{"id":7880,"date":"2023-10-06T15:42:50","date_gmt":"2023-10-06T23:42:50","guid":{"rendered":"https:\/\/live-cometml.pantheonsite.io\/?p=7880"},"modified":"2025-04-24T17:05:36","modified_gmt":"2025-04-24T17:05:36","slug":"dataset-tracking-with-comet-ml-artifacts","status":"publish","type":"post","link":"https:\/\/www.comet.com\/site\/blog\/dataset-tracking-with-comet-ml-artifacts\/","title":{"rendered":"Dataset Tracking with Comet ML Artifacts"},"content":{"rendered":"\n\n\n\n\n
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Photo by UX Indonesia<\/a> on Unsplash<\/a><\/figcaption><\/figure>\n

Projects are often extensive and have intricacies that need to be more intuitive for a single individual to track. It is the same in machine learning and data science projects.<\/p>\n

It is necessary to keep track of many aspects of a given project. A dataset is one of the most important but easily overlooked aspects of a machine learning project. As one engages in feature engineering and data cleaning, it is easy to forget that one needs to keep track of the changes to understand where improvements or declines in performance came from.<\/p>\n

In this article, I intend to show how someone can keep track of changes with Comet ML\u2019s dataset storage feature: Artifacts. Let\u2019s begin.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

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Requirements<\/h2>\n

There are a few requirements that you\u2019ll need to perform the following project. They are:<\/p>\n

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  1. A Comet ML account. You can get one here<\/a>.<\/li>\n
  2. A Python 3.9+ installation.<\/li>\n
  3. An IDE; preferably Visual Studio Code or Jupyter Notebooks.<\/li>\n
  4. The following python libraries: comet_ml, Scikit-learn, and Pandas.<\/li>\n
  5. The passion to learn everything in this article.<\/li>\n<\/ol>\n

    Project<\/h2>\n

    The dataset for my project will be one that might require substantial changes through data cleaning as most real-world datasets would require. This is important as we can monitor multiple changes throughout the lifetime of this given project. It will also mimic the challenges that a real-life project could have.<\/p>\n

    One particularly good dataset that simulates real-life problems in data is the famous Kaggle Titanic Dataset. This dataset is messy, full of noise and has many places that are missing data. It is important to experience such problems as they reflect a lot of the issues that a data practitioner is bound to experience in a business environment. Here<\/a> is the link to the page with both training and test datasets.<\/p>\n

    We first get a snapshot of our data by visually inspecting it and also performing minimal Exploratory Data Analysis<\/a> just to make this article easier to follow through. In a real-life scenario you can expect to do more EDA, but for the sake of simplicity we\u2019ll do just enough to get a sense of the process.<\/p>\n

    import<\/span> pandas as<\/span> pd\nfrom<\/span> sklearn.model_selection import<\/span> train_test_split\n\ndf = pd.read_csv(\"\/train.csv\"<\/span>)\ndf.head()<\/span><\/pre>\n
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    Screenshot by author<\/figcaption>\n<\/figure>\n
    The code written gives the result above. We can see the initial form of our data and what it looks like. We can go further and check if it has any null values and what datatype each column is.<\/p>\n
    #Gives us the datatypes of different features<\/span>\ndf.dtypes<\/span><\/pre>\n
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    \"\"<\/figure>
    <\/picture><\/div>\n
    screenshot by author<\/figcaption>\n<\/figure>\n
    #Gives us the total number of null values per column<\/span>\ndf.isnull().sum<\/span>()<\/span><\/pre>\n
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    Screenshot by author<\/figcaption>\n<\/figure>\n
    Finally, we can have a look at the general scope of the data to understand whether the missing values affect all the data extensively by using the describe()<\/code> method.<\/p>\n
    df.describe()<\/span><\/pre>\n
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    <\/picture><\/div>\n<\/div>\n
    Screenshot by author<\/figcaption>\n<\/figure>\n
    We can see that there are 891 entries in total and the \u201cCabin\u201d column has 687 nulls while the \u201cAge\u201d column has 177. The next step will be performing train-test splits to come up with validation data. After that, we will perform feature engineering in order to come up with the first version of our dataset that will be stored in an Artifact.<\/p>\n
    First Dataset Version<\/h2>\n
    There are a few steps we will follow: We will perform the train-test split first and then we will perform one-hot encoding for categorical features. Finally, we will fill null values in the remaining features with medians.<\/p>\n
    #performing train-test split and one-hot encoding<\/span>\nfrom<\/span> sklearn.model_selection import<\/span> train_test_split\nfrom<\/span> sklearn.compose import<\/span> ColumnTransformer\nfrom<\/span> sklearn.impute import<\/span> SimpleImputer\nfrom<\/span> sklearn.preprocessing import<\/span> OneHotEncoder\nimport<\/span> numpy as<\/span> np\n\n#Dropping two rows where \"Embarked\" has nulls<\/span>\ndf = df.dropna(subset=\"Embarked\"<\/span>)\n\ny = df[\"Survived\"<\/span>]\nX = df.drop(columns=[\"Survived\"<\/span>],  axis=0<\/span>)\n\n\nX_train, X_val, y_train, y_val = train_test_split(X, y, test_size=0.2<\/span>, random_state=0<\/span>)\n\n#Columns needed in transformations<\/span>\ncolumns = [\"PassengerId\"<\/span>,\"Ticket\"<\/span>, \"Name\"<\/span>, \"Cabin\"<\/span>]\ncategorical_columns = [\"Sex\"<\/span>, \"Embarked\"<\/span>]\n\n#Imputing pipeline<\/span>\nimpute_median = SimpleImputer(missing_values=np.nan, strategy='median'<\/span>)\n\n#Transformation pipeline for training and validation data<\/span>\ndf_transformations = [('impute_median'<\/span>, impute_median, [\"Age\"<\/span>]),\n                      ('one-hot-encoder'<\/span>, OneHotEncoder(sparse_output=False<\/span>), categorical_columns),\n                      ('drop'<\/span>, 'drop'<\/span>, columns)]\n\n\ndf_pipeline = ColumnTransformer(df_transformations, remainder='passthrough'<\/span>)\ndf_pipeline.set_output(transform='pandas'<\/span>)\n\n#Transforming X_train and X_val<\/span>\nX_train_transformed = df_pipeline.fit_transform(X_train)\nX_val_transformed = df_pipeline.fit_transform(X_val)<\/span><\/pre>\n
    The above code will give us adequately cleaned data that we can pass through a model for prediction and accuracy. We can check the outcome of the preprocessing by running:<\/p>\n
    X_train_transformed.head<\/span>()<\/span><\/pre>\n
    The result will show that our desired transformations have been successful:<\/p>\n
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    <\/picture><\/div>\n<\/div>\n
    Screenshot by author<\/figcaption>\n<\/figure>\n
    We are now a few steps away from storing our dataset in an Artifact in order to keep track of different versions.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
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    Isolating difficult data samples? Comet can do that. Learn more with our PetCam scenario<\/a> and discover Comet Artifacts.<\/p><\/blockquote>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
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    Training a Model and Making an Artifact<\/h2>\n
    Now that we have our training data and validation data preprocessed, we can use them for training the model and checking for accuracy. We will keep track of the model\u2019s accuracy through a Comet ML experiment that will be directly linked to the Artifact that we will create. All these can be performed in a few steps.<\/p>\n
    from<\/span> sklearn.ensemble import<\/span> RandomForestClassifier\nfrom<\/span> comet_ml import<\/span> Artifact, Experiment\nfrom<\/span> sklearn.metrics import<\/span> mean_squared_error, accuracy_score\n\n#initializing Experiment to track model accuracy<\/span>\nexperiment = Experiment(api_key = \"Personal API key\"<\/span>,\n                        project_name = \"Artifact_Learning\"<\/span>)\n#model to fit and predict<\/span>\nmodel = RandomForestClassifier()\nmodel.fit(X_train_transformed, y_train)\ny_pred = model.predict(X_val_transformed)\nacc = accuracy_score(y_val, y_pred)\n\n#Logging model accuracy <\/span>\nexperiment.log_metric(\"accuracy\"<\/span>, acc)<\/span><\/pre>\n
    The above code will initialize a project called \u201cartifact-learning\u201d on the \u201cProject\u201d page that will have an experiment with your accuracy score as you have decided to log that with the \u201clog_metric()\u201d method. You could log additional details such as hyperparameters if your model has any to keep the work as meticulous as possible.<\/p>\n
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    <\/picture><\/div>\n<\/div>\n
    Screenshot by author<\/figcaption>\n<\/figure>\n
    Our project named \u201cartifact-learning\u201d will appear as seen above. On opening it, we will see the page below:<\/p>\n
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    <\/picture><\/div>\n<\/div>\n
    Screenshot by author<\/figcaption>\n<\/figure>\n
    After clicking \u201cphilosophical_title_9572\u201d (the randomized name of our experiment), we will see the following page:<\/p>\n
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    Screenshot by author<\/figcaption>\n<\/figure>\n
    Here we can see everything important that we would require such as hyperparameters, metrics and even the system metrics. Additionally, we can see that the accuracy we were looking for had been successfully logged.<\/p>\n
    We then combine our \u201cX_train_transformed\u201d data with the corresponding \u201cy_train\u201d data in order to have a complete dataset that has all the nuanced information we will require in future.<\/p>\n
    #recombining the dataset<\/span>\nX_train_transformed[\"Survived\"<\/span>] = y_train\nprint<\/span>(X_train_transformed.head())<\/span><\/pre>\n
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    <\/picture><\/div>\n<\/div>\n
    Screenshot by author<\/figcaption>\n<\/figure>\n
    The screenshot shows our added column at the bottom named \u201cSurvived.\u201d<\/p>\n
    We then make this into a csv file that will be uploaded to the \u201cArtifact\u201d page as the first version.<\/p>\n
    #Making csv file<\/span>\nX_train_transformed.to_csv(\"Desired path in local computer\"<\/span>)\n\n#Naming Artifact and adding csv file<\/span>\nartifact = Artifact(name=\"Titanic_data\"<\/span>,artifact_type=\"dataset\"<\/span>)\nartifact.add(\"Location where csv was stored\"<\/span>)\n\nexperiment.log_artifact(artifact)\n\n#End experiment <\/span>\nexperiment.end()<\/span><\/pre>\n
    After receiving a message that indicates success, you can now go to your Comet homepage where the Artifact is found.<\/p>\n
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    <\/picture><\/div>\n<\/div>\n
    Screenshot by author<\/figcaption>\n<\/figure>\n
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    <\/picture><\/div>\n<\/div>\n
    Screenshot by author<\/figcaption>\n<\/figure>\n
    We can inspect that dataset to see if it has the data we seek and if every operation has been successful.<\/p>\n
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    \"\"<\/figure>
    <\/picture><\/div>\n<\/div>\n
    Screenshot by author<\/figcaption>\n<\/figure>\n
    On performing a quick check, you can see that all the columns and data are available as we desire.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
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    Wrap Up<\/h2>\n
    In this article, we have successfully demonstrated that developing a dataset for a model could be additionally systematic and orderly. Here, we have been able to keep track of the model performance on a given dataset version that we also kept track of. Comet offers practitioners the opportunity to automatically and programmatically keep track of datasets which reduces the need to manually perform tasks and ensures higher efficiency.<\/p>\n
    Performing an iterative process using the same methods employed here will keep a data practitioner up to date with the exact steps they performed to arrive at certain conclusions and performance as every important step will be documented and stored in Comet ML\u2019s workspace.<\/p>\n
    In a business setting, it\u2019s crucial to keep a meticulous record of the datasets one has. Versioning these datasets according to the changes that have been made along the way ensures that increments in the improvement of predictive models become easily traceable. Comet Artifacts make model versioning easy and the visual interface one can access through Comet\u2019s website is unparalleled in its ease of use and navigation.<\/p>\n
    Good luck with your next project with Comet ML!<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
    Photo by UX Indonesia on Unsplash Projects are often extensive and have intricacies that need to be more intuitive for a single individual to track. It is the same in machine learning and data science projects. It is necessary to keep track of many aspects of a given project. A dataset is one of the […]<\/p>\n","protected":false},"author":79,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"customer_name":"","customer_description":"","customer_industry":"","customer_technologies":"","customer_logo":"","footnotes":""},"categories":[9,7],"tags":[],"coauthors":[176],"class_list":["post-7880","post","type-post","status-publish","format-standard","hentry","category-product","category-tutorials"],"yoast_head":"\nDataset Tracking with Comet ML Artifacts - Comet<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.comet.com\/site\/blog\/dataset-tracking-with-comet-ml-artifacts\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dataset Tracking with Comet ML Artifacts\" \/>\n<meta property=\"og:description\" content=\"Photo by UX Indonesia on Unsplash Projects are often extensive and have intricacies that need to be more intuitive for a single individual to track. 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