data-science

- https://youtu.be/rqvyWUODZGE

"Rata Die". Counting Days since...

 

Counting Days since...

https://en.wikipedia.org/wiki/Rata_Die

# col1 is an exported column of dates

lastDay = 54 # last row in the column sorted by the date

daysSince(x) = Dates.datetime2rata(x) - Dates.datetime2rata(col1[lastDay])

arrayDays = Array{Int64}(undef, lastDay) # array size is 54

for i = 1:lastDay

    arrayDays[i] = daysSince(col1[i])

end

arrayDays

Output:

54-element Array{Int64,1}:
 613
 606
 599
 592
 582
 575
 568
 554
 547
 540
 533
 526
 512
   ⋮

"Rata Die". Counting Days since...

 

Counting Days since...

https://en.wikipedia.org/wiki/Rata_Die

# col1 is an exported column of dates

lastDay = 54 # last row in the column sorted by the date

daysSince(x) = Dates.datetime2rata(x) - Dates.datetime2rata(col1[lastDay])

arrayDays = Array{Int64}(undef, lastDay) # array size is 54

for i = 1:lastDay

    arrayDays[i] = daysSince(col1[i])

end

arrayDays

Output:

54-element Array{Int64,1}:
 613
 606
 599
 592
 582
 575
 568
 554
 547
 540
 533
 526
 512
   ⋮

Using Linear Regression with Julia Language

Linear Regression

What is a Linear Regression?

Watch:

https://www.youtube.com/watch?v=ZkjP5RJLQF4

Selecting the best "fit" line to predict the data.

Fitting a linear regression model to a numerical data set.

Calculating the deviations (the error)

sum of squares

References:

• https://github.com/qin-yu/julia-regression-boston-housing
• YouTube: Alex Tantos: 1 - Linear Regression with Julia
• GitHub: https://github.com/atantos/Youtube/blob/master/Simple_LR.jl
• 
  

Using Linear Regression with Julia Language

Linear Regression

What is a Linear Regression?

Watch:

https://www.youtube.com/watch?v=ZkjP5RJLQF4

Selecting the best "fit" line to predict the data.

Fitting a linear regression model to a numerical data set.

Calculating the deviations (the error)

sum of squares

References:

• https://github.com/qin-yu/julia-regression-boston-housing
• YouTube: Alex Tantos: 1 - Linear Regression with Julia
• GitHub: https://github.com/atantos/Youtube/blob/master/Simple_LR.jl
• 
  

DBPedia

Exploring..


https://wiki.dbpedia.org/

DBPedia

Exploring..


https://wiki.dbpedia.org/

Million Songs Dataset for Machine Learning (280 GB)

https://labrosa.ee.columbia.edu/millionsong/

Million Songs Dataset for Machine Learning (280 GB)

https://labrosa.ee.columbia.edu/millionsong/