orbis-eval 2.2

An Extendable Evaluation Pipeline for Named Entity Drill-Down Analysis

Orbis quickstart

Orbis is a versatile framework for performing NEL evaluation analyses. It supports standard metrics such as precision, recall and F1-score and visualizes gold standard and annotator results in the context of the annotated document. Color coding the entities allows experts to quickly identify correct and incorrect annotations and the corresponding links to the KB that are also provided by Orbis. Due to the modular pipeline architecture used by Orbis different stages in the evaluation process can be easily modified, replaced or added.

Results of our first Orbis based drill-down analyses efforts were presented at the SEMANTiCS 2018 Conference in Vienna Odoni, Kuntschik, Braşoveanu, & Weichselbraun, 2018.

Prerequisites

To be able to develop and run Orbis you will need the following installed and configured on your system:

• Python 3.7
• Python Setup Tools
• A Linux or Mac OS (Windows is untested)

Install

To use Orbis, download and install it from PyPI:

    $ python3 -m pip install -U orbis-eval['all'] --user

There are more extras options available but we recommend you use the all option. Only use the other options if you really know what you are doing.

    - all: Install all extras for Orbis. Recommended option
    - all_plugins: Install only all plugins for Orbis.
    - all_addons: Install only all addons for Orbis.
    - aggregation: Install only all aggregation plugins for Orbis.
    - evaluation: Install only all evaluation plugins for Orbis.
    - metrics: Install only all metrics plugins for Orbis.
    - scoring: Install only all scoring plugins for Orbis.
    - storage: Install only all storage plugins for Orbis.
    - "plugin or addon name": Install only the specified addon or plugin named.

Alternatively Orbis can be install by cloning the Repo and installing it manually. Plugins and addons must be installed seperatly.

    $ git clone https://github.com/orbis-eval/Orbis.git
    $ cd Orbis
    $ python3 setup.py install --user
    # or
    $ python setup.py install --user

Depending on your system and if you have Python 2 and Python 3 installed you either need to use python3 (like on Ubuntu) or maybe just python.

You will promted to set an orbis user folder. This folder will contain the evaluation run queue, the logs, the corpora and monocle data, the output and the documentation. Default location will be orbis-eval in the user's home folder. An alternative location can be specified.

Run

After installation Orbis can be executed by running orbis-eval. The Orbis help can be be called by using -h (orbis-eval -h) Before you can run an evaluation, please install a corpus using the repoman addon orbis-addons .

Configure evaluation runs

Orbis uses yaml files to configure the evaluation runs. These config file are located in the queue folder in the Orbis root directory Orbis/queue. Executing Orbis in test mode will run the yaml configs located in the test folder within the queue folder. These test configs are short evaluation runs for different annotators (AIDA, Babelfly, Recognyze and Spotlight).

A YAML configuration file is divided into the seperate stages of the pipeline:

  aggregation:
    service:
      name: aida
      location: web
    input:
      data_set:
        name: rss1
      lenses:
        - 3.5-entity_list_en.txt-14dec-0130pm
      mappings:
        - redirects-v2.json-15dec-1121am
      filters:
        - us_states_list_en-txt-12_jan_28-0913am

  evaluation:
    name: binary_classification_evaluation

  scoring:
    name: nel_scorer
    condition: overlap
    entities:
      - Person
      - Organization
      - Place
    ignore_empty: False

  metrics:
    name: binary_classification_metrics

  storage:
    - cache_webservice_results

Aggregation

The aggregation stage of orbis collects all the data needed for an evaluation run. This includes corpus, quering the annotator and mappings, lenses and filters used by monocle. The aggregation settings specify what service, dataset and what lenses, mappings and filters should be used.

    aggregation:
      service:
        name: aida
        location: web
      input:
        data_set:
          name: rss1
        lenses:
          - 3.5-entity_list_en.txt-14dec-0130pm
        mappings:
          - redirects-v2.json-15dec-1121am
        filters:
          - us_states_list_en-txt-12_jan_28-0913am

The service section of the yaml config specifies the name of the web service (annotation service). This should be the same (written the same) as the webservice plugin minus the orbis_plugin_aggregation_ prefix.

Location specifies where the annotations should come from. If it's set to web, then the aggregation plugin will attemt to query the webservice. If location is set to local, then the local cache (located in ~/orbis-eval/data/corpora/{corpus_name}/copmuted/{annotator_name}/) will be used assuming there is a cache to be used. If there is no cache, run the evaluation in web mode and add - cache_webservice_results to the storage section to build a cache.

    aggregation:
      service:
        name: aida
        location: web

The input section defines what corpus should be used (in the example rss1). The corpora name should be written the same as the corpus folder located in ~/orbis-eval/data/corpora/. Orbis will locate from there on automatically the corpus texts and the gold standard.

    input:
      data_set:
        name: rss1
      lenses:
        - 3.5 -entity_list_en.txt-14dec-0130pm
      mappings:
        - redirects-v2.json-15dec-1121am
      filters:
        - us_states_list_en-txt-12_jan_28-0913am

If needed, the lenses, mappings and filters can also be specified in the input section. These should be located in ~/orbis-eval/data/[filters|lenses|mappings] and should be specified in the section without the file ending.

Evaluation

The evaluator stage evaluates the the annotator results against the gold standard. The evaluation section defines what kind of evaluation should be used. The evaluator should have the same name as the evaluation plugin minus the orbis_plugin_evaluation_ prefix.

    evaluation:
      name: binary_classification_evaluation

Scoring

The scoring stage scores the evaluation according to specified conditions. These conditions are preset in the scorer and can be specified in the scoring section as well as what entity types should be scored. If no entity type is defined, all are scored. If one or more entity types are defined, then only those will be scored. Additionally ignore_empty can be set to define if the scorer should ignore empty annotation results or not. The scorer should have the same name as the scoring plugin minus the orbis_plugin_scoring_ prefix.

    scoring:
      name: nel_scorer
      condition: overlap
      entities:
        - Person
        - Organization
        - Place
      ignore_empty: False

Currently available conditions are:

  - simple:
    - same url
    - same entity type
    - same surface form

  - strict:
    - same url
    - same entity type
    - same surface form
    - same start
    - same end

  - overlap:
    - same url
    - same entity type
    - overlap

Metrics

The metrics stage calculates the metrics to analyze the evaluation. The metric should have the same name as the metrics plugin minus the orbis_plugin_metrics_ prefix.

    metrics:
      name: binary_classification_metrics

Storage

The storage stage defines what kind of output orbis should create. As allways, the storage should have the same name as the storage plugin minus the orbis_plugin_storage_ prefix.

    storage:
      - cache_webservice_results
      - csv_result_list
      - html_pages

Multiple storage options can be chosen and the ones in the example above are the recomended (at the moment working) possibilities.

Test run

Running orbis-eval -t will run the test files located in ~/orbis-eval/queue/tests. It is possible to just take one of these YAML files and modify them to your own needs.

OrbisAddons

To run an Orbis addon Orbis provides a CLI that can be accessed by running orbis-addons or orbis-eval --run-addon. The menu will guide you to the addons and the addons mostly provide an own menu.

Orbis addons can be called directly by appending the Addon name the orbis-addon command: orbis-addon repoman