Structured collections of annotated linguistic data are essential in most areas of NLP, however, we still face many obstacles in using them.The goal of this chapter is to answer the following questions: Along the way, we will study the design of existing corpora, the typical workflow for creating a corpus, and the lifecycle of corpus.The ETL Listed Mark indicates to distributors, retailers and customers that your product has been tested by Intertek and found in compliance with accepted national standards. Intertek provides product safety testing and certification services for companies spanning multiple industries, markets, and applications. Edison’s vision was to provide assurance to consumers through product performance and safety testing.For a comprehensive look at which products bear our mark, view our Directory of Listed Products. When manufacturers apply Intertek’s ETL Listed Mark to their products, the letters “ETL” carry with them a long history of innovation, influence, and independence.
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Moreover, notice that all of the data types included in the TIMIT corpus fall into the two basic categories of lexicon and text, which we will discuss below.
Even the speaker demographics data is just another instance of the lexicon data type.
This last observation is less surprising when we consider that text and record structures are the primary domains for the two subfields of computer science that focus on data management, namely text retrieval and databases.
A notable feature of linguistic data management is that usually brings both data types together, and that it can draw on results and techniques from both fields.