.. _fwflag_embedding_no_context:
========================
--embedding_no_context
========================
Switch
======

--embedding_no_context

Description
===========

Encodes each sentence/segment independently (without surrounding message context) when extracting features with :doc:`fwflag_add_bert`/:doc:`fwflag_add_emb`. Aliased as ``--emb_no_context``, ``--bert_no_context``.

Argument and Default Value
==========================

No argument. Boolean switch, default: ``False`` (context-aware encoding).

Details
=======

**Known issue — silently produces an empty feature table.** In this mode, ``FeatureExtractor.addEmbTable()`` calls ``tokenizer.encode_plus(...)`` inside a bare ``except:`` that catches and swallows any error, printing ``Message pair/ message unreadable. Skipping this....`` and continuing. Verified: running with ``--embedding_no_context`` completed "successfully" (exit 0, ``DLATK exits with success!``) but the resulting feature table had **0 rows** — every message ended up skipped by that catch-all, and the true underlying error is masked. The same command without this flag (context-aware mode) worked correctly and produced thousands of real feature rows. Also noticeably slower (~13s vs ~3s here) since it processes per-sentence rather than per-message.

Other Switches
==============

Required Switches:

* :doc:`fwflag_add_bert` or :doc:`fwflag_add_emb`

Example Commands
================

Not usable as of this writing — see Known issue above. Omit this flag for working (context-aware) embeddings:

.. code-block:: bash

	dlatkInterface.py -d dla_tutorial -t msgs -c user_id --add_bert