InputTable Schema
The size of this table determines the size of the value_col column of the ModelTable. If any cell of the value_col column exceeds 64 KB, you cannot use the ModelTable with the LDAInference or LDATopicSummary function.
| Column | Data Type | Description |
|---|---|---|
| doc_id_column | INTEGER, SMALLINT, BIGINT, NUMERIC, VARCHAR, or VARBYTE(n). | Document identifier. |
| word_column | INTEGER, SMALLINT, BIGINT, or VARCHAR | Word. |
| count_column | INTEGER, SMALLINT, BIGINT, NUMERIC, or DOUBLE PRECISION | [Column appears only with CountColumn argument.] Number of times word appears in document. |
You can use TextParser Output as input to the LDA function. Teradata recommends filtering out words with low and high frequency, which impact topics that consist of common words that are not meaningful in the topic model.