Add lec4 examples

lec2.ipynb

@@ -1878,7 +1878,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": ".venv (3.13.3)",
+   "display_name": ".venv (3.12.10)",
    "language": "python",
    "name": "python3"
   },

pyproject.toml

@@ -16,8 +16,27 @@ jupyter = "^1.1.1"
 numpy = "^1.26.4"
 pandas = "^2.2.2"
 matplotlib = "^3.9.2"
+scikit-learn = "^1.5.2"
+kagglehub = "^0.3.12"
+mahotas = "^1.4.18"
+python-docx = "^1.1.2"
+spacy = "^3.7.5"
+ru_core_news_lg = {url = "https://github.com/explosion/spacy-models/releases/download/ru_core_news_lg-3.7.0/ru_core_news_lg-3.7.0-py3-none-any.whl"}
+gensim = "^4.3.3"
+bokeh = "^3.7.2"
 keras = "^3.9.2"
 jax = "^0.5.3"
+torch = "^2.7.0"
+torchaudio = "^2.7.0"
+torchvision = "^0.22.0"
+#torch = { version = "^2.7.0+cu128", source = "pytorch-cuda128" }
+#torchaudio = { version = "^2.7.0+cu128", source = "pytorch-cuda128" }
+#torchvision = { version = "^0.22.0+cu128", source = "pytorch-cuda128" }
+
+#[[tool.poetry.source]]
+#name = "pytorch-cuda128"
+#url = "https://download.pytorch.org/whl/cu128"
+#priority = "explicit"
 
 [build-system]
 requires = ["poetry-core"]