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final new guide changes
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guide/14-deep-learning/point_cloud_classification_using_point_transformer.ipynb

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"2. **Attention Mechanism:** PTv3 employs a simplified attention mechanism that is tailored for serialized point clouds. It utilizes a patch attention mechanism, grouping points into non-overlapping patches for localized processing.\n",
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"\n",
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"3. **Positional Encoding:** PTv3 replaces the computationally expensive relative positional encoding with a simpler and more efficient conditional positional encoding (CPE). This is implemented by a sparse convolutional layer."
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"3. **Positional Encoding:** PTv3 replaces the computationally expensive relative positional encoding with a simpler and more efficient conditional positional encoding (xCPE). This is implemented by a sparse convolutional layer."
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"Accurate positional information is crucial for point cloud understanding. PTv3 replaces the computationally expensive relative positional encoding (RPE) used in earlier versions with a simpler and more efficient approach. It utilizes a conditional positional encoding (CPE) implemented by a sparse convolutional layer.This CPE effectively captures positional information while minimizing computational overhead. The sparse convolutional layer is prepended before the attention layer with a skip connection, further enhancing the efficiency of the positional encoding process. The changes in positional encoding contribute to the overall efficiency and scalability of PTv3, enabling it to handle large-scale point cloud data with improved speed and accuracy."
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"Accurate positional information is crucial for point cloud understanding. PTv3 replaces the computationally expensive relative positional encoding (RPE) used in earlier versions with a simpler and more efficient approach. It utilizes a conditional positional encoding (xCPE) implemented by a sparse convolutional layer. This xCPE effectively captures positional information while minimizing computational overhead. The sparse convolutional layer is prepended before the attention layer with a skip connection, further enhancing the efficiency of the positional encoding process. The changes in positional encoding contribute to the overall efficiency and scalability of PTv3, enabling it to handle large-scale point cloud data with improved speed and accuracy."
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guide/14-deep-learning/point_cloud_object_detection_using_second.ipynb

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"metadata": {
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"kernelspec": {
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"display_name": "Python 3 (ipykernel)",
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"display_name": "Python [conda env:conda-arcgispro-py3-clone] *",
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"language": "python",
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"name": "python3"
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"name": "conda-env-conda-arcgispro-py3-clone-py"
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"language_info": {
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"codemirror_mode": {

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