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Graphene

Coreference Resolution, Simplification and Open Relation Extraction Pipeline

RDFNL Format

The RDFNL format was designed to act as an easy representation, which is able to cover complex contextual relations, keeping the simplicity to be parsed and further processed by programs. The RDFNL format can be printed in the following ways:

Default-Format

# The café arrived in Paris in the 17th century , when the beverage was first brought from Turkey , and by the 18th century Parisian cafés were centres of the city 's political and cultural life .
 
3469c5159933484a8bbdb5b1df36136f    0   The café    arrived in Paris in the 17th century
    ELEM-BACKGROUND fcbcb5c547f248cc88f8aa3033178d12
 
fcbcb5c547f248cc88f8aa3033178d12    1   The beverage    was first brought   
    VCON-SPATIAL    from Turkey .
 
394d55aacc064bcc82912689dc0500b9    0   Parisian cafés  were    centres of the city 's political and cultural life
    VCON-TEMPORAL   by the 18th century .

In the Default-Format, extractions are grouped by sentences in which they occur and represented by tab-separated values for the identifier, the context_layer, as well as subject, predicate and object.

The numerical context_layer value determines the layer of contextual assignment. Extractions with a context-layer = 0 provide core-information of the input sentence while those with context-layer > 0 provide contextual information about extractions with context-layer - 1.

Contextual dependencies are indicated by an extra indentation level to their parent extractions, followed by a type_string.

The type_string encodes both context_class:

and the classified rhetorical_relation (e.g. CAUSE, ENABLEMENT, LOCATION) separated by a - character.

After the type_string, there follow tab-separated values for:

Flat-Format

# The café arrived in Paris in the 17th century , when the beverage was first brought from Turkey , and by the 18th century Parisian cafés were centres of the city 's political and cultural life .
 
3469c5159933484a8bbdb5b1df36136f    0   The café    arrived in Paris in the 17th century    ELEM-BACKGROUND(fcbcb5c547f248cc88f8aa3033178d12)
fcbcb5c547f248cc88f8aa3033178d12    1   The beverage    was first brought       VCON-SPATIAL(from Turkey .)
394d55aacc064bcc82912689dc0500b9    0   Parisian cafés  were    centres of the city 's political and cultural life  VCON-TEMPORAL(by the 18th century .)

In the Flat-Format, each extraction is shown in one line. Contextual dependencies are appended at the end of the identifier, the context_layer, subject, predicate and object, all separated by tabs. The contexts are represented by the type_string that is encoded just like in the Default-Format and their content in round brackets.

Expanded-Format

# The café arrived in Paris in the 17th century , when the beverage was first brought from Turkey , and by the 18th century Parisian cafés were centres of the city 's political and cultural life .
 
0   The café    arrived in Paris in the 17th century
    ELEM-BACKGROUND The beverage    was first brought   
        VCON-SPATIAL    from Turkey .
 
1   The beverage    was first brought   
    VCON-SPATIAL    from Turkey .
 
0   Parisian cafés  were    centres of the city 's political and cultural life
    VCON-TEMPORAL   by the 18th century .

The Expanded-Format is like the Default-Format but without identifiers. Thereby, references to contextual extractions are resolved and represented as a nested hierarchy by their indentations.

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