because it's kind of a one purpose use function, and I would prefer to have it inside my main package along with my other procedures.
I would like to, instead of returning the table, creating it inside the procedure itself.
...ANSWER
Answered 2021-May-19 at 21:00A package can contain both procedures and functions.
There is no need to convert this from a function to a procedure to include it in a package.
eg
QUESTION
I have a function -please find a MRE at the end of the question-, which assigns, by partition of pc and order by r, if 'ay' is not null, that 'ay', if an has any values, then those values cannot be picked. However, I'm struggling to understand how the below part works (namely how, if cur.ay is not null, then the assigned a is ay). I would also need to enhance this function to include also logic for a column 'ao' which, if possible then assigned to that 'a', but, if cur.c<=0, try to assign it to any of the available 'a's. Could someone clarify how the logic in the loop works so I can try to enhance the logic myself?
...ANSWER
Answered 2021-May-13 at 09:24You want:
QUESTION
The script below takes one string input as a polyline and returns a data frame with the corresponding latitude/longitude pairs.
I would like to input to be a data set as follows:
ActivityID Polyline 1 PolyLineValue1 2 PolyLineValue2 3 PolyLineValue2and the output to be (keeping the ActivityID)
ActivityID latitude longitude 1 123 123 1 123 123 1 123 123 2 123 123 2 123 123 2 123 123 3 123 123 3 123 123 3 123 123I was thinking along the lines of iterating over the input dataset to do this but I've read here that's not a great idea performance wise.
Please can someone advice how to do this in Python?
...ANSWER
Answered 2021-May-10 at 12:23First, we wrap your code into a function:
QUESTION
I have the below function.
...ANSWER
Answered 2021-May-06 at 16:15FOR i IN 1..t2_data.count LOOP
IF ( t2_data(i).a = cur.ay AND t2_data(i).c > 0 )
OR ( cur.ay IS NULL AND t2_data(i).a NOT MEMBER OF taken AND t2_data(i).c > 0 )
THEN
a_freqs(i) := cum_freq + t2_data(i).c;
cum_freq := cum_freq + t2_data(i).c;
ELSE
a_freqs(i) := cum_freq;
END IF;
END LOOP;
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