Phonographic Measures
=====================

Phonographic measures combine both the written and spoken forms of words. Jiwar calculates the following phonographic measures:

Phonographic N (pg_N)
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**Full Name:** Phonographic Neighborhood Size

**Description:** Number and forms of words that differ by one letter and one phoneme via substitution only.

**Output Columns:** 
 *  ``pg_N``: Number of phonographic neighbors which differ from the target word by one letter and one phoneme via substitution only.
 *  ``pg_N_nbrs``: A list of the forms of phonographic neighbors identified in 'pg_N'

Phonographic Density (pg_density)
---------------------------------
**Full Name:** Phonographic Neighborhood Density

**Description:** Number and forms of words which differ from the target word by one letter and one phoneme via substitution, addition, or deletion.

**Output Columns:** 
 *  ``pg_density``: Number of phonographic neighbors which differ from the target word by one letter and one phoneme via substitution, addition, or deletion
 *  ``pg_density_nbrs``: A list of the forms of phonographic neighbors identified in 'pg_density'

PGLD20
------
**Full Name:** Phonographic Levenshtein Distance-20

**Description:** Average combined orthographic and phonological Levenshtein distance of the 20 closest neighbors.

**Output Column:** ``PGLD20``

Phonographic Network
-----------------------
**Full Name:** Phonographic netowrk science measures

**Description:** Measures the interconnectedness of a word's phonographic neighborhood at the near and distant neighbor levels.

**Output Columns:**
 * ``pg_C``: The clustering coefficient C measures the degree to which a word's immediate phonographic neighbors are also phonographic neighbors of each other.
 * ``pg_2hop_density``: The 2-hop density measures the degree to which a word's immediate and distant phonographic neighbors are also phonographic neighbors of each other.

Phonographic Neighbor Frequency
-------------------------------
**Full Name:** Phonographic Neighborhood Frequency

**Description:** Statistics about the frequencies of phonographic neighboring words. In this measure, neighbors are defined as words differing by one letter and one phoneme via substitution, addition, or deletion.

**Output Columns:** 
 * ``pg_nbr_fpm_m``: The mean frequency per million (fpm) of phonographic neighbors.
 * ``pg_nbr_fpm_SD``: The standard deviation of the frequency per million (fpm) of phonographic neighbors.
 * ``pg_nbr_fpm_higher_m``: The mean frequency per million (fpm) of phonographic neighbors that have a higher frequency than the target word.
 * ``pg_nbr_fpm_lower_m``: The mean frequency per million (fpm) of phonographic neighbors that have a lower frequency than the target word.
 * ``pg_nbr_zipf_m``: The mean Zipf value of phonographic neighbors.
 * ``pg_nbr_zipf_SD``: The standard deviation of the Zipf values of phonographic neighbors.
 * ``pg_nbr_zipf_higher_m``: The mean Zipf value of phonographic neighbors that have a higher frequency than the target word.
 * ``pg_nbr_zipf_lower_m``: The mean Zipf value of phonographic neighbors that have a lower frequency than the target word.