Briljant is a MIT licensed framework for Numpy-like nd-arrays and R-like data frames and vectors for the JVM written in Java with bindings for languages such as Groovy and Kotlin.
-
versatile, simple to use and fast r-like data frame abstraction (supporting split-apply-combine and other common idioms)
-
fast and easy to use n-dimensional arrays for both primitive and reference types with bindings to native BLAS and LAPACK routines
CsvParser parser = new CsvParser();
parser.getSettings().setUrl(new URL("https://www.quandl.com/api/v1/datasets/GOOG/NASDAQ_AAPL.csv"));
DataFrame df = parser.parse();
df.groupBy(LocalDate.class, "Date", LocalDate::getYear)
.collect(Vector::mean)
.sort(SortOrder.DESC)
Open High Low Close Volume
2015 122.715 123.807 121.366 122.559 54701792.000
2014 92.216 93.009 91.482 92.264 63235262.818
2013 67.587 68.234 66.893 67.519 101612690.714
2012 82.379 83.118 81.412 82.293 131976305.232
2011 52.007 52.487 51.467 52.000 123447489.857
2010 37.137 37.482 36.693 37.008 145805263.861
2009 20.946 21.213 20.708 20.986 139497489.556
2008 20.330 20.730 19.837 20.226 280518140.298
2007 18.341 18.585 18.027 18.325 246412550.853
2006 10.142 10.279 9.973 10.115 215070884.749
2005 6.661 6.758 6.566 6.668 181754270.762
2004 2.529 2.573 2.495 2.537 121116211.286
2003 1.323 1.346 1.301 1.325 70685000.016
2002 1.366 1.395 1.336 1.367 73738366.698
2001 1.441 1.483 1.401 1.444 92302462.742
2000 3.167 3.380 3.160 3.265 110160044.540
1999 0.000 2.203 2.099 2.154 130986650.063
1998 0.000 3.450 3.288 3.378 55339069.349
1997 0.000 2.623 2.518 2.567 16394428.822
1996 0.000 3.631 3.501 3.560 13081872.835
1995 0.000 5.897 5.700 5.791 18502022.222
1994 0.000 4.963 4.773 4.869 14175136.111
1993 0.000 5.969 5.752 5.861 13948507.115
1992 0.000 7.943 7.709 7.829 10138857.874
1991 0.000 7.632 7.358 7.499 14482723.336
1990 0.000 5.460 5.260 5.366 10965262.055
1989 0.000 6.043 5.854 5.952 12626672.222
1988 0.000 6.026 5.841 5.934 10213406.719
1987 0.000 7.862 7.528 7.696 10691949.407
1986 0.000 4.705 4.551 4.637 6583743.478
1985 0.000 2.942 2.875 2.885 5619956.917
1984 0.000 3.913 3.816 3.829 5158288.933
1983 0.000 5.474 5.333 5.353 5264802.372
1982 0.000 2.785 2.732 2.739 2638958.498
1981 0.000 3.496 3.473 3.473 1012468.379
1980 0.000 4.365 4.349 4.349 3232815.385
[36 rows x 5 columns]
DoubleArray x = Arrays.randn(20).reshape(4, 5);
Arrays.dot(x.transpose(), x);
array([[ 8.095, -1.714, -2.135, 2.017, -3.727],
[-1.714, 0.932, -0.021, -0.393, 0.952],
[-2.135, -0.021, 2.459, -1.203, 2.531],
[ 2.017, -0.393, -1.203, 3.823, 0.440],
[-3.727, 0.952, 2.531, 0.440, 5.072]])
Array<String> x = Array.of("a", "b", "c", "d").reshape(2, 2)
array([[a, c],
[b, d]])
Not yet available
Since Briljant is built using Gradle it is simple to build from source and reference the binaries from your project. First we need to clone the repository
git clone https://github.com/isakkarlsson/briljant.git
Then building the source code is as simple as
gradle install
In your build.gradle or pom.xml reference
<dependency>
<groupId>org.briljantframework</groupId>
<artifactId>briljant-core</artifactId>
<version>0.1-SNAPSHOT</version>
</dependency>
We would love your contributions! Come talk to us in our chat room. Beware that in the current phase of development the code is changing rapidly so please talk to use before commiting to som major work!
We prefer developing in IntellijIDEA, to
import the project use the gradle importer:
- File > Import Project
- Import project from external module (select Gradle)
- Check "use default gradle wrapper"
This project employs this git branching
model. In essence,
the major work is committed to the develop-branch and once a release version
is ready master and develop are merged. Major features reside in there own
branches which are merged to develop once completed.
- Improve testing
- Assess the performance
- Clean up the API for first release