API Reference

Configuration

Config

Dataclass holding all training and model hyperparameters.

Parameter	Default	Description
Training
random_seed	42	Random seed for reproducibility
batch_size	16	Training batch size
eval_batch_size	32	Evaluation/inference batch size
epochs	10	Maximum training epochs
learning_rate	2e-5	AdamW learning rate
early_stopping_patience	3	Epochs without val loss improvement before stopping
Architecture
dropout_rate	0.2	Dropout probability in MLP layers
mlp_hidden_size	64	Hidden layer width
n_hidden_layers	1	Number of hidden layers in MLP
max_length	512	Max token length for tokenizer
Optimization
gradient_clip_norm	1.0	Max gradient norm for clipping
warmup_steps	0	Linear warmup steps
Embedding
embedding_model	'bert'	Encoder type (bert, scibert, pubmedbert, modernbert, sentence-transformer, bge-small)
model_name	None	HuggingFace model ID (auto-resolved from embedding_model if None)
pooling_strategy	'auto'	'auto', 'pooler', or 'mean'
Uncertainty
uncertainty_low	0.3	Below this probability, flag as uncertain
uncertainty_high	0.7	Above this probability, flag as uncertain
Cross-validation
n_folds	5	Number of stratified CV folds
calibration_method	'temperature'	Post-hoc calibration method
Active learning
al_query_strategy	'uncertainty'	Query strategy (uncertainty, random, max_relevance, hybrid_max_uncertainty, hybrid_max_random)
al_batch_size	20	Records per AL iteration
al_initial_sample_pct	0.1	Initial random sample fraction
Categorical encoding
rare_threshold	5	Minimum count for a categorical value to get its own embedding
Class weighting
pos_weight	'auto'	'auto' computes from training labels, None disables
SAFE stopping
safe_consecutive_irrelevant	50	Consecutive irrelevant records before stopping
safe_min_screened_pct	0.5	Minimum fraction screened before stopping allowed
safe_random_sample_pct	0.1	Random sample fraction for recall estimation
safe_switch_model	False	Switch model during screening phases

Preset Configurations

Preset	Description
default_config	Balanced defaults for general use
fast_config	Fewer epochs, larger batch size for quick experiments
robust_config	More epochs, lower learning rate for production
hitl_config	Human-in-the-loop screening settings
domain_configs	Domain-specific presets (science, medicine, general, modernbert)

sentence_transformer_models

Set of models that use the SentenceTransformer encoder (frozen, no fine-tuning).

Data

preprocess_dataset

Tokenize text columns and encode categorical/numeric features into a dataset. Pass fitted_transforms=None to fit from training data, or a FittedTransforms object to reuse on val/test sets. Returns (CustomDataset, FittedTransforms).

column_specifications

Dictionary specifying which DataFrame columns to use.

Key	Value	Example
text_cols	List of text column names	["TI", "AB"]
categorical_cols	List of categorical column names	["SO"]
numeric_cols	List of numeric column names	["PY"]
label_col	String (single-label) or list (multi-label)	"label" or ["label_1", "label_2"]

Numeric Transforms

Transform	Description
min	Subtract minimum value
max	Divide by maximum value
mean	Subtract mean
quantile	Quantile transform to normal distribution
robust	RobustScaler (median + IQR), better for outliers
log1p	log1p then quantile transform, for skewed features

load_data

Load data from CSV or Excel files.

split_data

Split a DataFrame into train, validation, and test sets.

FittedTransforms

Stores fitted parameters from training data for reuse on val/test sets. Serialize with to_dict() and restore with FittedTransforms.from_dict(d).

CustomDataset

Dataset holding tokenized text, categorical/numeric features, and labels.

create_dataloader

Create DataLoader with custom collate function.

collate_fn

Custom collate to handle text lists in batches.

Model

PubMLP

Multi-layer perceptron that combines transformer embeddings with categorical and numeric features.

Parameter	Description
categorical_vocab_sizes	List of vocab sizes for nn.Embedding per categorical column
output_size	1 for single-label, N for multi-label

Training & Evaluation

train_evaluate_model

Full training loop with validation, early stopping, and test evaluation. Returns (train_losses, val_losses, train_accs, val_accs, test_acc, best_val_loss, best_model_state, best_epoch).

calculate_loss

Average loss across all batches.

calculate_accuracy

Accuracy (%) across all batches; multi-label returns average per-label accuracy.

calculate_pos_weight

Compute pos_weight from label distribution (neg_count / pos_count per label).

calculate_evaluation_metrics

Compute classification report, confusion matrix, and ROC-AUC. Single label: returns accuracy, precision, recall, specificity, f1_score, roc_auc. Multi-label: returns per_label metrics, macro_f1, hamming_loss.

calculate_wss_at_recall

WSS@recall (Cohen et al., 2006): fraction of screening effort saved at target recall.

calculate_ndcg

NDCG via sklearn.metrics.ndcg_score (Järvelin & Kekäläinen, 2002).

cross_validate

Stratified K-fold cross-validation with per-fold metrics.

plot_results

Plot training/validation loss and accuracy curves.

TemperatureScaling

Post-hoc temperature scaling for model calibration.

calibrate_model

Fit temperature scaling on validation data.

collect_logits

Collect raw logits from a trained model.

Prediction

predict_model

Run inference and return predictions and probabilities. Single label: flat lists. Multi-label: list of lists.

get_predictions_and_labels

Get predictions, probabilities, and true labels from a labeled dataloader.

flag_uncertain

Flag predictions with probabilities in an uncertain range for human review. Multi-label: returns list of lists of bools.

Screening

regex_screen

Screen a dataset using regex patterns with optional semantic similarity scoring.

from pubmlp import regex_screen

results = regex_screen("records.csv", inclusion_patterns=["intervention", "randomized"])

extract_window_evidence

Extract word windows around regex matches.

extract_sentence_evidence

Extract complete sentences containing regex matches.

extract_all_evidence

Extract evidence from specified fields in a DataFrame row.

format_evidence_display

Format evidence list as ‘field: text; field: text; …’.

calculate_semantic_scores

Calculate cosine similarity between evidence texts and criterion description.

generate_descriptions

Draft criterion descriptions from regex pattern terms. Extracts literal terms from each pattern and composes a natural language description. The user should review and refine each description before use.

from pubmlp import generate_descriptions

patterns = {'math': {'pattern': r'\b(algebra|geometry)\w*\b'}}
drafts = generate_descriptions(patterns, domain='K-12 education')
# drafts['math']['description'] → "In K-12 education, the study addresses math..."
# drafts['math']['source'] → 'generated'

confirm_descriptions

Validate that all criteria have non-empty descriptions and return confirmed patterns. Optionally saves to JSON for reproducibility. Raises ValueError if any description is empty.

from pubmlp import confirm_descriptions

# After user edits drafts['math']['description']
confirmed = confirm_descriptions(drafts, save_path='confirmed.json')
# Returns dict ready for regex_screen() and score_full_text()

score_full_text

Score full record text (title + abstract) against each criterion description via cosine similarity. Scores all records including those with no regex match. Adds {criterion}_semantic_full column per criterion.

from pubmlp import score_full_text

df = score_full_text(df, confirmed_patterns, fields=['title', 'abstract'])
# df['math_semantic_full'] → cosine similarity for every record

compare_screening_configs

Run regex_screen with multiple configurations (different descriptions, window sizes, units) and return a summary DataFrame comparing match counts, semantic score distributions, and overlap.

from pubmlp import compare_screening_configs

comparison = compare_screening_configs('data.xlsx', {
    'specific': {'inclusion_patterns': patterns_v1},
    'broad': {'inclusion_patterns': patterns_v2, 'unit': 'window', 'window_size': 10},
})
# Returns DataFrame: config, criterion, n_matched, match_pct, semantic medians

create_stratified_sample

Create a stratified random sample with regex pattern highlights for human coding.

save_sample_excel

Save sample to Excel with conditional formatting for review.

apply_conditional_formatting

Apply conditional formatting to Excel coding sheet (headers green, pattern counts yellow).

count_pattern_matches

Count regex matches in text (case-insensitive).

highlight_pattern_matches

Return up to 3 matched snippets with context for visual inspection.

Active Learning

safe_stratified_split

Stratified train/val split with random fallback when rare classes prevent stratification.

from pubmlp import safe_stratified_split

train_idx, val_idx = safe_stratified_split(X, y, test_size=0.2, random_state=42)

select_query_batch

Select the most uncertain samples for human review.

create_review_batch

Create a review batch DataFrame with model probability and prediction columns.

compare_reviewers

Compute inter-rater agreement (kappa + agreement rate) between model and human.

merge_human_labels

Merge human decisions from review batch back into the main DataFrame.

ALState

Dataclass tracking active learning iteration state.

simulate_al

Offline AL simulation using ground truth labels; model_fn(train_df, unlabeled_df) returns probabilities.

rank_by_hybrid_max_uncertainty

95% max-relevance + 5% uncertainty ranking strategy.

rank_by_hybrid_max_random

95% max-relevance + 5% random ranking strategy.

Stopping Rules

recall_target_test

Statistical stopping test for recall-based screening. Returns stop decision, recall lower bound, and maximum missed relevant records.

should_stop

Evaluate whether screening can stop based on SAFE criterion.

update_stopping_state

Update stopping state counters after a human screening decision.

estimate_recall

Wilson score lower bound estimate of recall.

generate_stopping_report

Generate a summary report of stopping criteria.

calculate_wss

Calculate Work Saved over Sampling at a given recall level.

transition_phase

Advance phase based on screening progress.

StoppingState

Dataclass tracking stopping-rule state across iterations.

Audit

AuditTrail

Record and persist screening decisions for reproducibility.

AuditEntry

Single audit log entry dataclass.

summarize_human_decisions

Summarize human reviewer decisions from an audit trail.

generate_prisma_report

Generate a PRISMA-style flow diagram report.

interpret_kappa

Interpret Cohen’s kappa agreement level.

Utilities

get_device

Return the best available PyTorch device (CUDA or CPU).

auto_batch_size

Suggest a batch size based on available GPU memory.

unpack_batch

Move batch tensors to device and return unpacked components.