diff --git a/.dvc/.gitignore b/.dvc/.gitignore
new file mode 100644
index 00000000..528f30c7
--- /dev/null
+++ b/.dvc/.gitignore
@@ -0,0 +1,3 @@
+/config.local
+/tmp
+/cache
diff --git a/.dvc/config b/.dvc/config
new file mode 100644
index 00000000..e69de29b
diff --git a/.dvc/plots/confusion.json b/.dvc/plots/confusion.json
new file mode 100644
index 00000000..0d9a3336
--- /dev/null
+++ b/.dvc/plots/confusion.json
@@ -0,0 +1,30 @@
+{
+    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
+    "data": {
+        "values": "<DVC_METRIC_DATA>"
+    },
+    "title": "<DVC_METRIC_TITLE>",
+    "mark": "rect",
+    "encoding": {
+        "x": {
+            "field": "<DVC_METRIC_X>",
+            "type": "nominal",
+            "sort": "ascending",
+            "title": "<DVC_METRIC_X_LABEL>"
+        },
+        "y": {
+            "field": "<DVC_METRIC_Y>",
+            "type": "nominal",
+            "sort": "ascending",
+            "title": "<DVC_METRIC_Y_LABEL>"
+        },
+        "color": {
+            "aggregate": "count",
+            "type": "quantitative"
+        },
+        "facet": {
+            "field": "rev",
+            "type": "nominal"
+        }
+    }
+}
diff --git a/.dvc/plots/default.json b/.dvc/plots/default.json
new file mode 100644
index 00000000..d00782a8
--- /dev/null
+++ b/.dvc/plots/default.json
@@ -0,0 +1,29 @@
+{
+    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
+    "data": {
+        "values": "<DVC_METRIC_DATA>"
+    },
+    "title": "<DVC_METRIC_TITLE>",
+    "mark": {
+        "type": "line"
+    },
+    "encoding": {
+        "x": {
+            "field": "<DVC_METRIC_X>",
+            "type": "quantitative",
+            "title": "<DVC_METRIC_X_LABEL>"
+        },
+        "y": {
+            "field": "<DVC_METRIC_Y>",
+            "type": "quantitative",
+            "title": "<DVC_METRIC_Y_LABEL>",
+            "scale": {
+                "zero": false
+            }
+        },
+        "color": {
+            "field": "rev",
+            "type": "nominal"
+        }
+    }
+}
diff --git a/.dvc/plots/scatter.json b/.dvc/plots/scatter.json
new file mode 100644
index 00000000..90165d4c
--- /dev/null
+++ b/.dvc/plots/scatter.json
@@ -0,0 +1,27 @@
+{
+    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
+    "data": {
+        "values": "<DVC_METRIC_DATA>"
+    },
+    "title": "<DVC_METRIC_TITLE>",
+    "mark": "point",
+    "encoding": {
+        "x": {
+            "field": "<DVC_METRIC_X>",
+            "type": "quantitative",
+            "title": "<DVC_METRIC_X_LABEL>"
+        },
+        "y": {
+            "field": "<DVC_METRIC_Y>",
+            "type": "quantitative",
+            "title": "<DVC_METRIC_Y_LABEL>",
+            "scale": {
+                "zero": false
+            }
+        },
+        "color": {
+            "field": "rev",
+            "type": "nominal"
+        }
+    }
+}
diff --git a/.dvc/plots/smooth.json b/.dvc/plots/smooth.json
new file mode 100644
index 00000000..d497ce75
--- /dev/null
+++ b/.dvc/plots/smooth.json
@@ -0,0 +1,39 @@
+{
+    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
+    "data": {
+        "values": "<DVC_METRIC_DATA>"
+    },
+    "title": "<DVC_METRIC_TITLE>",
+    "mark": {
+        "type": "line"
+    },
+    "encoding": {
+        "x": {
+            "field": "<DVC_METRIC_X>",
+            "type": "quantitative",
+            "title": "<DVC_METRIC_X_LABEL>"
+        },
+        "y": {
+            "field": "<DVC_METRIC_Y>",
+            "type": "quantitative",
+            "title": "<DVC_METRIC_Y_LABEL>",
+            "scale": {
+                "zero": false
+            }
+        },
+        "color": {
+            "field": "rev",
+            "type": "nominal"
+        }
+    },
+    "transform": [
+        {
+            "loess": "<DVC_METRIC_Y>",
+            "on": "<DVC_METRIC_X>",
+            "groupby": [
+                "rev"
+            ],
+            "bandwidth": 0.3
+        }
+    ]
+}
diff --git a/.dvcignore b/.dvcignore
new file mode 100644
index 00000000..51973055
--- /dev/null
+++ b/.dvcignore
@@ -0,0 +1,3 @@
+# Add patterns of files dvc should ignore, which could improve
+# the performance. Learn more at
+# https://dvc.org/doc/user-guide/dvcignore