feat: add example of format structure

Prisma/influence_diagram.py

@@ -0,0 +1,25 @@
+from typing import Optional, List, Any
+from Prisma.models.node import Node
+from Prisma.models.edge import Edge
+
+class InfluenceDiagram:
+    def __init__(self, nodes: List[Node], arcs: List[Edge]) -> None:
+        self.nodes = nodes
+        self.arcs = arcs
+        self.network = self._construct_network()
+
+    def _construct_network(self):
+        # networkx implementation
+        pass
+
+    def _has_loop(self):
+        pass
+
+    def _validate_influence_diagram(self):
+        pass
+
+    def to_decision_tree(self):
+        pass
+
+    def solve_with_pyagrum(self):
+        pass

Prisma/models/edge.py

@@ -0,0 +1,6 @@
+import uuid
+from pydantic import BaseModel
+
+class Edge(BaseModel):
+    tail_node_id: uuid.UUID
+    hea_node_id: uuid.UUID

Prisma/models/node.py

@@ -0,0 +1,21 @@
+import uuid
+from pydantic import BaseModel
+
+class Node(BaseModel):
+    id: uuid.UUID
+
+class DecisionNode(Node):
+    pass
+
+class Utility(BaseModel):
+    parents: list[uuid.UUID]
+    utility: float
+
+class UtilityNode(Node):
+    utilties: list[Utility]
+
+class Probability(BaseModel):
+    parents: list[uuid.UUID]
+
+class UncertaintyNode(Node):
+    probabilities: list[Probability]