Corpus linguistics involves using large collections of natural language texts, known as corpora, to study patterns of language usage. Corpora provide insights into how language varies between spoken and written forms as well as formal and casual contexts. Creating corpora from spoken language through transcription can be time-consuming. Different types of corpora exist for various research topics in linguistics. Important factors in corpus design include size, representativeness, and whether the sample is based on production or reception of language. Compiling corpora, especially from spoken language, requires obtaining and processing text data.

1. Corpus Linguistics
Jesus Guerrero Perez

2. 
Corpus linguistics means to explore actual
patterns of language use and as a tool for
developing materials for classroom language
instruction. Corpus linguistics provides an
extremely powerful tool for the analysis of
natural language and can provide
tremendous insights as to how language use
varies in different situations, such as spoken
versus written or formal interactions versus
casual conversation.

3.  A corpus refers to a large principled
collection of natural texts. The process of
creating written transcripts of spoken
language can be quite time – consuming,
involving a series of choices based on
research interests of the corpus compilers

4.  Corpus design and compilation A corpus,
as a defined above, is a large and
principled collection of texts stored in
electronic format.
 Types of corpora There are many types of
corpora as there are research topics in
linguistics General corpora Specialized
corpora Learners corpus

5.  Issues in corpus design One of the most
important factors in corpus linguistics is
the design of the corpus. A corpus of one
million words will not be large enough to
provide reliable information about less
frequent lexical items. An issue to
consider in devising a representative
sample whether or not it should be based
on production or reception.

6. 
Corpus compilation When creating a corpus ,
data collection involves obtaining or creating
electronic versions of the target texts.
Written data are far less labor than spoken
corpora. The data collection phase of building
a spoken corpus is lengthy and expensive.
Most spoken corpora use orthographic
transcription system that does not attempt to
capture prosodic details or phonetic variation.