Datasets:

mazri24
/

ifc_ner_dataset

tokens listlengths 5 256	bio listlengths 5 256
[ "Does", "the", "beam", "have", "the", "property", "reference" ]	[ "O", "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "wall", "standard", "case", "has", "the", "property", "classification", "description" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY" ]
[ "Does", "the", "wall", "standard", "case", "have", "the", "property", "category" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "What", "material", "is", "the", "door", "made", "of", "door", "", "panel" ]	[ "O", "O", "O", "O", "B-IFC_ENTITY", "B-RELATION", "I-RELATION", "B-MATERIAL", "I-MATERIAL", "I-MATERIAL" ]
[ "Does", "the", "furnishing", "element", "have", "the", "property", "area" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "What", "material", "is", "the", "building", "element", "proxy", "made", "of", "kyl/frys", "dörr", "vit" ]	[ "O", "O", "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "I-RELATION", "B-MATERIAL", "I-MATERIAL", "I-MATERIAL" ]
[ "The", "window", "is", "made", "of", "rubber", "black" ]	[ "O", "B-IFC_ENTITY", "O", "B-RELATION", "I-RELATION", "B-MATERIAL", "I-MATERIAL" ]
[ "The", "property", "family", "and", "type", "belongs", "to", "the", "window" ]	[ "O", "O", "B-PROPERTY", "I-PROPERTY", "I-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "property", "volume", "belongs", "to", "the", "building", "element", "proxy" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "wall", "standard", "case", "has", "the", "property", "room", "bounding" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY" ]
[ "The", "reinforcing", "bar", "is", "part", "of", "the", "building" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "I-RELATION", "I-RELATION", "O", "O" ]
[ "The", "building", "element", "proxy", "is", "made", "of", "handtag", "vitt" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "O", "B-RELATION", "I-RELATION", "B-MATERIAL", "I-MATERIAL" ]
[ "The", "furnishing", "element", "has", "the", "property", "family" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "Does", "the", "building", "element", "proxy", "have", "the", "property", "category" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "reinforcing", "bar", "belongs", "to", "the", "site" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "Does", "the", "wall", "standard", "case", "have", "the", "property", "structural", "usage" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY" ]
[ "The", "window", "has", "the", "property", "sill", "height" ]	[ "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY" ]
[ "The", "property", "type", "id", "belongs", "to", "the", "building", "element", "proxy" ]	[ "O", "O", "B-PROPERTY", "I-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "property", "head", "height", "belongs", "to", "the", "window" ]	[ "O", "O", "B-PROPERTY", "I-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "property", "host", "id", "belongs", "to", "the", "window" ]	[ "O", "O", "B-PROPERTY", "I-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "property", "thermaltransmittance", "belongs", "to", "the", "wall" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "wall", "standard", "case", "has", "the", "property", "firerating" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "A", "beam", "belongs", "to", "the", "building" ]	[ "O", "B-IFC_ENTITY", "B-RELATION", "I-RELATION", "O", "O" ]
[ "The", "door", "has", "the", "property", "mark" ]	[ "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "property", "head", "height", "belongs", "to", "the", "window" ]	[ "O", "O", "B-PROPERTY", "I-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "reinforcing", "bar", "belongs", "to", "the", "site" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "window", "has", "the", "property", "head", "height" ]	[ "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY" ]
[ "Does", "the", "wall", "standard", "case", "have", "the", "property", "location", "line" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY" ]
[ "Does", "the", "wall", "standard", "case", "have", "the", "property", "reference" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "Does", "the", "wall", "standard", "case", "have", "the", "property", "loadbearing" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "Does", "the", "beam", "have", "the", "property", "reference" ]	[ "O", "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "Does", "the", "furnishing", "element", "have", "the", "property", "reference" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "Does", "the", "wall", "standard", "case", "have", "the", "property", "base", "offset" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY" ]
[ "The", "property", "reference", "belongs", "to", "the", "building", "element", "proxy" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "Does", "the", "window", "have", "the", "property", "bo_glazing", "bars", "visibility" ]	[ "O", "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY", "I-PROPERTY" ]
[ "The", "furnishing", "element", "has", "the", "property", "statusconstruction" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "reinforcing", "bar", "belongs", "to", "the", "site" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "property", "statusconstruction", "belongs", "to", "the", "window" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "property", "reference", "belongs", "to", "the", "beam" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "Does", "the", "wall", "standard", "case", "have", "the", "property", "top", "extension", "distance" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY", "I-PROPERTY" ]
[ "The", "property", "typemark", "belongs", "to", "the", "window" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "A", "reinforcing", "bar", "belongs", "to", "the", "building" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "I-RELATION", "O", "O" ]
[ "The", "building", "element", "proxy", "has", "the", "property", "reference" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "furnishing", "element", "has", "the", "property", "warrantystartdate" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "property", "top", "is", "attached", "belongs", "to", "the", "wall", "standard", "case" ]	[ "O", "O", "B-PROPERTY", "I-PROPERTY", "I-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "door", "has", "the", "property", "storeyname" ]	[ "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "property", "width", "belongs", "to", "the", "window" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "furnishing", "element", "is", "part", "of", "the", "building" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "I-RELATION", "I-RELATION", "O", "O" ]
[ "The", "window", "has", "the", "property", "isexternal" ]	[ "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "furnishing", "element", "is", "part", "of", "the", "building" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "I-RELATION", "I-RELATION", "O", "O" ]
[ "The", "furnishing", "element", "has", "the", "property", "volume" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "Does", "the", "door", "have", "the", "property", "warrantyguarantorlabor" ]	[ "O", "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "property", "statusconstruction", "belongs", "to", "the", "building", "element", "proxy" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "property", "warrantyguarantorparts", "belongs", "to", "the", "door" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "property", "height", "belongs", "to", "the", "furnishing", "element" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "property", "family", "and", "type", "belongs", "to", "the", "window" ]	[ "O", "O", "B-PROPERTY", "I-PROPERTY", "I-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "wall", "standard", "case", "has", "the", "property", "top", "extension", "distance" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY", "I-PROPERTY" ]
[ "The", "reinforcing", "bar", "has", "the", "property", "reference" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "Does", "the", "wall", "standard", "case", "have", "the", "property", "base", "constraint" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY" ]
[ "The", "property", "slope", "belongs", "to", "the", "beam" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "property", "statusconstruction", "belongs", "to", "the", "wall", "standard", "case" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "property", "typedescription", "belongs", "to", "the", "wall", "standard", "case" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "furnishing", "element", "has", "the", "property", "netarea" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "reinforcing", "bar", "has", "the", "property", "reference" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "Is", "the", "reinforcing", "bar", "part", "of", "the", "building" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "I-RELATION", "O", "O" ]
[ "white", "ral", "9010", "is", "used", "in", "the", "window" ]	[ "B-MATERIAL", "I-MATERIAL", "I-MATERIAL", "O", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "Does", "the", "member", "have", "the", "property", "reference" ]	[ "O", "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "furnishing", "element", "has", "the", "property", "level" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "property", "reference", "belongs", "to", "the", "wall", "standard", "case" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "furnishing", "element", "has", "the", "property", "type" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "property", "reference", "belongs", "to", "the", "furnishing", "element" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "railing", "has", "the", "property", "family", "name" ]	[ "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY" ]
[ "Does", "the", "railing", "have", "the", "property", "family", "and", "type" ]	[ "O", "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY", "I-PROPERTY" ]
[ "The", "wall", "standard", "case", "has", "the", "property", "family" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "property", "keynote", "belongs", "to", "the", "door" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "reinforcing", "bar", "has", "the", "properties", "reference", "and", "reference" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "O", "O" ]
[ "The", "property", "trim", "projection", "int", "belongs", "to", "the", "door" ]	[ "O", "O", "B-PROPERTY", "I-PROPERTY", "I-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "reinforcing", "bar", "has", "the", "properties", "reference", "and", "reference" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "O", "O" ]
[ "The", "building", "includes", "the", "opening", "element" ]	[ "O", "O", "B-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "property", "category", "belongs", "to", "the", "furnishing", "element" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "reinforcing", "bar", "is", "contained", "in", "the", "site", "named", "Default" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "O", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "O", "O" ]
[ "The", "reinforcing", "bar", "is", "part", "of", "the", "building" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "I-RELATION", "I-RELATION", "O", "O" ]
[ "The", "column", "is", "contained", "in", "the", "site", "named", "Default" ]	[ "O", "B-IFC_ENTITY", "O", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "O", "O" ]
[ "glass", "is", "used", "in", "the", "window" ]	[ "B-MATERIAL", "O", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "Does", "the", "reinforcing", "bar", "have", "the", "property", "reference" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "building", "element", "proxy", "has", "the", "property", "reference" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "Does", "the", "window", "have", "the", "property", "typemark" ]	[ "O", "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "building", "element", "proxy", "has", "the", "property", "isexternal" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "property", "mark", "belongs", "to", "the", "window" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "property", "type", "id", "belongs", "to", "the", "furnishing", "element" ]	[ "O", "O", "B-PROPERTY", "I-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "property", "type", "id", "belongs", "to", "the", "door" ]	[ "O", "O", "B-PROPERTY", "I-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "furnishing", "element", "has", "the", "property", "type", "id" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY", "I-PROPERTY" ]
[ "glass", "is", "used", "in", "the", "window" ]	[ "B-MATERIAL", "O", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "property", "slope", "belongs", "to", "the", "beam" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY" ]
[ "The", "property", "accessibilityperformance", "belongs", "to", "the", "furnishing", "element" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "reinforcing", "bar", "has", "the", "property", "reference" ]	[ "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "Does", "the", "furnishing", "element", "have", "the", "property", "warrantyguarantorlabor" ]	[ "O", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "building", "includes", "the", "wall", "standard", "case" ]	[ "O", "O", "B-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY" ]
[ "The", "beam", "has", "the", "property", "isexternal" ]	[ "O", "B-IFC_ENTITY", "B-RELATION", "O", "O", "B-PROPERTY" ]
[ "The", "property", "reference", "belongs", "to", "the", "wall", "standard", "case" ]	[ "O", "O", "B-PROPERTY", "B-RELATION", "I-RELATION", "O", "B-IFC_ENTITY", "I-IFC_ENTITY", "I-IFC_ENTITY" ]

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IFC NER Dataset

A synthetic Natural Language Processing (NLP) dataset for Named Entity Recognition (NER) in the Architecture, Engineering, and Construction (AEC) domain, generated from Industry Foundation Classes (IFC) models.

This dataset enables training models to extract structured BIM information from natural language sentences.

⸻

📌 Overview

The dataset consists of automatically generated sentences derived from IFC files.

Each sentence is:

Tokenized
Labeled using the BIO tagging scheme

The dataset supports extraction of:

IFC entities (e.g., IfcWall, IfcDoor)
Relations (e.g., has, contains, part_of)
Properties (e.g., Height, FireRating)
Materials
Property values

⸻

📂 Dataset Structure

The dataset follows the Hugging Face DatasetDict format:

train
validation
test

Each example looks like:

{
  "tokens": ["The", "wall", "has", "height", "3.0", "meters"],
  "bio": ["O", "B-IFC_ENTITY", "B-RELATION", "B-PROPERTY", "O", "O"]
}

Where:

tokens: Tokenized sentence
bio: BIO-formatted NER tags aligned with tokens

BIO Tag meaning:

B-XXX → Beginning of entity type
I-XXX → Inside entity type
O → Outside any entity

⸻

🏗 Data Generation

Sentences are programmatically generated from real IFC models.

The generation includes:

Entity mention templates
Property description templates
Relationship-based sentences
Passive voice variants
Question-style sentences
Multi-property sentences

This provides structured consistency with real BIM data while introducing controlled linguistic variation.

⸻

🎯 Intended Use

This dataset is suitable for:

Token classification (NER)
Domain adaptation for AEC NLP models
Text → structured BIM workflows
Text → IDS generation pipelines
BIM-aware information extraction systems

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📊 Scale

Generated from IFC models
300k+ labeled sentences
BIO token-level annotation

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⚠️ Limitations

Sentences are synthetically generated.
Linguistic diversity depends on template variety.
Does not cover the full IFC schema.
Distribution reflects the source IFC models used.

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Size of downloaded dataset files:

4.54 MB

Size of the auto-converted Parquet files:

4.54 MB

Number of rows:

310,418