Document omit_row noise type

docs/source/noise/row_noise.rst

@@ -4,5 +4,30 @@
 Row-based Noise
 ===============
 
+Row-based noise operates on one row of data at a time, for example by omitting
+or duplicating entire rows.
+
 Omit a row
 ----------
+
+Sometimes an entire record may be missing from a dataset where one would
+normally expect to find it. For example, a WIC record could be missing by
+mistake because of a clerical error, or someone's tax record could be missing
+because they didn't file their taxes on time.
+
+This noise type is called :code:`omit_row` in the configuration. It takes one
+parameter:
+
+.. list-table:: Parameters to the omit_row noise type
+  :widths: 1 5 1
+  :header-rows: 1
+
+  * - Parameter
+    - Description
+    - Default
+  * - :code:`row_probability`
+    - The probability that a row is missing from the dataset.
+    - 0.01 (1%)
+
+When applying :code:`omit_row` noise, each row of data is selected for omission
+independently with probability :code:`row_probability`.