Entity extraction needs to address different types of challenges due to the flexibility and ambiguity that characterizes human languages:
- Creativity: Humans are constantly creating new words and names for companies, products, and even personal and place names.
- Entity Type Ambiguity: The same name may refer to entities of different types depending on context.
- Part of Speech Ambiguity: The same word may have multiple grammatical functions depending on context. For instance, “may” can be a first name (May Stevens), a last name (Tom May), a month (May), and an auxiliary (may happen).
- Semantic Ambiguity: The same word may have different meanings that result in an ambiguous context for Entity Extraction. For example, the noun “operator” could denote a person (crane operator Chris Johnson), organization (tour operator XYZ Adventure), or a function in programming (logical operator XOR).
- Noisy Text: Unlike well-edited texts such as newspaper articles, informal language, which is common in social media, email, and texting, often contains typos and misspellings, lacks proper capitalization and punctuation, and may not be grammatical. Also, sources like OCR and ASR output frequently contain errors.
NetOwl entity extraction addresses these entity extraction challenges with high accuracy, speed, and scalability.
