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item_files/README.md

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+# Item Files
+
+Item files are required inputs for the ABXpy evaluation. These files define the minimal pair comparisons used to compute ABX scores.
+
+Scripts for generating item files can be found in [this section](https://github.com/bootphon/AESRC/bin/evals/items).
+
+## Contents
+
+* **dev**: Contains item files for the development set, e.g., `dev_american_item.item`.
+* **test**: Contains item files for the test set, e.g., `test_american_item.item`.
+
+## Example Item File Format
+
+| file        | onset  | offset | #phone | prev-phone | next-phone | speaker |
+| ----------- | ------ | ------ | ------ | ---------- | ---------- | ------- |
+| G00473S1001 | 0.5775 | 0.8775 | m      | aɪ         | ɪ          | G00473  |
+
+Each row specifies a phone segment to be evaluated, along with its context and speaker identity.
+
+