Multiclass Classification in R
@theyaa wrote: Does anyone know of an example using multiclass classification example in R please? either using one-vs-all method or on-hold-out method? Thanks Posts: 1 Participants: 1 Read full topic
View ArticleWhich is better IIT or ISI or IISc for Data Science?
@nknithinabc wrote: Hii, Does any IIT/ISI offers M.Tech or any other program in Data Science.Which Institute [ IIT/ISI/IISc}would be better for Placements in Analytics companies Posts: 2 Participants:...
View ArticleCase studies solved
@nknithinabc wrote: Could you please provide me some links for Data Science Case Studies with solutions/Pseudo code Posts: 1 Participants: 1 Read full topic
View ArticleHackathon Solutions
@nknithinabc wrote: Could you please share me the links for solutions of previous Hackathons Posts: 2 Participants: 2 Read full topic
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How to visualise the voronoi centers in the voronoi plot in R
@data_hacks wrote: hello, While learning about k-NN I am trying to visualize the voronoi plot.I have used: library("tripack") x <- testing[,1] y <- testing[,2] plot(voronoi.mosaic(x, y,...
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How do I specify the number of nodes in voronoi.mosaic in R
@data_hacks wrote: hello, Voronoi plots are used to visualize voronoi decomposition of the data in kNN.Hence I am trying to use it for the same.My code for creating a voronoi.obj: library("tripack") x...
View ArticleNeed basics of Statistics
@shkFaheem wrote: Hi All,I am newbie to the data science. i want to the basic statistics which is useful for R. could you please share the docs/guidence related to this. thanks Posts: 3 Participants:...
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How does R calculate the probabilities in Naive Bayes
@data_hacks wrote: hello, In Naive Bayes we calculate the predicted probabilities by:I am applying Naive Bayes on the below data:While trying to interpret the below output:I am not being able to match...
View ArticleHow to partition the training data for model building?
@harry wrote: I have one training data and I want to use that for building a classification model.I want to know that is there any packages in R which helps in partition the training data for building...
View ArticleHow to deal with variables with too many level?
@hossein_mortazavy wrote: HiI want to predict dress problem by logestic Regression in R but when want to predict on test data set it error that there is a new level in particular variable how can I...
View ArticleLook Alike Modelling
@vijay1987 wrote: Could anyone please let me know how to do look alike modelling?My Business question is to find out the prospective customers for targeting. These customers have not mad any...
View ArticleWhat are most sought after certifications in Data Science?
@apsinghaec wrote: Please name some of the good, sought after certifications employers are looking for in Data Science?Any comments on Cloudera , Wiley certifications in Data Science. Posts: 2...
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How to see the results of kknreg in R
@data_hacks wrote: Hello, I am trying to compare linear regression and regression using R.Below is my code for reg using knn: library(caTools) set.seed(88) split=sample.split(sales_store,SplitRatio =...
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How to extract the best decision tree from a random forest in R
@data_hacks wrote: Hello, Random forests give greater accuracy when compared with decision trees,but are not interpretable.So I understand that there are ways to extract the best tree from the...
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Google open sources it's AI Engine Tensor Flow
@shuvayan wrote: www.wired.com Google Just Open Sourced the Artificial Intelligence Engine at the Heart of Its Online Empire In a dramatic departure, Google is open sourcing software that sits at the...
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How to disable the index of series to matplotlib for plotting on the X-axis?
@sid100158 wrote: I am currently plotting a series in Ipython notebook .For this I have created a Series and use plot function on the Series for plotting it,but by default the index of Series is...
View ArticleHow to remove plural words from the training data for forming bag of words?
@harry wrote: I am currently studying about the bag of words technique in R and for forming the the words I have use the package tm .But after using it, the training data contains lots of similar...
View ArticleCareer Opportunities in Analytics for MBA freshers
@hell0_w0rld wrote: Hi I’ve started following Analytics Vidhya since a month and I’m sad that I missed out on such a facility earlier. I do check your blogs daily and in the last one month I’ve found...
View ArticleHow to set up hadoop on aws
@data_hacks wrote: hello, I want to know if there are any tutorials on using hadoop in aws.Has anyone here done that?It seems the process is quite complex and hence any help is greatly...
View ArticleAnalytics job for freshers
@anchal1213 wrote: I am a b- tech graduated fresher.. and want to switch into data analytics. I have done certifications in SAS Base, R programming and Machine Learning. I have been looking for an...
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