[nnpkg] Update specification for operators (#7355)

It specifies the operators will use the same input, output and
attributes from tensorflow lite.

Signed-off-by: Sanggyu Lee <sg5.lee@samsung.com>

diff --git a/nnpackage/spec/20_model_and_operators.md b/nnpackage/spec/20_model_and_operators.md
index 38d3600..07f4c37 100644 (file)
--- a/nnpackage/spec/20_model_and_operators.md
+++ b/nnpackage/spec/20_model_and_operators.md
@@ -77,6 +77,10 @@ operator (e.g. `tflite.slice`).
 
 ## Operator Reference
 
+All operators use same semantics of tensorflow lite operators.
+Refer tensorflow lite source code to understand what inputs, outputs and attributes
+are required and how they are interpretered.
+
 ## Schema Source
 
 For detail, see the schema file [flatbuffers schema for nnpackage model](../schema/nnpackage_model.fbs).