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20 changes: 10 additions & 10 deletions mteb/abstasks/Image/AbsTaskImageClassification.py
Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
from typing import Any

import numpy as np
from PIL import ImageFile

from mteb.abstasks.TaskMetadata import HFSubset

Expand All @@ -16,6 +17,8 @@
)
from ..AbsTask import AbsTask, ScoresDict

ImageFile.LOAD_TRUNCATED_IMAGES = True

logger = logging.getLogger(__name__)


Expand Down Expand Up @@ -133,7 +136,7 @@ def _evaluate_subset(
"=" * 10 + f" Experiment {i+1}/{self.n_experiments} " + "=" * 10
)
# Bootstrap `self.samples_per_label` samples per label for each split
X_sampled, y_sampled, idxs = self._undersample_data(
undersampled_train, idxs = self._undersample_data(
train_split,
self.label_column_name,
self.samples_per_label,
Expand All @@ -142,8 +145,7 @@ def _evaluate_subset(

if self.method == "kNN":
evaluator = ImagekNNClassificationEvaluator(
X_sampled,
y_sampled,
undersampled_train,
eval_split,
self.image_column_name,
self.label_column_name,
Expand All @@ -153,8 +155,7 @@ def _evaluate_subset(
)
elif self.method == "kNN-pytorch":
evaluator = ImagekNNClassificationEvaluatorPytorch(
X_sampled,
y_sampled,
undersampled_train,
eval_split,
self.image_column_name,
self.label_column_name,
Expand All @@ -164,8 +165,7 @@ def _evaluate_subset(
)
elif self.method == "logReg":
evaluator = ImagelogRegClassificationEvaluator(
X_sampled,
y_sampled,
undersampled_train,
eval_split,
self.image_column_name,
self.label_column_name,
Expand Down Expand Up @@ -199,15 +199,15 @@ def _undersample_data(
label_counter = defaultdict(int)
selected_indices = []

labels = dataset_split[label_column_name]
for i in idxs:
label = dataset_split[i][label_column_name]
label = labels[i]
if label_counter[label] < samples_per_label:
selected_indices.append(i)
label_counter[label] += 1

undersampled_dataset = dataset_split.select(selected_indices)
return (
undersampled_dataset[self.image_column_name],
undersampled_dataset[self.label_column_name],
undersampled_dataset,
idxs,
)
59 changes: 22 additions & 37 deletions mteb/evaluation/evaluators/Image/ClassificationEvaluator.py
Original file line number Diff line number Diff line change
@@ -1,11 +1,12 @@
from __future__ import annotations

import logging
import math
import os
from typing import Any

import numpy as np
import torch
from datasets import Dataset
from sklearn.linear_model import LogisticRegression
from sklearn.metrics import (
accuracy_score,
Expand Down Expand Up @@ -55,8 +56,7 @@ def custom_collate_fn(batch):
class ImagekNNClassificationEvaluator(Evaluator):
def __init__(
self,
images_train,
y_train,
dataset_train,
dataset_test,
image_column_name,
label_column_name,
Expand All @@ -69,17 +69,13 @@ def __init__(
super().__init__(**kwargs)

if limit is not None:
images_train = images_train[:limit]
y_train = y_train[:limit]
dataset_test = dataset_test[:limit]
dataset_train = dataset_train.select(list(range(limit)))

self.images_train = images_train
self.y_train = y_train
self.dataset_train = ImageDataset(
Dataset.from_dict({"image": images_train, "label": y_train}),
image_column_name=image_column_name,
transform=transform,
dataset_train, image_column_name=image_column_name, transform=transform
)
self.y_train = dataset_train[label_column_name]

self.dataset_test = ImageDataset(
dataset_test, image_column_name=image_column_name, transform=transform
)
Expand All @@ -102,7 +98,7 @@ def __call__(self, model, test_cache=None):
batch_size=self.encode_kwargs["batch_size"],
shuffle=False,
collate_fn=custom_collate_fn,
num_workers=16,
num_workers=min(math.floor(os.cpu_count() / 2), 16),
)
X_train = model.get_image_embeddings(
dataloader_train, batch_size=self.encode_kwargs["batch_size"]
Expand All @@ -111,7 +107,7 @@ def __call__(self, model, test_cache=None):
self.dataset_test,
batch_size=self.encode_kwargs["batch_size"],
shuffle=False,
num_workers=16,
num_workers=min(math.floor(os.cpu_count() / 2), 16),
)
if test_cache is None:
X_test = model.get_image_embeddings(
Expand Down Expand Up @@ -145,8 +141,7 @@ def __call__(self, model, test_cache=None):
class ImagekNNClassificationEvaluatorPytorch(Evaluator):
def __init__(
self,
images_train,
y_train,
dataset_train,
dataset_test,
image_column_name,
label_column_name,
Expand All @@ -158,17 +153,13 @@ def __init__(
):
super().__init__(**kwargs)
if limit is not None:
images_train = images_train[:limit]
y_train = y_train[:limit]
dataset_test = dataset_test[:limit]
dataset_train = dataset_train.select(list(range(limit)))

self.images_train = images_train
self.dataset_train = ImageDataset(
Dataset.from_dict({"image": images_train, "label": y_train}),
image_column_name=image_column_name,
transform=transform,
dataset_train, image_column_name=image_column_name, transform=transform
)
self.y_train = y_train
self.y_train = dataset_train[label_column_name]

self.dataset_test = ImageDataset(
dataset_test, image_column_name=image_column_name, transform=transform
)
Expand All @@ -192,7 +183,7 @@ def __call__(self, model: Encoder, test_cache=None):
batch_size=self.encode_kwargs["batch_size"],
shuffle=False,
collate_fn=custom_collate_fn,
num_workers=16,
num_workers=min(math.floor(os.cpu_count() / 2), 16),
)
X_train = model.get_image_embeddings(
dataloader_train, batch_size=self.encode_kwargs["batch_size"]
Expand All @@ -202,7 +193,7 @@ def __call__(self, model: Encoder, test_cache=None):
self.dataset_test,
batch_size=self.encode_kwargs["batch_size"],
shuffle=False,
num_workers=16,
num_workers=min(math.floor(os.cpu_count() / 2), 16),
)
if test_cache is None:
X_test = model.get_image_embeddings(
Expand Down Expand Up @@ -311,8 +302,7 @@ def _dot_score(a: Tensor, b: Tensor):
class ImagelogRegClassificationEvaluator(Evaluator):
def __init__(
self,
images_train,
y_train,
dataset_train,
dataset_test,
image_column_name,
label_column_name,
Expand All @@ -329,17 +319,12 @@ def __init__(
self.encode_kwargs["batch_size"] = 32

if limit is not None:
images_train = images_train[:limit]
y_train = y_train[:limit]
dataset_test = dataset_test[:limit]
dataset_train = dataset_train.select(list(range(limit)))

self.images_train = images_train
self.y_train = y_train
self.dataset_train = ImageDataset(
Dataset.from_dict({"image": images_train, "label": y_train}),
image_column_name=image_column_name,
transform=transform,
dataset_train, image_column_name=image_column_name, transform=transform
)
self.y_train = dataset_train[label_column_name]
self.dataset_test = ImageDataset(
dataset_test, image_column_name=image_column_name, transform=transform
)
Expand All @@ -361,7 +346,7 @@ def __call__(self, model, test_cache=None):
batch_size=self.encode_kwargs["batch_size"],
shuffle=False,
collate_fn=custom_collate_fn,
num_workers=16,
num_workers=min(math.floor(os.cpu_count() / 2), 16),
)
X_train = model.get_image_embeddings(
dataloader_train, batch_size=self.encode_kwargs["batch_size"]
Expand All @@ -371,7 +356,7 @@ def __call__(self, model, test_cache=None):
batch_size=self.encode_kwargs["batch_size"],
shuffle=False,
collate_fn=custom_collate_fn,
num_workers=16,
num_workers=min(math.floor(os.cpu_count() / 2), 16),
)
if test_cache is None:
X_test = model.get_image_embeddings(
Expand Down
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