# wfl2spc: construct frequency spectrum from word frequency list

`wfl2spc -e -m text.txt`

This program takes a word frequency list as input and outputs the frequency spectrum.

input

`text.wfl:` a word frequency list with columns labeled Word and Frequency

options

`-e:` input does not have .wfl extension

`-m:` input does not have a header

output

`text.sum:` summary statistics:

N: N (number of tokens)

K: K (Yule's charactistic constant)

D: D (Simpson's diversity index)

V: V (number of types)

V1: V(1,N) (number of hapax legomena)

V2: V(2,N) (number of dis legomena)

V3: V(3,N) (number of tris legomena)

V4: V(4,N) (number of types with frequency 4)

V5: V(5,N) (number of types with frequency 5)

R: R (Guiraud's constant)

W: W (Brunet's constant)

S: S (Sichel's constant)

H: H (Honore's constant)

C: C (Herdan's constant)

E: E (sample entropy)

lM: mu (mean log frequency)

lSt: sigma (standard deviation of log frequency)

b: b (parameter of Sichel's model)

c: c (parameter of Sichel's model)

a1: alpha(1,N) (relative number of hapax legomena)

Z: Z (parameter of extended Zipf's law)

fa: not implemented (available in the input file)

fthe: not implemented (available in the input file)

sLmean: sample mean of lognormal model

sLstdev: sample standard deviation of lognormal model

`text.spc:` the frequency spectrum

m: the frequency rank m

Vm: V(m,N), the number of words with frequency m

technical details

The maximum number of different word types that can be accomodated is 40000.

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