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COPYRIGHT.txt

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+CLEVR (c) 2017, Facebook, Inc. 
+
+CLEVR is licensed under a
+Creative Commons Attribution 4.0 International License.
+
+You should have received a copy of the license along with this
+work. If not, see <http://creativecommons.org/licenses/by/4.0/>.

LICENSE.txt

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+Attribution 4.0 International
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README.txt

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+The data is organized into the following directory structure:
+
+images/
+  train/
+    CLEVR_train_000000.png
+    CLEVR_train_000001.png
+    [...]
+    CLEVR_train_069999.png
+  val/
+    CLEVR_val_000000.png
+    [...]
+    CLEVR_val_014999.png
+  test/
+    CLEVR_test_000000.png
+    [...]
+    CLEVR_test_014999.png
+scenes/
+  CLEVR_train_scenes.json
+  CLEVR_val_scenes.json
+questions/
+  CLEVR_train_questions.json
+  CLEVR_val_questions.json
+  CLEVR_test_questions.json
+
+
+SCENE FILE FORMAT
+Each of the scene files has the following format:
+
+{
+  "info": <info>,
+  "scenes": [<scene>]
+}
+
+<info> {
+  "split": <string: "train", "val", or "test">,
+  "version": <string>,
+  "date": <string>,
+  "license": <string>,
+}
+
+<scene> {
+  "spit": <string: "train", "val", or "test">,
+  "image_index": <integer>,
+  "image_filename": <string, e.g. "CLEVR_train_000000.png">,
+  "directions": {
+    "left": [list of 3 numbers x, y, z],
+    "right": [list of 3 numbers x, y, z],
+    "front": [list of 3 numbers x, y, z],
+    "behind": [list of 3 numbers x, y, z],
+    "below": [list of 3 numbers x, y, z],
+    "above": [list of 3 numbers x, y, z]
+  },
+  "objects": [<object>],
+  "relations": {
+    "left": <adjacency list>,
+    "right": <adjacency list>,
+    "front": <adjacency list>,
+    "behind": <adjacency list>
+  }
+}
+
+Relationships are stored as adjacency lists, which are lists of lists of
+integers. If s is a <scene> object, then s['relations']['left'][i] is a list of
+indices for objects which are left of s['objects'][i].
+
+In other words, s['objects'][j] is left of s['objects'][i] if and only if
+j is in s['relations']['left'][i].
+
+<object> {
+  "3d_coords": [list of 3 numbers x, y, z],
+  "pixel_coords": [list of 3 numbers x, y, z],
+  "rotation": <number, in degrees>,
+  "size': <string: "small" or "large">,
+  "color": <string: "gray", "blue", "brown", "yellow", "red", "green", "purple", or "cyan">,
+  "material": <string: "rubber" or "metal">,
+  "shape": <string: "cube", "sphere", or "cylinder">
+}
+
+
+QUESTION FILE FORMAT
+Each of the question files has the following format:
+
+{
+  "info": <info>,
+  "questions": [<question>]
+}
+
+<info> {
+  "split": <string: "train", "val", or "test">,
+  "version": <string>,
+  "date": <string>,
+  "license": <string>
+}
+
+<question> {
+  "split": <string: "train", "val", or "test">,
+  "image_index": <integer>,
+  "image_filename": <string, e.g. "CLEVR_train_000000.png">,
+  "question": <string>,
+  "answer": <string>,
+  "program": [<function>],
+  "question_family_index': <integer>,
+}
+
+Answers and programs are omitted from the test data.
+
+<function> {
+  "function": <string, e.g. "filter_color">,
+  "inputs": [list of integer],
+  "value_inputs": [list of strings],
+}
+
+Programs are represented as lists of functions. Each function may take as input
+both literal values (given in "value_inputs") and output from other functions
+(given in "inputs"). Functions are guaranteed to be sorted topologically, so
+that j in program[i]['inputs'] if and only if j < i.
+
+As a simple example, consider the question "How many blue cubes are there?"
+
+The program representation for this question would be:
+
+[
+  {
+    "function": "scene",
+    "inputs": [],
+    "value_inputs": []
+  },
+  {
+    "function": "filter_color",
+    "inputs": [0],
+    "value_inputs": ["blue"]
+  },
+  {
+    "function": "filter_shape",
+    "inputs": [1],
+    "value_inputs": ["cube"]
+  },
+  {
+    "function": "count",
+    "inputs": [2],
+    "value_inputs": []
+  }
+]
+
+Note that all programs contain one or more "scene" functions; this is a special
+function that takes no inputs, and outputs the set of all objects in the scene.
+