* Update utils.py * Update retrieval.py * Update utils.py * Update retrieval.py * add env var * rename to SENTENCE_TRANSFORMERS_CROSS_ENCODER_SIGMOID_ACTIVATION_FUNCTION
* Update utils.py * Update retrieval.py * Update utils.py * Update retrieval.py * add env var * rename to SENTENCE_TRANSFORMERS_CROSS_ENCODER_SIGMOID_ACTIVATION_FUNCTION