Add references and audit reports for reviewer-suggested citations in Batch 6

Code/reports/width_optimization/3W/rbf_optimization/rbf_3W_B34_H45_TFD_W100_it8_stage1_utilization_de_summary.csv

+n_runs,min_objective,median_objective,mean_objective,std_objective,iqr_objective,median_nit,median_nfev,tw1_median,tw1_mean,tw1_std,tw1_iqr,tw2_median,tw2_mean,tw2_std,tw2_iqr,tw3_median,tw3_mean,tw3_std,tw3_iqr,n_basins,reproducibility_rate,geometry_n_basins,geometry_reproducibility_rate,dominant_basin_count,geometry_dominant_basin_count,dominant_basin_indices,geometry_dominant_basin_indices,best_basin_run_idx,best_basin_objective,best_basin_x,tw1_dominant_basin_std,tw1_dominant_basin_iqr,tw1_dominant_basin_range,tw2_dominant_basin_std,tw2_dominant_basin_iqr,tw2_dominant_basin_range,tw3_dominant_basin_std,tw3_dominant_basin_iqr,tw3_dominant_basin_range,performance_reproducibility_rate,performance_equivalent_count,performance_equivalent_indices,performance_best_objective,performance_best_run_idx,performance_relative_tolerance,performance_max_relative_error_equivalent_group,performance_objective_spread,performance_objective_iqr,n_total_runs,n_valid_runs,n_successful_runs,representative_run_idx,geometry_basin_rep_run_idx,stage1_performance_group_count
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ManuscriptR1/ComparisonSurrogatesOptimizationBDSL.bib

@@ -823,4 +823,50 @@ steel from coupon test results available. First, the theory of metal plasticity
   urldate   = {2026-04-21},
 }
 
+@Article{Sarkisian2025,
+  author  = {Sarkisian, Mark P.},
+  journal = {Structure and Infrastructure Engineering},
+  title   = {Resilient structures: materials components systems},
+  year    = {2025},
+  issn    = {1573-2479},
+  number  = {7-8},
+  pages   = {1173--1192},
+  volume  = {21},
+  doi     = {10.1080/15732479.2025.2474714},
+}
+
+@Article{Oz2025,
+  author  = {Oz, Ibrahim},
+  journal = {Structures},
+  title   = {Resilience of hospital structures under seismic loads: A case study informed by the 2023 Mara{\c{s}} earthquake},
+  year    = {2025},
+  issn    = {2352-0124},
+  pages   = {108642},
+  volume  = {74},
+  doi     = {10.1016/j.istruc.2025.108642},
+}
+
+@Article{Yao2023,
+  author  = {Yao, Yifan and Zhou, Liqi and Huang, Hua and Chen, Zhen and Ye, Yanxia},
+  journal = {Structures},
+  title   = {Cyclic performance of novel composite beam-to-column connections with reduced beam section fuse elements},
+  year    = {2023},
+  issn    = {2352-0124},
+  pages   = {842--858},
+  volume  = {50},
+  doi     = {10.1016/j.istruc.2023.02.054},
+}
+
+@Article{Yu2026,
+  author  = {Yu, Minghu and Lin, Jiekun and Zhang, Yuqiu},
+  journal = {Scientific Reports},
+  title   = {Multi-objective optimization design of linear oscillating actuator based on hybrid surrogate model},
+  year    = {2026},
+  issn    = {2045-2322},
+  number  = {1},
+  pages   = {24853},
+  volume  = {16},
+  doi     = {10.1038/s41598-026-54677-9},
+}
+
 @Comment{jabref-meta: databaseType:bibtex;}

ManuscriptR1/ComparisonSurrogatesOptimizationBDSL_R1.tex

@@ -99,7 +99,7 @@ Data-driven approaches have mainly focused on response or property prediction. C
 
 All these works demonstrate the increasing interest in applying FEM-based and data-driven approaches, as well as in combining both, to analyse, understand and optimize seismic energy dissipation devices. However, most of these studies focus either on the prediction of the hysteretic response or on maximizing energy dissipation, leaving a critical aspect insufficiently explored: the need to control local damage while maintaining adequate dissipative capacity. In practice, excessive local damage may compromise structural integrity, reduce durability and lead to premature failure, even when global energy dissipation is improved.
 
-BDSL device performance therefore depends not only on global force or total dissipated energy, but on how local deformation and damage are distributed among the individual windows and the surrounding frame. The window thicknesses exert a direct control on this distribution, because they set the relative stiffness of each dissipative region and thus the balance between window activation and the inelastic demand transferred to the frame. Nonlinear FEM can resolve these local quantities, but its cost makes repeated direct optimization impractical. A surrogate-assisted approach therefore offers a practical route to search the window-thickness design space while explicitly accounting for damage-related responses.
+BDSL device performance therefore depends not only on global force or total dissipated energy, but on how local deformation and damage are distributed among the individual windows and the surrounding frame. The window thicknesses exert a direct control on this distribution, because they set the relative stiffness of each dissipative region and thus the balance between window activation and the inelastic demand transferred to the frame. Nonlinear FEM can resolve these local quantities, but its cost makes repeated direct optimization impractical. A surrogate-assisted approach therefore offers a practical route to search the window-thickness design space while explicitly accounting for damage-related responses. Surrogate-assisted engineering optimization has also been formulated through multi-objective Pareto approaches, including hybrid surrogate models coupled with evolutionary algorithms \cite{Yu2026}, whereas the present work adopts a feasibility-first hierarchical constrained formulation.
 
 The present work addresses this gap through a damage-aware surrogate-assisted optimization methodology for window-thickness optimization within five predefined BDSL geometry families. The proposed approach combines: (i) experimentally calibrated nonlinear FEM models used as numerical ground truth; (ii) supervised and radial basis function (RBF) surrogate models trained to predict local damage and distortion indicators; (iii) a Differential Evolution (DE) optimizer; and (iv) an adaptive FEM validation and retraining loop.
 
@@ -107,7 +107,7 @@ The contribution of this study is not the use of surrogate optimization itself,
 
 The study is deliberately component-level. It optimizes the device and evaluates its cyclic response under prescribed, displacement-controlled loading, which isolates the nonlinear response of the device and provides controlled deformation histories for comparing geometry variants. It does not analyse the response of a complete building or structural system equipped with the optimized dampers.
 
-From a broader perspective, BDSL dampers are conceived as replaceable, sacrificial components that concentrate damage away from primary structural members, which can facilitate post-event inspection, repair or replacement \cite{Xiong2024}. The present study contributes to this objective at the component level by controlling where damage develops and by protecting the surrounding frame. It does not, however, quantify resilience: metrics such as downtime, repair cost or functional recovery are not computed, and system-level resilience assessment is outside the scope of this work.
+From a broader perspective, BDSL dampers are conceived as replaceable, sacrificial components that concentrate damage away from primary structural members, which can facilitate post-event inspection, repair or replacement \cite{Xiong2024,Sarkisian2025,Yao2023}. The present study contributes to this objective at the component level by controlling where damage develops and by protecting the surrounding frame. It does not, however, quantify resilience: metrics such as downtime, repair cost or functional recovery are not computed, and system-level resilience assessment is outside the scope of this work.
 
 Figure \ref{fig:MethodologyFlowChart} summarizes the proposed workflow. The different stages of the methodology, together with the surrogate modelling, optimization strategy, validation procedure and corresponding results and conclusions, are described in the following sections.
 
@@ -462,7 +462,7 @@ The main findings of this study can be summarised as follows.
 
 The scope of these findings is limited. Only the window thicknesses were optimized; window height, spacing, corner radius, frame thickness and global proportions remained fixed within each family. The study is component-level and considers a symmetric, prescribed displacement-controlled cyclic protocol. It does not reproduce irregular, asymmetric or pulse-like earthquake demands, nor record-to-record variability, and it does not quantify structural-system-level seismic performance or resilience. In addition, the results depend on the calibrated FEM model used as ground truth, TFDMap is used as a post-processing damage indicator rather than as a constitutive fracture model, and no independent experimental test set was retained. The optimized geometries are therefore FEM-validated numerical candidates rather than experimentally validated designs.
 
-Future work should extend the design space to additional geometric and mechanical variables, such as window height, window spacing, frame thickness or global device proportions, and should reassess the surrogate strategies in the resulting higher-dimensional space. Assessing the optimized devices at the structural-system level through nonlinear time-history analyses, able to quantify inter-storey drift, floor acceleration and global energy dissipation, is a necessary next step before broader design recommendations can be established. Extending the framework to asymmetric cyclic protocols or recorded seismic displacement histories, and incorporating interpretability analyses such as SHapley Additive exPlanations \cite{Lundberg2017} to identify the main geometric drivers of damage and shear-distortion performance, are also natural developments.
+Future work should extend the design space to additional geometric and mechanical variables, such as window height, window spacing, frame thickness or global device proportions, and should reassess the surrogate strategies in the resulting higher-dimensional space. Assessing the optimized devices at the structural-system level through nonlinear time-history analyses, able to quantify inter-storey drift, floor acceleration and global energy dissipation, is a necessary next step before broader design recommendations can be established~\cite{Oz2025}. Extending the framework to asymmetric cyclic protocols or recorded seismic displacement histories, and incorporating interpretability analyses such as SHapley Additive exPlanations \cite{Lundberg2017} to identify the main geometric drivers of damage and shear-distortion performance, are also natural developments.
 
 \appendix
 

R1_closed_changes_batch6C_Yao_Yu.md

+# Batch 6C — Yao 2023 and Yu 2026
+
+Minimal integration of two reviewer-suggested references approved by the authors. No unrelated text or scientific result was modified. Frozen baseline untouched; tracked version regenerated.
+
+## 1. References added
+
+| Key | Reference | DOI | Where cited |
+|---|---|---|---|
+| `Yao2023` | Yao, Y., Zhou, L., Huang, H., Chen, Z., Ye, Y. *Cyclic performance of novel composite beam-to-column connections with reduced beam section fuse elements*. Structures 50:842–858, 2023. | 10.1016/j.istruc.2023.02.054 | §1 Introduction, resilience sentence (citation group only) |
+| `Yu2026` | Yu, M., Lin, J., Zhang, Y. *Multi-objective optimization design of linear oscillating actuator based on hybrid surrogate model*. Scientific Reports 16(1):24853, 2026. | 10.1038/s41598-026-54677-9 | §1 Introduction, surrogate-assisted optimization positioning sentence (new concise sentence) |
+
+Metadata for both was verified against Crossref/publisher records and the supplied PDFs.
+
+## 2. Yao insertion
+
+- **Manuscript location:** §1 Introduction, resilience paragraph (line 110).
+- **Scientific role:** sacrificial/replaceable fuse concept; concentration of plastic damage in a designated component; protection of the surrounding connection/primary system; post-earthquake repairability. Yao studies composite beam-to-column connections with reduced-beam-section fuses, **not** BDSL dampers; it is cited only as cross-system evidence of the replaceable/sacrificial fuse design philosophy.
+- **Exact citation group (after edit):** `\cite{Xiong2024,Sarkisian2025,Yao2023}`. Sentence wording unchanged.
+
+## 3. Yu insertion
+
+- **Manuscript location:** §1 Introduction, end of the surrogate-assisted-optimization paragraph (line 102).
+- **Sentence added:** "Surrogate-assisted engineering optimization has also been formulated through multi-objective Pareto approaches, including hybrid surrogate models coupled with evolutionary algorithms \cite{Yu2026}, whereas the present work adopts a feasibility-first hierarchical constrained formulation."
+- **Methodological contrast:** the sentence explicitly identifies Yu as a **multi-objective/Pareto** formulation (hybrid surrogate + evolutionary optimizer) and states that the present work instead uses a **feasibility-first hierarchical constrained** formulation. No implication is made that Yu's application is a metallic damper or that our method is Pareto/multi-objective.
+
+## 4. Bibliography entries
+
+```bibtex
+@Article{Yao2023,
+  author  = {Yao, Yifan and Zhou, Liqi and Huang, Hua and Chen, Zhen and Ye, Yanxia},
+  journal = {Structures},
+  title   = {Cyclic performance of novel composite beam-to-column connections with reduced beam section fuse elements},
+  year    = {2023},
+  issn    = {2352-0124},
+  pages   = {842--858},
+  volume  = {50},
+  doi     = {10.1016/j.istruc.2023.02.054},
+}
+
+@Article{Yu2026,
+  author  = {Yu, Minghu and Lin, Jiekun and Zhang, Yuqiu},
+  journal = {Scientific Reports},
+  title   = {Multi-objective optimization design of linear oscillating actuator based on hybrid surrogate model},
+  year    = {2026},
+  issn    = {2045-2322},
+  number  = {1},
+  pages   = {24853},
+  volume  = {16},
+  doi     = {10.1038/s41598-026-54677-9},
+}
+```
+
+Neither key previously existed; no duplicate bibliography keys.
+
+## 5. Files modified
+
+- `ManuscriptR1/ComparisonSurrogatesOptimizationBDSL_R1.tex` — citation group at line 110; one new positioning sentence at line 102.
+- `ManuscriptR1/ComparisonSurrogatesOptimizationBDSL.bib` — two new entries.
+- `ManuscriptR1/ComparisonSurrogatesOptimizationBDSL_R1_changes.tex` — regenerated.
+- `R1_closed_changes_batch6C_Yao_Yu.md` — this report.
+
+No other reviewer-suggested reference was added. `ComparisonSurrogatesOptimizationBDSL_submitted.tex` was not modified.
+
+## Compilation
+
+- `ComparisonSurrogatesOptimizationBDSL_R1.tex`: 22 pages, no undefined citations/references, both references render.
+- `ComparisonSurrogatesOptimizationBDSL_R1_changes.tex`: 24 pages, no undefined citations/references, both references render, tracked changes render.

R1_closed_changes_batch6_references.md

+# Batch 6 — Reviewer-Suggested References
+
+Minimal bibliographic/manuscript integration. References were selected according to **scientific relevance**, not because reviewers suggested them. No scientific calculation, no unrelated manuscript modification. Frozen baseline untouched; tracked version regenerated.
+
+---
+
+## 1. References assessed
+
+Audit source: `Reviewer_reference_audit.md`, based on `Review/referencia_reviewers/` (14 PDFs + index workbook listing 20 suggested references: R2=4, R3=4, R4=12). Author decision: consider R3-01 and R3-02; exclude R2-01, R2-02, R2-03, R2-04, R3-03, R3-04 and the whole R4 block.
+
+## 2. References added
+
+Two citation-only additions:
+
+| Key | Reference | DOI | Where cited |
+|---|---|---|---|
+| `Sarkisian2025` | Sarkisian, M.P. *Resilient structures: materials components systems*. Structure and Infrastructure Engineering 21(7-8):1173–1192, 2025. | 10.1080/15732479.2025.2474714 | §1 Introduction, resilience paragraph (added to the existing `\cite{Xiong2024}` group) |
+| `Oz2025` | Oz, I. *Resilience of hospital structures under seismic loads: A case study informed by the 2023 Maraş earthquake*. Structures 74:108642, 2025. | 10.1016/j.istruc.2025.108642 | §7 Conclusions, future-work sentence on structural-system nonlinear time-history analysis |
+
+Both entries were added to `ComparisonSurrogatesOptimizationBDSL.bib`; keys did not previously exist; no duplicate keys in the bibliography.
+
+*Note on the Oz author name:* Crossref deposits the author fields for 10.1016/j.istruc.2025.108642 as given "OZ", family "Ibrahim", whereas the supplied PDF byline reads "OZ Ibrahim" and the same author appears as "Ibrahim Oz" on the reviewer's sibling reference (R3-04). The conventional form `author = {Oz, Ibrahim}` was used; the publisher-record ordering anomaly is recorded here for transparency.
+
+## 3. Sarkisian metadata verification
+
+- The **provided PDF** (`Review/referencia_reviewers/R3/1.pdf`) is the 2023 IALCCE proceedings paper *"Resilient structures: Materials | Components | Systems"* (Life-Cycle of Structures and Infrastructure Systems, Biondini & Frangopol Eds., 2023).
+- The **reviewer index** cites a 2025 journal article with DOI 10.1080/15732479.2025.2474714.
+- **Crossref verification** of the DOI returned: title "Resilient structures: materials components systems", author Mark P. Sarkisian, journal *Structure and Infrastructure Engineering*, volume 21, issue 7-8, pages 1173–1192, published online 2025-03-14 (print 2025-08-03), publisher Informa UK Limited.
+- **Conclusion:** the 2025 journal article is a distinct publication from the 2023 proceedings paper. Because the reviewer index cites the journal DOI and the DOI metadata is verified, the **2025 journal article** was added (not the 2023 proceedings version). The proceedings PDF was used only to understand the content, not as the cited source.
+
+Verified metadata added:
+`Sarkisian, Mark P. — Resilient structures: materials components systems — Structure and Infrastructure Engineering — 2025 — 21(7-8) — 1173–1192 — doi:10.1080/15732479.2025.2474714`.
+
+## 4. Manuscript insertion points
+
+- **Sarkisian2025** — §1 Introduction, sentence: "…BDSL dampers are conceived as replaceable, sacrificial components that concentrate damage away from primary structural members, which can facilitate post-event inspection, repair or replacement \cite{Xiong2024,Sarkisian2025}." Citation only; the resilience discussion was already bounded in Batch 3 and was not expanded.
+- **Oz2025** — §7 Conclusions, future-work sentence: "Assessing the optimized devices at the structural-system level through nonlinear time-history analyses, able to quantify inter-storey drift, floor acceleration and global energy dissipation, is a necessary next step before broader design recommendations can be established~\cite{Oz2025}." Citation only; the reference supports the *type of future analysis*, not the current BDSL results.
+
+**No new sentence or paragraph was added solely to accommodate a citation.** Both are additions to citation groups in existing sentences. No quantitative-resilience claim was introduced.
+
+## 5. References deliberately not added
+
+| Reviewer ref. | Decision | Main reason |
+|---|---|---|
+| R2-01 (Yao et al., RBS fuse connections) | Not added | Different structural system; sacrificial-fuse concept already supported by better-matched `Xiong2024`/`Motamedi2018` (duplicative). |
+| R2-02 (Wang et al., bridge-pier arched links) | Not added | No document supplied; and the revised manuscript no longer interprets the shear-distortion indicator as actual dissipated energy, so this reference is not required. |
+| R2-03 (Yu et al., actuator multi-objective surrogate) | Not added | Different application and Pareto multi-objective paradigm; present formulation is feasibility-first hierarchical. |
+| R2-04 (Zhang et al., CFRP tunnel joints) | Not added | Cross-domain experimental/numerical validation; device-matched references already support the statement. |
+| R3-03 (Liao et al., intensity-measure selection) | Not added | Probabilistic demand/fragility/IM selection; outside the component-optimization scope. |
+| R3-04 (Oz et al., tunnel under train loading) | Not added | Unrelated geotechnical/tunnel dynamics. |
+| R4-01, R4-02, R4-03, R4-04, R4-07, R4-08, R4-10 | Not added | Generic FEM studies of FGM/porous/CNT beams, plates, shells and masonry; no connection to metallic dampers, cyclic plasticity, shear links, local damage indicators or surrogate optimization. |
+| R4-05, R4-06, R4-09, R4-11, R4-12 | Not added | No PDFs retrieved (author decision not to retrieve); same generic FEM/advanced-materials family. |
+
+## 6. Scientific rationale
+
+The present study is a component-level, feasibility-first surrogate-assisted window-thickness optimization of BDSL dampers. The excluded references either duplicate better-matched existing citations, address unrelated structural systems or optimization paradigms, or belong to generic advanced-materials FEM literature that would artificially broaden the Introduction. Only two references were judged to genuinely strengthen existing, bounded statements: a general resilience reference for the sacrificial-component framing, and a nonlinear time-history study for the future-work limitation on structural-system assessment. Reviewer suggestion alone was not treated as sufficient grounds for inclusion.
+
+### Compact exclusion table
+
+| Reviewer ref. | Decision | Main reason |
+|---|---|---|
+| R2-01 | Not added | Duplicative of better-matched substitute concepts; different system. |
+| R2-02 | Not added | No document; energy-equivalence interpretation removed. |
+| R2-03 | Not added | Different application and optimization paradigm. |
+| R2-04 | Not added | Cross-domain; validation already supported. |
+| R3-01 | **Added** | Supports bounded resilience framing. |
+| R3-02 | **Added** | Supports system-level NLTHA future work. |
+| R3-03 | Not added | IM selection/fragility, out of scope. |
+| R3-04 | Not added | Tunnel/train dynamics, unrelated. |
+| R4-01…R4-12 | Not added | Generic FEM of FGM/CNT/porous structures, unrelated. |
+
+## Compilation
+
+- `ComparisonSurrogatesOptimizationBDSL_R1.tex`: compiles, 22 pages, no undefined citations/references, both new references present in the `.bbl`, no duplicate bibliography keys.
+- `ComparisonSurrogatesOptimizationBDSL_R1_changes.tex`: compiles, 24 pages, no undefined citations/references, both new references present, tracked changes render (63 additions, 47 deletions).

Reviewer_reference_Yao_Yu_audit.md

+# Focused audit: Yao 2023 and Yu 2026
+
+Read-only reassessment against the current `ManuscriptR1/ComparisonSurrogatesOptimizationBDSL_R1.tex`. No manuscript, bibliography or reviewer-response file was modified.
+
+## Yao et al. 2023
+
+- **Reference:** Yao Y., Zhou L., Huang H., Chen Z., Ye Y. (2023), *Cyclic performance of novel composite beam-to-column connections with reduced beam section fuse elements*, Structures 50, 842–858, doi:10.1016/j.istruc.2023.02.054.
+- **Relevant concept:** The paper designs a reduced-beam-section (RBS) fuse in a novel composite beam-to-column connection explicitly around *post-earthquake resilience and damage control*: plasticity is concentrated in a replaceable/repairable member to protect the joint, and the connection is intended to be recoverable after an earthquake. This is the same design philosophy as our BDSL "concentrate damage in the replaceable windows, protect the surrounding frame" argument, applied to a different structural system (steel–concrete composite frame connections).
+- **Best manuscript insertion point:** §1 Introduction, resilience sentence (line 110):
+  > "From a broader perspective, BDSL dampers are conceived as replaceable, sacrificial components that concentrate damage away from primary structural members, which can facilitate post-event inspection, repair or replacement \cite{Xiong2024,Sarkisian2025}."
+  Proposed group: `\cite{Xiong2024,Sarkisian2025,Yao2023}` — **CITATION ONLY**. No wording change required.
+  A secondary, weaker option is line 88 ("Their configuration concentrates inelastic demand in replaceable components… \cite{Malley1984,Okazaki2007}"), but the resilience sentence is the closer match (damage control, replaceability, protection of the joint/primary members).
+- **Overlap with existing references:** `Xiong2024` (replaceable steel links as structural fuses, rapid recovery) and `Motamedi2018` (repairable hysteretic fuse) already support the core concept for metallic damper-type components. Yao is therefore **largely duplicative** but adds genuine cross-system breadth (a beam-to-column connection with an RBS fuse), showing that sacrificial/replaceable fuse components are a general seismic design philosophy rather than a BDSL-specific idea. It is not needed for scientific correctness.
+- **Recommendation:** **OPTIONAL** (citation only). Add if the authors wish to broaden the sacrificial-fuse evidence across structural systems; the manuscript is adequately supported without it.
+
+## Yu et al. 2026
+
+- **Reference:** Yu M., Lin J., Zhang Y. (2026), *Multi-objective optimization design of linear oscillating actuator based on hybrid surrogate model*, Scientific Reports 16, 24853, doi:10.1038/s41598-026-54677-9.
+- **Relevant concept:** A hybrid surrogate model (weighted combination of four data-driven surrogates) coupled to an improved NSGA-II for **multi-objective Pareto optimization** of a **linear oscillating actuator**. It is a surrogate-assisted engineering design optimization study, but with an electromagnetic actuator application and a Pareto/multi-objective formulation.
+- **Best manuscript insertion point:** There is **no natural existing sentence** in R1 where this paper fits:
+  - The optimization-literature paragraph (§1, line 96) reviews optimization of **metallic dampers/shear links**; inserting an actuator study there would inappropriately broaden the scope.
+  - The surrogate-optimization motivation sentences (lines 92, 102) are general and not citation-bearing for alternative formulations.
+  - The methodology positioning sentence (§4.4, line 342: "Compared with a scalar objective that combines damage penalties and a performance term, the constrained hierarchical formulation removes the need for arbitrary relative weights…") contrasts our formulation with **penalty-based** formulations, not with multi-objective/Pareto ones.
+  A citation-only insertion is therefore not possible; it would require a new clause or sentence.
+- **Methodological differences:** Yu uses a Pareto multi-objective formulation (NSGA-II) with adaptive weighting of sub-surrogates; our study uses a **feasibility-first hierarchical constrained formulation** (hard window/frame damage-screening constraints, then a maximum-window-activation stage and a shear-distortion performance stage). The applications also differ (electromagnetic actuator vs. steel shear-link damper).
+- **Risk of misrepresentation:** Citing Yu close to our methodology could imply that our work is (or should be) a Pareto/multi-objective study. Avoiding that would require an explicit positioning clause such as "surrogate-assisted optimization has been formulated both as multi-objective Pareto problems [Yu2026] and as feasibility-first constrained problems", i.e. text created specifically to host the citation.
+- **Recommendation:** **DO NOT ADD** (primary). Fallback only if the authors explicitly want to engage this reviewer request: a **minor sentence expansion** at the end of §1 line 102 (or §4.4 line 342) stating that surrogate-assisted optimization admits different formulations (multi-objective Pareto vs. feasibility-first hierarchical) and citing Yu as an example of the former. This is not recommended, because it broadens the scope to an unrelated application and the manuscript's methodological positioning is already clear.
+
+## Final recommendation
+
+| Reference | Recommendation | Best section | Change type | Main reason |
+|---|---|---|---|---|
+| Yao2023 | OPTIONAL | §1 Introduction, resilience sentence (line 110) | Citation only | Directly supports the sacrificial/replaceable fuse and damage-confinement concept; adds cross-system breadth but is largely duplicative of `Xiong2024`/`Motamedi2018`. |
+| Yu2026 | DO NOT ADD | — (no natural location) | — (would require new text) | Different application (actuator) and paradigm (Pareto NSGA-II); no natural insertion point; risks misrepresenting the present feasibility-first hierarchical formulation. |
+
+**Proposed BibTeX keys (not added):** `Yao2023`, `Yu2026`. Neither exists in `ComparisonSurrogatesOptimizationBDSL.bib`; no duplicate keys.
+
+## Bibliography check
+
+- `Yao2023` — absent from the bibliography and not cited in R1.
+- `Yu2026` — absent from the bibliography and not cited in R1.
+- No alternative keys for either work were found; no duplicates would be introduced.