How to run

Run docker compose

Run tests

test/test.sh

Deployment

Edit schema and identifiers

ICEES API allows define custom schema and identifiers. The schema is stored at config/features.yml. The identifiers are stored at config/identifiers.yml. Edit them to fit your dataset.

ICEES API has the following assumptions:

• Each table named <table> should have a column named <Table>Id as the identifier where <Table> is <table> capitalized. For example, for table patient, the id column is PatientId.
• Each table has a column named year.

These columns do not need to be specified in features.yml.

Data for database

To insert data into the database when it is first created, for each table in the schema, create a directory with its table name under <data path>, which is set by DATA_PATH in .env, and put csv files under that directory. The csv files should have the same headers as the table. For example, put patient.csv under <data path>/patient and put visit.csv under <data path>/visit.

To generate random samples, run

python samples.py patient 2010 1000 db/data/patient/patient.csv

python samples.py visit 2010 1000 db/data/visit/visit.csv

Start services

The .env file contains environmental variables that control the services. Edit it to fit your application.

ICEES_PORT: the database port in the container

ICEES_HOST: the database host in the container

ICEES_DBUSER: the database user in the container

ICEES_DBPASS: the password for the database user in the container

POSTGRES_PASSWORD: the password for database user postgres in the container

ICEES_DATABASE: the database name in the container

ICEES_API_LOG_PATH: the path where logs are stored on the host

ICEES_API_HOST_PORT: the port where icees api is listening to on the host

OPENAPI_HOST: the host where icees api is deployed

OPENAPI_SCHEME: the protocol where icees api is deployed

DATA_PATH: the directory where database tables csvs are stored on the host

DB_PATH: the directory where the database files are stored on the host

CONFIG_PATH: the directory where schema and identifiers are stored

ICEES_API_INSTANCE_NAME: icees api instance name

run

docker-compose up --build -d

Build Container

docker build . -t icees-api:0.4.0

REST API

features schema

A feature qualifier limits values of a feature

<operator> ::= <
             | >
             | <=
             | >=
             | = 
             | <>`

<feature_qualifier> ::= {"operator":<operator>, "value":<value>}
                      | {"operator":"in", "values":[<value>, ..., <value>]}
                      | {"operator":"between", "value_a":<value>, "value_b":<value>}

There are two ways to specify a feature or a set of features, using a list or a dict. We show the schema for the former first, then show the schema for the latter.

<feature> ::= {
    "feature_name": "<feature name>",
    "feature_qualifier": <feature_qualifier>
    [,"year": <year>]
  }

where

feature name: see config/features.yml

year is optional. When year is specified, it uses features from that year, otherwise it gets the year from context

Example:

{
  "feature_name": "AgeStudyStart",
  "feature_qualifier": {
    "operator": "=",
    "value": "0-2"
  }
}

<features> ::= [<feature>, ..., <feature>]

Example:

[{
  "feature_name": "AgeStudyStart",
  "feature_qualifier": {
    "operator": "=",
    "value": "0-2"
  }
}, {
  "feature_name": "ObesityBMI",
  "feature_qualifier": {
    "operator": "=",
    "value": 0
  }
}]

In the apis that allow aggregation of bins, we can specify multiple feature qualifiers for each feature.

<feature2> ::= {
  "feature_name": "<feature name>",
  "feature_qualifiers": [<feature_qualifiere>, ..., <feature_qualifier>]
  [,"year": <year>]
}

Example:

{
  "feature_name": "AgeStudyStart",
  "feature_qualifiers": [
            {
                "operator":"=",
                "value":"0-2"
            }, {
                "operator":"between",
                "value_a":"3-17",
                "value_b":"18-34"
            }, {
                "operator":"in", 
                "values":["35-50","51-69"]
            }, {
                "operator":"=",
                "value":"70+"
            }
  ]
}

Similarly for a set of features

<features2> ::= [<feature2>, ..., <feature2>]

Example:

[{
  "feature_name": "AgeStudyStart",
  "feature_qualifiers": [
    {
      "operator":"=",
      "value":"0-2"
    }, {
      "operator":"between",
      "value_a":"3-17",
      "value_b":"18-34"
    }, {
      "operator":"in", 
      "values":["35-50","51-69"]
    },{
      "operator":"=",
      "value":"70+"
    }
  ]
}, {
  "feature_name": "EstResidentialDensity",
  "feature_qualifiers": [
    {
      "operator": "<",
      "value": 1
    }
  ]
}]

in and between are currently only supported in <feature2>.

Now, we turn to define a feature or a feature set using a dict.

<feature> ::= {"<feature name>": <feature_qualifier>} 
<features> ::= {"<feature name>": <feature_qualifier>, ..., "<feature name>": <feature_qualifier>}
<feature2> ::= {"<feature name>": [<feature_qualifier>, ..., <feature_qualifier>]} 
<features2> ::= {"<feature name>": [<feature_qualifier>, ..., <feature_qualifier>], ..., "<feature name>": [<feature_qualifier>, ..., <feature_qualifier>]}

create cohort

method

POST

route

/(patient|visit)/(2010|2011|2012|2013|2014|2015|2016)/cohort

schema

<features>

get cohort definition

method

GET

route

/(patient|visit)/(2010|2011|2012|2013|2014|2015|2016)/cohort/<cohort id>

get cohort features

method

GET

route

/(patient|visit)/(2010|2011|2012|2013|2014|2015|2016)/cohort/<cohort id>/features

get cohort dictionary

method

GET

route

/(patient|visit)/(2010|2011|2012|2013|2014|2015|2016)/cohort/dictionary

feature association between two features

method

POST

route

/(patient|visit)/(2010|2011|2012|2013|2014|2015|2016)/cohort/<cohort id>/feature_association

schema

{"feature_a":<feature>,"feauture_b":<feature>}

feature association between two features using combined bins

method

POST

route

/(patient|visit)/(2010|2011|2012|2013|2014|2015|2016)/cohort/<cohort id>/feature_association2

schema

{"feature_a":<feature2>,"feature_b":<feature2>[,"check_coverage_is_full":<boolean>]}

example

{
    "feature_a": {
      "feature_name": "AgeStudyStart",
      "feature_qualifiers": [
            {
                "operator":"=",
                "value":"0-2"
            }, {
                "operator":"between",
                "value_a":"3-17",
                "value_b":"18-34"
            }, {
                "operator":"in", 
                "values":["35-50","51-69"]
            },{
                "operator":"=",
                "value":"70+"
            }
      ]
    },
    "feature_b": {
      "feature_name": "ObesityBMI",
      "feature_qualifiers": [
            {
                "operator":"=",
                "value":0
            }, {
                "operator":"<>", 
                "value":0
            }
      ]
    }
}

associations of one feature to all features

method

POST

route

/(patient|visit)/(2010|2011|2012|2013|2014|2015|2016)/cohort/<cohort id>/associations_to_all_features

schema

{
  "feature": <feature>,
  "maximum_p_value": <maximum p value>,
  "correction": {
    "method": <correction method>
    [,"alpha": <correction alpha>]
  }
}

where correction is optional, alpha is optional. method and alpha are specified here: https://www.statsmodels.org/dev/generated/statsmodels.stats.multitest.multipletests.html

associations of one feature to all features using combined bins

method

POST

route

/(patient|visit)/(2010|2011|2012|2013|2014|2015|2016)/cohort/<cohort id>/associations_to_all_features2

schema

{
  "feature": <feature>,
  "maximum_p_value": <maximum p value> 
  [,"check_coverage_is_full": <boolean>],
  "correction": {
    "method": <correction method>
    [,"alpha": <correction alpha>]
  }
}

where correction is optional, alpha is optional. method and alpha are specified here: https://www.statsmodels.org/dev/generated/statsmodels.stats.multitest.multipletests.html

example

{
    "feature":{
        "AgeStudyStart":[
            {
                "operator":"=",
                "value":"0-2"
            }, {
                "operator":"between",
                "value_a":"3-17",
                "value_b":"18-34"
            }, {
                "operator":"in", 
                "values":["35-50","51-69"]
            },{
                "operator":"=",
                "value":"70+"
            }
        ]
    },
    "maximum_p_value": 0.1
}

knowledge graph

method

POST

route

/knowledge_graph

input parameters:

• query_options
  • table : ICEES table
  • year : ICEES year
  • cohort_features: features for defining the cohort
  • feature: a feature and operator and value for spliting the cohort to two subcohorts
  • maximum_p_value: ICEES maximum p value. The p value is calculated for each ICEES feature in table, using 2 * n contingency table where the rows are subcohorts and the columns are individual values of that feature. Any feature with p value greater than maximum p value is filtered out.
  • regex: filter target node name by regex.
    example

{
        "query_options": {
            "table": "patient", 
            "year": 2010, 
            "cohort_features": {
                "AgeStudyStart": {
                    "operator": "=",
                    "value": "0-2"
                }
            }, 
            "feature": {
                "EstResidentialDensity": {
                    "operator": "<",
                    "value": 1
                }
            }, 
            "maximum_p_value":1
        }, 
        "machine_question": {
            "nodes": [
                {
                    "id": "n00",
                    "type": "population_of_individual_organisms"
                },
                {
                    "id": "n01",
                    "type": "chemical_substance"
                }   
            ], 
            "edges": [
                {
                    "id": "e00",
                    "type": "association",
                    "source_id": "n00",
                    "target_id": "n01"
                } 
            ]
        }
}

knowledge graph overlay

method

POST

route

/knowledge_graph_overlay?reasoner=

input parameters:

<query_options> ::= {
                      "table": <string>,
                      "year": <integer>,
                      "cohort_features": <features>
                    }
                  | {
                      "cohort_id": <string>
                    }

{
   "message": {
      "query_options": <query_options>,
      "knowledge_graph": <knowledge_graph>
   }
}

if reasoner is specified, then it returns a Reason API response.

knowledge graph one hop

method

POST

route

/knowledge_graph_one_hop?reasoner=

if reasoner is specified, then it returns a Reason API response.

input parameters:

{
   "query_options": <query_options>,
   "query_graph": <query_graph>
}

Examples

get cohort of all patients

curl -k -XPOST https://localhost:8080/patient/2010/cohort -H "Content-Type: application/json" -H "Accept: application/json" -d '{}'

get cohort of all patients active in a year

curl -k -XPOST https://localhost:8080/patient/2010/cohort -H "Content-Type: application/json" -H "Accept: application/json" -d '[{
  "feature_name": "Active_In_Year",
  "feature_qualifier": {
    "operator": "=",
    "value": 1
  }
}]'

get cohort of patients with AgeStudyStart = 0-2

curl -k -XPOST https://localhost:8080/patient/2010/cohort -H "Content-Type: application/json" -H "Accept: application/json" -d '[{
  "feature_name": "AgeStudyStart",
  "feature_qualifier": {
    "operator":"=",
    "value":"0-2"
  }
}]'

Assuming we have cohort id COHORT:10

get definition of cohort

curl -k -XGET https://localhost:8080/patient/2010/cohort/COHORT:10 -H "Accept: application/json"

get features of cohort

curl -k -XGET https://localhost:8080/patient/2010/cohort/COHORT:10/features -H "Accept: application/json"

get cohort dictionary

curl -k -XGET https://localhost:8080/patient/2010/cohort/COHORT:10/features -H "Accept: application/json"

get feature association

curl -k -XPOST https://localhost:8080/patient/2010/cohort/COHORT:10/feature_association -H "Content-Type: application/json" -d '{
  "feature_a": {
    "feature_name": "AgeStudyStart",
    "feature_qualifier: {"operator":"=", "value":"0-2"}
  },
  "feature_b": {
    "feature_name": "ObesityBMI",
    "feature_qualifier": {"operator":"=", "value":0}
  }
}'

get association to all features

curl -k -XPOST https://localhost:8080/patient/2010/cohort/COHORT:10/associations_to_all_features -H "Content-Type: application/json" -d '{
  "feature": {
    "feature_name": "AgeStudyStart",
    "feature_qualifier": {"operator":"=", "value":"0-2"}
  },
  "maximum_p_value":0.1
}' -H "Accept: application/json"

knowledge graph

curl -X POST -k "http://localhost:5000/knowledge_graph" -H  "accept: application/json" -H  "Content-Type: application/json" -d '
{
        "query_options": {
            "table": "patient", 
            "year": 2010, 
            "cohort_features": {
                "AgeStudyStart": {
                    "operator": "=",
                    "value": "0-2"
                }
            }, 
            "feature": {
                "EstResidentialDensity": {
                    "operator": "<",
                    "value": 1
                }
            }, 
            "maximum_p_value":1
        }, 
        "machine_question": {
            "nodes": [
                {
                    "id": "n00",
                    "type": "population_of_individual_organisms"
                },
                {
                    "id": "n01",
                    "type": "chemical_substance"
                }   
            ], 
            "edges": [
                {
                    "id": "e00",
                    "type": "association",
                    "source_id": "n00",
                    "target_id": "n01"
                } 
            ]
        }
}
'

knowledge graph schema

curl -X GET -k "http://localhost:5000/knowledge_graph/schema" -H  "accept: application/json"