SentenceTransformer based on answerdotai/ModernBERT-base

This is a sentence-transformers model finetuned from answerdotai/ModernBERT-base on the gooaq dataset. It maps sentences & paragraphs to a 768-dimensional dense vector space and can be used for semantic textual similarity, semantic search, paraphrase mining, text classification, clustering, and more.

This model has been finetuned using train_st_gooaq.py using an RTX 3090, although only 10GB of VRAM was used.

Model Details

Model Description

Model Type: Sentence Transformer
Base model: answerdotai/ModernBERT-base
Maximum Sequence Length: 512 tokens
Output Dimensionality: 768 dimensions
Similarity Function: Cosine Similarity
Training Dataset:
- gooaq
Language: en

Model Sources

Documentation: Sentence Transformers Documentation
Repository: Sentence Transformers on GitHub
Hugging Face: Sentence Transformers on Hugging Face

Full Model Architecture

SentenceTransformer(
  (0): Transformer({'max_seq_length': 512, 'do_lower_case': False}) with Transformer model: ModernBertModel 
  (1): Pooling({'word_embedding_dimension': 768, 'pooling_mode_cls_token': False, 'pooling_mode_mean_tokens': True, 'pooling_mode_max_tokens': False, 'pooling_mode_mean_sqrt_len_tokens': False, 'pooling_mode_weightedmean_tokens': False, 'pooling_mode_lasttoken': False, 'include_prompt': True})
)

Usage

Direct Usage (Sentence Transformers)

First install the Sentence Transformers library:

pip install -U sentence-transformers

Then you can load this model and run inference.

from sentence_transformers import SentenceTransformer

# Download from the 🤗 Hub
model = SentenceTransformer("tomaarsen/ModernBERT-base-gooaq")
# Run inference
sentences = [
    'are you human korean novela?',
    "Are You Human? (Korean: 너도 인간이니; RR: Neodo Inganini; lit. Are You Human Too?) is a 2018 South Korean television series starring Seo Kang-jun and Gong Seung-yeon. It aired on KBS2's Mondays and Tuesdays at 22:00 (KST) time slot, from June 4 to August 7, 2018.",
    'A relative of European pear varieties like Bartlett and Anjou, the Asian pear is great used in recipes or simply eaten out of hand. It retains a crispness that works well in slaws and salads, and it holds its shape better than European pears when baked and cooked.',
]
embeddings = model.encode(sentences)
print(embeddings.shape)
# [3, 768]

# Get the similarity scores for the embeddings
similarities = model.similarity(embeddings, embeddings)
print(similarities.shape)
# [3, 3]

Evaluation

Metrics

Information Retrieval

Datasets: NanoNQ and NanoMSMARCO
Evaluated with InformationRetrievalEvaluator

Metric	NanoNQ	NanoMSMARCO
cosine_accuracy@1	0.38	0.32
cosine_accuracy@3	0.64	0.56
cosine_accuracy@5	0.7	0.66
cosine_accuracy@10	0.8	0.82
cosine_precision@1	0.38	0.32
cosine_precision@3	0.22	0.1867
cosine_precision@5	0.144	0.132
cosine_precision@10	0.082	0.082
cosine_recall@1	0.36	0.32
cosine_recall@3	0.62	0.56
cosine_recall@5	0.67	0.66
cosine_recall@10	0.74	0.82
cosine_ndcg@10	0.5674	0.5554
cosine_mrr@10	0.5237	0.4725
cosine_map@100	0.5117	0.4798

Nano BEIR

Dataset: NanoBEIR_mean
Evaluated with NanoBEIREvaluator

Metric	Value
cosine_accuracy@1	0.35
cosine_accuracy@3	0.6
cosine_accuracy@5	0.68
cosine_accuracy@10	0.81
cosine_precision@1	0.35
cosine_precision@3	0.2033
cosine_precision@5	0.138
cosine_precision@10	0.082
cosine_recall@1	0.34
cosine_recall@3	0.59
cosine_recall@5	0.665
cosine_recall@10	0.78
cosine_ndcg@10	0.5614
cosine_mrr@10	0.4981
cosine_map@100	0.4957

Training Details

Training Dataset

gooaq

Dataset: gooaq at b089f72
Size: 3,012,496 training samples
Columns: question and answer
Approximate statistics based on the first 1000 samples:
question answer
type string string
details
min: 8 tokens
mean: 12.0 tokens
max: 21 tokens

min: 15 tokens
mean: 58.17 tokens
max: 190 tokens

	question	answer
type	string	string
details	min: 8 tokens mean: 12.0 tokens max: 21 tokens	min: 15 tokens mean: 58.17 tokens max: 190 tokens

Samples:

question	answer
`what is the difference between clay and mud mask?`	`The main difference between the two is that mud is a skin-healing agent, while clay is a cosmetic, drying agent. Clay masks are most useful for someone who has oily skin and is prone to breakouts of acne and blemishes.`
`myki how much on card?`	`A full fare myki card costs $6 and a concession, seniors or child myki costs $3. For more information about how to use your myki, visit ptv.vic.gov.au or call 1800 800 007.`
`how to find out if someone blocked your phone number on iphone?`	`If you get a notification like "Message Not Delivered" or you get no notification at all, that's a sign of a potential block. Next, you could try calling the person. If the call goes right to voicemail or rings once (or a half ring) then goes to voicemail, that's further evidence you may have been blocked.`

Loss: CachedMultipleNegativesRankingLoss with these parameters:

{
    "scale": 20.0,
    "similarity_fct": "cos_sim"
}

Evaluation Dataset

gooaq

Dataset: gooaq at b089f72
Size: 3,012,496 evaluation samples
Columns: question and answer
Approximate statistics based on the first 1000 samples:
question answer
type string string
details
min: 8 tokens
mean: 12.05 tokens
max: 21 tokens

min: 13 tokens
mean: 59.08 tokens
max: 116 tokens

	question	answer
type	string	string
details	min: 8 tokens mean: 12.05 tokens max: 21 tokens	min: 13 tokens mean: 59.08 tokens max: 116 tokens

Samples:

question	answer
`how do i program my directv remote with my tv?`	`['Press MENU on your remote.', 'Select Settings & Help > Settings > Remote Control > Program Remote.', 'Choose the device (TV, audio, DVD) you wish to program. ... ', 'Follow the on-screen prompts to complete programming.']`
`are rodrigues fruit bats nocturnal?`	`Before its numbers were threatened by habitat destruction, storms, and hunting, some of those groups could number 500 or more members. Sunrise, sunset. Rodrigues fruit bats are most active at dawn, at dusk, and at night.`
`why does your heart rate increase during exercise bbc bitesize?`	`During exercise there is an increase in physical activity and muscle cells respire more than they do when the body is at rest. The heart rate increases during exercise. The rate and depth of breathing increases - this makes sure that more oxygen is absorbed into the blood, and more carbon dioxide is removed from it.`

Loss: CachedMultipleNegativesRankingLoss with these parameters:

{
    "scale": 20.0,
    "similarity_fct": "cos_sim"
}

Training Hyperparameters

Non-Default Hyperparameters

eval_strategy: steps
per_device_train_batch_size: 2048
per_device_eval_batch_size: 2048
learning_rate: 8e-05
num_train_epochs: 1
warmup_ratio: 0.05
bf16: True
batch_sampler: no_duplicates

All Hyperparameters

Click to expand

overwrite_output_dir: False
do_predict: False
eval_strategy: steps
prediction_loss_only: True
per_device_train_batch_size: 2048
per_device_eval_batch_size: 2048
per_gpu_train_batch_size: None
per_gpu_eval_batch_size: None
gradient_accumulation_steps: 1
eval_accumulation_steps: None
torch_empty_cache_steps: None
learning_rate: 8e-05
weight_decay: 0.0
adam_beta1: 0.9
adam_beta2: 0.999
adam_epsilon: 1e-08
max_grad_norm: 1.0
num_train_epochs: 1
max_steps: -1
lr_scheduler_type: linear
lr_scheduler_kwargs: {}
warmup_ratio: 0.05
warmup_steps: 0
log_level: passive
log_level_replica: warning
log_on_each_node: True
logging_nan_inf_filter: True
save_safetensors: True
save_on_each_node: False
save_only_model: False
restore_callback_states_from_checkpoint: False
no_cuda: False
use_cpu: False
use_mps_device: False
seed: 42
data_seed: None
jit_mode_eval: False
use_ipex: False
bf16: True
fp16: False
fp16_opt_level: O1
half_precision_backend: auto
bf16_full_eval: False
fp16_full_eval: False
tf32: None
local_rank: 0
ddp_backend: None
tpu_num_cores: None
tpu_metrics_debug: False
debug: []
dataloader_drop_last: False
dataloader_num_workers: 0
dataloader_prefetch_factor: None
past_index: -1
disable_tqdm: False
remove_unused_columns: True
label_names: None
load_best_model_at_end: False
ignore_data_skip: False
fsdp: []
fsdp_min_num_params: 0
fsdp_config: {'min_num_params': 0, 'xla': False, 'xla_fsdp_v2': False, 'xla_fsdp_grad_ckpt': False}
fsdp_transformer_layer_cls_to_wrap: None
accelerator_config: {'split_batches': False, 'dispatch_batches': None, 'even_batches': True, 'use_seedable_sampler': True, 'non_blocking': False, 'gradient_accumulation_kwargs': None}
deepspeed: None
label_smoothing_factor: 0.0
optim: adamw_torch
optim_args: None
adafactor: False
group_by_length: False
length_column_name: length
ddp_find_unused_parameters: None
ddp_bucket_cap_mb: None
ddp_broadcast_buffers: False
dataloader_pin_memory: True
dataloader_persistent_workers: False
skip_memory_metrics: True
use_legacy_prediction_loop: False
push_to_hub: False
resume_from_checkpoint: None
hub_model_id: None
hub_strategy: every_save
hub_private_repo: None
hub_always_push: False
gradient_checkpointing: False
gradient_checkpointing_kwargs: None
include_inputs_for_metrics: False
include_for_metrics: []
eval_do_concat_batches: True
fp16_backend: auto
push_to_hub_model_id: None
push_to_hub_organization: None
mp_parameters:
auto_find_batch_size: False
full_determinism: False
torchdynamo: None
ray_scope: last
ddp_timeout: 1800
torch_compile: False
torch_compile_backend: None
torch_compile_mode: None
dispatch_batches: None
split_batches: None
include_tokens_per_second: False
include_num_input_tokens_seen: False
neftune_noise_alpha: None
optim_target_modules: None
batch_eval_metrics: False
eval_on_start: False
use_liger_kernel: False
eval_use_gather_object: False
average_tokens_across_devices: False
prompts: None
batch_sampler: no_duplicates
multi_dataset_batch_sampler: proportional

Training Logs

Click to expand

Epoch	Step	Training Loss	Validation Loss	NanoNQ_cosine_ndcg@10	NanoMSMARCO_cosine_ndcg@10	NanoBEIR_mean_cosine_ndcg@10
0	0	-	-	0.0388	0.0785	0.0587
0.0068	10	6.9066	-	-	-	-
0.0136	20	4.853	-	-	-	-
0.0204	30	2.5305	-	-	-	-
0.0272	40	1.3877	-	-	-	-
0.0340	50	0.871	0.3358	0.4385	0.4897	0.4641
0.0408	60	0.6463	-	-	-	-
0.0476	70	0.5336	-	-	-	-
0.0544	80	0.4601	-	-	-	-
0.0612	90	0.4057	-	-	-	-
0.0680	100	0.366	0.1523	0.5100	0.4477	0.4789
0.0748	110	0.3498	-	-	-	-
0.0816	120	0.3297	-	-	-	-
0.0884	130	0.3038	-	-	-	-
0.0952	140	0.3062	-	-	-	-
0.1020	150	0.2976	0.1176	0.5550	0.4742	0.5146
0.1088	160	0.2843	-	-	-	-
0.1156	170	0.2732	-	-	-	-
0.1224	180	0.2549	-	-	-	-
0.1292	190	0.2584	-	-	-	-
0.1360	200	0.2451	0.1018	0.5313	0.4846	0.5079
0.1428	210	0.2521	-	-	-	-
0.1496	220	0.2451	-	-	-	-
0.1564	230	0.2367	-	-	-	-
0.1632	240	0.2359	-	-	-	-
0.1700	250	0.2343	0.0947	0.5489	0.4823	0.5156
0.1768	260	0.2263	-	-	-	-
0.1835	270	0.2225	-	-	-	-
0.1903	280	0.2219	-	-	-	-
0.1971	290	0.2136	-	-	-	-
0.2039	300	0.2202	0.0932	0.5165	0.4674	0.4920
0.2107	310	0.2198	-	-	-	-
0.2175	320	0.21	-	-	-	-
0.2243	330	0.207	-	-	-	-
0.2311	340	0.1972	-	-	-	-
0.2379	350	0.2037	0.0877	0.5231	0.5039	0.5135
0.2447	360	0.2054	-	-	-	-
0.2515	370	0.197	-	-	-	-
0.2583	380	0.1922	-	-	-	-
0.2651	390	0.1965	-	-	-	-
0.2719	400	0.1962	0.0843	0.5409	0.4746	0.5078
0.2787	410	0.186	-	-	-	-
0.2855	420	0.1911	-	-	-	-
0.2923	430	0.1969	-	-	-	-
0.2991	440	0.193	-	-	-	-
0.3059	450	0.1912	0.0763	0.5398	0.5083	0.5241
0.3127	460	0.1819	-	-	-	-
0.3195	470	0.1873	-	-	-	-
0.3263	480	0.1899	-	-	-	-
0.3331	490	0.1764	-	-	-	-
0.3399	500	0.1828	0.0728	0.5439	0.5176	0.5308
0.3467	510	0.1753	-	-	-	-
0.3535	520	0.1725	-	-	-	-
0.3603	530	0.1758	-	-	-	-
0.3671	540	0.183	-	-	-	-
0.3739	550	0.1789	0.0733	0.5437	0.5185	0.5311
0.3807	560	0.1773	-	-	-	-
0.3875	570	0.1764	-	-	-	-
0.3943	580	0.1638	-	-	-	-
0.4011	590	0.1809	-	-	-	-
0.4079	600	0.1727	0.0700	0.5550	0.5021	0.5286
0.4147	610	0.1664	-	-	-	-
0.4215	620	0.1683	-	-	-	-
0.4283	630	0.1622	-	-	-	-
0.4351	640	0.1592	-	-	-	-
0.4419	650	0.168	0.0662	0.5576	0.4843	0.5210
0.4487	660	0.1696	-	-	-	-
0.4555	670	0.1609	-	-	-	-
0.4623	680	0.1644	-	-	-	-
0.4691	690	0.1643	-	-	-	-
0.4759	700	0.1604	0.0660	0.5605	0.5042	0.5323
0.4827	710	0.1634	-	-	-	-
0.4895	720	0.1515	-	-	-	-
0.4963	730	0.1592	-	-	-	-
0.5031	740	0.1597	-	-	-	-
0.5099	750	0.1617	0.0643	0.5576	0.4830	0.5203
0.5167	760	0.1512	-	-	-	-
0.5235	770	0.1563	-	-	-	-
0.5303	780	0.1529	-	-	-	-
0.5370	790	0.1547	-	-	-	-
0.5438	800	0.1548	0.0620	0.5538	0.5271	0.5405
0.5506	810	0.1533	-	-	-	-
0.5574	820	0.1504	-	-	-	-
0.5642	830	0.1489	-	-	-	-
0.5710	840	0.1534	-	-	-	-
0.5778	850	0.1507	0.0611	0.5697	0.5095	0.5396
0.5846	860	0.1475	-	-	-	-
0.5914	870	0.1474	-	-	-	-
0.5982	880	0.1499	-	-	-	-
0.6050	890	0.1454	-	-	-	-
0.6118	900	0.1419	0.0620	0.5586	0.5229	0.5407
0.6186	910	0.1465	-	-	-	-
0.6254	920	0.1436	-	-	-	-
0.6322	930	0.1464	-	-	-	-
0.6390	940	0.1418	-	-	-	-
0.6458	950	0.1443	0.0565	0.5627	0.5458	0.5543
0.6526	960	0.1458	-	-	-	-
0.6594	970	0.1431	-	-	-	-
0.6662	980	0.1417	-	-	-	-
0.6730	990	0.1402	-	-	-	-
0.6798	1000	0.1431	0.0563	0.5499	0.5366	0.5432
0.6866	1010	0.1386	-	-	-	-
0.6934	1020	0.1413	-	-	-	-
0.7002	1030	0.1381	-	-	-	-
0.7070	1040	0.1364	-	-	-	-
0.7138	1050	0.1346	0.0545	0.5574	0.5416	0.5495
0.7206	1060	0.1338	-	-	-	-
0.7274	1070	0.1378	-	-	-	-
0.7342	1080	0.135	-	-	-	-
0.7410	1090	0.1336	-	-	-	-
0.7478	1100	0.1393	0.0541	0.5776	0.5362	0.5569
0.7546	1110	0.1427	-	-	-	-
0.7614	1120	0.1378	-	-	-	-
0.7682	1130	0.1346	-	-	-	-
0.7750	1140	0.1423	-	-	-	-
0.7818	1150	0.1368	0.0525	0.5681	0.5237	0.5459
0.7886	1160	0.1392	-	-	-	-
0.7954	1170	0.1321	-	-	-	-
0.8022	1180	0.1387	-	-	-	-
0.8090	1190	0.134	-	-	-	-
0.8158	1200	0.1369	0.0515	0.5613	0.5416	0.5514
0.8226	1210	0.1358	-	-	-	-
0.8294	1220	0.1401	-	-	-	-
0.8362	1230	0.1334	-	-	-	-
0.8430	1240	0.1331	-	-	-	-
0.8498	1250	0.1324	0.0510	0.5463	0.5546	0.5505
0.8566	1260	0.135	-	-	-	-
0.8634	1270	0.1367	-	-	-	-
0.8702	1280	0.1356	-	-	-	-
0.8770	1290	0.1291	-	-	-	-
0.8838	1300	0.1313	0.0498	0.5787	0.5552	0.5670
0.8906	1310	0.1334	-	-	-	-
0.8973	1320	0.1389	-	-	-	-
0.9041	1330	0.1302	-	-	-	-
0.9109	1340	0.1319	-	-	-	-
0.9177	1350	0.1276	0.0504	0.5757	0.5575	0.5666
0.9245	1360	0.1355	-	-	-	-
0.9313	1370	0.1289	-	-	-	-
0.9381	1380	0.1335	-	-	-	-
0.9449	1390	0.1298	-	-	-	-
0.9517	1400	0.1279	0.0497	0.5743	0.5567	0.5655
0.9585	1410	0.1324	-	-	-	-
0.9653	1420	0.1306	-	-	-	-
0.9721	1430	0.1313	-	-	-	-
0.9789	1440	0.135	-	-	-	-
0.9857	1450	0.1293	0.0493	0.5671	0.5554	0.5612
0.9925	1460	0.133	-	-	-	-
0.9993	1470	0.1213	-	-	-	-
1.0	1471	-	-	0.5674	0.5554	0.5614

Framework Versions

Python: 3.11.10
Sentence Transformers: 3.3.1
Transformers: 4.48.0.dev0
PyTorch: 2.6.0.dev20241112+cu121
Accelerate: 1.2.0
Datasets: 3.2.0
Tokenizers: 0.21.0

Citation

BibTeX

Sentence Transformers

@inproceedings{reimers-2019-sentence-bert,
    title = "Sentence-BERT: Sentence Embeddings using Siamese BERT-Networks",
    author = "Reimers, Nils and Gurevych, Iryna",
    booktitle = "Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing",
    month = "11",
    year = "2019",
    publisher = "Association for Computational Linguistics",
    url = "https://arxiv.org/abs/1908.10084",
}

CachedMultipleNegativesRankingLoss

@misc{gao2021scaling,
    title={Scaling Deep Contrastive Learning Batch Size under Memory Limited Setup},
    author={Luyu Gao and Yunyi Zhang and Jiawei Han and Jamie Callan},
    year={2021},
    eprint={2101.06983},
    archivePrefix={arXiv},
    primaryClass={cs.LG}
}