query_eta: Query Eta

In activetext/activeR: a semi-supervised active learning algorithm for text classification.

Query Eta

Description

Actively query eta parameter.

Usage

query_eta(
  eta,
  class,
  n_query,
  handlabel = TRUE,
  true_eta = NA,
  keyword_select_scheme = "ratio",
  val_scheme = "ratio",
  verbose = FALSE,
  dfm,
  keywords_list = NA
)

Arguments

eta	Eta parameter from EM.
class	Class under consideration.
n_query	Number of words to query.
handlabel	Boolean indicating whether or not to label by hand.
true_eta	If handlabel is false and an eta matrix is provided to the true_eta param, values from the true_eta are used to determine whether or not a word should be flagged.
keyword_select_scheme	Keyword selection scheme. Either "ranked" for top eta keyword selection, "ratio" for top eta ratio keyword selection, or "combined" for log word count + log eta ratio selection.
val_scheme	If handlabel is TRUE and true_eta is provided, sets automated active updating scheme. Can be "ratio", in which case it decides based on the ratio of the true etas, or "ranked", in which case it decides based on the raw values of the true eta.
verbose	Boolean deciding whether to print for debug.
dfm	Quanteda document feature matrix.
keywords_list	Existing list of keywords.

Value

A vector of words.

activetext/activeR documentation built on May 31, 2024, 10:21 a.m.