Update README.md

README.md

@@ -18,6 +18,25 @@ pretty_name: Relation Mapping
 ### Dataset Summary
 Relation Mapping is a task to choose optimal combination of word pairs (see more detail in the [paper](https://www.jair.org/index.php/jair/article/view/10583)).
 
+
+Relation mapping `M` is the set of bijective map in between two sets of terms (`A` and `B`):
+```
+[set `A`]: ("solar system", "sun", "planet", "mass", "attracts", "revolves", "gravity")
+[set `B`]: ("atom", "nucleus", "electron", "charge", "attracts", "revolves", "electromagnetism")
+
+[Relation Mapping `M`]
+* "solar system"   -> "atom"
+* "sun"            -> "nucleus"
+* "planet"         -> "electron"
+* "mass"           -> "charge"
+* "attracts"       -> "attracts"
+* "revolves"       -> "revolves"
+* "gravity"        -> "electromagnetism"
+```
+
+***[Relation Mapping Problem](https://www.jair.org/index.php/jair/article/view/10583)*** is the task to identify the mapping `M` given the sets of terms `A` and `B`.
+
+
 ## Dataset Structure
 ### Data Instances
 An example looks as follows.
@@ -33,6 +52,14 @@ An example looks as follows.
 }
 ```
 
+- `source`: A list of terms, which is the source of the relation mapping from.
+- `target_random`: A list of terms, where we want to find a mapping from `source` to.
+- `target`: A correctly ordered `target_random` that aligns with the `source`.
+
+Given `source` and `target_random`, the task is to predict the correct order of `target_random` so that it matches `target`.
+In average 7 terms are in the set, so the total number of possible order is 5040.
+
+
 ### Data Splits
 |  name   |test|
 |---------|----:|