split_compound_words

Use this repository to split the compound words in a textline into a collection of dictionary words.

for e.g.:

{‘breakingnews’: [(‘breaking’, ‘news’)]}

{‘steeringwheel’: [(‘steering’, ‘wheel’)]}

{‘therabbithole’: [(‘the’, ‘rabbit’, ‘hole’), (‘th’, ‘era’, ‘bb’, ‘it’, ‘hole’)]}

Dependencies

Dependencies are listed in requirements.txt. You can install all requirements using: pip install -r requirements.txt

If using spacy, download its model like this: python -m spacy download en_vectors_web_lg

How to use it

decompound.sentence_to_words(sentence: str, preferred_words: List[str]=[], translate:bool = False, use_common: bool = True,
                  top_limit: int = 0) -> dict
  
Use this function to tokenize sentences which have compound words.

Parameters:
----------
sentence: str
    input string to be tokenized

preferred_words: list
    list of preferred words, useful when some words are more likely to occur in input text, 
    e.g. 'together' can be 'to get her' combined. Giving 'together' in this list will make sure it doesn't split further
    If not using this, can remove spacy

translate: bool
    if giving non-english words as input, then translation is required

use_common: bool
    if true, returns only the combinations of words which are common in English, else returns all valid ones.

top_limit: int
    if 0, returns all found valid combinations else only top 'top_limit' number of combinations.

Returns:
--------
result: dict with key as word and value as possible combinations of words for that key
        e.g: 'sorttimetogether kid' => {'sorttimetogether': [('sort', 'time', 'together'),
                                        ('sort', 'time', 'to', 'get', 'her')], 'kid': ['kid']}               

Examples:

> To get all possible combinations of common English dictionary words forming the given word:

####

import decompound
decompound.sentence_to_words('sorttimetogether kid!')

output: {‘sorttimetogether’: [(‘sort’, ‘time’, ‘together’), (‘sort’, ‘time’, ‘to’, ‘get’, ‘her’)], ‘kid’: [‘kid’]}

> To get all possible combinations of all English Dictionary words forming the given word:

##### sentence_to_words(‘youaregreat’, use_common=False)

output: {‘youaregreat’: [(‘you’, ‘are’, ‘great’), (‘you’, ‘a’, ‘reg’, ‘re’, ‘at’)]}

> To get top 1 or n combination(s) of English dictionary words for the given word:

##### sentence_to_words(‘forgetthatpage’, top_limit=1)

all combinations: {‘forgetthatpage’: [(‘forget’, ‘that’, ‘page’), (‘for’, ‘get’, ‘that’, ‘page’)]}

output: {‘forgetthatpage’: [(‘forget’, ‘that’, ‘page’)]}

> If you have a list of preferred words e.g. high-frequency words in your data, can pass that in ‘‘preferred_words’ argument to get only those sets of combinations which have words from the given list, if possible.