julia_port
所属分类：数学计算
开发工具：Elixir
文件大小：0KB
下载次数：0
上传日期：2018-10-15 09:01:36
上 传 者：
sh-1993
说明： 使用端口和元编程调用elixir中的julia函数进行科学计算的示例项目，
(example project to invoke julia functions in elixir to do scientific computing using port and metaprogramming,)
文件列表:
.formatter.exs (84, 2018-10-15)
LICENSE (1066, 2018-10-15)
config/ (0, 2018-10-15)
config/config.exs (1123, 2018-10-15)
data/ (0, 2018-10-15)
data/test (377653, 2018-10-15)
data/train (1453165, 2018-10-15)
doc/ (0, 2018-10-15)
doc/.build (246, 2018-10-15)
doc/404.html (2830, 2018-10-15)
doc/JuliaPort.GenFunction.html (4395, 2018-10-15)
doc/JuliaPort.html (16842, 2018-10-15)
doc/api-reference.html (3440, 2018-10-15)
doc/dist/ (0, 2018-10-15)
doc/dist/app-240d7fc7e5.css (23120, 2018-10-15)
doc/dist/app-a0c90688fa.js (219248, 2018-10-15)
doc/dist/sidebar_items-ac571aa12f.js (1216, 2018-10-15)
doc/fonts/ (0, 2018-10-15)
doc/fonts/icomoon.eot (3096, 2018-10-15)
doc/fonts/icomoon.svg (6884, 2018-10-15)
doc/fonts/icomoon.ttf (2932, 2018-10-15)
doc/fonts/icomoon.woff (3008, 2018-10-15)
doc/index.html (311, 2018-10-15)
doc/search.html (2602, 2018-10-15)
julia/ (0, 2018-10-15)
julia/lr.jl (640, 2018-10-15)
lib/ (0, 2018-10-15)
lib/gen_function.ex (1532, 2018-10-15)
lib/julia_port.ex (3157, 2018-10-15)
mix.exs (1363, 2018-10-15)
mix.lock (1060, 2018-10-15)
test/ (0, 2018-10-15)
test/julia_port_test.exs (120, 2018-10-15)
test/test_helper.exs (15, 2018-10-15)
## julia_port
example project to invoke julia functions in elixir to do scientific computing using port and metaprogramming
### news
* support julia v1.0.1
* support elixir v1.7.3
* support erlang 21.0
* the script_test is supported
* the real_test is removed because it does not support julia v1.0.1
### remarks
* the author will experiment with [tensorflow.jl](https://github.com/malmaud/TensorFlow.jl) for good reason
### prerequisite
* [julia](http://julialang.org/) installed and its access from shell
### Installation
the package can be installed
by adding `julia_port` to your list of dependencies in `mix.exs`:
```elixir
def deps do
[{:julia_port, "~> 0.2.0"}]
end
```
remark: if you install the package as a dependency, in order to run `script_test`,
you have to move `./deps/julia_port/julia` and `./deps/julia_port/data` to `./julia` and `./data` respectively
### usage
* simple_test: arithmetics
```elixir
def simple_test(port) do
port_send(port, "1+2")
IO.puts port_receive(port, true)
end
```
* complex_test: linear algebra
```elixir
use GenFunction, [rand: 2, sum: 1, *: 2]
def complex_test(port) do
rand(port, :a, 3, 3)
rand(port, :b, 3, 3)
JuliaPort.*(port, :c, :a, :b)
port_receive(port, false)
sum(port, :d, :c)
IO.puts port_receive(port, true)
end
```
* script_test: linear regression
```elixir
use GenFunction, [load_data: 1, lr_train: 2, lr_test: 3]
def script_test(port) do
include_script(port, "./julia/lr.jl")
load_data(port, {:x_train, :y_train}, "./data/train")
load_data(port, {:x_test, :y_test}, "./data/test")
lr_train(port, :beta, :x_train, :y_train)
port_receive(port, false)
lr_test(port, :error, :x_test, :y_test, :beta)
IO.puts port_receive(port, true)
end
```
* run
```elixir
iex -S mix
port = JuliaPort.init
# => #Port<0.5310>
JuliaPort.print_version port
# => received data: v"1.0.0"
JuliaPort.simple_test port
# => received data: 3
JuliaPort.complex_test port
# => received data: 5.710327361153192
JuliaPort.script_test port
# => received data: 0.9587912087912088
JuliaPort.terminate port
# => {#PID<0.143.0>, :close}
```
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