Welcome to PLOVER
PLOVER—Political Language Ontology for Verifiable Event Records—is a next generation political event coding
system under development by the Open Event Data Alliance (http://openeventdata.org/) which is intended to replace the earlier
CAMEO system. The major features of PLOVER include:
- A set of standardized names ("fields") for JSON (http://www.json.org/) records are
specified for both the core event data fields and for extended information such as geolocation and extracted texts. Most of these
fields are optional but standardized field names will allow for the development of common utilities, which cannot
be done with the current proliferation of incompatible CSV and tab-delimited formats.
- Only the 2-digit event 'cue categories' have been retained from CAMEO: our hope is that these are sufficiently
broad and distinct that it will be possible to achieve a reasonably high level of human inter-coder agreement—
hence "verifiable"—on the coding
categories, and that can be consistently implemented, across all categories, in automated systems. These are defined in
much greater detail than they were in WEIS and CAMEO.
- The WEIS/CAMEO YIELD category has been split into verbal (CONCEDE) and material (RETREAT) components.
- The CAMEO 01 and 02 categories dealing with comments have been eliminated.
- A new category has been added for criminal behavior.
- A "context" field is available, along with standard values, to handle contexts such as disease, natural disaster,
elections, parliamentary processes and cyber-security.
- The complexity of substate actor codes has been limited, and the allowable substate modifiers have been substantially simplified.
- Standard optional fields have been defined for some categories, and the "target" is optional in some categories.
- In the near future, we are hoping to make available a large corpus of "gold standard records" for validation purposes:
these will include Spanish and Arabic cases as well as English.
The release documentation includes the English-language gold standard records from the CAMEO manual.
- The PLOVER documentation is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
PLOVER is currently under development but we anticipate the release of documentation before the end of 2016. Watch this
space and https://github.com/openeventdata/PLOVER for further developments.
(Charadriidae) are a globally-distributed family of short-billed gregarious wading birds who spend their lives
frantically poking through endless stretches of sand and muck trying to find something of interest.
It is difficult to imagine a better analogy to the process of coding event data.
Copyright © 2016, Open Event Data Alliance
Last update: 21 October 2016