diff --git a/advanced/databases/atvskeystroke/5.json b/advanced/databases/atvskeystroke/5.json
new file mode 100644
index 0000000000000000000000000000000000000000..3940cb4c1731d4d8dea2e9cce7feb6ca22b0b62c
--- /dev/null
+++ b/advanced/databases/atvskeystroke/5.json
@@ -0,0 +1,25 @@
+{
+ "description": "The ATVS Keystroke database",
+ "root_folder": "/idiap/group/biometric/databases/atvs_keystroke",
+ "protocols": [
+ {
+ "name": "A",
+ "template": "simple_keystroke_recognition/1",
+ "views": {
+ "templates": {
+ "view": "Templates",
+ "parameters": {
+ "protocol": "A"
+ }
+ },
+ "probes": {
+ "view": "Probes",
+ "parameters": {
+ "protocol": "A"
+ }
+ }
+ }
+ }
+ ],
+ "schema_version": 2
+}
\ No newline at end of file
diff --git a/advanced/databases/atvskeystroke/5.py b/advanced/databases/atvskeystroke/5.py
new file mode 100644
index 0000000000000000000000000000000000000000..c9a4339c709e4ff62a24aa8b510b5cc49c9b9805
--- /dev/null
+++ b/advanced/databases/atvskeystroke/5.py
@@ -0,0 +1,266 @@
+###############################################################################
+# #
+# Copyright (c) 2018 Idiap Research Institute, http://www.idiap.ch/ #
+# Contact: beat.support@idiap.ch #
+# #
+# This file is part of the beat.examples module of the BEAT platform. #
+# #
+# Commercial License Usage #
+# Licensees holding valid commercial BEAT licenses may use this file in #
+# accordance with the terms contained in a written agreement between you #
+# and Idiap. For further information contact tto@idiap.ch #
+# #
+# Alternatively, this file may be used under the terms of the GNU Affero #
+# Public License version 3 as published by the Free Software and appearing #
+# in the file LICENSE.AGPL included in the packaging of this file. #
+# The BEAT platform is distributed in the hope that it will be useful, but #
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY #
+# or FITNESS FOR A PARTICULAR PURPOSE. #
+# #
+# You should have received a copy of the GNU Affero Public License along #
+# with the BEAT platform. If not, see http://www.gnu.org/licenses/. #
+# #
+###############################################################################
+
+import numpy as np
+from collections import namedtuple
+
+from beat.backend.python.database import View
+
+import bob.db.atvskeystroke
+
+
+keystroke_feature = ['', 'holdtime', 'rplatency', 'pplatency', 'rrlatency', 'prlatency']
+keystroke_type = ['', 'given_name', 'family_name', 'email', 'nationality', 'id_number']
+
+
+#----------------------------------------------------------
+
+
+def keystroke_reader(filename):
+ counter = 0
+ feat = 0
+
+ data = {}
+ for line in open(filename, 'r').readlines():
+ if not line.strip(): continue
+ if counter % 6 == 0:
+ feat += 1
+ label = line.strip()
+ data[keystroke_feature[feat]] = {}
+ else:
+ values = [np.int32(v) for v in line.strip().split(' ')]
+ data[keystroke_feature[feat]][keystroke_type[counter % 6]] = np.array(values)
+ counter += 1
+
+ return data
+
+
+#----------------------------------------------------------
+
+
+class Templates(View):
+ """Outputs:
+ - keystroke: "{{ user.username }}/atvs_keystroke/1
+ - file_id: "{{ system_user.username }}/uint64/1"
+ - template_id: "{{ system_user.username }}/text/1"
+ - client_id: "{{ system_user.username }}/text/1"
+
+ One "file_id" is associated with a given "keystroke".
+ Several "keystroke" are associated with a given "template_id".
+ Several "template_id" are associated with a given "client_id".
+
+ --------------- --------------- --------------- --------------- --------------- ---------------
+ | keystroke | | keystroke | | keystroke | | keystroke | | keystroke | | keystroke |
+ --------------- --------------- --------------- --------------- --------------- ---------------
+ --------------- --------------- --------------- --------------- --------------- ---------------
+ | file_id | | file_id | | file_id | | file_id | | file_id | | file_id |
+ --------------- --------------- --------------- --------------- --------------- ---------------
+ ----------------------------------------------- -----------------------------------------------
+ | template_id | | template_id |
+ ----------------------------------------------- -----------------------------------------------
+ -----------------------------------------------------------------------------------------------
+ | client_id |
+ -----------------------------------------------------------------------------------------------
+
+ Note: for this particular database, there is only one "template_id"
+ per "client_id".
+ """
+
+ def index(self, root_folder, parameters):
+ Entry = namedtuple('Entry', ['client_id', 'template_id', 'file_id', 'keystroke'])
+
+ # Open the database and load the objects to provide via the outputs
+ db = bob.db.atvskeystroke.Database()
+
+ template_ids = db.model_ids(groups='eval',
+ protocol=parameters['protocol'])
+
+ entries = []
+
+ for template_id in template_ids:
+ objs = db.objects(groups='eval',
+ protocol=parameters['protocol'],
+ purposes='enrol',
+ model_ids=[template_id])
+
+ entries.extend([ Entry(x.client_id, template_id, x.id, x.make_path(root_folder, '.txt'))
+ for x in objs ])
+
+ return sorted(entries, key=lambda x: (x.client_id, x.template_id, x.file_id))
+
+
+ def get(self, output, index):
+ obj = self.objs[index]
+
+ if output == 'client_id':
+ return {
+ 'text': str(obj.client_id)
+ }
+
+ elif output == 'template_id':
+ return {
+ 'text': str(obj.template_id)
+ }
+
+ elif output == 'file_id':
+ return {
+ 'value': np.uint64(obj.file_id)
+ }
+
+ elif output == 'keystroke':
+ return keystroke_reader(obj.keystroke)
+
+
+#----------------------------------------------------------
+
+
+class Probes(View):
+ """Outputs:
+ - keystroke: "{{ user.username }}/atvs_keystroke/1
+ - file_id: "{{ system_user.username }}/uint64/1"
+ - client_id: "{{ system_user.username }}/text/1"
+ - probe_id: "{{ system_user.username }}/uint64/1",
+ - template_ids: "{{ system_user.username }}/array_1d_text/1",
+
+ One "file_id" is associated with a given "keystroke".
+ One "probe_id" is associated with a given "keystroke".
+ Several "keystroke" are associated with a given "client_id".
+ Several "client_id" are associated with a given "template_ids".
+
+ --------------- --------------- --------------- --------------- --------------- ---------------
+ | keystroke | | keystroke | | keystroke | | keystroke | | keystroke | | keystroke |
+ --------------- --------------- --------------- --------------- --------------- ---------------
+ --------------- --------------- --------------- --------------- --------------- ---------------
+ | file_id | | file_id | | file_id | | file_id | | file_id | | file_id |
+ --------------- --------------- --------------- --------------- --------------- ---------------
+ --------------- --------------- --------------- --------------- --------------- ---------------
+ | probe_id | | probe_id | | probe_id | | probe_id | | probe_id | | probe_id |
+ --------------- --------------- --------------- --------------- --------------- ---------------
+ ----------------------------------------------- -----------------------------------------------
+ | client_id | | client_id |
+ ----------------------------------------------- -----------------------------------------------
+ -----------------------------------------------------------------------------------------------
+ | template_ids |
+ -----------------------------------------------------------------------------------------------
+ """
+
+ def index(self, root_folder, parameters):
+ Entry = namedtuple('Entry', ['template_ids', 'client_id', 'probe_id', 'file_id',
+ 'keystroke'])
+
+ # Open the database and load the objects to provide via the outputs
+ db = bob.db.atvskeystroke.Database()
+
+ template_ids = sorted(db.model_ids(protocol=parameters['protocol'],
+ groups='eval'),
+ key=lambda x: int(x))
+
+ template_probes = {}
+ for template_id in template_ids:
+ objs = sorted(db.objects(protocol=parameters['protocol'],
+ groups='eval',
+ purposes='probe',
+ model_ids=[template_id]),
+ key=lambda x: (x.client_id, x.id))
+
+ template_probes[template_id] = [ p.id for p in objs ]
+
+
+ objs = sorted(db.objects(protocol=parameters['protocol'],
+ groups='eval',
+ purposes='probe'),
+ key=lambda x: (x.client_id, x.id))
+
+ entries = []
+ for obj in objs:
+ templates = [ template_id for template_id in template_ids
+ if obj.id in template_probes[template_id] ]
+ entries.append( Entry(templates, obj.client_id, obj.id, obj.id,
+ obj.make_path(root_folder, '.txt')) )
+
+ return sorted(entries, key=lambda x: (len(x.template_ids), x.template_ids,
+ x.client_id, x.probe_id))
+
+
+ def get(self, output, index):
+ obj = self.objs[index]
+
+ if output == 'template_ids':
+ return {
+ 'text': [ str(x) for x in obj.template_ids ]
+ }
+
+ elif output == 'client_id':
+ return {
+ 'text': str(obj.client_id)
+ }
+
+ elif output == 'probe_id':
+ return {
+ 'value': np.uint64(obj.probe_id)
+ }
+
+ elif output == 'file_id':
+ return {
+ 'value': np.uint64(obj.file_id)
+ }
+
+ elif output == 'keystroke':
+ return keystroke_reader(obj.keystroke)
+
+
+#----------------------------------------------------------
+
+
+def setup_tests():
+ # Install a mock load function for the keystrokes
+ def mock_keystroke_reader(filename):
+ return {}
+
+ global keystroke_reader
+ keystroke_reader = mock_keystroke_reader
+
+
+#----------------------------------------------------------
+
+
+# Test the behavior of the views (on fake data)
+if __name__ == '__main__':
+
+ setup_tests()
+
+ view = Templates()
+ view.objs = view.index(root_folder='', parameters=dict(protocol = 'A'))
+ view.get('client_id', 0)
+ view.get('template_id', 0)
+ view.get('file_id', 0)
+ view.get('keystroke', 0)
+
+ view = Probes()
+ view.objs = view.index(root_folder='', parameters=dict(protocol = 'A'))
+ view.get('template_ids', 0)
+ view.get('client_id', 0)
+ view.get('probe_id', 0)
+ view.get('file_id', 0)
+ view.get('keystroke', 0)
diff --git a/advanced/databases/atvskeystroke/5.rst b/advanced/databases/atvskeystroke/5.rst
new file mode 100644
index 0000000000000000000000000000000000000000..fe80803c56815cce01c171354aef3128d9ba732d
--- /dev/null
+++ b/advanced/databases/atvskeystroke/5.rst
@@ -0,0 +1 @@
+The ATVS Keystroke database
\ No newline at end of file