feat: Implement cross_validate functionality

examples/basic_usage.ipynb

@@ -631,13 +631,39 @@
    "cell_type": "markdown",
    "id": "57",
    "metadata": {},
+   "source": [
+    "---\n",
+    "## Cross-validation with skore"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "58",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from sklearn import datasets, linear_model\n",
+    "from skore.cross_validate import cross_validate\n",
+    "diabetes = datasets.load_diabetes()\n",
+    "X = diabetes.data[:150]\n",
+    "y = diabetes.target[:150]\n",
+    "lasso = linear_model.Lasso()\n",
+    "\n",
+    "cv_results = cross_validate(lasso, X, y, cv=3, project=project)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "59",
+   "metadata": {},
    "source": [
     "_Stay tuned for some new features!_"
    ]
   },
   {
    "cell_type": "markdown",
-   "id": "58",
+   "id": "60",
    "metadata": {},
    "source": [
     "---\n",
@@ -649,7 +675,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "59",
+   "id": "61",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -662,7 +688,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "60",
+   "id": "62",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -675,7 +701,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "61",
+   "id": "63",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -687,7 +713,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "62",
+   "id": "64",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -700,7 +726,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "63",
+   "id": "65",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -713,7 +739,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "64",
+   "id": "66",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -726,7 +752,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "65",
+   "id": "67",
    "metadata": {},
    "outputs": [],
    "source": []

examples/basic_usage.py

@@ -303,6 +303,20 @@ def my_func(x):
 
 project.put("my_fitted_pipeline", my_pipeline)
 
+# %% [markdown]
+# ---
+# ## Cross-validation with skore
+
+# %%
+from sklearn import datasets, linear_model
+from skore.cross_validate import cross_validate
+diabetes = datasets.load_diabetes()
+X = diabetes.data[:150]
+y = diabetes.target[:150]
+lasso = linear_model.Lasso()
+
+cv_results = cross_validate(lasso, X, y, cv=3, project=project)
+
 # %% [markdown]
 # _Stay tuned for some new features!_
 

skore-ui/src/components/VegaWidget.vue

@@ -1,8 +1,8 @@
 <script setup lang="ts">
-import { isUserInDarkMode } from "@/services/utils";
+import { isDeepEqual, isUserInDarkMode } from "@/services/utils";
 import { View as VegaView } from "vega";
 import embed, { type Config, type VisualizationSpec } from "vega-embed";
-import { onBeforeUnmount, onMounted, ref } from "vue";
+import { onBeforeUnmount, onMounted, ref, watch } from "vue";
 
 const props = defineProps<{ spec: VisualizationSpec }>();
 
@@ -49,6 +49,30 @@ onBeforeUnmount(() => {
     vegaView.finalize();
   }
 });
+
+watch(
+  () => props.spec,
+  async (newSpec, oldSpec) => {
+    if (isDeepEqual(newSpec, oldSpec)) {
+      return;
+    }
+    // Refresh view
+    // TODO: This perhaps could be done in a more fine-grained way
+    const r = await embed(
+      container.value!,
+      {
+        width: container.value?.clientWidth || 0,
+        ...newSpec,
+      },
+      {
+        theme: isUserInDarkMode() ? "dark" : undefined,
+        config: vegaConfig,
+        actions: false,
+      }
+    );
+    vegaView = r.view;
+  }
+);
 </script>
 
 <template>

skore/pyproject.toml

@@ -9,6 +9,7 @@ dynamic = [
 requires-python = ">=3.9, <3.13"
 maintainers = [{name = "skore developers", email="skore@signal.probabl.ai"}]
 dependencies = [
+  "altair>=5,<6",
   "diskcache",
   "fastapi",
   "rich",
@@ -61,7 +62,6 @@ artifacts = ["src/skore/ui/static/"]
 
 [project.optional-dependencies]
 test = [
-  "altair",
   "httpx",
   "matplotlib",
   "pandas",

skore/src/skore/__init__.py

@@ -4,11 +4,13 @@
 
 import rich.logging
 
+from skore.cross_validate import cross_validate
 from skore.project import Project, load
 
 from .utils._show_versions import show_versions
 
 __all__ = [
+    "cross_validate",
     "load",
     "show_versions",
     "Project",