update tsne

Author: chillerb

content/02_ml_from_scratch/tsne.ipynb

@@ -9,6 +9,12 @@
     "\n",
     "> t-distributed Stochastic Neighbor Embedding\n",
     "\n",
+    "- t-SNE: method to visualize high-dimensional data\n",
+    "- not *really* for dimensionality reduction:\n",
+    "    - non-deterministic projection into lower-dimensional space\n",
+    "    - however, great for visualization\n",
+    "- core idea: points that are neighbors in *high-dimensional space* should still be neighbors in the *low-dimensional space*\n",
+    "\n",
     "https://www.jmlr.org/papers/volume9/vandermaaten08a/vandermaaten08a.pdf"
    ]
   },