pagerank

来源： https://stackoverflow.com/questions/63808939/applying-pagerank-to-a-topic-hierarchy-treeusing-sparql-query-extracted-from-db

问题 I am trying to build a directed graph and compute personalized page rank over this graph. So suppose I have a graph with vertices {1,2,3,4} and edges going from 2, 3, and 4 to vertex 1, I would like to: (1) compute the personalized page rank of every vertex with respect to 1 (2) compute the personalized page rank of every vertex with respect to 2. The question is how I should pass this option in the personalized page rank function. The following code does not seem to do what I want: import

问题 This is the pagerank function from networkx def pagerank(G, alpha=0.85, personalization=None, max_iter=100, tol=1.0e-6, nstart=None, weight='weight', dangling=None): I am confused with personalization and weight. I understand the when personalization matrix is not provides a uniform matrix is used and when weight is not provided edge weight of 1 is used. I have been reading about :Edge weight personalization and Node Weight Personalization. http://www.cs.cornell.edu/~bindel/present/2015-08

问题 I have a link in one column and, based on it, I want Number of Google searches in column 2 Page rank of first result in column 3 I know this can be done, as I saw a friend pulling google search result right in Excel. If anyone knows, please share how I could do that. 回答1: If I correctly interpret your question, one of the tasks you had to do is How do I get programmatically the Google page rank for a list of URLs? You can find the code to do this in this CodeProject article: Request Google´s

问题 Hello I want to integrate the SEOStats Class with a project in codeigniter , is anyone provide me solution ? I have tried to make the SEOstats class as a helper and load the helper in the specific controler , but a blank page is showing , I also try to include it via view but the same blank page i am seeing , I have included this code in my view file , the SEOstats directory also in the same views directory . <?php require_once 'SEOstats/bootstrap.php'; use \SEOstats\Services as SEOstats; try

问题 I am working on building a transition matrix for implementing the PageRank algorithm. How could I use numpy to make sure that the columns add up to one. For example: 1 1 1 1 1 1 1 1 1 should be normalized to be .33 .33 .33 .33 .33 .33 .33 .33 .33 回答1: Divide the elements of each column by their column-summations - a/a.sum(axis=0,keepdims=1) # or simply : a/a.sum(0) For making the row-summations unity, change the axis input - a/a.sum(axis=1,keepdims=1) Sample run - In [78]: a = np.random.rand

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . I have a list of domains and would like to get the: PageRank for all the domains. So just an integer, there must be an API that

问题 In Wikidata (Wikidata SPARQL endpoint), is there a way to order the SPARQL query results with something like a PageRank? SELECT DISTINCT ?entity ?entityLabel WHERE { ?entity wdt:P31 wd:Q5. SERVICE wikibase:label { bd:serviceParam wikibase:language "en" . } } LIMIT 100 OFFSET 0 Can we specify a field to order the results by and that field expresses that the entity at the top is more notable/important/recognizable that the following one and so on? 回答1: It seems that PageRank does not make much

问题 This is for http://cssfingerprint.com I have a largish database (~100M rows) of websites. This includes both main domains (both 2LD and 3LD) and particular URLs scraped from those domains (whether hosted there [like most blogs] or only linked from it [like Digg], and with a reference to the host domain). I also scrape the Alexa top million, Bloglines top 1000, Google pagerank, Technorati top 100, and Quantcast top million rankings. Many domains will have no ranking though, or only a partial

问题 I am writing a page rank program. I am writing a method for updating the rankings. I have successful got it working with nested for loops and also a threaded version. However I would like to instead use SIMD/AVX. This is the code I would like to change into a SIMD/AVX implementation. #define IDX(a, b) ((a * npages) + b) // 2D matrix indexing for (size_t i = 0; i < npages; i++) { temp[i] = 0.0; for (size_t j = 0; j < npages; j++) { temp[i] += P[j] * matrix_cap[IDX(i,j)]; } } For this code P[]