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

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

Research in Data mining?

I would like to publish research article so that I could get phd in good college. I am confused of where to start? could some one give me direction. I have six months and working on DBMS-MySQL.

31 December 2014 9,718 0 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

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 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

Why should we choose deep learning to machine learning? Why is CNN better for image classification? Can I get Typical Answer?

What Characteristics makes CNN work better?

03 March 2021 1,458 4 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 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

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