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---
tags:
- sentence-transformers
- sentence-similarity
- feature-extraction
- dense
- generated_from_trainer
- dataset_size:3872
- loss:MultipleNegativesRankingLoss
widget:
- source_sentence: (g) If a Member wishes to extend their stay and has enough Nightly
    Upgrade Award(s) to cover the extension, the Member must book a separate reservation
    for the additional nights and request to use Nightly Upgrade Awards on Marriott
    Websites or by calling Member Support; the Nightly Upgrade Award request cannot
    be processed at the Participating Property.
  sentences:
  - Flexible rates cancel up to a deadline the property sets.
  - DONT book a non-refundable hotel without reading the cancellation policy because
    you must understand the exact penalty structurewhether you forfeit one night,
    the full amount, or a percentageto determine your coverage needs and ensure your
    insurance limit is adequate.
  - As for semi-flexible plans, they might require notice at least five days before
    check-in.
- source_sentence: Checking out late at a hotel isnt guaranteed, especially when it
    comes to complimentary late check-out.
  sentences:
  - However, the late check-out policy will vary based on the specific hotels policy.
  - The hotel guest damage clause is a crucial aspect of your reservation agreement
    that aims to protect both the hotels property and the guests interests.
  - Yes, if a clean room is available.
- source_sentence: refund terms and conditions
  sentences:
  - CANCELLATION OR MODIFICATION OF A SERVICE RESERVATION
  - Elite status doesn't always change the written policy, but it can give you leverage
    with customer service if you need an exception.
  - 'Trick #2  Resell the nonrefundable hotel room'
- source_sentence: occupancy rules guidelines for guests
  sentences:
  - Most hotel insurance policies provide coverage for theft, damage, or loss of personal
    property under certain conditions.
  - Choose designated smoking areas outside the hotel.
  - 'Semi-Flexible Rates : Some properties offer rates that allow cancellation with
    a fee (e.g., $50) or partial refund up to a certain point.'
- source_sentence: Smoking or vaping is allowed in designated rooms.
  sentences:
  - Some upgrades to Premium Rooms require payment in local currency and cannot be
    purchased with Points.
  - Marriott is committed to providing its guests and associates with a smoke-free
    environment, and is proud to boast one of the most comprehensive smoke-free hotel
    policies in the industry.
  - Participating Properties outside the United States may provide alternative services
    and benefits to the Elite membership benefits set forth in these Program Rules,
    depending on local law and policy.
pipeline_tag: sentence-similarity
library_name: sentence-transformers
metrics:
- pearson_cosine
- spearman_cosine
model-index:
- name: SentenceTransformer
  results:
  - task:
      type: semantic-similarity
      name: Semantic Similarity
    dataset:
      name: val
      type: val
    metrics:
    - type: pearson_cosine
      value: 0.6244156998181909
      name: Pearson Cosine
    - type: spearman_cosine
      value: 0.6463453957364179
      name: Spearman Cosine
---

# SentenceTransformer

This is a [sentence-transformers](https://www.SBERT.net) model trained for semantic text understanding. It maps sentences & paragraphs to a 384-dimensional dense vector space and can be used for semantic textual similarity, semantic search, paraphrase mining, classification, clustering, and more.

## Model Details

### Model Description
- **Model Type:** Sentence Transformer
<!-- - **Base model:** [Unknown](https://huggingface.co/unknown) -->
- **Maximum Sequence Length:** 128 tokens
- **Output Dimensionality:** 384 dimensions
- **Similarity Function:** Cosine Similarity
- **Supported Modality:** Text
<!-- - **Training Dataset:** Unknown -->
<!-- - **Language:** Unknown -->
<!-- - **License:** Unknown -->

### Model Sources

- **Documentation:** [Sentence Transformers Documentation](https://sbert.net)
- **Repository:** [Sentence Transformers on GitHub](https://github.com/huggingface/sentence-transformers)
- **Hugging Face:** [Sentence Transformers on Hugging Face](https://huggingface.co/models?library=sentence-transformers)

### Full Model Architecture

```
SentenceTransformer(
  (0): Transformer({'transformer_task': 'feature-extraction', 'modality_config': {'text': {'method': 'forward', 'method_output_name': 'last_hidden_state'}}, 'module_output_name': 'token_embeddings', 'architecture': 'BertModel'})
  (1): Pooling({'embedding_dimension': 384, 'pooling_mode': 'mean', 'include_prompt': True})
  (2): Normalize({})
)
```

## Usage

### Direct Usage (Sentence Transformers)

First install the Sentence Transformers library:

```bash
pip install -U sentence-transformers
```
Then you can load this model and run inference.
```python
from sentence_transformers import SentenceTransformer

# Download from the 🤗 Hub
model = SentenceTransformer("HarishMaths/Hotel-Policy-Embedding")
# Run inference
sentences = [
    'Smoking or vaping is allowed in designated rooms.',
    'Marriott is committed to providing its guests and associates with a smoke-free environment, and is proud to boast one of the most comprehensive smoke-free hotel policies in the industry.',
    'Some upgrades to Premium Rooms require payment in local currency and cannot be purchased with Points.',
]
embeddings = model.encode(sentences)
print(embeddings.shape)
# [3, 384]

# Get the similarity scores for the embeddings
similarities = model.similarity(embeddings, embeddings)
print(similarities)
# tensor([[1.0000, 0.9151, 0.2602],
#         [0.9151, 1.0000, 0.3726],
#         [0.2602, 0.3726, 1.0000]])
```
<!--
### Direct Usage (Transformers)

<details><summary>Click to see the direct usage in Transformers</summary>

</details>
-->

<!--
### Downstream Usage (Sentence Transformers)

You can finetune this model on your own dataset.

<details><summary>Click to expand</summary>

</details>
-->

<!--
### Out-of-Scope Use

*List how the model may foreseeably be misused and address what users ought not to do with the model.*
-->

## Evaluation

### Metrics

#### Semantic Similarity

* Dataset: `val`
* Evaluated with [<code>EmbeddingSimilarityEvaluator</code>](https://sbert.net/docs/package_reference/sentence_transformer/evaluation.html#sentence_transformers.sentence_transformer.evaluation.EmbeddingSimilarityEvaluator)

| Metric              | Value      |
|:--------------------|:-----------|
| pearson_cosine      | 0.6244     |
| **spearman_cosine** | **0.6463** |

<!--
## Bias, Risks and Limitations

*What are the known or foreseeable issues stemming from this model? You could also flag here known failure cases or weaknesses of the model.*
-->

<!--
### Recommendations

*What are recommendations with respect to the foreseeable issues? For example, filtering explicit content.*
-->

## Training Details

### Training Dataset

#### Unnamed Dataset

* Size: 3,872 training samples
* Columns: <code>sentence_0</code> and <code>sentence_1</code>
* Approximate statistics based on the first 100 samples:
  |          | sentence_0                                                                         | sentence_1                                                                         |
  |:---------|:-----------------------------------------------------------------------------------|:-----------------------------------------------------------------------------------|
  | type     | string                                                                             | string                                                                             |
  | modality | text                                                                               | text                                                                               |
  | details  | <ul><li>min: 6 tokens</li><li>mean: 24.39 tokens</li><li>max: 117 tokens</li></ul> | <ul><li>min: 9 tokens</li><li>mean: 27.12 tokens</li><li>max: 103 tokens</li></ul> |
* Samples:
  | sentence_0                                                                                                                                      | sentence_1                                                                                                                                                                                                                 |
  |:------------------------------------------------------------------------------------------------------------------------------------------------|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
  | <code>Three months after booking and 20 days after purchasing insurance, the tour operator files bankruptcy and ceases all operations.</code>   | <code>California SB 644 requires hotels and third-party booking sites to give a full refund when a guest cancels within 24 hours of booking, as long as the reservation was made at least 72 hours before check-in.</code> |
  | <code>One of the easiest ways to avoid resort fees is by booking an award stay.</code>                                                          | <code>For a typical domestic Hilton hotel, it will show you the points options and cash rates all on one screen.</code>                                                                                                    |
  | <code>The General Contractor went out to several Home Depot locations around the City to find over 250 battery-operated smoke detectors.</code> | <code>Modern sensors detect vapour, and the resulting charge is identical to a cigarette violation.</code>                                                                                                                 |
* Loss: [<code>MultipleNegativesRankingLoss</code>](https://sbert.net/docs/package_reference/sentence_transformer/losses.html#multiplenegativesrankingloss) with these parameters:
  ```json
  {
      "scale": 20.0,
      "similarity_fct": "cos_sim",
      "gather_across_devices": false,
      "directions": [
          "query_to_doc"
      ],
      "partition_mode": "joint",
      "hardness_mode": null,
      "hardness_strength": 0.0
  }
  ```

### Training Hyperparameters
#### Non-Default Hyperparameters

- `per_device_train_batch_size`: 32
- `num_train_epochs`: 25
- `fp16`: True
- `per_device_eval_batch_size`: 32
- `multi_dataset_batch_sampler`: round_robin

#### All Hyperparameters
<details><summary>Click to expand</summary>

- `per_device_train_batch_size`: 32
- `num_train_epochs`: 25
- `max_steps`: -1
- `learning_rate`: 5e-05
- `lr_scheduler_type`: linear
- `lr_scheduler_kwargs`: None
- `warmup_steps`: 0
- `optim`: adamw_torch_fused
- `optim_args`: None
- `weight_decay`: 0.0
- `adam_beta1`: 0.9
- `adam_beta2`: 0.999
- `adam_epsilon`: 1e-08
- `optim_target_modules`: None
- `gradient_accumulation_steps`: 1
- `average_tokens_across_devices`: True
- `max_grad_norm`: 1
- `label_smoothing_factor`: 0.0
- `bf16`: False
- `fp16`: True
- `bf16_full_eval`: False
- `fp16_full_eval`: False
- `tf32`: None
- `gradient_checkpointing`: False
- `gradient_checkpointing_kwargs`: None
- `torch_compile`: False
- `torch_compile_backend`: None
- `torch_compile_mode`: None
- `use_liger_kernel`: False
- `liger_kernel_config`: None
- `use_cache`: False
- `neftune_noise_alpha`: None
- `torch_empty_cache_steps`: None
- `auto_find_batch_size`: False
- `log_on_each_node`: True
- `logging_nan_inf_filter`: True
- `include_num_input_tokens_seen`: no
- `log_level`: passive
- `log_level_replica`: warning
- `disable_tqdm`: False
- `project`: huggingface
- `trackio_space_id`: None
- `trackio_bucket_id`: None
- `trackio_static_space_id`: None
- `per_device_eval_batch_size`: 32
- `prediction_loss_only`: True
- `eval_on_start`: False
- `eval_do_concat_batches`: True
- `eval_use_gather_object`: False
- `eval_accumulation_steps`: None
- `include_for_metrics`: []
- `batch_eval_metrics`: False
- `save_only_model`: False
- `save_on_each_node`: False
- `enable_jit_checkpoint`: False
- `push_to_hub`: False
- `hub_private_repo`: None
- `hub_model_id`: None
- `hub_strategy`: every_save
- `hub_always_push`: False
- `hub_revision`: None
- `load_best_model_at_end`: False
- `ignore_data_skip`: False
- `restore_callback_states_from_checkpoint`: False
- `full_determinism`: False
- `seed`: 42
- `data_seed`: None
- `use_cpu`: False
- `accelerator_config`: {'split_batches': False, 'dispatch_batches': None, 'even_batches': True, 'use_seedable_sampler': True, 'non_blocking': False, 'gradient_accumulation_kwargs': None}
- `parallelism_config`: None
- `dataloader_drop_last`: False
- `dataloader_num_workers`: 0
- `dataloader_pin_memory`: True
- `dataloader_persistent_workers`: False
- `dataloader_prefetch_factor`: None
- `dataloader_multiprocessing_context`: None
- `dataloader_in_order`: True
- `remove_unused_columns`: True
- `label_names`: None
- `train_sampling_strategy`: random
- `length_column_name`: length
- `ddp_find_unused_parameters`: None
- `ddp_bucket_cap_mb`: None
- `ddp_broadcast_buffers`: False
- `ddp_static_graph`: None
- `ddp_backend`: None
- `ddp_timeout`: 1800
- `fsdp`: None
- `fsdp_config`: None
- `deepspeed`: None
- `debug`: []
- `skip_memory_metrics`: True
- `do_predict`: False
- `resume_from_checkpoint`: None
- `local_rank`: -1
- `prompts`: None
- `batch_sampler`: batch_sampler
- `multi_dataset_batch_sampler`: round_robin
- `router_mapping`: {}
- `learning_rate_mapping`: {}
- `warmup_ratio`: None

</details>

### Training Logs
| Epoch   | Step | Training Loss | val_spearman_cosine |
|:-------:|:----:|:-------------:|:-------------------:|
| -1      | -1   | -             | 0.1722              |
| 0.8264  | 100  | -             | 0.2700              |
| 1.0     | 121  | -             | 0.2967              |
| 1.6529  | 200  | -             | 0.4105              |
| 2.0     | 242  | -             | 0.4552              |
| 2.4793  | 300  | -             | 0.4991              |
| 3.0     | 363  | -             | 0.5376              |
| 3.3058  | 400  | -             | 0.5566              |
| 4.0     | 484  | -             | 0.5790              |
| 4.1322  | 500  | 3.5721        | 0.5825              |
| 4.9587  | 600  | -             | 0.6156              |
| 5.0     | 605  | -             | 0.6162              |
| 5.7851  | 700  | -             | 0.6144              |
| 6.0     | 726  | -             | 0.6166              |
| 6.6116  | 800  | -             | 0.6266              |
| 7.0     | 847  | -             | 0.6269              |
| 7.4380  | 900  | -             | 0.6348              |
| 8.0     | 968  | -             | 0.6276              |
| 8.2645  | 1000 | 2.4308        | 0.6329              |
| 9.0     | 1089 | -             | 0.6336              |
| 9.0909  | 1100 | -             | 0.6332              |
| 9.9174  | 1200 | -             | 0.6399              |
| 10.0    | 1210 | -             | 0.6381              |
| 10.7438 | 1300 | -             | 0.6390              |
| 11.0    | 1331 | -             | 0.6397              |
| 11.5702 | 1400 | -             | 0.6446              |
| 12.0    | 1452 | -             | 0.6418              |
| 12.3967 | 1500 | 2.1294        | 0.6463              |


### Framework Versions
- Python: 3.13.15
- Sentence Transformers: 5.7.0
- Transformers: 5.16.1
- PyTorch: 2.11.0+cu128
- Accelerate: 1.14.0
- Datasets: 4.8.5
- Tokenizers: 0.23.1
---