diff --git a/README.md b/README.md
index dd76534..2f38fbf 100644
--- a/README.md
+++ b/README.md
@@ -74,3 +74,8 @@
 Pour initialiser le fichier `dvc.yaml`, contenant les
 [expériences](https://dvc.org/doc/start/experiments), on peut utiliser `dvc exp
 init --interactive`.
+
+Pour lancer le _pipeline_ d'une expérience, il suffit de faire `dvc repro`.
+
+Les fichiers résultats `outs` d'un _stage_ (une étape) sont automatiquement
+ajoutés à DVC.
diff --git a/data/.gitignore b/data/.gitignore
index 9486ee7..1e4d7f1 100644
--- a/data/.gitignore
+++ b/data/.gitignore
@@ -1,3 +1,4 @@
 /netscity-ville-aire-uniq.tsv
 /addresses-40-cnrs-rnsr-big-classes-test.txt
 /addresses-40-cnrs-rnsr-big-classes-train.txt
+/area-address.tsv
diff --git a/dvc.lock b/dvc.lock
new file mode 100644
index 0000000..2bed06a
--- /dev/null
+++ b/dvc.lock
@@ -0,0 +1,22 @@
+schema: '2.0'
+stages:
+  prepare:
+    cmd: node bin/address-to-area.mjs data/addresses-40-cnrs-rnsr-big-classes-train.txt
+      > data/area-address.tsv
+    deps:
+    - path: bin/address-to-area.mjs
+      md5: e2cbb891d128b88e817dcdb83464debb
+      size: 962
+    - path: data/addresses-40-cnrs-rnsr-big-classes-train.txt
+      md5: 612c9731294d230f5fd4ed8c10d67468
+      size: 3694626
+    - path: data/netscity-ville-aire-uniq.tsv
+      md5: 85e405b8cc452b953e8dfd12dae5d8d6
+      size: 341275
+    - path: libs/geo.mjs
+      md5: af499b4463e041aeb5f4ca58af486565
+      size: 2443
+    outs:
+    - path: data/area-address.tsv
+      md5: 179a8eb09f2ddf72dd9aa2add136fb87
+      size: 4010846
diff --git a/dvc.yaml b/dvc.yaml
index 7bd0a92..1ef7a24 100644
--- a/dvc.yaml
+++ b/dvc.yaml
@@ -3,7 +3,7 @@
     cmd: node bin/address-to-area.mjs data/addresses-40-cnrs-rnsr-big-classes-train.txt > data/area-address.tsv
     deps:
     - data/addresses-40-cnrs-rnsr-big-classes-train.txt
-    - data/netscity-ville-aire-uniq
+    - data/netscity-ville-aire-uniq.tsv
     - bin/address-to-area.mjs
     - libs/geo.mjs
     outs: