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文献紹介
CSN | Learning Type-Aware
Embeddings for Fashion Compatibility
author: Vasileva, Mariya I et al.
2018
abstract
- outfit recommendation の model の提案
- 評価用の新しい厳格なデータセットを提案
- similarity と compatibility を同時に学習
- comatibility の学習をcategory の pair-wise に分けることで、improper triangle の
問題を解決
- より厳しい新しいデータセットで両taskともにSOTA
Table of Contents
- Introduction
- Method
- Experiments & Results
- Conclusion
Introduction - 先行研究の問題点
- improper triangle
- test dataset が簡単 (Experimentsのとこで説明する。)
Introduction - Related Work
- [(A. Veit et al. 2015) SiameseNet | Learning Visual Clothing Style with
Heterogeneous Dyadic Co-occurrences.](https://arxiv.org/pdf/1509.07473.pdf)
Introduction - Improper Triangle
図の出典: [(K. Yamaguchi et al. 2015) Mix and Match: Joint
Model for Clothing and Attribute
Recognition.](http://vision.is.tohoku.ac.jp/~kyamagu)
- compatibility では以下の三角不等式
が成り立つわけではない。
- 「tops A と bottoms B が compatible」かつ
「bottoms B と shoes C が compatible」→
「tops A と shoes C が compatible」
Introduction - Related Work
- [(X. Han et al. 2017) Bi-LSTM | Learning Fashion Compatibility with
Bidirectional LSTMs.](https://arxiv.org/pdf/1707.05691.pdf)
Method - Data
- 大元はPolyvore
- outfit = item image
sequence
- text
- 以下の 3 variants を用い
た。
- Maryland Polyvore (X. Han
et al. 2017)
- test data が簡単
- Polyvore Outfits-D (ours)
- Polyvore Outfits (ours)
Method - Data
- Maryland Polyvore は
- 定量的評価をするには test data が不適切。簡単。(Experimentsのところで説明する。)
- テキストの情報が貧弱。
Method - Model: CSN
- Veit, A., Belongie, S., Karaletsos, T.: Conditional similarity networks. In:
CVPR. (2017) を参考にした。
Method - CSN の input/output
image x
category
u: bottoms
v: tops
text t
comatible
image-text/text-text
distance
image-image
distance
Method - Model: CSN
- 3つのmoduleからなる
- similarity
- VSE = Visual Semantic Embedding: text と image を意味が近いと距離が近くなるよう
embed
- Sim: SiameseNetで、同じcategoryどうしのtext/imageを近くにembed
- compatibility
- Type-Specific Embed
- Sim の embedded space から category pair-wise な space に projectionして、
- compatible な image どうしを近づけて embed
Method - VSE: Visual Semantic Embedding
image x
comatible
自分のimage と text は近づけ、
自分以外の text は遠ざける。
image だけでなく、textの情報も与えることで、より
similarなものが近くなるよう embed。
Method - Sim
image x
comatible
category が同じ image/text どうしを
近づけ、違うcategoryは遠ざける。
先行研究では、ここで compatibilityの
triplet lossをとってた。
Method - Type-Specific Projection
image x
comatible
projection で category の pair-wise
space に分けてからcompatibility の
sim learning
Method - Type-Specific Projection
Method - Model: CSN
- 3つのmoduleからなる(おさらい)
- similarity
- VSE = Visual Semantic Embedding: text と image を意味が近いと距離が近くなるよう
embed
- Sim: SiameseNetで、同じcategoryどうしのtext/imageを近くにembed
- compatibility
- Type-Specific Embed
- Sim の embedded space から category pair-wise な space に projectionして、
- compatible な image どうしを近づけて embed
Experiments - Evaluation - task & metric
- 2 task
- FITB = Fill in the Blank
- Compatibility Prediction
- 5 dataset
- Maryland (All Negatives)
- Maryland (Composition Filtering)
- Maryland (Category-Aware Negative) 上と同じ?
- Polyvore Outfits
- Polyvore Outfits-D
Experiments - task(1/2) - FITB
- 1 correct, 3 wrong の中から compatible な correct を選ぶ
- metric: Accuracy
Experiments - task(2/2) - Compatibility Prediction
- compatible/imconpatible な outfit を binary classification
- compatible (positive sample)
- Polyvore 上の outfit は全てcompatible とする。
- incompatible (negative sample)
- dataset の種類により、samplingの仕方が違う。
- metric: AUC
- Maryland (All Negatives)
- Maryland (Composition Filtering): Maryland の test data では、
- FITB: 候補 item が明らかに違う category → correct item の予測が簡単。
- Compat. Pred.: categoryの重複や欠損がある negative outfit → imcompatible と予測するのが
簡単。
- 簡単なのものを削除
Experiments (1/3) - Maryland
Results
Experiments(2/3) - Category-Aware Negative
- Maryland (Category-Aware Negative): Maryland の test data では、
- FITB: 候補 item が明らかに違う category → correct item の予測が簡単。
- Compat. Pred.: categoryの重複や欠損がある outfit → imcompatible と予測するのが簡単。
- 簡単なものを削除するだけでなく、 categoryを指定してnegative sampling する。
Results
Experiments(3/3) - Polyvore Outfits(-D)
- item数/outfit を増やした。
- text 情報も増やした。
- negative sampling は category-aware の方法。
- D: trainとtestでitemどうしの被りもなし。
Results
Results - Similar
Results - Compatible
Results - Outfit Generation
Conclusion
- outfit recommendation の model の提案
- 評価用の新しい厳格なデータセットを提案
- similarity と compatibility を同時に学習
- comatibility の学習をcategory の pair-wise に分けることで、improper triangle の
問題を解決
- より厳しい新しいデータセットで両taskともにSOTA

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20180420 csn learning type-aware embeddings for fashion compatibility

  • 1. 文献紹介 CSN | Learning Type-Aware Embeddings for Fashion Compatibility author: Vasileva, Mariya I et al. 2018
  • 2. abstract - outfit recommendation の model の提案 - 評価用の新しい厳格なデータセットを提案 - similarity と compatibility を同時に学習 - comatibility の学習をcategory の pair-wise に分けることで、improper triangle の 問題を解決 - より厳しい新しいデータセットで両taskともにSOTA
  • 3. Table of Contents - Introduction - Method - Experiments & Results - Conclusion
  • 4. Introduction - 先行研究の問題点 - improper triangle - test dataset が簡単 (Experimentsのとこで説明する。)
  • 5. Introduction - Related Work - [(A. Veit et al. 2015) SiameseNet | Learning Visual Clothing Style with Heterogeneous Dyadic Co-occurrences.](https://arxiv.org/pdf/1509.07473.pdf)
  • 6. Introduction - Improper Triangle 図の出典: [(K. Yamaguchi et al. 2015) Mix and Match: Joint Model for Clothing and Attribute Recognition.](http://vision.is.tohoku.ac.jp/~kyamagu) - compatibility では以下の三角不等式 が成り立つわけではない。 - 「tops A と bottoms B が compatible」かつ 「bottoms B と shoes C が compatible」→ 「tops A と shoes C が compatible」
  • 7. Introduction - Related Work - [(X. Han et al. 2017) Bi-LSTM | Learning Fashion Compatibility with Bidirectional LSTMs.](https://arxiv.org/pdf/1707.05691.pdf)
  • 8. Method - Data - 大元はPolyvore - outfit = item image sequence - text - 以下の 3 variants を用い た。 - Maryland Polyvore (X. Han et al. 2017) - test data が簡単 - Polyvore Outfits-D (ours) - Polyvore Outfits (ours)
  • 9. Method - Data - Maryland Polyvore は - 定量的評価をするには test data が不適切。簡単。(Experimentsのところで説明する。) - テキストの情報が貧弱。
  • 10. Method - Model: CSN - Veit, A., Belongie, S., Karaletsos, T.: Conditional similarity networks. In: CVPR. (2017) を参考にした。
  • 11. Method - CSN の input/output image x category u: bottoms v: tops text t comatible image-text/text-text distance image-image distance
  • 12. Method - Model: CSN - 3つのmoduleからなる - similarity - VSE = Visual Semantic Embedding: text と image を意味が近いと距離が近くなるよう embed - Sim: SiameseNetで、同じcategoryどうしのtext/imageを近くにembed - compatibility - Type-Specific Embed - Sim の embedded space から category pair-wise な space に projectionして、 - compatible な image どうしを近づけて embed
  • 13. Method - VSE: Visual Semantic Embedding image x comatible 自分のimage と text は近づけ、 自分以外の text は遠ざける。 image だけでなく、textの情報も与えることで、より similarなものが近くなるよう embed。
  • 14. Method - Sim image x comatible category が同じ image/text どうしを 近づけ、違うcategoryは遠ざける。 先行研究では、ここで compatibilityの triplet lossをとってた。
  • 15. Method - Type-Specific Projection image x comatible projection で category の pair-wise space に分けてからcompatibility の sim learning
  • 17. Method - Model: CSN - 3つのmoduleからなる(おさらい) - similarity - VSE = Visual Semantic Embedding: text と image を意味が近いと距離が近くなるよう embed - Sim: SiameseNetで、同じcategoryどうしのtext/imageを近くにembed - compatibility - Type-Specific Embed - Sim の embedded space から category pair-wise な space に projectionして、 - compatible な image どうしを近づけて embed
  • 18. Experiments - Evaluation - task & metric - 2 task - FITB = Fill in the Blank - Compatibility Prediction - 5 dataset - Maryland (All Negatives) - Maryland (Composition Filtering) - Maryland (Category-Aware Negative) 上と同じ? - Polyvore Outfits - Polyvore Outfits-D
  • 19. Experiments - task(1/2) - FITB - 1 correct, 3 wrong の中から compatible な correct を選ぶ - metric: Accuracy
  • 20. Experiments - task(2/2) - Compatibility Prediction - compatible/imconpatible な outfit を binary classification - compatible (positive sample) - Polyvore 上の outfit は全てcompatible とする。 - incompatible (negative sample) - dataset の種類により、samplingの仕方が違う。 - metric: AUC
  • 21. - Maryland (All Negatives) - Maryland (Composition Filtering): Maryland の test data では、 - FITB: 候補 item が明らかに違う category → correct item の予測が簡単。 - Compat. Pred.: categoryの重複や欠損がある negative outfit → imcompatible と予測するのが 簡単。 - 簡単なのものを削除 Experiments (1/3) - Maryland
  • 23. Experiments(2/3) - Category-Aware Negative - Maryland (Category-Aware Negative): Maryland の test data では、 - FITB: 候補 item が明らかに違う category → correct item の予測が簡単。 - Compat. Pred.: categoryの重複や欠損がある outfit → imcompatible と予測するのが簡単。 - 簡単なものを削除するだけでなく、 categoryを指定してnegative sampling する。
  • 25. Experiments(3/3) - Polyvore Outfits(-D) - item数/outfit を増やした。 - text 情報も増やした。 - negative sampling は category-aware の方法。 - D: trainとtestでitemどうしの被りもなし。
  • 29. Results - Outfit Generation
  • 30. Conclusion - outfit recommendation の model の提案 - 評価用の新しい厳格なデータセットを提案 - similarity と compatibility を同時に学習 - comatibility の学習をcategory の pair-wise に分けることで、improper triangle の 問題を解決 - より厳しい新しいデータセットで両taskともにSOTA