UCDP ID translation tables:
As part of the final rollout of the new UCDP Web Platform, API and System, all IDs for Actors/Sides
Dyads and Conflicts have been changed with version 17.1.
There were three main reasons for this:
1. Dyad and Conflict IDs were originating in three different systems and were clashing witheach other. It was possible (and indeed present in the data) that a “conflict 431” was astate-based conflict, a separate, non-connected and non-related non-state conflict inanother part of the world as well as an instance of one-sided violence.
This led to extreme difficulty in data storage and data management for both our users andour servers, preventing the rollout of UCDP features. This was especially visible when data
pertaining to multiple types of violence was used together (e.g. in UCDP GED).
2. Actor/Side IDs as well as One-Sided Violence instances were confounded with theGleditsch and Ward (GW) country codes; this made expansions of UCDP data in further
disaggregation of conflict actors.
Previous solutions, such as prepending the type of violence to the conflict/dyad ID proved
to be as bad (if not worse) than the original problem.
3. The old event IDs (called RelID) changed with the data, making the data unauditable byeither the user or by UCDP staff, reducing transparency and trace-ability.

The change is total – new IDs do not match in any way the old IDs.
IDs are now unique. For example, a non-state dyad can no longer have the same ID as astate-based dyad.

You should use these translation tables ONLY if:
1. you intend to use both old and new versions of UCDP data at the same time;
2. you intend to use UCDP dataset with other datasets that have not yet been updated
to the new UCDP standard (e.g. the 3.4 version of the Cunningham and Gleditsch
Non-State Actor Dataset).

We are providing three translation tables:
1. one for actors,
2. one for dyads,
3. one for conflicts

The following fields are available in each table:

Actor translation table:
1. new_id: The new UCDP Actor/side ID to be used in all datasets labeled with version
17.1 and onwards.
2. old_id: The old UCDP Actor ID in use in datasets released in 2016 and prior(UCDP/PRIO version v. 4, UCDP Dyadic 1, UCDP One-Sided Violence v. 1.4, UCDP Non-Statev. 2.5, UCDP Battle Related Deaths 5.0, UCDP Actor Dataset 2.2 etc.
3. name: The current name of the actor.

Dyad translation table:
1. new_id: The new UCDP Dyad ID to be used in all datasets labeled with version 17.1 andonwards.
2. old_id: The old UCDP State-Based Dyad ID, Non-State Dyad/Conflict ID and One-Sided
Actor/Dyad/Conflict ID in use in datasets released in 2016 and prior (UCDP/PRIO version
v. 4, UCDP Dyadic 1, UCDP One-Sided Violence v. 1.4, UCDP Non-State v. 2.5, UCDP Battle
Related Deaths 5.0, UCDP Actor Dataset 2.2 etc.
Does NOT include the prepended type of violence (e.g. 1-492 for old dyad ID 492). Thiswas done inconsistently in the old versions of datasets. If you need the prepended
format, use this column together with the type of violence column below.
As stated above, old_id DOES NOT match 1:1 with new_id. Old_id and type_of_violence
taken together DO match 1:1 with new_id.
3. name: The current name of the dyad.
4. type_of_violence : The type of violence of the dyad

State-Based Conflict translation table:

ONLY valid for state-based conflicts.
For non-state conflicts, the dyad_id and conflict_id were identical in the oldschema (and are not in the new schema); use the dyad translation table andmatch with the new Dyad ID not, the Conflict ID.
1. new_id: The new UCDP State-Based Conflict ID to be used in all datasets labeled withversion 17.1 and onwards.
2. old_id: The old UCDP State-Based Conflict ID in use in datasets released in 2016 andprior (UCDP/PRIO version v. 4, UCDP Dyadic 1, UCDP One-Sided Violence v. 1.4, UCDP NonState v. 2.5, UCDP Battle Related Deaths 5.0, UCDP Actor Dataset 2.2 etc.
Does NOT include the prepended type of violence (e.g. 1-492 for old conflict ID 492). Thiswas done inconsistently in the old versions of datasets. If you need the prepended
format, use this column together with the type of violence column below.

The translation tables are supplied as CSV files.
Note that the lists will contain more entries than those currently active in the current versions ofthe datasets. This accounts for groups and dyads that may be present in either other UCDP
products or older UCDP datasets.