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pipeline_tag: sentence-similarity
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language:
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- en
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tags:
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- linktransformer
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- sentence-transformers
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- sentence-similarity
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- tabular-classification
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# matthewleechen/lt_namesonly_science
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This is a [LinkTransformer](https://linktransformer.github.io/) model. At its core this model this is a sentence transformer model [sentence-transformers](https://www.SBERT.net) model- it just wraps around the class.
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It is designed for quick and easy record linkage (entity-matching) through the LinkTransformer package. The tasks include clustering, deduplication, linking, aggregation and more.
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Notwithstanding that, it can be used for any sentence similarity task within the sentence-transformers framework as well.
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It maps sentences & paragraphs to a 768 dimensional dense vector space and can be used for tasks like clustering or semantic search.
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Take a look at the documentation of [sentence-transformers](https://www.sbert.net/index.html) if you want to use this model for more than what we support in our applications.
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This model has been fine-tuned on the model : sentence-transformers/multi-qa-mpnet-base-dot-v1. It is pretrained for the language : - en.
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test
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## Usage (LinkTransformer)
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Using this model becomes easy when you have [LinkTransformer](https://github.com/dell-research-harvard/linktransformer) installed:
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```
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pip install -U linktransformer
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```
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Then you can use the model like this:
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```python
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import linktransformer as lt
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import pandas as pd
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##Load the two dataframes that you want to link. For example, 2 dataframes with company names that are written differently
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df1=pd.read_csv("data/df1.csv") ###This is the left dataframe with key CompanyName for instance
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df2=pd.read_csv("data/df2.csv") ###This is the right dataframe with key CompanyName for instance
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###Merge the two dataframes on the key column!
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df_merged = lt.merge(df1, df2, on="CompanyName", how="inner")
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##Done! The merged dataframe has a column called "score" that contains the similarity score between the two company names
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```
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## Training your own LinkTransformer model
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Any Sentence Transformers can be used as a backbone by simply adding a pooling layer. Any other transformer on HuggingFace can also be used by specifying the option add_pooling_layer==True
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The model was trained using SupCon loss.
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Usage can be found in the package docs.
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The training config can be found in the repo with the name LT_training_config.json
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To replicate the training, you can download the file and specify the path in the config_path argument of the training function. You can also override the config by specifying the training_args argument.
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Here is an example.
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```python
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##Consider the example in the paper that has a dataset of Mexican products and their tariff codes from 1947 and 1948 and we want train a model to link the two tariff codes.
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saved_model_path = train_model(
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model_path="hiiamsid/sentence_similarity_spanish_es",
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dataset_path=dataset_path,
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left_col_names=["description47"],
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right_col_names=['description48'],
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left_id_name=['tariffcode47'],
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right_id_name=['tariffcode48'],
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log_wandb=False,
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config_path=LINKAGE_CONFIG_PATH,
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training_args={"num_epochs": 1}
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)
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```
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You can also use this package for deduplication (clusters a df on the supplied key column). Merging a fine class (like product) to a coarse class (like HS code) is also possible.
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Read our paper and the documentation for more!
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## Evaluation Results
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<!--- Describe how your model was evaluated -->
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You can evaluate the model using the [LinkTransformer](https://github.com/dell-research-harvard/linktransformer) package's inference functions.
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We have provided a few datasets in the package for you to try out. We plan to host more datasets on Huggingface and our website (Coming soon) that you can take a look at.
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## Training
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The model was trained with the parameters:
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**DataLoader**:
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`torch.utils.data.dataloader.DataLoader` of length 25 with parameters:
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```
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{'batch_size': 64, 'sampler': 'torch.utils.data.dataloader._InfiniteConstantSampler', 'batch_sampler': 'torch.utils.data.sampler.BatchSampler'}
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```
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**Loss**:
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`linktransformer.modified_sbert.losses.SupConLoss_wandb`
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Parameters of the fit()-Method:
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```
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{
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"epochs": 200,
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"evaluation_steps": 3,
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"evaluator": "sentence_transformers.evaluation.SequentialEvaluator.SequentialEvaluator",
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"max_grad_norm": 1,
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"optimizer_class": "<class 'torch.optim.adamw.AdamW'>",
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"optimizer_params": {
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"lr": 2e-06
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},
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"scheduler": "WarmupLinear",
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"steps_per_epoch": null,
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"warmup_steps": 5000,
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"weight_decay": 0.01
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}
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```
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LinkTransformer(
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(0): Transformer({'max_seq_length': 512, 'do_lower_case': False}) with Transformer model: MPNetModel
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(1): Pooling({'word_embedding_dimension': 768, 'pooling_mode_cls_token': True, 'pooling_mode_mean_tokens': False, 'pooling_mode_max_tokens': False, 'pooling_mode_mean_sqrt_len_tokens': False, 'pooling_mode_weightedmean_tokens': False, 'pooling_mode_lasttoken': False, 'include_prompt': True})
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)
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```
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## Citing & Authors
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```
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@misc{arora2023linktransformer,
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title={LinkTransformer: A Unified Package for Record Linkage with Transformer Language Models},
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author={Abhishek Arora and Melissa Dell},
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year={2023},
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eprint={2309.00789},
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archivePrefix={arXiv},
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primaryClass={cs.CL}
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}
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```
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### Model Overview
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This is a LinkTransformer model trained to capture similarity of names found in scientific publications and biographical databases.
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