From 4e642358c6e493240a1fba7dfe4848c3767f445a Mon Sep 17 00:00:00 2001
From: JingYu Ning <foldfelis@gmail.com>
Date: Mon, 22 Nov 2021 20:03:11 +0800
Subject: [PATCH] Update index.md

---
 docs/src/index.md | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/docs/src/index.md b/docs/src/index.md
index d8c9f8c9..4154ca3c 100644
--- a/docs/src/index.md
+++ b/docs/src/index.md
@@ -46,14 +46,15 @@ pkg> add NeuralOperators
 
 ```julia
 model = Chain(
-    # project finite-dimensional data to infinite-dimensional space
+    # lift (d + 1)-dimensional vector field to n-dimensional vector field
+    # here, d == 1 and n == 64
     Dense(2, 64),
-    # operator projects data between infinite-dimensional spaces
+    # map each hidden representation to the next by integral kernel operator
     FourierOperator(64=>64, (16, ), gelu),
     FourierOperator(64=>64, (16, ), gelu),
     FourierOperator(64=>64, (16, ), gelu),
     FourierOperator(64=>64, (16, )),
-    # project infinite-dimensional function to finite-dimensional space
+    # project back to the scalar field of interest space
     Dense(64, 128, gelu),
     Dense(128, 1),
     flatten