Struct TextStatistics 

pub struct TextStatistics { /* private fields */ }

Text statistics calculator for readability metrics and text complexity analysis.

Implementations

impl TextStatistics

pub fn new() -> Self

Create a new TextStatistics analyzer with default tokenizers

pub fn with_tokenizers( wordtokenizer: WordTokenizer, sentencetokenizer: SentenceTokenizer, ) -> Self

Create a TextStatistics analyzer with custom tokenizers

pub fn word_count(&self, text: &str) -> Result<usize>

Count the number of words in text

pub fn sentence_count(&self, text: &str) -> Result<usize>

Count the number of sentences in text

pub fn syllable_count(&self, text: &str) -> Result<usize>

Count total syllables in text

pub fn complex_word_count(&self, text: &str) -> Result<usize>

Count the number of complex words (words with 3+ syllables)

pub fn avg_sentence_length(&self, text: &str) -> Result<f64>

Calculate average sentence length in words

pub fn avg_word_length(&self, text: &str) -> Result<f64>

Calculate average word length in characters

pub fn avg_syllables_per_word(&self, text: &str) -> Result<f64>

Calculate average syllables per word

pub fn flesch_reading_ease(&self, text: &str) -> Result<f64>

Calculate Flesch Reading Ease score

Score interpretation:

• 90-100: Very easy to read. 5th grade level.
• 80-89: Easy to read. 6th grade level.
• 70-79: Fairly easy to read. 7th grade level.
• 60-69: Standard. 8th-9th grade level.
• 50-59: Fairly difficult. 10th-12th grade level.
• 30-49: Difficult. College level.
• 0-29: Very difficult. College graduate level.

pub fn flesch_kincaid_grade_level(&self, text: &str) -> Result<f64>

Calculate Flesch-Kincaid Grade Level

Returns the U.S. school grade level needed to understand the text

pub fn gunning_fog(&self, text: &str) -> Result<f64>

Calculate Gunning Fog Index

The Gunning Fog Index estimates the years of formal education a person needs to understand the text on first reading

pub fn smog_index(&self, text: &str) -> Result<f64>

Calculate SMOG Index (Simple Measure of Gobbledygook)

SMOG estimates the years of education needed to understand a piece of writing. Typically used for health messages.

pub fn automated_readability_index(&self, text: &str) -> Result<f64>

Calculate Automated Readability Index (ARI)

Returns the U.S. grade level needed to comprehend the text

pub fn coleman_liau_index(&self, text: &str) -> Result<f64>

Calculate Coleman-Liau Index

Returns the U.S. grade level needed to comprehend the text

pub fn dale_chall_readability(&self, text: &str) -> Result<f64>

Calculate Dale-Chall Readability Score

This is a more accurate readability formula, but requires a list of common words, which we approximate here

pub fn lexical_diversity(&self, text: &str) -> Result<f64>

Calculate lexical diversity (unique words / total words)

pub fn type_token_ratio(&self, text: &str) -> Result<f64>

Calculate type-token ratio (synonym for lexical diversity)

pub fn get_all_metrics(&self, text: &str) -> Result<ReadabilityMetrics>

Get all readability metrics in a single call

Trait Implementations

impl Clone for TextStatistics

fn clone(&self) -> TextStatistics

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TextStatistics

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TextStatistics

fn default() -> Self

Returns the “default value” for a type.