Upload README.md with huggingface_hub

README.md

@@ -1,42 +1,22 @@
 ---
-dataset_info:
-  features:
-  - name: topology
-    dtype:
-      image:
-        mode: '1'
-  - name: loads
-    dtype:
-      array2_d:
-        shape:
-        - null
-        - 4
-        dtype: float32
-  - name: boundary conditions
-    dtype:
-      array2_d:
-        shape:
-        - null
-        - 4
-        dtype: float32
-  - name: volume fraction
-    dtype: float32
-  - name: aspect ratio
-    dtype: float32
-  splits:
-  - name: train
-    num_bytes: 74333257
-    num_examples: 84667
-  - name: test
-    num_bytes: 1383627
-    num_examples: 1500
-  download_size: 65822552
-  dataset_size: 75716884
-configs:
-- config_name: default
-  data_files:
-  - split: train
-    path: data/train-*
-  - split: test
-    path: data/test-*
+license: mit
+size_categories: [10K<n<100K]
 ---
+# OpenTO-NL
+
+Finite-strain (geometrically nonlinear) topology optimization designs in the OpenTO scheme.
+
+| column | type | meaning |
+|---|---|---|
+| `topology` | 1-bit image (nelx, nely) | the design, binary |
+| `loads` | (n, 4) float32 | rows (c0, c1, fx, fy): node position in long-edge-normalized matrix coordinates and the PHYSICAL load vector |
+| `boundary conditions` | (n, 4) float32 | rows (c0, c1, fix_x, fix_y) |
+| `volume fraction` | float32 | target volume fraction |
+| `aspect ratio` | float32 | nely / nelx |
+
+Material: modified Saint Venant-Kirchhoff, plane strain, E = 1, nu = 0.3, unit elements, void at the SIMP
+floor (E_min = 1e-6). Loads are absolute: the same structure at a larger load is a different, nonlinear problem.
+Every design was checked with a finite-strain path-following solver and carries its applied load: a converged
+equilibrium exists at the applied load and the design's limit load is at or above it.
+Splits: `train` 84,667 samples, `test` 1,500 samples; the test boundary conditions (supports and load pattern)
+do not occur in train at any volume fraction.