diff --git a/src/MEDS_tabular_automl/evaluation_callback.py b/src/MEDS_tabular_automl/evaluation_callback.py
index d9236f8..30618db 100644
--- a/src/MEDS_tabular_automl/evaluation_callback.py
+++ b/src/MEDS_tabular_automl/evaluation_callback.py
@@ -15,30 +15,30 @@ def on_multirun_end(self, config: DictConfig, **kwargs):
         log_fp = Path(config.model_logging.model_log_dir)
 
         try:
-            perf = pl.read_csv(log_fp / f"*/*{config.model_logging.performance_log_stem}.log")
+            performance = pl.read_csv(log_fp / f"*/*{config.model_logging.performance_log_stem}.log")
         except Exception as e:
             raise FileNotFoundError(f"Log files incomplete or not found at {log_fp}, exception {e}.")
 
-        perf = perf.sort("tuning_auc", descending=True, nulls_last=True)
-        logger.info(f"\nPerformance of the top 10 models:\n{perf.head(10)}")
+        performance = performance.sort("tuning_auc", descending=True, nulls_last=True)
+        logger.info(f"\nPerformance of the top 10 models:\n{performance.head(10)}")
 
         # get best model_fp
-        best_model = perf[0, 0]
+        best_model = performance[0, 0]
 
         logger.info(f"The best model can be found at {best_model}")
-        self.log_performance(perf[0, :])
+        self.log_performance(performance[0, :])
         # self.log_hyperparams(log_fp / best_model / f"{config.model_logging.config_log_stem}.log")
         if hasattr(config, "model_saving.delete_below_top_k") and config.delete_below_top_k >= 0:
             self.delete_below_top_k_models(
-                perf, config.model_saving.delete_below_top_k, config.model_saving.model_dir
+                performance, config.model_saving.delete_below_top_k, config.model_saving.model_dir
             )
 
-        return perf.head(1)
+        return performance.head(1)
 
-    def log_performance(self, perf):
+    def log_performance(self, best_model_performance):
         """logger.info performance of the best model with nice formatting."""
-        tuning_auc = perf["tuning_auc"][0]
-        test_auc = perf["test_auc"][0]
+        tuning_auc = best_model_performance["tuning_auc"][0]
+        test_auc = best_model_performance["test_auc"][0]
         logger.info(
             f"\nPerformance of best model:\nTuning AUC: {tuning_auc}\nTest AUC: {test_auc}",
         )
@@ -52,9 +52,9 @@ def log_hyperparams(self, best_params_fp):
         # print using OmegaConf.to_yaml
         logger.info(f"\nHyperparameters of the best model:\n{OmegaConf.to_yaml(best_params)}")
 
-    def delete_below_top_k_models(self, perf, k, model_dir):
+    def delete_below_top_k_models(self, performance, k, model_dir):
         """Save only top k models from the model directory and delete all other files."""
-        top_k_models = perf.head(k)["model_fp"].values
+        top_k_models = performance.head(k)["model_fp"].values
         for model_fp in Path(model_dir).iterdir():
             if model_fp.is_file() and model_fp.suffix != ".log" and str(model_fp) not in top_k_models:
                 model_fp.unlink()