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https://github.com/wandb/wandb

The AI developer platform. Use Weights & Biases to train and fine-tune models, and manage models from experimentation to production.
https://github.com/wandb/wandb

collaboration data-science data-versioning deep-learning experiment-track hyperparameter-optimization hyperparameter-search hyperparameter-tuning jax keras machine-learning ml-platform mlops model-versioning pytorch reinforcement-learning reproducibility tensorflow

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The AI developer platform. Use Weights & Biases to train and fine-tune models, and manage models from experimentation to production.

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README 

        


  Weights & Biases

  Weights & Biases























Use W&B to build better models faster. Track and visualize all the pieces of your machine learning pipeline, from datasets to production machine learning models. Get started with W&B today, [sign up for a W&B account!](https://wandb.com?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=readme)







Building an LLM app? Track, debug, evaluate, and monitor LLM apps with [Weave](https://wandb.github.io/weave?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=readme), our new suite of tools for GenAI.



 



# Documentation








  

  

  Weights and Biases Experiments








  

  

  Weights and Biases Reports








  

  

  Weights and Biases Artifacts








  

  

  Weights and Biases Tables








  

  

  Weights and Biases Sweeps








  

  

  Weights and Biases Launch








  

  

  Weights and Biases Model Management








  

  

  Weights and Biases Prompts






See the [W&B Developer Guide](https://docs.wandb.ai/?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=documentation) and [API Reference Guide](https://docs.wandb.ai/ref?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=documentation) for a full technical description of the W&B platform.



# Quickstart



Get started with W&B in four steps:



1. First, sign up for a [W&B account](https://wandb.ai/login?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=quickstart).



2. Second, install the W&B SDK with [pip](https://pip.pypa.io/en/stable/). Navigate to your terminal and type the following command:



```bash

pip install wandb

```



3. Third, log into W&B:



```python

wandb.login()

```



4. Use the example code snippet below as a template to integrate W&B to your Python script:



```python

import wandb



# Start a W&B Run with wandb.init

run = wandb.init(project="my_first_project")



# Save model inputs and hyperparameters in a wandb.config object

config = run.config

config.learning_rate = 0.01



# Model training code here ...



# Log metrics over time to visualize performance with wandb.log

for i in range(10):

    run.log({"loss": ...})



# Mark the run as finished, and finish uploading all data

run.finish()

```



That's it! Navigate to the W&B App to view a dashboard of your first W&B Experiment. Use the W&B App to compare multiple experiments in a unified place, dive into the results of a single run, and much more!











Example W&B Dashboard that shows Runs from an Experiment.




 



# Integrations



Use your favorite framework with W&B. W&B integrations make it fast and easy to set up experiment tracking and data versioning inside existing projects. For more information on how to integrate W&B with the framework of your choice, see the [Integrations chapter](https://docs.wandb.ai/guides/integrations) in the W&B Developer Guide.



🔥 PyTorch



Call `.watch` and pass in your PyTorch model to automatically log gradients and store the network topology. Next, use `.log` to track other metrics. The following example demonstrates an example of how to do this:



```python

import wandb



# 1. Start a new run

run = wandb.init(project="gpt4")



# 2. Save model inputs and hyperparameters

config = run.config

config.dropout = 0.01



# 3. Log gradients and model parameters

run.watch(model)

for batch_idx, (data, target) in enumerate(train_loader):

    ...

    if batch_idx % args.log_interval == 0:

        # 4. Log metrics to visualize performance

        run.log({"loss": loss})

```



- Run an example [Google Colab Notebook](http://wandb.me/pytorch-colab).

- Read the [Developer Guide](https://docs.wandb.com/guides/integrations/pytorch?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations) for technical details on how to integrate PyTorch with W&B.

- Explore [W&B Reports](https://app.wandb.ai/wandb/getting-started/reports/Pytorch--VmlldzoyMTEwNzM?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations).



🌊 TensorFlow/Keras

Use W&B Callbacks to automatically save metrics to W&B when you call `model.fit` during training.



The following code example demonstrates how your script might look like when you integrate W&B with Keras:



```python

# This script needs these libraries to be installed:

#   tensorflow, numpy



import wandb

from wandb.keras import WandbMetricsLogger, WandbModelCheckpoint



import random

import numpy as np

import tensorflow as tf



# Start a run, tracking hyperparameters

run = wandb.init(

    # set the wandb project where this run will be logged

    project="my-awesome-project",

    # track hyperparameters and run metadata with wandb.config

    config={

        "layer_1": 512,

        "activation_1": "relu",

        "dropout": random.uniform(0.01, 0.80),

        "layer_2": 10,

        "activation_2": "softmax",

        "optimizer": "sgd",

        "loss": "sparse_categorical_crossentropy",

        "metric": "accuracy",

        "epoch": 8,

        "batch_size": 256,

    },

)



# [optional] use wandb.config as your config

config = run.config



# get the data

mnist = tf.keras.datasets.mnist

(x_train, y_train), (x_test, y_test) = mnist.load_data()

x_train, x_test = x_train / 255.0, x_test / 255.0

x_train, y_train = x_train[::5], y_train[::5]

x_test, y_test = x_test[::20], y_test[::20]

labels = [str(digit) for digit in range(np.max(y_train) + 1)]



# build a model

model = tf.keras.models.Sequential(

    [

        tf.keras.layers.Flatten(input_shape=(28, 28)),

        tf.keras.layers.Dense(config.layer_1, activation=config.activation_1),

        tf.keras.layers.Dropout(config.dropout),

        tf.keras.layers.Dense(config.layer_2, activation=config.activation_2),

    ]

)



# compile the model

model.compile(optimizer=config.optimizer, loss=config.loss, metrics=[config.metric])



# WandbMetricsLogger will log train and validation metrics to wandb

# WandbModelCheckpoint will upload model checkpoints to wandb

history = model.fit(

    x=x_train,

    y=y_train,

    epochs=config.epoch,

    batch_size=config.batch_size,

    validation_data=(x_test, y_test),

    callbacks=[

        WandbMetricsLogger(log_freq=5),

        WandbModelCheckpoint("models"),

    ],

)



# [optional] finish the wandb run, necessary in notebooks

run.finish()

```



Get started integrating your Keras model with W&B today:



- Run an example [Google Colab Notebook](https://wandb.me/intro-keras?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations)

- Read the [Developer Guide](https://docs.wandb.com/guides/integrations/keras?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations) for technical details on how to integrate Keras with W&B.

- Explore [W&B Reports](https://app.wandb.ai/wandb/getting-started/reports/Keras--VmlldzoyMTEwNjQ?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations).



🤗 Hugging Face Transformers



Pass `wandb` to the `report_to` argument when you run a script using a Hugging Face Trainer. W&B will automatically log losses,

evaluation metrics, model topology, and gradients.



**Note**: The environment you run your script in must have `wandb` installed.



The following example demonstrates how to integrate W&B with Hugging Face:



```python

# This script needs these libraries to be installed:

#   numpy, transformers, datasets



import wandb



import os

import numpy as np

from datasets import load_dataset

from transformers import TrainingArguments, Trainer

from transformers import AutoTokenizer, AutoModelForSequenceClassification



def tokenize_function(examples):

    return tokenizer(examples["text"], padding="max_length", truncation=True)



def compute_metrics(eval_pred):

    logits, labels = eval_pred

    predictions = np.argmax(logits, axis=-1)

    return {"accuracy": np.mean(predictions == labels)}



# download prepare the data

dataset = load_dataset("yelp_review_full")

tokenizer = AutoTokenizer.from_pretrained("distilbert-base-uncased")



small_train_dataset = dataset["train"].shuffle(seed=42).select(range(1000))

small_eval_dataset = dataset["test"].shuffle(seed=42).select(range(300))



small_train_dataset = small_train_dataset.map(tokenize_function, batched=True)

small_eval_dataset = small_train_dataset.map(tokenize_function, batched=True)



# download the model

model = AutoModelForSequenceClassification.from_pretrained(

    "distilbert-base-uncased", num_labels=5

)



# set the wandb project where this run will be logged

os.environ["WANDB_PROJECT"] = "my-awesome-project"



# save your trained model checkpoint to wandb

os.environ["WANDB_LOG_MODEL"] = "true"



# turn off watch to log faster

os.environ["WANDB_WATCH"] = "false"



# pass "wandb" to the `report_to` parameter to turn on wandb logging

training_args = TrainingArguments(

    output_dir="models",

    report_to="wandb",

    logging_steps=5,

    per_device_train_batch_size=32,

    per_device_eval_batch_size=32,

    evaluation_strategy="steps",

    eval_steps=20,

    max_steps=100,

    save_steps=100,

)



# define the trainer and start training

trainer = Trainer(

    model=model,

    args=training_args,

    train_dataset=small_train_dataset,

    eval_dataset=small_eval_dataset,

    compute_metrics=compute_metrics,

)

trainer.train()



# [optional] finish the wandb run, necessary in notebooks

wandb.finish()

```



- Run an example [Google Colab Notebook](http://wandb.me/hf?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations).

- Read the [Developer Guide](https://docs.wandb.com/guides/integrations/huggingface?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations) for technical details on how to integrate Hugging Face with W&B.



⚡️ PyTorch Lightning



Build scalable, structured, high-performance PyTorch models with Lightning and log them with W&B.



```python

# This script needs these libraries to be installed:

#   torch, torchvision, pytorch_lightning



import wandb



import os

from torch import optim, nn, utils

from torchvision.datasets import MNIST

from torchvision.transforms import ToTensor



import pytorch_lightning as pl

from pytorch_lightning.loggers import WandbLogger



class LitAutoEncoder(pl.LightningModule):

    def __init__(self, lr=1e-3, inp_size=28, optimizer="Adam"):

        super().__init__()



        self.encoder = nn.Sequential(

            nn.Linear(inp_size * inp_size, 64), nn.ReLU(), nn.Linear(64, 3)

        )

        self.decoder = nn.Sequential(

            nn.Linear(3, 64), nn.ReLU(), nn.Linear(64, inp_size * inp_size)

        )

        self.lr = lr



        # save hyperparameters to self.hparamsm auto-logged by wandb

        self.save_hyperparameters()



    def training_step(self, batch, batch_idx):

        x, y = batch

        x = x.view(x.size(0), -1)

        z = self.encoder(x)

        x_hat = self.decoder(z)

        loss = nn.functional.mse_loss(x_hat, x)



        # log metrics to wandb

        self.log("train_loss", loss)

        return loss



    def configure_optimizers(self):

        optimizer = optim.Adam(self.parameters(), lr=self.lr)

        return optimizer



# init the autoencoder

autoencoder = LitAutoEncoder(lr=1e-3, inp_size=28)



# setup data

batch_size = 32

dataset = MNIST(os.getcwd(), download=True, transform=ToTensor())

train_loader = utils.data.DataLoader(dataset, shuffle=True)



# initialise the wandb logger and name your wandb project

wandb_logger = WandbLogger(project="my-awesome-project")



# add your batch size to the wandb config

wandb_logger.experiment.config["batch_size"] = batch_size



# pass wandb_logger to the Trainer

trainer = pl.Trainer(limit_train_batches=750, max_epochs=5, logger=wandb_logger)



# train the model

trainer.fit(model=autoencoder, train_dataloaders=train_loader)



# [optional] finish the wandb run, necessary in notebooks

wandb.finish()

```



- Run an example [Google Colab Notebook](http://wandb.me/lightning?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations).

- Read the [Developer Guide](https://docs.wandb.ai/guides/integrations/lightning?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations) for technical details on how to integrate PyTorch Lightning with W&B.



💨 XGBoost

Use W&B Callbacks to automatically save metrics to W&B when you call `model.fit` during training.



The following code example demonstrates how your script might look like when you integrate W&B with XGBoost:



```python

# This script needs these libraries to be installed:

#   numpy, xgboost



import wandb

from wandb.xgboost import WandbCallback



import numpy as np

import xgboost as xgb



# setup parameters for xgboost

param = {

    "objective": "multi:softmax",

    "eta": 0.1,

    "max_depth": 6,

    "nthread": 4,

    "num_class": 6,

}



# start a new wandb run to track this script

run = wandb.init(

    # set the wandb project where this run will be logged

    project="my-awesome-project",

    # track hyperparameters and run metadata

    config=param,

)



# download data from wandb Artifacts and prep data

run.use_artifact("wandb/intro/dermatology_data:v0", type="dataset").download(".")

data = np.loadtxt(

    "./dermatology.data",

    delimiter=",",

    converters={33: lambda x: int(x == "?"), 34: lambda x: int(x) - 1},

)

sz = data.shape



train = data[: int(sz[0] * 0.7), :]

test = data[int(sz[0] * 0.7) :, :]



train_X = train[:, :33]

train_Y = train[:, 34]



test_X = test[:, :33]

test_Y = test[:, 34]



xg_train = xgb.DMatrix(train_X, label=train_Y)

xg_test = xgb.DMatrix(test_X, label=test_Y)

watchlist = [(xg_train, "train"), (xg_test, "test")]



# add another config to the wandb run

num_round = 5

run.config["num_round"] = 5

run.config["data_shape"] = sz



# pass WandbCallback to the booster to log its configs and metrics

bst = xgb.train(

    param, xg_train, num_round, evals=watchlist, callbacks=[WandbCallback()]

)



# get prediction

pred = bst.predict(xg_test)

error_rate = np.sum(pred != test_Y) / test_Y.shape[0]



# log your test metric to wandb

run.summary["Error Rate"] = error_rate



# [optional] finish the wandb run, necessary in notebooks

run.finish()

```



- Run an example [Google Colab Notebook](https://wandb.me/xgboost?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations).

- Read the [Developer Guide](https://docs.wandb.ai/guides/integrations/xgboost?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations) for technical details on how to integrate XGBoost with W&B.



🧮 Sci-Kit Learn

Use wandb to visualize and compare your scikit-learn models' performance:



```python

# This script needs these libraries to be installed:

#   numpy, sklearn



import wandb

from wandb.sklearn import plot_precision_recall, plot_feature_importances

from wandb.sklearn import plot_class_proportions, plot_learning_curve, plot_roc



import numpy as np

from sklearn import datasets

from sklearn.ensemble import RandomForestClassifier

from sklearn.model_selection import train_test_split



# load and process data

wbcd = datasets.load_breast_cancer()

feature_names = wbcd.feature_names

labels = wbcd.target_names



test_size = 0.2

X_train, X_test, y_train, y_test = train_test_split(

    wbcd.data, wbcd.target, test_size=test_size

)



# train model

model = RandomForestClassifier()

model.fit(X_train, y_train)

model_params = model.get_params()



# get predictions

y_pred = model.predict(X_test)

y_probas = model.predict_proba(X_test)

importances = model.feature_importances_

indices = np.argsort(importances)[::-1]



# start a new wandb run and add your model hyperparameters

run = wandb.init(project="my-awesome-project", config=model_params)



# Add additional configs to wandb

run.config.update(

    {

        "test_size": test_size,

        "train_len": len(X_train),

        "test_len": len(X_test),

    }

)



# log additional visualisations to wandb

plot_class_proportions(y_train, y_test, labels)

plot_learning_curve(model, X_train, y_train)

plot_roc(y_test, y_probas, labels)

plot_precision_recall(y_test, y_probas, labels)

plot_feature_importances(model)



# [optional] finish the wandb run, necessary in notebooks

run.finish()

```



- Run an example [Google Colab Notebook](https://wandb.me/scikit-colab?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations).

- Read the [Developer Guide](https://docs.wandb.ai/guides/integrations/scikit?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=integrations) for technical details on how to integrate Scikit-Learn with W&B.



 



# W&B Hosting Options



Weights & Biases is available in the cloud or installed on your private infrastructure. Set up a W&B Server in a production environment in one of three ways:



1. [Production Cloud](https://docs.wandb.ai/guides/hosting/hosting-options/self-managed#on-prem-private-cloud?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=hosting): Set up a production deployment on a private cloud in just a few steps using terraform scripts provided by W&B.

2. [Dedicated Cloud](https://docs.wandb.ai/guides/hosting/hosting-options/wb-managed#dedicated-cloud?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=hosting): A managed, dedicated deployment on W&B's single-tenant infrastructure in your choice of cloud region.

3. [On-Prem/Bare Metal](https://docs.wandb.ai/guides/hosting/how-to-guides/bare-metal?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=hosting): W&B supports setting up a production server on most bare metal servers in your on-premise data centers. Quickly get started by running `wandb server` to easily start hosting W&B on your local infrastructure.



See the [Hosting documentation](https://docs.wandb.ai/guides/hosting?utm_source=github&utm_medium=code&utm_campaign=wandb&utm_content=hosting) in the W&B Developer Guide for more information.



 



# Contribution guidelines



Weights & Biases ❤️ open source, and we welcome contributions from the community! See the [Contribution guide](https://github.com/wandb/wandb/blob/main/CONTRIBUTING.md) for more information on the development workflow and the internals of the wandb library. For wandb bugs and feature requests, visit [GitHub Issues](https://github.com/wandb/wandb/issues) or contact [email protected].



 



# W&B Community



Be a part of the growing W&B Community and interact with the W&B team in our [Discord](https://wandb.me/discord). Stay connected with the latest ML updates and tutorials with [W&B Fully Connected](https://wandb.ai/fully-connected).



 



# License



[MIT License](https://github.com/wandb/wandb/blob/main/LICENSE)