leobessa

Getting Lazy with Dataflow Graphs in Elixir

Intro

What do Tensorflow, Apache Airflow, Rule Engines, and Excel have in common?

Under the hood they all use DAGs to model data-flow dependencies of the program. Using graphs to model programs is great because you can modify the program at runtime. Lets talk about doing this in Elixir for great good.

leobessa

2024-01-02,00123Q104,9.6600000000
2024-01-02,00130H105,19.3400000000
2024-01-02,00206R102,17.2500000000
2024-01-02,00206RHJ4,983.1800000000
2024-01-02,00206RKG6,886.8200000000
2024-01-02,00206RMM1,809.1800000000
2024-01-02,00214Q104,50.5000000000
2024-01-02,00214Q302,32.7200000000
2024-01-02,00214Q708,26.3300000000
2024-01-02,00215W100,9.0800000000

leobessa

@doc """
Asserts that the given changeset is invalid, and that when the
assertion_expression is applied to the error_message it results in a truthy
value.
"""
defmacro assert_invalid(changeset, field, assertion_expression) when is_atom(field) do
  expr = Macro.to_string(assertion_expression)

  quote do
    error_messages = unquote(changeset)

leobessa

Dir["./**/*.jar"].map do |f|
  group_dir, artifact_id, version, file_name = f.reverse.split("/", 4).map(&:reverse).reverse
  path = File.absolute_path f
  group_id = group_dir.sub("./","").gsub("/",".")
  packaging = "jar"
  pom_path =  path.sub /\.[^.]+\z/, ".pom"
  "mvn install:install-file -Dfile=#{path} -DgroupId=#{group_id} -DartifactId=#{artifact_id} -Dversion=#{version} -Dpackaging=#{packaging} -DpomFile=#{pom_path} -DcreateChecksum=true"
end

leobessa

Keybase proof

I hereby claim:

• I am leobessa on github.
• I am leobessa (https://keybase.io/leobessa) on keybase.
• I have a public key ASCOWpKCSTYeyNpiZsvLccj-Q2OWHTB__xvUIs4JalibFwo

To claim this, I am signing this object:

leobessa

README COBAN

URL

A url para integração com a COBAN segue o seguinte modelo:

https://totvs.coban.myconsig.com.br/token/%{jwt}

JWT

leobessa

Problema

Um hospital deseja gerar a escala de plantão noturna de 5 farmacêuticos para o mês de Dezembro de 2015. Durante todo o mês será necessária a presença de pelo menos 2 farmacêuticos de plantão. Os farmacêuticos f1, f2, f3, f4 e f5 trabalham no regime 12X36, com cargas horárias quem demandam 12, 13, 10, 12 e 10 plantões respectivamte. Além disso, todos funcionários devem ter pelo menos 1 (uma) folga de 24h (ao todo ou em parte) no domingo a cada 4 semanas.

Formulação do problema usando PL

Seja X uma matriz 5x31, onde:

leobessa

[{"lifetime":"['2015-12-01T07:00:00-02:00','2015-12-01T13:00:00-02:00')","name":"Alexandre S. Cauduro","site_abbr":"P1","reward_units":0.5},{"lifetime":"['2015-12-01T07:00:00-02:00','2015-12-01T13:00:00-02:00')","name":"Paula Vargas de Saboya","site_abbr":"P2","reward_units":0.5},{"lifetime":"['2015-12-01T07:00:00-02:00','2015-12-01T13:00:00-02:00')","name":"Claudia Carolina Vieira Silva Davini","site_abbr":"P3","reward_units":0.5},{"lifetime":"['2015-12-01T13:00:00-02:00','2015-12-01T19:00:00-02:00')","name":"German Salinas Perez","site_abbr":"P1","reward_units":0.5},{"lifetime":"['2015-12-01T13:00:00-02:00','2015-12-01T19:00:00-02:00')","name":"Paula Vargas de Saboya","site_abbr":"P2","reward_units":0.5},{"lifetime":"['2015-12-01T13:00:00-02:00','2015-12-01T19:00:00-02:00')","name":"Elssi Espinosa","site_abbr":"P3","reward_units":0.5},{"lifetime":"['2015-12-01T19:00:00-02:00','2015-12-02T07:00:00-02:00')","name":"Alessandra","site_abbr":"P1","reward_units":1},{"lifetime":"['2015-12-01T19:00:00-02:00','2015-

leobessa

[{"lifetime":"['2015-12-01T07:00:00-02:00','2015-12-01T13:00:00-02:00')","name":"Alexandre S. Cauduro","site_abbr":"P1"},{"lifetime":"['2015-12-01T07:00:00-02:00','2015-12-01T13:00:00-02:00')","name":"Paula Vargas de Saboya","site_abbr":"P2"},{"lifetime":"['2015-12-01T07:00:00-02:00','2015-12-01T13:00:00-02:00')","name":"Claudia Carolina Vieira Silva Davini","site_abbr":"P3"},{"lifetime":"['2015-12-01T13:00:00-02:00','2015-12-01T19:00:00-02:00')","name":"German Salinas Perez","site_abbr":"P1"},{"lifetime":"['2015-12-01T13:00:00-02:00','2015-12-01T19:00:00-02:00')","name":"Paula Vargas de Saboya","site_abbr":"P2"},{"lifetime":"['2015-12-01T13:00:00-02:00','2015-12-01T19:00:00-02:00')","name":"Elssi Espinosa","site_abbr":"P3"},{"lifetime":"['2015-12-01T19:00:00-02:00','2015-12-02T07:00:00-02:00')","name":"Alessandra","site_abbr":"P1"},{"lifetime":"['2015-12-01T19:00:00-02:00','2015-12-02T07:00:00-02:00')","name":"Alexandre S. Cauduro","site_abbr":"P2"},{"lifetime":"['2015-12-01T19:00:00-02:00','2015-12-02T07:00

leobessa

set WORKERS = 1..5;
set DAYS = 1..31;
set WORKER_DEMAND = {13,13,12,13,13};
set SUNDAYS = {6,13,20,27};

var working {i in DAYS, j in WORKERS} integer >= 0, <= 1;

minimize Total_Work: sum {i in DAYS, j in WORKERS} working[i,j];

subject to Min_Service {i in DAYS}: