diff --git a/hyppopy/CandidateDescriptor.py b/hyppopy/CandidateDescriptor.py
index e69de29..a117492 100644
--- a/hyppopy/CandidateDescriptor.py
+++ b/hyppopy/CandidateDescriptor.py
@@ -0,0 +1,59 @@
+class CandidateDescriptor(object):
+    """
+    Descriptor that defines an candidate the solver wants to be checked.
+    It is used to lable/identify the candidates and their results in the case of batch processing.
+    """
+
+    def __init__(self, **definingValues):
+        """
+        @param definingValues Class assumes that all variables passed to the computer are parameters of the candidate
+        the instance should represent.
+        """
+        import uuid
+
+        self._definingValues = definingValues
+
+        self._definingStr = str()
+
+        for item in sorted(definingValues.items()):
+            self._definingStr = self._definingStr + "'" + str(item[0]) + "':'" + str(item[1]) + "',"
+
+        self.ID = str(uuid.uuid4())
+
+    def __missing__(self, key):
+        return None
+
+    def __len__(self):
+        return len(self._definingValues)
+
+    def __contains__(self, key):
+        return key in self._definingValues
+
+    def __eq__(self, other):
+        if isinstance(other, self.__class__):
+            return self._definingValues == other._definingValues
+        else:
+            return False
+
+    def __hash__(self):
+        return hash(self._definingStr)
+
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
+    def __repr__(self):
+        return 'EvalInstanceDescriptor(%s)' % (self._definingValues)
+
+    def __str__(self):
+        return '(%s)' % (self._definingValues)
+
+    def keys(self):
+        return self._definingValues.keys()
+
+    def __getitem__(self, key):
+        if key in self._definingValues:
+            return self._definingValues[key]
+        raise KeyError('Unkown defining value key was requested. Key: {}; self: {}'.format(key, self))
+
+    def get_values(self):
+        return self._definingValues
\ No newline at end of file