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206 lines
12 KiB
Markdown
206 lines
12 KiB
Markdown
---
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title: Comparing Tasks
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---
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The ClearML Web UI provides features for comparing tasks, allowing to locate, visualize, and analyze the
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differences in task results and their causes. You can view the differences in:
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* [Details](#side-by-side-textual-comparison) - Compare task source code, package versions, models, configuration
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objects, and other details.
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* Hyperparameters
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* [Values](#side-by-side-textual-comparison) - Compare parameters and their values
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* [Parallel coordinates](#parallel-coordinates-mode) - View the impact of hyperparameters on selected metrics
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* [Scatter plot](#scatter-plot) - View the correlation between a selected hyperparameter and metric
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* Scalars - Compare task metrics:
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* [Values](#tabular-scalar-comparison) - Compare minimal, maximal or last reported values in a concise comparison
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table
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* [Graphs](#plot-comparison) - Overlay compared tasks in a single graph per metric
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* [Plots](#plot-comparison) - Compare task plots
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* [Debug samples](#side-by-side-debug-sample-comparison) - Compare debug samples by iteration
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With these comparisons, you can investigate the impact of different setups on your task results, and gain insight
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for crafting future tasks.
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## Selecting Tasks to Compare
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To select tasks to compare:
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1. Go to a task table that includes the tasks to be compared.
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1. Select the tasks to compare. Once multiple tasks are selected, the batch action bar appears.
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1. In the batch action bar, click **COMPARE**.
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The comparison page opens in the **DETAILS** tab with the tasks [compared side by side](#side-by-side-textual-comparison).
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### Modifying Task Selection
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Click the `TASKS` button to view your currently compared tasks. Click `X` on a listed task to remove
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it from the comparison.
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You can add/remove tasks to your comparison:
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1. Click the `+` button in any of the comparison tabs. This opens up a window with a task table with the currently
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compared tasks at the top.
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1. Find the tasks to add by sorting and [filtering](webapp_exp_table.md#filtering-columns) the tasks with the
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appropriate column header controls. Alternatively, use the search bar to find tasks by name.
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1. Select tasks to include in the comparison (and/or clear the selection of any tasks you wish to remove).
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1. Click **APPLY**.
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## Sharing Comparison Page
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To share a comparison page, copy the full URL from the address bar and send it to a teammate to collaborate. They will
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get the exact same page (including selected tabs etc.).
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## Embedding Comparison Visualization
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To embed plots and debug samples from the comparison pages in your [Reports](webapp_reports.md), hover over the
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resource and click <img src="/docs/latest/icons/ico-plotly-embed-code.svg" alt="Embed code" className="icon size-md space-sm" />,
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which will copy to clipboard the embed code to put in your Reports. These visualizations are updated live as the
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tasks update. The Enterprise Plan and Hosted Service support embedding resources in external tools (e.g. Notion).
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## Comparison Modes
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The comparison pages provide the following views:
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* [Side-by-side textual comparison](#side-by-side-textual-comparison)
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* [Tabular scalar comparison](#tabular-scalar-comparison)
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* [Parallel coordinates](#parallel-coordinates-mode) for parameter impact on metric
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* [Scatter plot](#scatter-plot)
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* [Overlaid plot comparison](#plot-comparison)
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* Side-by-side [debug sample](#side-by-side-debug-sample-comparison) and [plot](#plot-comparison) comparison
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### Side-by-side Textual Comparison
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In the **Details** and **Hyperparameters** (Values view) tabs, you can view differences in the tasks' parameters' nominal
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values. The **Details** tab displays the tasks' execution details (source code, uncommitted changes, Python packages),
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models, artifacts, configuration objects, and additional general information. **Hyperparameters** (Values view) displays the
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tasks' hyperparameter and their values.
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The tasks are laid out in vertical cards, so each field is lined up side-by-side. The task on the
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left is used as the base task, to which the other tasks are compared. You can set a new base task in
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one of the following ways:
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* Hover and click <img src="/docs/latest/icons/ico-arrow-from-right.svg" alt="Switch base task" className="icon size-md space-sm" /> on the task that will be the new base.
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* Hover and click <img src="/docs/latest/icons/ico-drag.svg" alt="Pan" className="icon size-md space-sm" /> on the new base task and drag it all the way to the left
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The differences between the tasks are highlighted. Easily locate
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value differences by clicking click <img src="/docs/latest/icons/ico-previous-diff.svg" alt="Up arrow" className="icon size-md" />
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(previous diff) or <img src="/docs/latest/icons/ico-next-diff.svg" alt="Down arrow" className="icon size-md space-sm" /> (next diff)
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in the tab header. Obscure identical fields by switching on the **Hide Identical Fields** toggle.
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Use the search bar to find any field names or values. Lines that match the search query are highlighted, and you can
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navigate between search results.
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### Tabular Scalar Comparison
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The **Scalars** tab **Values** view lays out the tasks' metric values in a table: a row per metric/variant and a
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column for each task. Select from the dropdown menu which metric values to display:
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* Last Values: The last reported values for each task
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* Min Values: The minimal value reported throughout the task execution
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* Max Values: The maximal value reported throughout the task execution
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You can download the scalar comparison table as a CSV file by clicking <img src="/docs/latest/icons/ico-download.svg" alt="Download" className="icon size-md space-sm" />.
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Switch on the **Show row extremes** toggle to highlight each variant's maximum and minimum values.
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### Parallel Coordinates Mode
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The **Hyperparameters** tab's **Parallel Coordinates** comparison shows tasks' hyperparameter impact on specified
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metrics:
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1. Under **Performance Metrics**, select metrics to compare for
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1. Select the values to use for each metric in the plot (can select multiple):
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* LAST - The final value, or the most recent value, for currently running tasks
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* MIN - Minimal value
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* MAX - Maximal value
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1. In **Parameters**, select the hyperparameters to compare.
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For example, plot the metric/variant `accuracy`/`total` against the hyperparameters
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`base_lr`, `dropout`, and `number_of_epochs`.
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To focus on a specific task, hover over its name in the graph legend.
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To hide a task, click its name in the graph legend (click again to bring back).
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### Scatter Plot
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The **Hyperparameters** tab's **Scatter Plot** comparison shows tasks' correlation between a selected
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hyperparameter and metric.
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To show the value distribution:
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* Select the **Plot Axes**:
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1. Under Y-axis select the metric and the metric values to use in the plot:
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* **LAST** - The final value, or the most recent value, for currently running tasks
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* **MIN** - Minimal value
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* **MAX** - Maximal value
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1. Under X-axis select the hyperparameter.
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Hovering over each datapoint in the resulting plot will show the task name and the metric and parameter value for that
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point. You can add additional metrics and hyperparameters values to the datapoint tooltip through **ADDITIONAL DATA POINT INFORMATION**.
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### Plot Comparison
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The **Scalars** (Graph view) and **Plots** tabs compare tasks' plots.
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The **Scalars** tab displays scalar values as time series line charts. The **Plots** tab compares the last reported
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iteration sample of each metric/variant combination per compared task.
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Line, scatter, box, and bar graphs are compared by overlaying each metric/variant from all compared tasks' into a single
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comparative plot.
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For overlaid plots, use **Group by** to select how to group plots:
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* **Metric** - All variants for a metric appear on the same plot.
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* **Metric+Variant** (default) - Every variant appears on its own plot.
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Other plot types that are not overlaid are displayed separately for each task:
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All single value scalars are plotted into a single clustered bar chart under the "Summary" title, where each cluster
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represents a reported metric, and each bar in the cluster represents a task.
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Hover over plots to access plot controls (see [Scalar Plot Tools](webapp_exp_track_visual.md#scalar-plot-tools)).
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### Side-by-side Debug Sample Comparison
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Compare debug samples at different iterations to examine how your tasks perform throughout their execution.
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You can view debug samples by metric in the reported iterations. Filter the samples by metric
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by selecting a metric from the dropdown menu above the samples. The most recent iteration appears first. To navigate
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between iterations, click <img src="/docs/latest/icons/ico-circle-older.svg" alt="Left arrow" className="icon size-md space-sm" /> (older images),
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<img src="/docs/latest/icons/ico-circle-newer.svg" alt="Right arrow" className="icon size-md space-sm" /> (newer images),
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or <img src="/docs/latest/icons/ico-circle-newest.svg" alt="right arrow, newest image" className="icon size-md space-sm" /> (newest images).
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Click <img src="/docs/latest/icons/ico-disconnect.svg" alt="Sync selection" className="icon size-md space-sm" /> in order
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to synchronize iteration and metric selection across tasks. For example, if you select a metric for one
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task's debug samples, the same metric will be automatically selected for the rest of the tasks in the
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comparison.
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Open a debug sample (image, audio, or video) in the viewer or player, by clicking the thumbnail.
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To move to the same sample in another iteration, click <img src="/docs/latest/icons/ico-previous.svg" alt="Left arrow" className="icon size-md space-sm" />
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(previous), <img src="/docs/latest/icons/ico-next.svg" alt="Right arrow" className="icon size-md space-sm" /> (next), or move the slider.
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