Readability scores are used to estimate the ease of study of text, their complexity and categorization.
Text Complexity or readability scoring : Implementation and Analysis Readability scores are used to estimate the ease of study of text, their complexity and categorisation. There are six standard indexes: Flesch Reading Ease • Polysyllabic words have higher weight then in Flesch Kincaid Index. • The higher the value easier to read. • Score Notes 90.0–100.0: easily understood by an average 1 1 -year-old student 60.0–70.0 : easily understood by 1 3- to 1 5-year-old students 0.0–30.0: best understood by university graduates • "The cat sat on the mat.” Scores 116
Flesch Kincaid Index • Based on US grade level i.e. gives the years of formal education necessary to read the text • Syllable count is required. Hence can’t be easily implemented as optical scanners.
Coleman-Lieu index • Based on US grade level i.e. gives the years of formal education necessary to read the text • It relies on characters over syllables to judge the complexity of the text. • It is simpler to implement as the content of a word do not matter, only their character length. Hence, it can even be implemented with optical scanners • In comparison judges the text more quantitatively than qualitatively compared to other scores. Gunning Fog Index: • Considers frequency of polysyllabic words has higher weightage. • Has a minimum value of 0.4 SMOG Index: • Based on US grade level i.e. gives the years of formal education necessary to read the text. • Developed as a substitute for Gunning-Fog Index • It is based on the no. of sentences and polysyllabic words present in the text. • Has a minimum value of 3.1291 • Statistically valid only for text with more than 30 sentences.