Reproducible BioCompute Objects using Common Workflow Language

Stian Soiland-Reyes

eScience lab, The University of Manchester

BioCompute Objects Proof of Concept Workshop
Washington DC, 2018-03-23

This work is licensed under a
Creative Commons Attribution 4.0 International License.

researchobject.org

@soilandreyes

http://orcid.org/0000-0001-9842-9718
http://slides.com/soilandreyes/

a metagenomics case study

https://doi.org/10.1038/sdata.2016.18

Findable

Accessible

Interoperable

Reusable

https://doi.org/10.1038/sdata.2016.18

To be Findable:

F1. (meta)data are assigned a globally unique and persistent identifier

F2. data are described with rich metadata (defined by R1 below)

F3. metadata clearly and explicitly include the identifier of the data it describes

F4. (meta)data are registered or indexed in a searchable resource

To be Accessible:

A1. (meta)data are retrievable by their identifier using a standardized communications protocol

A1.1 the protocol is open, free, and universally implementable

A1.2 the protocol allows for an authentication and authorization procedure, where necessary

A2. metadata are accessible, even when the data are no longer available

To be Interoperable:

I1. (meta)data use a formal, accessible, shared, and broadly applicable language for knowledge representation.

I2. (meta)data use vocabularies that follow FAIR principles

I3. (meta)data include qualified references to other (meta)data

To be Reusable:

R1. meta(data) are richly described with a plurality of accurate and relevant attributes

R1.1. (meta)data are released with a clear and accessible data usage license

R1.2. (meta)data are associated with detailed provenance

R1.3. (meta)data meet domain-relevant community standards

Inner source

Use of open source software development best practices and the establishment of an open source-like culture within organizations.

The organization may still develop proprietary software, but internally opens up its development.

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

Inner FAIR

https://twitter.com/biocrusoe/status/976827491460493312

id:        doi:10.15490/seek.1.investigation.56
createdOn: 2015-07-10T16:46:00Z
createdBy: http://orcid.org/0000-0001-9842-9718

aggregates:
 - id:         data/sequence/specimen5.bam
   conformsTo: http://gemrb.org/iesdp/file_formats/ie_formats/bam_v1.htm

 - id:         http://example.com/blog/about-specimen5
   authoredBy: http://orcid.org/0000-0001-7066-3350

 - id:         http://www.myexperiment.org/workflows/3355
   history:    provenance/workflow-evolution.ttl

annotations:
 - about:       data/sequence/specimen5.bam
   content:     annotations/specimen5-properties.jsonld
   createdBy:   http://orcid.org/0000-0001-7066-3350

 - about:       data/sequence/specimen5.bam
   content:     http://example.com/blog/about-specimen5
   motivatedBy: oa:questioning

Research Object manifest

(simplified)

Reuse standards:
OAI-ORE, BagIt, W3C JSON-LD, PROV, Web Annotation Model

metadata/manifest.json
data/sequence/specimen5.bam
provenance/workflow-evolution.ttl
http://example.com/blog/about-specimen5
http://www.myexperiment.org/workflows/335

http://orcid.org/0000-0001-7066-3350
http://gemrb.org/iesdb/
   file_formats_ie_formats_bam_v1.html

https://w3id.org/ro/bagit
doi:10.1109/BigData.2016.7840618

www.ietf.org/id/draft-kunze-bagit

https://twitter.com/vtenhunen/status/976767747647574016

https://www.w3.org/TR/json-ld/

https://json-ld.org/

http://bioschemas.org/

http://schema.org

http://www.openarchives.org/ore/

http://www.w3.org/TR/annotation-model/

Copyright © 2013 W3C® (MIT, ERCIM, Keio, Beihang), All Rights Reserved.
W3C liability, trademark and document use rules apply.

PROV Model Primer

W3C Working Group Note 30 April 2013

http://www.w3.org/TR/prov-primer/

https://orcid.org/

Who is using Research Objects?

Workshop on Research Objects (RO2018)

http://www.researchobject.org/ro2018/

2018-10-29

IEEE eScience Conference 2018,
Amsterdam, Netherlands

Prospective provenance

Capture the method

Yong Zhao, Michael Wilde, Ian Foster (2006):

Applying the virtual data provenance model.
International Provenance and Annotation Workshop (IPAW) 2006

https://doi.org/10.1007/11890850_16

http://www.commonwl.org/

cwlVersion: v1.0
class: Workflow
inputs:
  inp: File
  ex: string

outputs:
  classout:
    type: File
    outputSource: compile/classfile

steps:
  untar:
    run: tar-param.cwl
    in:
      tarfile: inp
      extractfile: ex
    out: [example_out]

  compile:
    run: arguments.cwl
    in:
      src: untar/example_out
    out: [classfile]

http://eoscpilot.eu/

https://commonfund.nih.gov/bd2k/commons/

http://ga4gh.cloud/

http://elixir-europe.org/

https://github.com/rabix/composer

https://view.commonwl.org/

https://w3id.org/cwl/view/git/933…/workflows/hello/hello.cwl#main

{
  "@context" : [ "https://w3id.org/bundle/context" ],
  "id" : "/",
  "manifest" : [ "manifest.json" ],
  "createdOn" : "2017-08-24T10:57:46.325Z",
  "createdBy" : {
    "uri" : "https://view.commonwl.org",
    "name" : "Common Workflow Language Viewer"
  },
  "authoredBy" : [ {
    "uri" : "mailto:peter.amstutz@curoverse.com",
    "name" : "Peter Amstutz"
  }, {
    "uri" : "mailto:luka.stojanovic@sbgenomics.com",
    "name" : "Luka Stojanovic"
  }, {
    "uri" : "mailto:crusoe@ucdavis.edu",
    "name" : "Michael R. Crusoe"
  }, {
    "uri" : "mailto:porter@porter.st",
    "name" : "Andrey Kartashov"
  }, {
    "uri" : "mailto:janko.simonovic@sbgenomics.com",
    "name" : "Janko Simonovic"
  } ],
  "retrievedFrom" : "https://github.com/common-workflow-language/workflows/blob/lobstr-v1/workflows/lobSTR/",
  "retrievedOn" : "2017-08-24T10:57:46.325Z",
  "retrievedBy" : {
    "uri" : "https://view.commonwl.org",
    "name" : "Common Workflow Language Viewer"
  },
  "history" : [ "http:/git2prov.org/git2prov?giturl=https:/github.com/common-workflow-language/workflows.git&serialization=PROV-JSON" ],
  "aggregates" : [ {
    "uri" : "/workflow/tmp_2.fq",
    "mediatype" : "application/octet-stream",
    "createdOn" : "2017-08-24T10:57:46.923Z",
    "authoredBy" : [ {
      "uri" : "mailto:peter.amstutz@curoverse.com",
      "name" : "Peter Amstutz"
    } ],
    "retrievedFrom" : "https://raw.githubusercontent.com/common-workflow-language/workflows/lobstr-v1/workflows/lobSTR/tmp_2.fq",
    "retrievedBy" : {
      "uri" : "https://view.commonwl.org",
      "name" : "Common Workflow Language Viewer"
    },
    "bundledAs" : {
      "uri" : "urn:uuid:61579f3e-63e6-49c2-b780-f67b2df461b7",
      "folder" : "/workflow/"
    }
  }, {
    "uri" : "/workflow/lobSTR-demo.json",
    "mediatype" : "application/json",
    "createdOn" : "2017-08-24T10:57:47.216Z",
    "authoredBy" : [ {
      "uri" : "mailto:peter.amstutz@curoverse.com",
      "name" : "Peter Amstutz"
    } ],
    "retrievedFrom" : "https://raw.githubusercontent.com/common-workflow-language/workflows/lobstr-v1/workflows/lobSTR/lobSTR-demo.json",
    "retrievedBy" : {
      "uri" : "https://view.commonwl.org",
      "name" : "Common Workflow Language Viewer"
    },
    "bundledAs" : {
      "uri" : "urn:uuid:973caa0e-f3bd-45e8-8d29-70123bc8715a",
      "folder" : "/workflow/"
    }
  }, {
    "uri" : "/workflow/models/illumina_v3.pcrfree.stuttermodel",
    "mediatype" : "application/octet-stream",
    "createdOn" : "2017-08-24T10:57:47.239Z",
    "authoredBy" : [ {
      "uri" : "mailto:peter.amstutz@curoverse.com",
      "name" : "Peter Amstutz"
    } ],
    "retrievedFrom" : "https://raw.githubusercontent.com/common-workflow-language/workflows/lobstr-v1/workflows/lobSTR/models/illumina_v3.pcrfree.stuttermodel",
    "retrievedBy" : {
      "uri" : "https://view.commonwl.org",
      "name" : "Common Workflow Language Viewer"
    },
    "bundledAs" : {
      "uri" : "urn:uuid:62bbcbea-f34f-463f-990d-6148f8ed5e5c",
      "folder" : "/workflow/models/"
    }
  }, {
    "uri" : "/workflow/models/illumina_v3.pcrfree.stepmodel",
    "mediatype" : "application/octet-stream",
    "createdOn" : "2017-08-24T10:57:47.266Z",
    "authoredBy" : [ {
      "uri" : "mailto:peter.amstutz@curoverse.com",
      "name" : "Peter Amstutz"
    } ],
    "retrievedFrom" : "https://raw.githubusercontent.com/common-workflow-language/workflows/lobstr-v1/workflows/lobSTR/models/illumina_v3.pcrfree.stepmodel",
    "retrievedBy" : {
      "uri" : "https://view.commonwl.org",
      "name" : "Common Workflow Language Viewer"
    },
    "bundledAs" : {
      "uri" : "urn:uuid:03439ae7-cd94-42a3-b5fe-40bfff6882d8",
      "folder" : "/workflow/models/"
    }
  }, {
    "uri" : "/workflow/samtools-sort.cwl",
    "mediatype" : "text/x-yaml",
    "createdOn" : "2017-08-24T10:57:47.269Z",
    "authoredBy" : [ {
      "uri" : "mailto:luka.stojanovic@sbgenomics.com",
      "name" : "Luka Stojanovic"
    }, {
      "uri" : "mailto:crusoe@ucdavis.edu",
      "name" : "Michael R. Crusoe"
    }, {
      "uri" : "mailto:porter@porter.st",
      "name" : "Andrey Kartashov"
    }, {
      "uri" : "mailto:peter.amstutz@curoverse.com",
      "name" : "Peter Amstutz"
    } ],
    "retrievedFrom" : "https://raw.githubusercontent.com/common-workflow-language/workflows/lobstr-v1/workflows/lobSTR/samtools-sort.cwl",
    "retrievedBy" : {
      "uri" : "https://view.commonwl.org",
      "name" : "Common Workflow Language Viewer"
    },
    "conformsTo" : "https://w3id.org/cwl/v1.0",
    "bundledAs" : {
      "uri" : "urn:uuid:2dc07859-efc2-4945-a95f-ba7815b68d07",
      "folder" : "/workflow/"
    }
  }, {
    "uri" : "/workflow/lobSTR-workflow.cwl",
    "mediatype" : "text/x-yaml",
    "createdOn" : "2017-08-24T10:57:47.42Z",
    "authoredBy" : [ {
      "uri" : "mailto:luka.stojanovic@sbgenomics.com",
      "name" : "Luka Stojanovic"
    }, {
      "uri" : "mailto:crusoe@ucdavis.edu",
      "name" : "Michael R. Crusoe"
    }, {
      "uri" : "mailto:peter.amstutz@curoverse.com",
      "name" : "Peter Amstutz"
    } ],
    "retrievedFrom" : "https://raw.githubusercontent.com/common-workflow-language/workflows/lobstr-v1/workflows/lobSTR/lobSTR-workflow.cwl",
    "retrievedBy" : {
      "uri" : "https://view.commonwl.org",
      "name" : "Common Workflow Language Viewer"
    },
    "conformsTo" : "https://w3id.org/cwl/v1.0",
    "bundledAs" : {
      "uri" : "urn:uuid:58bc1895-3460-46d6-91d7-fa1718d09631",
      "folder" : "/workflow/"
    }
  }, {
    "uri" : "/workflow/lobSTR-arvados-demo.json",
    "mediatype" : "application/json",
    "createdOn" : "2017-08-24T10:57:47.453Z",
    "authoredBy" : [ {
      "uri" : "mailto:peter.amstutz@curoverse.com",
      "name" : "Peter Amstutz"
    } ],
    "retrievedFrom" : "https://raw.githubusercontent.com/common-workflow-language/workflows/lobstr-v1/workflows/lobSTR/lobSTR-arvados-demo.json",
    "retrievedBy" : {
      "uri" : "https://view.commonwl.org",
      "name" : "Common Workflow Language Viewer"
    },
    "bundledAs" : {
      "uri" : "urn:uuid:30c683bc-69fb-4d93-8dad-65b663783af5",
      "folder" : "/workflow/"
    }
  }, {
    "uri" : "/workflow/samtools-index.cwl",
    "mediatype" : "text/x-yaml",
    "createdOn" : "2017-08-24T10:57:47.458Z",
    "authoredBy" : [ {
      "uri" : "mailto:luka.stojanovic@sbgenomics.com",
      "name" : "Luka Stojanovic"
    }, {
      "uri" : "mailto:crusoe@ucdavis.edu",
      "name" : "Michael R. Crusoe"
    }, {
      "uri" : "mailto:porter@porter.st",
      "name" : "Andrey Kartashov"
    }, {
      "uri" : "mailto:peter.amstutz@curoverse.com",
      "name" : "Peter Amstutz"
    } ],
    "retrievedFrom" : "https://raw.githubusercontent.com/common-workflow-language/workflows/lobstr-v1/workflows/lobSTR/samtools-index.cwl",
    "retrievedBy" : {
      "uri" : "https://view.commonwl.org",
      "name" : "Common Workflow Language Viewer"
    },
    "conformsTo" : "https://w3id.org/cwl/v1.0",
    "bundledAs" : {
      "uri" : "urn:uuid:8235d3f8-6927-4f73-b160-8521838a1cbb",
      "folder" : "/workflow/"
    }
  }, {
    "uri" : "/workflow/lobSTR-tool.cwl",
    "mediatype" : "text/x-yaml",
    "createdOn" : "2017-08-24T10:57:47.476Z",
    "authoredBy" : [ {
      "uri" : "mailto:luka.stojanovic@sbgenomics.com",
      "name" : "Luka Stojanovic"
    }, {
      "uri" : "mailto:crusoe@ucdavis.edu",
      "name" : "Michael R. Crusoe"
    }, {
      "uri" : "mailto:peter.amstutz@curoverse.com",
      "name" : "Peter Amstutz"
    } ],
    "retrievedFrom" : "https://raw.githubusercontent.com/common-workflow-language/workflows/lobstr-v1/workflows/lobSTR/lobSTR-tool.cwl",
    "retrievedBy" : {
      "uri" : "https://view.commonwl.org",
      "name" : "Common Workflow Language Viewer"
    },
    "conformsTo" : "https://w3id.org/cwl/v1.0",
    "bundledAs" : {
      "uri" : "urn:uuid:7fa6fbe4-1fc5-4cb5-9c1a-56b96c5f7aaf",
      "folder" : "/workflow/"
    }
  }, {
    "uri" : "/workflow/allelotype.cwl",
    "mediatype" : "text/x-yaml",
    "createdOn" : "2017-08-24T10:57:47.537Z",
    "authoredBy" : [ {
      "uri" : "mailto:luka.stojanovic@sbgenomics.com",
      "name" : "Luka Stojanovic"
    }, {
      "uri" : "mailto:janko.simonovic@sbgenomics.com",
      "name" : "Janko Simonovic"
    }, {
      "uri" : "mailto:crusoe@ucdavis.edu",
      "name" : "Michael R. Crusoe"
    }, {
      "uri" : "mailto:peter.amstutz@curoverse.com",
      "name" : "Peter Amstutz"
    } ],
    "retrievedFrom" : "https://raw.githubusercontent.com/common-workflow-language/workflows/lobstr-v1/workflows/lobSTR/allelotype.cwl",
    "retrievedBy" : {
      "uri" : "https://view.commonwl.org",
      "name" : "Common Workflow Language Viewer"
    },
    "conformsTo" : "https://w3id.org/cwl/v1.0",
    "bundledAs" : {
      "uri" : "urn:uuid:3706bd2f-e53f-431d-b32a-deb661d9b292",
      "folder" : "/workflow/"
    }
  }, {
    "uri" : "/workflow/README",
    "mediatype" : "application/octet-stream",
    "createdOn" : "2017-08-24T10:57:47.555Z",
    "authoredBy" : [ {
      "uri" : "mailto:crusoe@ucdavis.edu",
      "name" : "Michael R. Crusoe"
    }, {
      "uri" : "mailto:peter.amstutz@curoverse.com",
      "name" : "Peter Amstutz"
    } ],
    "retrievedFrom" : "https://raw.githubusercontent.com/common-workflow-language/workflows/lobstr-v1/workflows/lobSTR/README",
    "retrievedBy" : {
      "uri" : "https://view.commonwl.org",
      "name" : "Common Workflow Language Viewer"
    },
    "bundledAs" : {
      "uri" : "urn:uuid:ed54c4d6-c585-4dc9-b7bc-0cf299e20b91",
      "folder" : "/workflow/"
    }
  }, {
    "uri" : "/workflow/tmp_1.fq",
    "mediatype" : "application/octet-stream",
    "createdOn" : "2017-08-24T10:57:47.738Z",
    "authoredBy" : [ {
      "uri" : "mailto:peter.amstutz@curoverse.com",
      "name" : "Peter Amstutz"
    } ],
    "retrievedFrom" : "https://raw.githubusercontent.com/common-workflow-language/workflows/lobstr-v1/workflows/lobSTR/tmp_1.fq",
    "retrievedBy" : {
      "uri" : "https://view.commonwl.org",
      "name" : "Common Workflow Language Viewer"
    },
    "bundledAs" : {
      "uri" : "urn:uuid:5d431f81-ad0b-4acf-903a-9d5aa03b04df",
      "folder" : "/workflow/"
    }
  }, {
    "uri" : "/visualisation.png",
    "mediatype" : "image/png",
    "createdOn" : "2017-08-24T10:57:47.801Z",
    "retrievedFrom" : "https://view.commonwl.org/graph/png/github.com/common-workflow-language/workflows/blob/lobstr-v1/workflows/lobSTR/lobSTR-workflow.cwl",
    "bundledAs" : {
      "uri" : "urn:uuid:ff9ace37-e76c-49f8-8d36-60f11ff6d257",
      "folder" : "/"
    }
  }, {
    "uri" : "/visualisation.svg",
    "mediatype" : "image/svg+xml",
    "createdOn" : "2017-08-24T10:57:47.821Z",
    "retrievedFrom" : "https://view.commonwl.org/graph/svg/github.com/common-workflow-language/workflows/blob/lobstr-v1/workflows/lobSTR/lobSTR-workflow.cwl",
    "bundledAs" : {
      "uri" : "urn:uuid:a6cfb437-8818-4ab2-9081-efc74c5109e8",
      "folder" : "/"
    }
  } ],
  "annotations" : [ {
    "uri" : "urn:uuid:9f602fff-b280-41c5-9590-ab95a49c85ad",
    "about" : "/",
    "content" : "annotations/merged.cwl"
  }, {
    "uri" : "urn:uuid:0ce4b727-ff61-4534-9afb-e3d676d2782d",
    "about" : "/",
    "content" : "annotations/workflow.ttl"
  } ]
}

https://view.commonwl.org/

#!/usr/bin/env cwl-runner
cwlVersion: v1.0
class: Workflow

label: "Hello World"
doc: "Outputs a message using echo"

inputs: []

outputs:
  response:
    outputSource: step0/response
    type: File

steps:
  step0:
    run:
      class: CommandLineTool
      inputs:
        message:
          type: string
          doc: "The message to print"
          default: "Hello World"
          inputBinding:
            position: 1
      baseCommand: echo
      stdout: response.txt
      outputs:
        response:
          type: stdout
    in: []
    out: [response]

Retrospective provenance

Capture what happened

https://doi.org/10.7490/f1000research.1114781.1

Farah Z Khan

https://w3id.org/ro/2016-01-28/wfprov/

Identifying intermediate data

Output 1B file is also Input 2C and Input 3D downstream

Simple filenames -> duplications

  ./data/step1/outputB.txt 
./data/step2/inputC.txt
./data/step3/inputD.txt

Content-adressable

SHA-256 hash of bytes as filename:

./data/51/51fb8af0c4ae0422fbe88340d91880ecb9d7537cf57339c1cf1256b7ca58f32d

RFC6920 URI as global identifier:

nih:sha-256;51fb8af0c4ae0422fbe88340d91880ecb9d7537cf57339c1cf1256b7ca58f32d

www.ietf.org/id/draft-soilandreyes-arcp

arcp://uuid,32a423d6-52ab-47e3-a9cd-54f418a48571/biocompute.json
arcp://uuid,32a423d6-52ab-47e3-a9cd-54f418a48571/data/sequence.bam

arcp://ni,sha-256;f4OxZX_x_FO5LcGBSKHWXfwtSx-j1ncoSt3SABJtkGk/biocompute.json
arcp://ni,sha-256;f4OxZX_x_FO5LcGBSKHWXfwtSx-j1ncoSt3SABJtkGk/data/sequence.json

stain@biggie:~$  sha256sum biocompute-archive.zip
7f83b1657ff1fc53b92dc18148a1d65dfc2d4b1fa3d677284addd200126d9069

https://www.ebi.ac.uk/metagenomics/pipelines/

https://doi.org/10.1093/nar/gkx967

cwlVersion: v1.0
class: Workflow
label: EMG QC workflow, (paired end version). Benchmarking with MG-RAST expt.

requirements:
 - class: SubworkflowFeatureRequirement
 - class: SchemaDefRequirement
   types: 
    - $import: ../tools/FragGeneScan-model.yaml
    - $import: ../tools/trimmomatic-sliding_window.yaml
    - $import: ../tools/trimmomatic-end_mode.yaml
    - $import: ../tools/trimmomatic-phred.yaml

inputs:
  reads:
    type: File
    format: edam:format_1930  # FASTQ

outputs:
  processed_sequences:
    type: File
    outputSource: clean_fasta_headers/sequences_with_cleaned_headers

steps:
  trim_quality_control:
    doc: |
      Low quality trimming (low quality ends and sequences with < quality scores
      less than 15 over a 4 nucleotide wide window are removed)
    run: ../tools/trimmomatic.cwl
    in:
      reads1: reads
      phred: { default: '33' }
      leading: { default: 3 }
      trailing: { default: 3 }
      end_mode: { default: SE }
      minlen: { default: 100 }
      slidingwindow:
        default:
          windowSize: 4
          requiredQuality: 15
    out: [reads1_trimmed]

  convert_trimmed-reads_to_fasta:
    run: ../tools/fastq_to_fasta.cwl
    in:
      fastq: trim_quality_control/reads1_trimmed
    out: [ fasta ]

  clean_fasta_headers:
    run: ../tools/clean_fasta_headers.cwl
    in:
      sequences: convert_trimmed-reads_to_fasta/fasta
    out: [ sequences_with_cleaned_headers ]


$namespaces:
 edam: http://edamontology.org/
 s: http://schema.org/
$schemas:
 - http://edamontology.org/EDAM_1.16.owl
 - https://schema.org/docs/schema_org_rdfa.html

s:license: "https://www.apache.org/licenses/LICENSE-2.0"
s:copyrightHolder: "EMBL - European Bioinformatics Institute"

https://github.com/EBI-Metagenomics/ebi-metagenomics-cwl/

{
  "id": "https://w3id.org/cwl/view/git/886df9de6713e06228d2560c40f451155a196383/workflows/emg-qc-single.cwl",
  "name": "EMG QC workflow, (paired end version)",
  "structured_name": "EMG QC workflow, (paired end version). Benchmarking with MG-RAST expt.",
  "version": "0.0.886df9de6713e06228d2560c40f451155a196383",
  "digital_signature": "886df9de6713e06228d2560c40f451155a196383",
  "verification_status": "unreviewed",
  "publicaton_status": "open_access",
  "authors": ["https://orcid.org/0000-0001-8626-2148", 
              "https://orcid.org/0000-0002-2961-9670"],
  "usability_domain": ["metagenomics"],
  "description_domain": {
    "keywords": ["quality control", "trimming"],
    "github_extension": {
      "github_repository": "EBI-Metagenomics/ebi-metagenomics-cwl",
      "github_url": "https://github.com/EBI-Metagenomics/ebi-metagenomics-cwl/",
      "github_uri": ["workflows/emg-qc-single.cwl"]
    },
}

Workflow metadata as BioCompute Object


    "pipeline_steps": [
      { "tool_name": "trim_quality_control",
        "tool_desc": "Low quality trimming (low quality ends and sequences with < quality scores
      less than 15 over a 4 nucleotide wide window are removed)",
        "tool_version": "0.32",
        "tool_package": ["trimmomatic [rrid:RRID:SCR_011848] version 0.32+dfsg-1", 
                         "openjdk-7-jre-headless"],
        "step_number": "1",
        "input_uri": {
          "reference_files": [],
          "input_file_list": [
            "arcp://21f3a974-7b58-58d1-9687-7d5735aad6bd/tools/otu_table.biom"
          ]
        },
        "output_uri_list": [ 
          "arcp://97b36186-13d9-497c-b2bb-7d41c995f4ee/data/51/51fb8af0c4ae0422fbe88340d91880ecb9d7537cf57339c1cf1256b7ca58f32d"]
      },
      { "tool_name": "convert_trimmed-reads_to_fasta"
        "input_uri": {
          "input_file_list": [ 
            "arcp://97b36186-13d9-497c-b2bb-7d41c995f4ee/data/51/51fb8af0c4ae0422fbe88340d91880ecb9d7537cf57339c1cf1256b7ca58f32d"]
        }, ..
      },
      { "tool_name": "clean_fasta_headers"
        ..
      },      
    ],

Prospective(?) provenance as BioCompute Object

"execution_domain": {
    "script_type": "URI",
    "script": "https://raw.githubusercontent.com/EBI-Metagenomics/ebi-metagenomics-cwl/c34db66a79cec3b66a0f1be5e499eef88db5a9ed/workflows/emg-qc-single.cwl",
    "script": "https://w3id.org/cwl/view/git/886df9de6713e06228d2560c40f451155a196383/workflows/emg-qc-single.cwl?format=yaml",
    "platform": "cwl",
    "driver": "cwl",
    "software_prerequisities": [
      {"name": "trimmomatic",             "version":"0.32"}, 
      {"name": "openjdk-7-jre-headless",  "version": "7"},
      {"name": "biopython",               "version": "1.69"}
    ],
    "env_parameters": [ 
      {
       "ramMin": "10240",
       "coresMin": "8" 
      } 
   ]
}

Execution domain for CWL workflow

"parametric_domain": {
  "phred": "33",
  "leading": "3",
  "trailing": "3",
  "end_mode": "SE",
  "minlen": "100",
  "slidingwindow": {
     "windowSize": "4",
     "requiredQuality": "15"
  }
}

Parametric domain for CWL workflow

inputs:
  phred:
    type: trimmomatic-phred.yaml#phred?
    doc: "33" or "64" specifies the base quality encoding. Default: 64

  leading:
    type: int?
    doc: |
      Remove low quality bases from the beginning. As long as a base has a value 
      below this threshold the base is removed and the next base will be investigated.

  trailing:
    type: int?
    doc: |
      Remove low quality bases from the end. As long as a base has a value
      below this threshold the base is removed and the next base (which as
      trimmomatic is starting from the 3' prime end would be base preceding
      the just removed base) will be investigated. This approach can be used
      removing the special Illumina "low quality segment" regions (which are
      marked with quality score of 2), but we recommend Sliding Window or
      MaxInfo instead
  end_mode:
    type: trimmomatic-end_mode.yaml#end_mode
    doc: |
      Single End (SE) or Paired End (PE) mode

  minlen:
    type: int?
    doc: |
      This module removes reads that fall below the specified minimal length.
      If required, it should normally be after all other processing steps.
      Reads removed by this step will be counted and included in the "dropped
      reads" count presented in the trimmomatic summary.

  slidingwindow:
    type: trimmomatic-sliding_window.yaml#slidingWindow?
    doc: |
      Perform a sliding window trimming, cutting once the average quality
      within the window falls below a threshold. By considering multiple
      bases, a single poor quality base will not cause the removal of high
      quality data later in the read.
      <windowSize> specifies the number of bases to average across
      <requiredQuality> specifies the average quality required

"io_domain": {
   "input_subdomain": {
      "reference_files": [],
      "input_file_list": {
          "reads": [
            "arcp://21f3a974-7b58-58d1-9687-7d5735aad6bd/tools/otu_table.biom"
          ]
      }
   },

  "output_subdomain": {
    "processed_sequences": [
      {
         "title": "sequences_with_cleaned_headers [edam:format_1929]"
         "uri": "arcp://97b36186-13d9-497c-b2bb-7d41c995f4ee/data/7c/7cf57339c1cf1256b7ca58f32d51fb8af0c4ae0422fbe88340d91880ecb9d753"
         "mime-type": "text/x-fasta"
      },
    ],
}

IO domain for CWL workflow

13:15 -> 14:00
Breakout group D

Leverage existing efforts to realize the BioCompute vision

What existing standards, efforts, and specifications can contribute to the BCO vision?