Updated README.md

README.md

-# KGEvaluation
+# 🧭 Knowledge-Graph Embeddings — Training & Evaluation
+
+This repository implements the Bachelor thesis project:
+
+> **DECONSTRUCTING KNOWLEDGE GRAPH DIFFICULTY: A FRAMEWORK FOR COMPLEXITY‑AWARE EVALUATION AND GENERATION**
+
+It trains and evaluates **knowledge‑graph embedding (KGE)** models using **custom training logic**. We use **PyKeen** for core building blocks (models, datasets, evaluators, losses, regularizers) but **do not use the PyKeen pipeline**. **Hydra** powers configuration and multi‑run sweeps.
+
+---
+
+## ✅ What’s in this repo
+
+```
+Root/
+├─ configs/
+│  ├─ common/               # run name, logging, save paths, resume/eval flags
+│  │  └─ common.yaml
+│  ├─ data/                 # dataset choices
+│  │  ├─ data.yaml
+│  │  ├─ fb15k.yaml
+│  │  ├─ wn18.yaml
+│  │  ├─ wn18rr.yaml
+│  │  └─ yago3_10.yaml
+│  ├─ model/                # model choices & defaults
+│  │  ├─ model.yaml
+│  │  ├─ trans_e.yaml
+│  │  ├─ trans_h.yaml
+│  │  └─ trans_r.yaml
+│  ├─ training/             # optimizer/lr/batch/steps + trainer class
+│  │  ├─ training.yaml
+│  │  └─ trans_e_trainer.yaml
+│  ├─ model_trainers/       # (Hydra group) trainer implementations
+│  │  ├─ model_trainer_base.py
+│  │  └─ translation/{trans_e_trainer.py, trans_h_trainer.py, trans_r_trainer.py}
+│  ├─ config.yaml           # Hydra defaults: common, data, model, training
+│  ├─ trans_e_fb15k.yaml    # ready‑made composed config
+│  ├─ trans_e_wn18.yaml
+│  ├─ trans_e_wn18rr.yaml
+│  └─ trans_e_yago3_10.yaml
+├─ data/                    # dataset wrappers + TSV helper
+│  ├─ kg_dataset.py         # KGDataset + create_from_tsv(...)
+│  ├─ wn18.py               # WN18Dataset, WN18RRDataset
+│  ├─ fb15k.py, yago3_10.py, openke_wiki.py, hationet.py, open_bio_link.py
+├─ models/                  # minimal translation‑based models
+│  ├─ base_model.py
+│  └─ translation/{trans_e.py, trans_h.py, trans_r.py}
+├─ metrics/                 # complexity metrics and ranking metrics
+│  ├─ c_swklf.py, wlcrec.py, wlec.py, greedy_crec.py, crec_radius_sample.py, ranking.py
+├─ training/                # Trainer orchestrating data/model/loop
+│  └─ trainer.py
+├─ tools/                   # logging, TB, sampling, checkpoints, params
+│  ├─ pretty_logger.py, tb_handler.py, sampling.py, checkpoint_manager.py
+│  └─ params.py             # CommonParams, TrainingParams dataclasses
+├─ main.py                  # **single entrypoint** (@hydra.main)
+├─ build_crec_datasets.py   # helper to tune/sample CREC subsets
+├─ eval_datasets.py         # example: compute WL(C)REC over datasets
+└─ pyproject.toml           # formatting/lint settings
+```
+
+## ✨ Highlights
+
+- **No PyKeen pipeline.** Models, samplers, and evaluators are instantiated directly; training runs through our wrappers around PyKeen’s `TrainingLoop`.
+- **Hydra CLI.** One-line overrides, organized config groups, and multi-run sweeps (`-m`).
+- **Datasets.** Built-ins or custom triples (TSV/CSV).
+- **Reproducible outputs.** Each run gets a timestamped directory with the resolved config, checkpoints, metrics, and artifacts.
+- **Extendable.** Add models/configs without touching the training loop.
+
+
+## 🧰 Requirements
+
+- Python 3.10+
+- PyTorch
+- PyKeen
+- Hydra Core + OmegaConf
+- NumPy, einops
+- lovely‑tensors (optional pretty tensor prints)
+- TensorBoard
+
+## 🛠 Installation
+
+> Python **3.10+** recommended. GPU optional but encouraged for larger graphs.
+
+**Install script**
+```bash
+bash setup/install.sh
+```
+
+
+**Conda + pip**
+```bash
+conda create -n kge python=3.10 -y
+conda activate kge
+pip install -U pip wheel
+pip install -e .
+```
+
+**Virtualenv/venv**
+```bash
+python -m venv .venv && source .venv/bin/activate
+conda create -n kge python=3.10 -y
+conda activate kge
+pip install -U pip wheel
+pip install -e .
+```
+
+**CUDA users:** install a PyTorch build matching your CUDA (see pytorch.org) **before** project deps.
+
+Core dependencies: `torch`, `hydra-core`, `omegaconf`, `pykeen` (core), `pandas`, `numpy`.
+
+
+---
+
+## 🚀 Quick start
+
+### 1) Single run (built‑in dataset)
+
+Train TransE on WN18RR:
+
+```bash
+python main.py   model=trans_e   data=wn18rr   training.batch_size=1024   training.lr=5e-4   common.run_name=transe_wn18rr_bs1024_lr5e4
+```
+
+### 2) Use a composed config
+
+Predefined composition for TransE on FB15K:
+
+```bash
+python main.py -cn trans_e_fb15k
+# or: python main.py --config-name trans_e_fb15k
+```
+
+You can still override fields:
+
+```bash
+python main.py -cn trans_e_fb15k training.batch_size=2048 training.lr=1e-3
+```
+
+### 3) Evaluate only (load checkpoint)
+
+Set `common.evaluate_only=true` and point `common.load_path` to a checkpoint. Two modes are supported by `CheckpointManager`:
+
+- **Full path** to a checkpoint file
+- A **pair** `(model_id, iteration)` that resolves to `checkpoints/<model_id>/checkpoints/<iteration>.pt`
+
+Examples:
+
+```bash
+# full path
+python main.py common.evaluate_only=true common.load_path=/absolute/path/to/checkpoints/2/checkpoints/1800.pt
+
+# by components (id, iter) — YAML style tuple
+python main.py -cn trans_e_fb15k common.evaluate_only=true common.load_path="(2, 1800)"
+```
+
+### 4) Multi‑run sweeps (Hydra `-m`)
+
+```bash
+# 3 models × 2 seeds = 6 runs
+python main.py -m model=trans_e,trans_h,trans_r seed=1,2
+
+# grid over batch size and LR
+python main.py -m training.batch_size=512,1024 training.lr=5e-4,1e-3
+```
+
+---
+
+## 📦 Datasets
+
+Built‑in wrappers (via PyKeen) are provided for **WN18**, **WN18RR**, **FB15K**, **YAGO3‑10**. Select with `data=<name>` where `<name>` is one of `wn18`, `wn18rr`, `fb15k`, `yago3_10`.
+
+### Custom triples from TSV
+
+`data/kg_dataset.py` provides `create_from_tsv(root)` which expects `train.txt`, `valid.txt`, `test.txt` under `root/` (tab‑separated: `head<TAB>relation<TAB>tail`). To use this with Hydra, add a small config (e.g. `configs/data/custom.yaml`):
+
+```yaml
+# configs/data/custom.yaml
+train:
+  _target_: data.kg_dataset.create_from_tsv
+  root: /absolute/path/to/mykg
+  splits: [train]
+
+valid:
+  _target_: data.kg_dataset.create_from_tsv
+  root: /absolute/path/to/mykg
+  splits: [valid]
+```
+
+Then run with `data=custom`:
+
+```bash
+python main.py model=trans_e data=custom common.run_name=my_custom_kg
+```
+
+---
+
+## 🧪 Metrics & Evaluation
+
+- Ranking metrics via PyKeen’s `RankBasedEvaluator` (e.g., Hits@K, I(H)MR) are wired in the `training/trainer.py` loop.
+- Complexity metrics in `metrics/`: `WLCREC`, `WLEC`, `CSWKLF`, greedy CREC, radius sampling.
+- For a quick dataset‑level report, see `eval_datasets.py` (prints WLEC‑family metrics).
+
+Set `common.evaluate_only=true` to run evaluation on a loaded model as shown above.
+
+---
+
+## 📝 Logging, outputs, checkpoints
+
+- **Hydra outputs**: `./outputs` (configured in `configs/config.yaml`).
+- **TensorBoard**: `logs/<run_name>` (see `tools/tb_handler.py`; open with `tensorboard --logdir logs`).
+- **Checkpoints**: by default in `common.save_dpath` (see `configs/common/common.yaml`). The `CheckpointManager` supports both absolute file paths and `(model_id, iteration)` addressing via `common.load_path`.
+
+---
+
+## 🔧 Common knobs (cheat sheet)
+
+```bash
+# Model & dimensions
+python main.py model=trans_e model.dim=200
+python main.py model=trans_h model.dim=400
+python main.py model=trans_r model.dim=500
+
+# Training length & batches
+python main.py training.num_train_steps=20000 training.batch_size=2048
+
+# Learning rate & weight decay
+python main.py training.lr=1e-3 training.weight_decay=1e-5
+
+# Reproducibility
+python main.py seed=1234
+```
+
+---
+
+## 📚 Citation