diff --git a/README.md b/README.md
index 146a040..d7ec021 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@
 
 ### Experiments
 
-Pour initialiser le fichier `dvc.yaml`, contenant les
+Pour initialiser le fichier `dvc.yaml`, générant les
 [expériences](https://dvc.org/doc/start/experiments), on peut utiliser `dvc exp
 init --interactive`.
 
diff --git a/bin/address-to-area.mjs b/bin/address-to-area.mjs
index 4b60cf7..5f28d13 100755
--- a/bin/address-to-area.mjs
+++ b/bin/address-to-area.mjs
@@ -9,17 +9,16 @@
 import { getParam } from "../libs/params.mjs";
 import { getArea, getMapping, getSpacedMapping } from "../libs/geo.mjs";
 
-/** @type {string} */
-const inputFilePath = await getParam(["prepare", "input"]);
+const [, , inputFilePath] = process.argv;
 console.error({ inputFilePath })
 
 const mapping = await getMapping();
 const spacedMapping = getSpacedMapping(mapping);
 
-const trainingAddresses = (await fs.readFile(inputFilePath, "utf-8"))
+const addresses = (await fs.readFile(inputFilePath, "utf-8"))
     .split("\n");
 
-for (const address of trainingAddresses) {
+for (const address of addresses) {
     const area = getArea(address, mapping, spacedMapping);
     if (Array.isArray(area)) {
         console.error(`${address} => ${area}`);
diff --git a/bin/gather-little-areas.sh b/bin/gather-little-areas.sh
index 337027e..9964bc2 100755
--- a/bin/gather-little-areas.sh
+++ b/bin/gather-little-areas.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-littleAreas=$(wc -l areas/*/addresses.txt | \
+littleAreas=$(wc -l areas/*/addresses-train.txt | \
 grep -E "\s[123]?[0-9] " | \
 cut -d/ -f2)
 
@@ -8,6 +8,6 @@
 
 for area in $littleAreas
 do
-    cat "areas/${area}/addresses.txt" >> areas/GatheredLittleAreas/addresses.txt
+    cat "areas/${area}/addresses-train.txt" >> areas/GatheredLittleAreas/addresses-train.txt
     rm -rf "areas/${area}"
 done
diff --git a/bin/split-addresses.sh b/bin/split-addresses.sh
index 1059711..933dbbe 100755
--- a/bin/split-addresses.sh
+++ b/bin/split-addresses.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-for area in $(cat data/areas.txt)
+for area in $(cat data/areas-train.txt)
 do
-    grep -E "^${area}\s" data/area-address.tsv > "areas/${area}/addresses.txt"
+    grep -E "^${area}\s" data/area-address-train.tsv > "areas/${area}/addresses-train.txt"
 done
diff --git a/data/.gitignore b/data/.gitignore
index 7509b97..07f0325 100644
--- a/data/.gitignore
+++ b/data/.gitignore
@@ -3,3 +3,7 @@
 /addresses-40-cnrs-rnsr-big-classes-train.txt
 /area-address.tsv
 /areas.txt
+/area-address-train.tsv
+/areas-train.txt
+/area-address-test.tsv
+/areas-test.txt
diff --git a/dvc.lock b/dvc.lock
index 4c8338b..9240cdc 100644
--- a/dvc.lock
+++ b/dvc.lock
@@ -50,21 +50,84 @@
   split:
     cmd:
     - rm -rf areas
-    - cat data/areas.txt | sed -e 's|^|areas/|' | xargs mkdir -p
+    - cat data/areas-train.txt | sed -e 's|^|areas/|' | xargs mkdir -p
     - bash bin/split-addresses.sh
     - bash bin/gather-little-areas.sh
     deps:
     - path: bin/gather-little-areas.sh
-      md5: 951f07ec08ce75ba7187f41c570d7cf7
-      size: 287
+      md5: f8363cdb0c36496eac9fcb89f367bffd
+      size: 305
     - path: bin/split-addresses.sh
-      md5: c378294952b517901437b33b2a5cefea
-      size: 142
-    - path: data/areas.txt
+      md5: a673fe80ebde2c236ede30c4ed57ce8c
+      size: 160
+    - path: data/area-address-train.tsv
+      md5: 179a8eb09f2ddf72dd9aa2add136fb87
+      size: 4010846
+    - path: data/areas-train.txt
       md5: 6102ce8099fd61bccb6eb606b66ef260
       size: 964
     outs:
     - path: areas
-      md5: 940c9151775b378b99f7add87531dd82.dir
+      md5: 880febe8c0d19ec9ae40a29f5bf026ba.dir
       size: 4010846
       nfiles: 48
+  prepare@train:
+    cmd: node bin/address-to-area.mjs  "data/addresses-40-cnrs-rnsr-big-classes-train.txt"
+      >  data/area-address-train.tsv
+    deps:
+    - path: bin/address-to-area.mjs
+      md5: 1b7878a5dda36bc9b67b49778aac702a
+      size: 886
+    - 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-train.tsv
+      md5: 179a8eb09f2ddf72dd9aa2add136fb87
+      size: 4010846
+  extract-areas@train:
+    cmd: cat data/area-address-train.tsv| cut -f1 | sort -u > data/areas-train.txt
+    deps:
+    - path: data/area-address-train.tsv
+      md5: 179a8eb09f2ddf72dd9aa2add136fb87
+      size: 4010846
+    outs:
+    - path: data/areas-train.txt
+      md5: 6102ce8099fd61bccb6eb606b66ef260
+      size: 964
+  prepare@test:
+    cmd: node bin/address-to-area.mjs  "data/addresses-40-cnrs-rnsr-big-classes-test.txt"
+      >  data/area-address-test.tsv
+    deps:
+    - path: bin/address-to-area.mjs
+      md5: 1b7878a5dda36bc9b67b49778aac702a
+      size: 886
+    - path: data/addresses-40-cnrs-rnsr-big-classes-test.txt
+      md5: 88402e9e874960f0b6f7eeb8e3c306d4
+      size: 3410283
+    - path: data/netscity-ville-aire-uniq.tsv
+      md5: 85e405b8cc452b953e8dfd12dae5d8d6
+      size: 341275
+    - path: libs/geo.mjs
+      md5: af499b4463e041aeb5f4ca58af486565
+      size: 2443
+    outs:
+    - path: data/area-address-test.tsv
+      md5: 72ff16c01ed5e62d7ec3e2daafc4f257
+      size: 3700326
+  extract-areas@test:
+    cmd: cat data/area-address-test.tsv| cut -f1 | sort -u > data/areas-test.txt
+    deps:
+    - path: data/area-address-test.tsv
+      md5: 72ff16c01ed5e62d7ec3e2daafc4f257
+      size: 3700326
+    outs:
+    - path: data/areas-test.txt
+      md5: b4464b712659fc2b0ebfaece2ba6b695
+      size: 962
diff --git a/dvc.yaml b/dvc.yaml
index a780897..f0ba632 100644
--- a/dvc.yaml
+++ b/dvc.yaml
@@ -1,32 +1,37 @@
 stages:
   prepare:
-    desc: Assign a geographical area to each address
-    cmd: node bin/address-to-area.mjs > data/area-address.tsv
-    deps:
-    - data/addresses-40-cnrs-rnsr-big-classes-train.txt
-    - data/netscity-ville-aire-uniq.tsv
-    - bin/address-to-area.mjs
-    - libs/geo.mjs
-    params:
-    - prepare.input
-    outs:
-    - data/area-address.tsv
+    foreach: ${prepare}
+    do:
+      desc: Assign a geographical area to each address
+      cmd: node bin/address-to-area.mjs  "${item.input}" >  ${item.output}
+      deps:
+      - ${item.input} # - data/addresses-40-cnrs-rnsr-big-classes-${item}.txt
+      - data/netscity-ville-aire-uniq.tsv
+      - bin/address-to-area.mjs
+      - libs/geo.mjs
+      outs:
+      - ${item.output} # data/area-address-${item}.tsv
   extract-areas:
-    desc: Extract geographic areas
-    cmd: cat data/area-address.tsv| cut -f1 | sort -u > data/areas.txt
-    deps:
-    - data/area-address.tsv
-    outs:
-    - data/areas.txt
+    foreach:
+    - train
+    - test
+    do:
+      desc: Extract geographic areas
+      cmd: cat data/area-address-${item}.tsv| cut -f1 | sort -u > data/areas-${item}.txt
+      deps:
+      - data/area-address-${item}.tsv
+      outs:
+      - data/areas-${item}.txt
   split:
     desc: Split the adresses into the tree of areas
     cmd:
     - rm -rf areas
-    - cat data/areas.txt | sed -e 's|^|areas/|' | xargs mkdir -p
+    - cat data/areas-train.txt | sed -e 's|^|areas/|' | xargs mkdir -p
     - bash bin/split-addresses.sh
     - bash bin/gather-little-areas.sh
     deps:
-    - data/areas.txt
+    - data/areas-train.txt
+    - data/area-address-train.tsv
     - bin/split-addresses.sh
     - bin/gather-little-areas.sh
     outs:
diff --git a/params.yaml b/params.yaml
index 2445ce4..baa7042 100644
--- a/params.yaml
+++ b/params.yaml
@@ -1,2 +1,7 @@
 prepare:
-    input: data/addresses-40-cnrs-rnsr-big-classes-train.txt
\ No newline at end of file
+  train:
+    input: data/addresses-40-cnrs-rnsr-big-classes-train.txt
+    output: data/area-address-train.tsv
+  test:
+    input: data/addresses-40-cnrs-rnsr-big-classes-test.txt
+    output: data/area-address-test.tsv