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# Look Up Vocabulary

IDOL Speech Server can list the 30,000 most frequent words in a specific language model.

To obtain the vocabulary listing

- Send an `AddTask` action to IDOL Speech Server, and set the following parameters:

  `Type` | The task name. Set to `LmListVocab`.
  `Tlm` | The language model to query. The language model file is a .tlm file in the relevant language pack.
  `Out` | The file to write the results to.

For example:

    http://localhost:13000/action=AddTask&Type=LmListVocab&Tlm=C:\LP\ENUK\ver-ENUK-5.0.tlm&Out=ENUKvocab.ctm

This action uses port `13000` to instruct IDOL Speech Server, which is located on the local machine, to write the 30,000 most frequently occurring words in the `ver-ENUK-5.0.tlm` language model to the `ENUKvocab.ctm` file.

This action returns a token. You can use the token to:

- Check the task status. See Check the Status of a Task.
- Retrieve the results. See Find Recommended Language Resources to Use in a Task.

The results specify the 30,000 most frequently occurring words, starting from the most frequent word.

In addition to listing the vocabulary, you can search the language model for a specific word and, if present, where it is ranked in terms of frequency.

To search for a word

- Send an `AddTask` action to IDOL Speech Server, and set the following parameters:

  `Type` | The task name. Set to `LmLookup`.
  `Tlm` | The language model to query. The language model file is a .tlm file in the relevant language pack.
  `Word` | The word to look up.
  `Out` | The file to write the results to.

For example:

    http://localhost:13000/action=AddTask&Type=LmLookup&Tlm=C:\LP\ENUK\ver-ENUK-5.0.tlm&Word=garden&Out=SearchResult.ctm

This action uses port `13000` to instruct IDOL Speech Server, which is located on the local machine, to search the `ver-ENUK-5.0.tlm` language model file for the word ‘`garden`’ and write the results to the `SearchResult.ctm` file.

This action returns a token. You can use the token to:

- Check the task status. See Check the Status of a Task.
- Retrieve the results. See Find Recommended Language Resources to Use in a Task.

IDOL Speech Server displays the results in the format:

    Word [word], rank: xxx

where word is the search term and xxx is the frequency ranking in the language model (`1` is the most frequent word).

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