{ "cells": [ { "cell_type": "markdown", "id": "2f04eee0-5928-4e74-a754-6dc2e528810c", "metadata": {}, "source": [ "# epiTOC1" ] }, { "cell_type": "markdown", "id": "a3f514a3-772c-4a14-afdf-5a8376851ff4", "metadata": {}, "source": [ "## Index\n", "1. [Instantiate model class](#Instantiate-model-class)\n", "2. [Define clock metadata](#Define-clock-metadata)\n", "3. [Download clock dependencies](#Download-clock-dependencies)\n", "5. [Load features](#Load-features)\n", "6. [Load weights into base model](#Load-weights-into-base-model)\n", "7. [Load reference values](#Load-reference-values)\n", "8. [Load preprocess and postprocess objects](#Load-preprocess-and-postprocess-objects)\n", "10. [Check all clock parameters](#Check-all-clock-parameters)\n", "10. [Basic test](#Basic-test)\n", "11. [Save torch model](#Save-torch-model)\n", "12. [Clear directory](#Clear-directory)" ] }, { "cell_type": "markdown", "id": "d95fafdc-643a-40ea-a689-200bd132e90c", "metadata": {}, "source": [ "Let's first import some packages:" ] }, { "cell_type": "code", "execution_count": 1, "id": "4adfb4de-cd79-4913-a1af-9e23e9e236c9", "metadata": {}, "outputs": [], "source": [ "import os\n", "import inspect\n", "import shutil\n", "import json\n", "import torch\n", "import pandas as pd\n", "import pyaging as pya" ] }, { "cell_type": "markdown", "id": "145082e5-ced4-47ae-88c0-cb69773e3c5a", "metadata": {}, "source": [ "## Instantiate model class" ] }, { "cell_type": "code", "execution_count": 2, "id": "8aa77372-7ed3-4da7-abc9-d30372106139", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "class epiTOC1(pyagingModel):\n", " def __init__(self):\n", " super().__init__()\n", "\n", " def preprocess(self, x):\n", " # Filter out -1 values per row and calculate the mean per row\n", " means = []\n", " for row in x:\n", " filtered_row = row[row != -1]\n", " if len(filtered_row) > 0:\n", " mean = torch.mean(filtered_row)\n", " else:\n", " mean = torch.tensor(float('nan'))\n", " means.append(mean)\n", " return torch.vstack(means)\n", "\n", " def postprocess(self, x):\n", " return x\n", "\n" ] } ], "source": [ "def print_entire_class(cls):\n", " source = inspect.getsource(cls)\n", " print(source)\n", "\n", "print_entire_class(pya.models.epiTOC1)" ] }, { "cell_type": "code", "execution_count": 3, "id": "78536494-f1d9-44de-8583-c89a310d2307", "metadata": {}, "outputs": [], "source": [ "model = pya.models.epiTOC1()" ] }, { "cell_type": "markdown", "id": "51f8615e-01fa-4aa5-b196-3ee2b35d261c", "metadata": {}, "source": [ "## Define clock metadata" ] }, { "cell_type": "code", "execution_count": 4, "id": "6601da9e-8adc-44ee-9308-75e3cd31b816", "metadata": {}, "outputs": [], "source": [ "model.metadata[\"clock_name\"] = \"epitoc1\"\n", "model.metadata[\"data_type\"] = \"DNA methylation\" # Paper: The study constructs clocks from DNA methylation measurements.\n", "model.metadata[\"species\"] = \"Homo sapiens\" # Paper: The analyzed samples and clock are human.\n", "model.metadata[\"year\"] = 2016\n", "model.metadata[\"approved_by_author\"] = \"⌛\"\n", "model.metadata[\"citation\"] = \"Yang, Zhen, et al. \\\"Correlation of an epigenetic mitotic clock with cancer risk.\\\" Genome Biology 17 (2016): 205.\"\n", "model.metadata[\"doi\"] = \"https://doi.org/10.1186/s13059-016-1064-3\"\n", "model.metadata[\"notes\"] = \"Relative mitotic-age score equal to the mean beta value across 385 polycomb-target promoter CpGs; it is not an absolute division count.\"\n", "model.metadata[\"research_only\"] = None\n", "model.metadata[\"tissue\"] = [\"multi-tissue\", \"whole blood\"] # Paper: Fetal tissues established an unmethylated ground state and Hannum whole blood established age gain.\n", "model.metadata[\"predicts\"] = [\"mitotic age\"] # Paper: The score is a relative estimate of stem-cell divisions per stem cell.\n", "model.metadata[\"training_target\"] = [\"chronological age\"] # Paper: The 385 sites were selected for age-associated hypermethylation in healthy blood.\n", "model.metadata[\"unit\"] = [\"beta value\"] # Paper: pcgtAge is the average beta value over the 385 selected CpGs.\n", "model.metadata[\"model_type\"] = \"mean methylation aggregation\" # Paper: The score is calculated as an unweighted average of selected CpG beta values.\n", "model.metadata[\"platform\"] = [\"Illumina 450K\"] # Paper: The derivation data and selected probes were from Illumina 450K methylation profiles.\n", "model.metadata[\"population\"] = \"all ages\" # Paper: Model derivation combined fetal reference tissues with healthy adult samples from the Hannum whole-blood cohort.\n", "model.metadata[\"journal\"] = \"Genome Biology\"\n", "model.metadata[\"last_author\"] = \"Andrew E. Teschendorff\"\n", "model.metadata[\"n_features\"] = 385\n", "model.metadata[\"citations\"] = 357\n", "model.metadata[\"citations_date\"] = \"2026-07-05\"\n" ] }, { "cell_type": "markdown", "id": "74492239-5aae-4026-9d90-6bc9c574c110", "metadata": {}, "source": [ "## Download clock dependencies" ] }, { "cell_type": "markdown", "id": "c07158bc-19c9-47de-8276-5d1dc5361b22", "metadata": {}, "source": [ "#### Download directly with curl" ] }, { "cell_type": "code", "execution_count": 5, "id": "6b57cb84-b940-4cfe-8933-3955cab9dfe9", "metadata": {}, "outputs": [ { "data": { "text/plain": [ "0" ] }, "execution_count": 5, "metadata": {}, "output_type": "execute_result" } ], "source": [ "supplementary_url = \"https://static-content.springer.com/esm/art%3A10.1186%2Fs13059-016-1064-3/MediaObjects/13059_2016_1064_MOESM2_ESM.xls\"\n", "supplementary_file_name = \"coefficients.xlsx\"\n", "os.system(f\"curl -o {supplementary_file_name} {supplementary_url}\")" ] }, { "cell_type": "markdown", "id": "5035b180-3d1b-4432-8ebe-b9c92bd93a7f", "metadata": {}, "source": [ "## Load features" ] }, { "cell_type": "markdown", "id": "793d7b24-b1ef-4dd2-ac26-079f7b67fba7", "metadata": {}, "source": [ "#### From Excel file" ] }, { "cell_type": "code", "execution_count": 6, "id": "110a5ded-d25f-4cef-8e84-4f51210dfc26", "metadata": {}, "outputs": [], "source": [ "df = pd.read_excel('coefficients.xlsx', sheet_name='agehyperPCGT-tableS1', skiprows=1)\n", "df['feature'] = df['CpG'].astype(str)\n", "\n", "model.features = df['feature'].tolist()" ] }, { "cell_type": "markdown", "id": "ee6d8fa0-4767-4c45-9717-eb1c95e2ddc0", "metadata": {}, "source": [ "## Load weights into base model" ] }, { "cell_type": "code", "execution_count": 7, "id": "e09b3463-4fd4-41b1-ac21-e63ddd223fe0", "metadata": {}, "outputs": [], "source": [ "weights = torch.tensor([1.0]).unsqueeze(0)\n", "intercept = torch.tensor([0.0])" ] }, { "cell_type": "markdown", "id": "ad261636-5b00-4979-bb1d-67a851f7aa19", "metadata": {}, "source": [ "#### Linear model" ] }, { "cell_type": "code", "execution_count": 8, "id": "d7f43b99-26f2-4622-9a76-316712058877", "metadata": {}, "outputs": [], "source": [ "base_model = pya.models.LinearModel(input_dim=len(model.features))\n", "\n", "base_model.linear.weight.data = weights.float()\n", "base_model.linear.bias.data = intercept.float()\n", "\n", "model.base_model = base_model" ] }, { "cell_type": "markdown", "id": "ad8b4c1d-9d57-48b7-9a30-bcfea7b747b1", "metadata": {}, "source": [ "## Load reference values" ] }, { "cell_type": "code", "execution_count": 9, "id": "ade0f4c9-2298-4fc3-bb72-d200907dd731", "metadata": {}, "outputs": [], "source": [ "model.reference_values = [-1]*len(model.features)" ] }, { "cell_type": "markdown", "id": "af3bcf7b-74a8-4d21-9ccb-4de0c2b0516b", "metadata": {}, "source": [ "## Load preprocess and postprocess objects" ] }, { "cell_type": "code", "execution_count": 10, "id": "7a22fb20-c605-424d-8efb-7620c2c0755c", "metadata": {}, "outputs": [], "source": [ "model.preprocess_name = \"mean\"\n", "model.preprocess_dependencies = None" ] }, { "cell_type": "code", "execution_count": 11, "id": "ff4a21cb-cf41-44dc-9ed1-95cf8aa15772", "metadata": {}, "outputs": [], "source": [ "model.postprocess_name = None\n", "model.postprocess_dependencies = None" ] }, { "cell_type": "markdown", "id": "86e3d6b1-e67e-4f3d-bd39-0ebec5726c3c", "metadata": {}, "source": [ "## Check all clock parameters" ] }, { "cell_type": "code", "execution_count": 12, "id": "2168355c-47d9-475d-b816-49f65e74887c", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "\n", "%==================================== Model Details ====================================%\n", "Model Attributes:\n", "\n", "training: True\n", "metadata: {'approved_by_author': '⌛',\n", " 'citation': 'Yang, Zhen, et al. \"Correlation of an epigenetic mitotic clock '\n", " 'with cancer risk.\" Genome biology 17 (2016): 1-18.',\n", " 'clock_name': 'epitoc1',\n", " 'data_type': 'methylation',\n", " 'doi': 'https://doi.org/10.1186/s13059-016-1064-3',\n", " 'notes': 'The reference values are simply -1 for the algorithm to ignore '\n", " 'them.',\n", " 'research_only': None,\n", " 'species': 'Homo sapiens',\n", " 'version': None,\n", " 'year': 2016}\n", "reference_values: [-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1]... [Total elements: 385]\n", "preprocess_name: 'mean'\n", "preprocess_dependencies: None\n", "postprocess_name: None\n", "postprocess_dependencies: None\n", "features: ['cg00043095', 'cg00060320', 'cg00181968', 'cg00329270', 'cg00347369', 'cg00397986', 'cg00466268', 'cg00665492', 'cg00884606', 'cg00916884', 'cg00930628', 'cg00962913', 'cg01050423', 'cg01185626', 'cg01435574', 'cg01537995', 'cg01587896', 'cg01670677', 'cg01699217', 'cg01783070', 'cg01830294', 'cg02004418', 'cg02056682', 'cg02071825', 'cg02150988', 'cg02160530', 'cg02186542', 'cg02266732', 'cg02315940', 'cg02554246']... [Total elements: 385]\n", "base_model_features: None\n", "\n", "%==================================== Model Details ====================================%\n", "Model Structure:\n", "\n", "base_model: LinearModel(\n", " (linear): Linear(in_features=385, out_features=1, bias=True)\n", ")\n", "\n", "%==================================== Model Details ====================================%\n", "Model Parameters and Weights:\n", "\n", "base_model.linear.weight: tensor([[1.]])\n", "base_model.linear.bias: tensor([0.])\n", "\n", "%==================================== Model Details ====================================%\n", "\n" ] } ], "source": [ "pya.utils.print_model_details(model)" ] }, { "cell_type": "markdown", "id": "986d0262-e0c7-4036-b687-dee53ba392fb", "metadata": {}, "source": [ "## Basic test" ] }, { "cell_type": "code", "execution_count": 13, "id": "936b9877-d076-4ced-99aa-e8d4c58c5caf", "metadata": {}, "outputs": [ { "data": { "text/plain": [ "tensor([[ 0.0669],\n", " [-0.0019],\n", " [ 0.0772],\n", " [ 0.0336],\n", " [-0.1134],\n", " [-0.0825],\n", " [-0.0375],\n", " [-0.0160],\n", " [-0.0543],\n", " [-0.0141]], dtype=torch.float64, grad_fn=)" ] }, "execution_count": 13, "metadata": {}, "output_type": "execute_result" } ], "source": [ "torch.manual_seed(42)\n", "input = torch.randn(10, len(model.features), dtype=float)\n", "model.eval()\n", "model.to(float)\n", "pred = model(input)\n", "pred" ] }, { "cell_type": "markdown", "id": "fe8299d7-9285-4e22-82fd-b664434b4369", "metadata": {}, "source": [ "## Save torch model" ] }, { "cell_type": "code", "execution_count": 14, "id": "5ef2fa8d-c80b-4fdd-8555-79c0d541788e", "metadata": {}, "outputs": [], "source": [ "torch.save(model, f\"../weights/{model.metadata['clock_name']}.pt\")" ] }, { "cell_type": "markdown", "id": "bac6257b-8d08-4a90-8d0b-7f745dc11ac1", "metadata": {}, "source": [ "## Clear directory\n", "" ] }, { "cell_type": "code", "execution_count": 15, "id": "11aeaa70-44c0-42f9-86d7-740e3849a7a6", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "Deleted file: coefficients.xlsx\n", "Deleted folder: .ipynb_checkpoints\n" ] } ], "source": [ "# Function to remove a folder and all its contents\n", "def remove_folder(path):\n", " try:\n", " shutil.rmtree(path)\n", " print(f\"Deleted folder: {path}\")\n", " except Exception as e:\n", " print(f\"Error deleting folder {path}: {e}\")\n", "\n", "# Get a list of all files and folders in the current directory\n", "all_items = os.listdir('.')\n", "\n", "# Loop through the items\n", "for item in all_items:\n", " # Check if it's a file and does not end with .ipynb\n", " if os.path.isfile(item) and not item.endswith('.ipynb'):\n", " os.remove(item)\n", " print(f\"Deleted file: {item}\")\n", " # Check if it's a folder\n", " elif os.path.isdir(item):\n", " remove_folder(item)" ] } ], "metadata": { "kernelspec": { "display_name": "Python 3", "language": "python", "name": "python3" }, "language_info": { "codemirror_mode": { "name": "ipython", "version": 3 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", "version": "3.9.17" } }, "nbformat": 4, "nbformat_minor": 5 }