How do I format Xts data time in R?

my data is like this. i have to use this as index for xts in R. "01/04/2013 09:00:01.265381" "01/04/2013 09:00:01.265717" "01/04/2013 09:00:01.266342" "01/04/2013 09:00:01.266342" "01/04/2013...

04 May 2015 850 3 View

Python time conversition?

03 April 2015 531 0 View

Priority queue in R?

Is it possible to implement priority queue in R? how to implement?

03 April 2015 8,745 1 View

What is the queue data structure in R?

I have to implement First In First Out queue in R for my work. Is there any library available or do I have to implement by myself. If I have to implement which data structure would be good...

02 March 2015 1,635 11 View

Octave or matlab?

I have to work on machine learning problems. I would like to know which is better for academic purpose?

01 February 2015 6,669 17 View

Book for machine learning ?

I have enrolled in Machine learning course from coursera. Prof Andrew Ng is really great. I would like to follow book . I am looking for a book which follow the lecture followed by Prof Andrew...

01 February 2015 2,746 3 View

How to find Uptick or downtick from limit order book?

I have to find the Uptick or Downtick from database which contains indian Historical Cash Market data and trade data for a day.

01 February 2015 7,243 1 View

How do I correct my string operations in MySQL?

01 February 2015 3,340 7 View

How do I select records in MySQL?

I have very large table around 15 GB. schema is create table cash_order(Record_Indicator char(2) not null, Segment char(4) not null,Order_number bigint unsigned not null, Transaction_Times bigint...

31 December 2014 8,030 7 View

How to upload large file in MySQL (more than 15 GB)?

I have csv file which minimum size 15 GB. I have to upload the data from file to mysql tables. I created the tables and I used the Load data infile command. It worked well on small size file of...

31 December 2014 9,505 10 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Guidelines for survey (question type) analysis?

Hi. Please tell me what guidelines should i need to follow for questionaries' type research work in India. It is not hospital based work, we are conduction basic institutional based qualitative...

03 March 2021 2,037 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

How to upload pdf of my articles published?

How to upload pdf of my articles published?

03 March 2021 2,183 3 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

How to access MSCI KLD Stats and Sustainalytics?

Hello all, I'm currently working on my undergraduate thesis and I'm having difficulties trying to access KLD Stats and Sustainalytics because my campus Airlangga University and apparently other...

02 March 2021 8,525 1 View

Ideas for Phd's Thesis on pricing (Marketing)?

Hi everyone, I'm studying Marketing and I would like to write my PhD thesis on the topic of pricing. Any specific ideas?

02 March 2021 9,706 5 View