PageRank | C implementation of the PageRank algorithm | GPU library
kandi X-RAY | PageRank Summary
kandi X-RAY | PageRank Summary
aka this was interesting. C implementation of the PageRank algorithm, with and without parallelization. Used as a group project for the High Performance Computing course held at Ca' Foscari University of Venice, master's degree in Computer science. The algorithm is implemented sequentially and then parallelized using the openMP library.
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QUESTION
I have a complex cypher, When I don't use "order by" I get a pretty fast response but when I use "order by" it is incredibly slow. I have an b tree index on my order attribute(score of the movie which is PageRank algorithm score). I added the cypher.
...ANSWER
Answered 2021-May-10 at 13:01You need to indicate to the planner that your m.score field is numeric, so pulls that from the index. I.e. where m.score > 0
You should see it in your query plans.
Your query looks also really convoluted, and generated. But actually not taking into account that always "false" expressions can just be left out from the query parts e.g. WHERE NOT [] = []
QUESTION
I created a cluster on Google Cloud Platform having five linux based virtual machines (VM): one master and 4 workers.
I ran ./start-master.sh
on the master VM and ./start-worker.sh [external-master-IP:7077]
on the worker VMs.
Now I want to simply run a Graphx example job, for example a PageRank algorithm that is already in Spark, using ./bin/spark-submit.
I know, I read the documentation, which says to run like this:
...ANSWER
Answered 2021-Feb-07 at 22:11Yes, you need to add the jar in the spark-submit command :
QUESTION
ANSWER
Answered 2021-Jan-31 at 12:06For reasons unknown to me, the histplot for column eigen_central
has a problem determining a reasonable number of bins. The pairplot works with kde plots in the diagonal sns.pairplot(central, diag_kind="kde")
, and the histplot for column eigen_central
alone also does not work as expected. You can overcome this problem by defining the bin number:
QUESTION
im studying right now and starting with reactjs and all that, i have to make a web page based in Game of thrones using an API, i recieve the api data and i can print in screen the img, name and age of the characters, but i need to sort them by their age.
componentDidMount() {
...ANSWER
Answered 2020-Dec-09 at 08:46Here you can find more information regarding sorting arrays in javascript.
You can chain some Array operations like sort and filter, so the solution would be to first filter out the characters without an age, and then sort the result:
QUESTION
I'm still a beginner in programming. I was writing some code (C on Linux) to calculate the page rank of some example webpages. I'm using the google formula, which is here: http link
Here is the code I wrote:
...ANSWER
Answered 2020-Nov-14 at 15:12Allocate new variables
Store the result to the new variables during calculation
Store results to the original variables from the new variables after calculation
QUESTION
Based on the question I asked last time: Applying PageRank to a topic hierarchy tree(using SPARQL query extracted from DBpedia)
As I currently got the PageRank value against the Regulated concept map. Toward the concept "Machine_learning", my currently code is below:
...ANSWER
Answered 2020-Oct-08 at 09:24I think you can pass a dictionary to the node_color
parameter of the draw function. If you construct that dictionary such that the keys are the node-names and the values are the colours you want to associate with those node-names, then you should be able to get the formatting you want.
e.g. if you have been able to run some SPARQL to generate a list of nodes you want to be green, and another list that you want to be blue, and assuming you've got a green_list
and blue_list
pair of lists of these nodenames, then you could construct your dict something like this:
QUESTION
I have following variables in my dataset: Customer, Merchant, Age, gender, category, amount, fraud
I need to generate following neo4j features from it:
Degree, Pagerank, Community for merchant and customer as well. So, eventually something like this:
merchdegree, custDegree, CustPagerank, merchPageRank, merchCommunity, custCommunity
// Computing PageRank for placeholder nodes (This won’t work because this library has been deprecated)
CALL algo.pageRank('Placeholder', 'PAYS', {writeProperty: 'pagerank'})
// Community detection using label propagation
CALL algo.beta.labelPropagation('Placeholder', 'PAYS', {write:true, writeProperty: "community", weightProperty: "cnt"})
// Viewing the PageRank results (WIP)
#MATCH (p:Placeholder) RETURN p.id AS id, p.pagerank as pagerank ORDER BY pagerank DESC
However, this library has been deprecated. I would appreciate if someone can guide me how to get this features and what is the alternate code or library that need to be used for this.
...ANSWER
Answered 2020-Oct-02 at 17:46In recent versions of Neo4j, the Graph Algo library was deprecated in favor of Graph Data Science library
Note: Some of the functions have may have evolved a little in the move, since I have it handy, here is an example using Weakly Connected Components to identify graph islands and label them with a group number. I'm writing back the values because I do this step during graph construction (as opposed to creating a separate virtual graph in memory)
with graph library I was using
QUESTION
Suppose i create the following directed Graph using networkx and perform the pagerank algorithm on it
...ANSWER
Answered 2020-Aug-13 at 18:37I've made a direct modification of networkx.pagerank
algorithm to store the values of each iteration in a list.
QUESTION
I'm writing different basic algorithms to practice writing code in a pythonic manner. Below is a function that produces a basic pagerank score at step k for a given graph G:
...ANSWER
Answered 2020-Aug-01 at 06:43Using list comprehension:
QUESTION
I'm testing PageRank in a projected graph 'ns_reverse' where I've applied before Node Similarity. My dataset has initially two types of nodes 'Keywords' and 'Articles' that are linked by a relationship 'APPEARS_IN', like this:
Keyword-[APPEARS_IN]->Article
After applying Node Similarity, my projected graph has also a new relationship 'SIMILAR', like this:
Article-[SIMILAR]->Article
Now that I'm testing PageRank to mesure the importance of each 'Article' node, I getting 'None' for the nodes type 'Keyword' but I do not want 'Keywords' nodes to be mesured. Here is the code:
...ANSWER
Answered 2020-Jul-24 at 08:34If you want PR to be computed only for Article
nodes, you need to create another projected graph containing only these nodes and the relationship between them (I guess it is the new SIMILAR
relationship):
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