dict_expand {PsychWordVec}

Expand a dictionary from the most similar words.

Description

Expand a dictionary from the most similar words.

Usage

dict_expand(data, words, threshold = 0.5, iteration = 5, verbose = TRUE)

Arguments

data

A wordvec (data.table) or embed (matrix), see data_wordvec_load.

words

A single word or a list of words, used to calculate the sum vector.

threshold

Threshold of cosine similarity, used to find all words with similarities higher than this value. Defaults to 0.5. A low threshold may lead to failure of convergence.

iteration

Number of maximum iterations. Defaults to 5.

verbose

Print information to the console? Defaults to TRUE.

Value

An expanded list (character vector) of words.

Download

Download pre-trained word vectors data (.RData): https://psychbruce.github.io/WordVector_RData.pdf

See Also

sum_wordvec

most_similar

dict_reliability

Examples

dict = dict_expand(demodata, "king")
dict

dict = dict_expand(demodata, cc("king, queen"))
dict

most_similar(demodata, dict)

dict.cn = dict_expand(demodata, "China")
dict.cn  # too inclusive if setting threshold = 0.5

dict.cn = dict_expand(demodata,
                      cc("China, Chinese"),
                      threshold=0.6)
dict.cn  # adequate to represent "China"