The below table lists the different features in BlaBla. In the table, we provide the following columns of information for all the features:
- feature name - The name of the feature
- feature description - A short description on what the feature means
- feature key - The key that you need in the
compute_featuresmethod - core (# langs) - The base framework that BlaBla uses (Stanza / CoreNLP) for feature extraction
- requires Stanza - (Yes/No) depending on whether this features requires Stanza
- requires CoreNLP - (Yes/No) depending on whether this features requires CoreNLP
- input format - The actual format of the input supported. It is either String (free text) or JSON
- default param name - Few of the features allow the user to override a default value such as
pause_durationbetween words. This columns tells you the additional key you can provide in thecompute_featuresmethod for the feature - default param value - This is the default value taken for the parameter relevant to the feature
| feature name | feature description | feature key | core (#langs) | requires Stanza | requires CoreNLP | input format | default param name | default param value |
|---|---|---|---|---|---|---|---|---|
| number of pauses | The total number of pauses between words greater than a threshold | num_pauses | Stanza(66) | No | No | JSON | pause_duration | 0.35 |
| total pause time | The total duration of pauses between words greater than a threshold | total_pause_time | Stanza(66) | No | No | JSON | pause_duration | 0.35 |
| mean pause duration | The average duration of all pauses between words greater than a threshold | mean_pause_duration | Stanza(66) | No | No | JSON | pause_duration | 0.35 |
| between utterance pause duration | The proportion of total druation of pauses that are between utterances | between_utterance_pause_duration | Stanza(66) | No | No | JSON | pause_between_utterance_duration | 0.035 |
| hesitation ratio | The average gap between sentences | hesitation_ratio | Stanza(66) | No | No | JSON | pause_duration_for_hesitation | 0.030 |
| speech rate | The number of words per minute | speech_rate | Stanza(66) | No | No | JSON | - | - |
| maximum speech rate | The average number of words per minute across the top N (set to 10 by default) rapid sentences | maximum_speech_rate | Stanza(66) | No | No | JSON | num_rapid_sentences | 10 |
| total phonation time | Total time duration of all words across all sentences | total_phonation_time | Stanza(66) | No | No | JSON | - | - |
| standardized phonation time | The total number of words divided by the total phonation time | standardized_phonation_time | Stanza(66) | No | No | JSON | - | - |
| total locution time | The total amount of time in speech that contains both speech and pauses | total_locution_time | Stanza(66) | No | No | JSON | - | - |
| noun rate | The rate of nouns across sentences | noun_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| verb rate | The rate of verbs across sentences | verb_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| demonstrative rate | The rate of demonstrative across sentences | demonstrative_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| adjective rate | The rate of adjectives across sentences | adjective_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| adposition rate | The rate of adpositions across sentences | adposition_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| adverb rate | The rate of adverbs across sentences | adverb_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| auxiliary rate | The rate of auxiliaries across sentences | auxiliary_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| conjunction rate | The rate of conjunctions across sentences | conjunction_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| determiner rate | The rate of determiners across sentences | determiner_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| interjection rate | The rate of interjections across sentences | interjection_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| numeral rate | The rate of numerals across sentences | numeral_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| particle rate | The rate of particles across sentences | particle_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| pronoun rate | The rate of pronouns across sentences | pronoun_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| proper noun rate | The rate of proper nouns across sentences | proper_noun_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| punctuation rate | The rate of punctuations across sentences | punctuation_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| subordinating conjunction rate | The rate of subordinating conjunctions across sentences | subordinating_conjunction_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| symbol rate | The rate of symbols across sentences | symbol_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| possessive rate | The rate of possessive words across sentences | possessive_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| noun verb Ratio | The ratio of nouns to verbs across sentences | noun_verb_ratio | Stanza(66) | Yes | No | String or JSON | - | - |
| noun ratio | The ratio of nouns to the sum of nouns and verbns across sentences | noun_ratio | Stanza(66) | Yes | No | String or JSON | - | - |
| pronoun noun ratio | The ratio of pronouns to nouns across sentences | pronoun_noun_ratio | Stanza(66) | Yes | No | String or JSON | - | - |
| closed-class word rate | The proportions of determiners, pronouns, conjunctions and prepositions to all words across sentences | closed_class_word_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| open-class word rate | The proportions of nouns, verbs, adjectives and adverbs to all words across sentences | open_class_word_rate | Stanza(66) | Yes | No | String or JSON | - | - |
| total dependency distance | The total distance of all dependencies across sentences | total_dependency_distance | Stanza(66) | Yes | No | String or JSON | - | - |
| average dependency distance | The average distance of all dependencies across sentences | average_dependency_distance | Stanza(66) | Yes | No | String or JSON | - | - |
| total dependencies | The total number of unique dependencies across sentences | total_dependencies | Stanza(66) | Yes | No | String or JSON | - | - |
| average dependencies | The average number of unique dependencies across sentences | average_dependencies | Stanza(66) | Yes | No | String or JSON | - | - |
| content density | The proportions of numebr of open class words to the numebr of close class words | content_density | Stanza(66) | Yes | No | String or JSON | - | - |
| idea density | he proportions of verbs, adjectives, adverbs, prepositions and conjucntions to all words across sentences | idea_density | Stanza(66) | Yes | No | String or JSON | - | - |
| honore's statistic | Calculated as R = (100*log(N))/(1-(V1)/(V)), where V is number of unique words, V1 is the number of words in the vocabulary only spoken once, and N is overall text length / number of words. | honore_statistic | Stanza(66) | Yes | No | String or JSON | - | - |
| brunet's index | Calculated as N^(V^(-0.165)), where V is number of unique words and N is overall text length / number of words. Measure of lexical richness. Text-length insensitive version of TTR. | brunet_index | Stanza(66) | Yes | No | String or JSON | - | - |
| type-token-ratio | The number of word types divided by the number of word tokens | type_token_ratio | Stanza(66) | Yes | No | String or JSON | - | - |
| word length | The mean length of words across the corpus | word_length | Stanza(66) | Yes | No | String or JSON | - | - |
| proportion of inflected verbs | The ratio of the number of inflected verbs to the number of verbs | prop_inflected_verbs | Stanza(66) | Yes | No | String or JSON | - | - |
| proportion of auxiliary verbs | The ratio of the number of auxiliary verbs to the number of verbs | prop_auxiliary_verbs | Stanza(66) | Yes | No | String or JSON | - | - |
| proportion of gerund verbs | The ratio of the number of gerund verbs to the number of verbs | prop_gerund_verbs | Stanza(66) | Yes | No | String or JSON | - | - |
| proportion of participles | The ratio of the number of particile verbs to the number of verbs | prop_participles | Stanza(66) | Yes | No | String or JSON | - | - |
| number of clauses | The number of clauses across the corpus | num_clauses | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| clause rate | The number of clauses per sentence across the corpus | clause_rate | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| number of dependent clauses | The number of Dependent Clauses | num_dependent_clauses | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| dependent clauses rate | The rate of Dependent Clauses | dependent_clause_rate | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| proportion of nouns with determiners | The proportion of nouns associated with a determiner | prop_nouns_with_det | Stanza(66) | Yes | No | String or JSON | - | - |
| proportion of nouns with adjectives | The proportion of nouns associated with a adjective | prop_nouns_with_adj | Stanza(66) | Yes | No | String or JSON | - | - |
| number of noun phrases | The number of Noun Phrases | num_noun_phrases | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| noun phrase rate | The rate of Noun Phrases | noun_phrase_rate | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| number of verb phrases | The number of Verb Phrases | num_verb_phrases | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| verb phrase rate | The rate of Noun Phrases | verb_phrase_rate | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| number of infinitive phrases | The number of Infinitive Phrases | num_infinitive_phrases | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| infinitive phrase rate | The rate of Infinitive Phrases | infinitive_phrase_rate | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| number of prepositional phrases | The number of Prepositional Phrases | num_prepositional_phrases | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| prepositional phrase rate | The rate of Infinitive Phrases | prepositional_phrase_rate | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| max yngve depth | The maximum Yngve Depth of each parse tree averaged over all sentences | max_yngve_depth | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| mean yngve depth | The mean Yngve Depth of all nodes in a parse tree averaged over all sentences | mean_yngve_depth | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| total yngve depth | The total Yngve Depth of all nodes in a parse tree averaged over all sentences | total_yngve_depth | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| parse tree height | The height of parse tree averaged over all sentences | parse_tree_height | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| number of discourse markers | The number of total discourse markers | num_discourse_markers | CoreNLP(6) | Yes | Yes | String or JSON | - | - |
| discourse marker rate | The rate discourse markers across all sentences | discourse_marker_rate | CoreNLP(6) | Yes | Yes | String or JSON | - | - |