sequence_cognition_20.plantuml

@startuml
box "Client"
  actor "Client" as client
  participant "Client dApp" as dapp
end box

box "Distributed Data"
  entity "Pandora Contracts" as pandora
  database "IPFS" as ipfs
end box

box "Workers"
  collections "Worker Nodes" as workers
  control "Keras/TensorFlow" as nn
  collections "Validating Nodes" as validators
end box

entity "Cognition Contract" as cognition

== Cognition ==

activate workers
workers -> cognition: readData
cognition --> workers: < cognitive job info >
workers ->> ipfs: download
... downloading ...
ipfs -->> workers: < files >
workers -> workers: integrityCheck
workers -> workers: consistencyCheck
alt Data are incorrect
  workers ->> cognition: incorrectData
  cognition ->> pandora: arbitrateInvalidData
  ref over pandora, workers, validators: Data artibitrage
  |||
else Data are correct
  workers -> nn: loadNetwork
  activate nn
  workers -> nn: getDetails
  activate pandora
  alt Worker declines
    workers ->> pandora: jobDeclined
    pandora -[#red]->x workers: penalty
    group repeat [workers lottery]
    end
    |||
  else Worker accepts job
    workers ->> pandora: jobAccepted(timeEstimation)
    pandora -> pandora: updateWorkers
    deactivate pandora
    workers ->> nn: compute
  ... computing ...
    nn -->> workers: < results >
    deactivate nn
    workers ->> ipfs: upload
  ... uploading ...
    ipfs -->> workers: < addresses >
    opt timeout
      pandora -[#blue]->> workers: updateTimeEstimation
      activate pandora
      alt Worker responses
        workers ->> pandora: updateTimeEstimation
        pandora -[#red]->x workers: smallPenalty
      else Worker does not response
        pandora -[#red]->x workers: penalty
        group repeat [workers lottery]
        end
      end
      deactivate pandora
    end
    workers -> cognition: acceptResults
    deactivate workers
    activate cognition
  end
end

== Validation ==

ref over pandora, cognition: Validation
|||
@enduml