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REVIEW 4 major objections 5 minor 154 references

Improving Data and Parameter Efficiency of Neural Language Models Using Representation Analysis

T0 review · 4 major / 5 minor · reviewed 2026-08-06 · deepseek-v4-flash

Pith's one-line read This thesis argues that representation smoothness is the lever: regularizing the Jacobian and Hessian norms of transformer layers improves generalization, calibration, and data and parameter efficiency of neural language models.

desk verdict JACHESS is a genuine and promising regularization method backed by unusually careful GLUE experiments, but the Hutchinson estimator details and dev-set tuning leave the smoothness mechanism underdetermined. read the letter →

arxiv 2507.12004 v1 pith:S2IAQFJN submitted 2025-07-16 cs.CL

classification cs.CL
keywords neurallanguagemodelsrepresentationanalysisdataefficiencyparameteractivelearningweaksupervisionin-contextJacobian-Hessianregularization
verification ladder T0 review T1 audit T2 compute T3 formal

The pith

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The reading

The thesis argues that the internal representations of neural language models carry information about generalization, robustness, and calibration, and that deliberately making those representations smoother improves all three. Its headline method, JACHESS, adds a penalty on the Jacobian and Hessian norms of transformer layers during fine-tuning; on the GLUE benchmark it reports average gains of 2 to 4.5 percentage points over standard fine-tuning and over other regularizers, together with better robustness to token corruption and embedding perturbations and better-calibrated confidence scores. The same smoothness signal is then reused as a stopping rule that needs no labeled validation set, as a guide for combining active learning with parameter-efficient fine-tuning, and as the basis of a weak-supervision framework for in-context learning. A reader should care because the paper points to one measurable property that can be optimized cheaply, potentially reducing both annotation effort and compute in low-resource settings.

What carries the argument

The load-bearing object is the layer-wise Jacobian-Hessian regularization term of JACHESS, Eq. (4.1): $\sum_{k=1}^{K}\big(\lambda^{(k)}_1 \|J^{(k)}\|_F + \lambda^{(k)}_2 \sum_{d\in D^{(k)}} \|H^{(k)}_d\|_F\big)$. Here the Jacobian $J^{(k)}$ is the derivative of a transformer layer's output with respect to its input token embeddings and $H^{(k)}_d$ is the Hessian of one output dimension; bounding their Frobenius norms acts as a surrogate for Lipschitz smoothness of the representation map. Hutchinson's estimator replaces the intractable full matrices with Monte Carlo estimates from random normal vectors, and a dual-mode procedure alternates the task loss on labeled data with smoothness-only minimization on a separate unlabeled pool, which the experiments report as the strongest configuration.

What would settle it

Take a small transformer where the full Jacobian and Hessian matrices are computable, fine-tune it with JACHESS, and check whether the true Frobenius norms actually decrease and whether average GLUE gains track that decrease; if the gains persist while the true norms stay flat or rise, the smoothness mechanism is not the operative cause. Similarly, BEAST's stopping decisions can be compared against oracle stopping on a held-out set: if the Besov-index stopping points consistently diverge from the validation-optimal points, the smoothness proxy is not carrying the argument.

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Extended reading notes

Core claim

The paper's central claim is that enforcing smoothness in the hidden representations of transformer language models improves generalization and calibration without sacrificing in-distribution accuracy. JACHESS implements this by adding, for each layer, a penalty on the Frobenius norms of the layer's input-output Jacobian and Hessian matrices, estimated with Hutchinson's random projections and with a random subset of output dimensions for the Hessian; the regularization factors are set in proportion to the base model's own pre-fine-tuning layer smoothness. Trained in a dual mode that alternates the supervised loss with regularization on a separate unlabeled pool, JACHESS is reported to beat standard fine-tuning, L2, TAPT, SAM, Jacobian regularization, and Cross-Hölder regularization on average GLUE scores by 2 to 4.5 percentage points, with the largest gains on OPT-6.7B and Llama-2-7B, and to lower Brier score and expected calibration error across binary GLUE tasks. The thesis then carries the same smoothness concept into efficiency: Besov-measured smoothness drives BEAST early stopping without labeled validation data, and the integration of active learning with parameter-efficient fine-tuning shows that PEFT methods outperform full fine-tuning in low-resource active-learning settings while preferring moderately hard examples and staying closer to the pretrained model.

Load-bearing premise

The load-bearing premise is that Hutchinson's estimator, with a small number of random projections and sampled output dimensions, estimates the Jacobian and Hessian Frobenius norms accurately enough that minimizing those estimates genuinely enforces representation smoothness, so the reported gains in generalization and calibration are due to smoothness and not to artifacts of the stochastic approximation.

Editorial extensions

If this is right

  • If JACHESS works as reported, fine-tuning a transformer language model with smoothness penalties becomes a cheap add-on: with 1000 unlabeled instances the reported training-cost increase is about 1.22x, while the average GLUE score rises.
  • Validation-free Besov early stopping would remove the labeled held-out set from fine-tuning and active-learning pipelines, which matters for privacy-sensitive and low-resource tasks.
  • Active learning with parameter-efficient fine-tuning should reach a given accuracy with fewer annotated examples and fewer updated parameters than full fine-tuning, because PEFT keeps representations closer to the pretrained model.
  • WILDA-style weak supervision converts in-context demonstrations into knowledge stored in adapter modules, so demonstrations do not have to be repeated inside every prompt.
  • Better calibration from smoothness would make confidence scores of fine-tuned models usable for selective prediction and deferral in high-stakes NLP applications.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

  • A testable extension the thesis leaves open is applying the same Jacobian-Hessian penalty during pre-training rather than fine-tuning; the reported experiments only cover fine-tuning on GLUE-sized data, so whether smoothness regularization helps at pre-training scale is unknown.
  • The comparison between JACHESS train and JACHESS unlab hints that part of the gain may come from the extra unlabeled-data passes rather than from the smoothness penalty itself; a clean ablation would keep the dual-mode training while replacing the norm penalty with a dummy loss.
  • The paper's smoothness-guided active-learning stopping could be transferred to batch active learning for larger decoder-only models, where the Besov index might also serve as a cheap monitor of distribution shift during iterative querying.
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Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, and a circularity audit.

Referee Report

4 major / 5 minor

Summary. The thesis proposes representation-analysis-based techniques to improve data and parameter efficiency of neural language models. The main contribution is JACHESS, a regularization method that penalizes Jacobian and Hessian Frobenius norms of intermediate transformer layers, estimated via Hutchinson's estimator, with the aim of enforcing representation smoothness and thereby improving generalization, robustness, and calibration. Secondary contributions include BEAST, an early-stopping method based on Besov smoothness that avoids labeled validation sets; a study combining active learning with parameter-efficient fine-tuning; and WILDA, a weak-supervision framework for in-context learning. The empirical evaluation centers on GLUE benchmark results for BERT, OPT, and Llama models, reporting average-score gains of 2% to 4.5% for JACHESS over standard fine-tuning.

Significance. If the results hold, the thesis provides a conceptually clean mechanism—enforcing representation smoothness—for improving both generalization and calibration of transformer language models, with a dual-mode training recipe that leverages unlabeled data. The manuscript has several strengths: it reports five-seed experiments, uses Mann-Whitney U tests with Holm-Bonferroni correction for the main comparisons, spans multiple model families and scales, and combines three orthogonal efficiency levers (regularization, active learning, and weak supervision). However, the central smoothness mechanism rests on the accuracy of the Hutchinson estimator, which is not adequately characterized, and the design choices for JACHESS are tuned on the same GLUE development sets used for the headline results. These issues must be addressed before the causal claim that smoothness drives the observed gains can be accepted.

major comments (4)
  1. [Section 3.4 / Eq. (3.7)-(3.8) and Section 4.1 / Eq. (4.1)] The manuscript never reports the number of Hutchinson projections p used for the Jacobian and Hessian estimates, and Eq. (4.1) is an unnormalized sum over a random subset D(k) of output dimensions. Because the expected value of the Hessian term scales linearly with |D(k)|, the results in Table 4.7 (which vary the sampled dimensions from 0 to 50) are confounded with the effective regularization strength λ_2; the observed optimum at 10 dimensions therefore does not demonstrate estimation fidelity, only that a particular effective penalty is helpful. To support the claim that minimizing the estimated norms enforces smoothness, the authors should report p, normalize the dimension sum (e.g., divide by |D(k)|), and provide a sensitivity analysis over p or variance diagnostics for the estimator.
  2. [Section 4.5 / Tables 4.6, 4.7 and Figure 4.3] The regularization-factor strategy, the number of sampled Hessian dimensions, and the size of the unlabeled set are all selected on the GLUE development sets, which are also the evaluation sets for the headline results in Tables 4.2 and 4.3. This constitutes tuning on the test data for the central empirical claim, and the Holm-Bonferroni-corrected p-values in Tables 4.2 and 4.3 do not account for this selection. The authors should either evaluate on held-out test sets (e.g., via the official GLUE benchmark or an internal train/validation/test split) or clearly separate model selection from evaluation and report the selection procedure.
  3. [Section 4.3.3 / Tables 4.2 and 4.3] The text claims that JACHESS 'significantly' outperforms standard fine-tuning and other regularization methods, but the significance indicators (†) only mark comparisons between JACHESS variants and the BASE model. No pairwise significance tests are reported against L2, TAPT, SAM, Jacobian regularization, or Cross-Hölder regularization. Given that the average-score improvements over Cross-Hölder unlab are often small (e.g., BERT .783 vs. .762, OPT-1.3B .846 vs. .837), the claim of superiority over other regularization methods is unsupported by the reported statistics. Pairwise tests against all baselines, or a more cautious wording, are needed.
  4. [Section 6.2 / Section 3.5] BEAST, the proposed early-stopping method, relies entirely on the Besov smoothness index estimated through the wavelet random-forest approximation of Elisha and Dekel [68], but the manuscript does not specify the number of wavelets M, the least-squares fitting procedure, or any validation of the estimated index against actual generalization performance. Since the stopping decision is driven by this proxy, a systematic mis-estimate would invalidate the method. The authors should provide the algorithmic details and an evaluation of the estimator's reliability (e.g., correlation with validation accuracy on held-out data).
minor comments (5)
  1. [Section 4.1.1] The notation for regularization factors is confusing: λ_i is introduced as a vector across layers, but the text later states 'λ 1 = λ 2 = λ' without clarifying whether this is a scalar shared across layers or a per-layer vector. Please disambiguate.
  2. [Table 4.1] The column header says 'Token corruption [%]' but the first column lists values 5, 10, 15, 20, while the main text states corruption is 'varied between 10%, 15%, and 20%.' Either include 5% in the text or remove it from the table.
  3. [Section 3.4] In Eqs (3.7) and (3.8), the dimensionality of the random vector v is not stated; specify that v∈R^d where d is the output dimension of the relevant layer, and clarify whether the same vector is reused across the sampled dimensions.
  4. [Section 4.5 / Figure 4.3] The sentence 'Without any unlabeled data, the setup corresponds to the BASE model' appears to be imprecise, because JACHESS train also exists and uses labeled data; clarify which variant is being compared.
  5. [Section 4.3.3] The captions of Tables 4.2 and 4.3 mention that the second-highest scores are underlined, but the body text never interprets the underlined values; either remove the underlining or add a sentence discussing the second-best methods.

Circularity Check

0 steps flagged · score 0.0 of 10

No significant circularity: JACHESS, the design-choice analyses, and the efficiency claims are derived from explicit definitions and evaluated on external GLUE/IMDb benchmarks, not from fitted inputs or self-citations.

full rationale

The derivation chain is self-contained. JACHESS is defined by Eq. (4.1) as a weighted sum of estimated Jacobian and Hessian Frobenius norms, with the estimator given in Eqs. (3.7)-(3.8); the regularization target is therefore stated explicitly and does not presuppose the reported GLUE improvements. The claim of 2-4.5% average GLUE gains is an empirical comparison to BASE, L2, TAPT, SAM, Jacobian, and Cross-Hölder baselines on held-out development sets, so it is not a fitted quantity renamed as a prediction. The only self-reference is citation [71] for the JACHESS method, but Section 4.1 re-derives the method in full, so the citation is provenance rather than load-bearing. Hyperparameters such as lambda, number of sampled Hessian dimensions, and unlabeled-data pool size are selected on the development sets, which is standard model selection and not definitional circularity. The Hutchinson-estimator noise concern raised by the skeptical reader is a correctness and approximation risk, not a case where the conclusion is equivalent to the input by construction. No step in the available text reduces a predicted quantity to the quantity it was fitted from.

Assumptions & free parameters 5 free parameters · 5 assumptions · 0 invented entities

The central claim rests on computational proxies for smoothness (Hutchinson estimates and Besov indices) and on the causal link between smoothness and generalization. No new physical entities are introduced; the free parameters are regularization strengths, sampled dimensions, unlabeled set sizes, and Besov estimation settings, most of which are tuned on the evaluation sets.

free parameters (5)
  • JACHESS regularization factors lambda_1 and lambda_2 per layer = softmax-normalized proportional to pre-fine-tuning smoothness, exact values not reported
    Chosen in Section 4.5 on GLUE development sets as the best of four strategies; the final GLUE numbers are reported on the same development sets.
  • Number of sampled Hessian output dimensions per layer D(k) = 10
    Selected in Table 4.7 as the best value on GLUE development sets; this selection affects the main JACHESS results.
  • Number of Hutchinson random projections p = not reported
    Used in Eqs. 3.7 and 3.8 to estimate Jacobian and Hessian norms; no value or variance analysis is given in the visible text.
  • Number of unlabeled instances for JACHESS unlab = 1000
    Set as the default based on Figure 4.3, which shows diminishing returns beyond 1000 on GLUE development sets.
  • Besov smoothness estimation parameters (number of wavelets M and least-squares fit) = not reported
    The Besov index estimate in Section 3.5 depends on M and the regression; the visible text gives the log-linear relation but not the exact settings used for BEAST.
assumptions (5)
  • standard math Hutchinson's estimator provides an unbiased estimate of the trace via E[v^T B v] = Tr(B) for v ~ N(0,I).
    Invoked in Section 3.4, Eq. 3.5, as the basis for estimating Jacobian and Hessian Frobenius norms without materializing the matrices.
  • domain assumption Minimizing the Frobenius norm of Jacobian and Hessian matrices reduces the Lipschitz constant and enforces representation smoothness.
    Used to justify the JACHESS regularization objective in Section 4.1; the paper does not prove this holds for transformer intermediate layers.
  • ad hoc to paper The wavelet-based random forest approximation from Elisha and Dekel [68] yields a valid Besov smoothness index for PLM hidden states.
    Adopted in Section 3.5 and used for BEAST; the thesis extends this approximation from DNNs to transformer language models without independent verification.
  • domain assumption Smoothness of representations is causally linked to generalization, calibration, and data efficiency in PLMs.
    The central premise of the thesis, stated in Chapters 3 and 4; the thesis provides correlations and benchmark results but no causal proof.
  • domain assumption Active learning query strategies and pseudo-label correction mechanisms used in WILDA improve performance under weak supervision.
    Relied upon for the third part of the thesis; the details in Chapter 10 are only partially visible in the provided text.

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Pith. "Pith review of Improving Data and Parameter Efficiency of Neural Language Models Using Representation Analysis." pith.science (2026). https://pith.science/paper/S2IAQFJN

@misc{pith2026250712004,
  author       = {Pith},
  title        = {Pith review of: Improving Data and Parameter Efficiency of Neural Language Models Using Representation Analysis},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/S2IAQFJN}},
  note         = {Machine review of arXiv:2507.12004}
}
read the original abstract

This thesis addresses challenges related to data and parameter efficiency in neural language models, with a focus on representation analysis and the introduction of new optimization techniques. The first part examines the properties and dynamics of language representations within neural models, emphasizing their significance in enhancing robustness and generalization. It proposes innovative approaches based on representation smoothness, including regularization strategies that utilize Jacobian and Hessian matrices to stabilize training and mitigate sensitivity to input perturbations. The second part focuses on methods to significantly enhance data and parameter efficiency by integrating active learning strategies with parameter-efficient fine-tuning, guided by insights from representation smoothness analysis. It presents smoothness-informed early-stopping techniques designed to eliminate the need for labeled validation sets and proposes innovative combinations of active learning and parameter-efficient fine-tuning to reduce labeling efforts and computational resources. Extensive experimental evaluations across various NLP tasks demonstrate that these combined approaches substantially outperform traditional methods in terms of performance, stability, and efficiency. The third part explores weak supervision techniques enhanced by in-context learning to effectively utilize unlabeled data, further reducing dependence on extensive labeling. It shows that using in-context learning as a mechanism for weak supervision enables models to better generalize from limited labeled data by leveraging unlabeled examples more effectively during training. Comprehensive empirical evaluations confirm significant gains in model accuracy, adaptability, and robustness, especially in low-resource settings and dynamic data environments.

Figures

Figures reproduced from arXiv: 2507.12004 by the authors.

Figure 2.1
Figure 2.1. Illustration of one-hot encoding for a vocabulary of five words. Each word is [PITH_FULL_IMAGE:figures/full_fig_p028_2_1.png] view at source ↗
Figure 2.2
Figure 2.2. Illustration of the Word2Vec training objectives. [PITH_FULL_IMAGE:figures/full_fig_p034_2_2.png] view at source ↗
Figure 2.3
Figure 2.3. The neural network architecture for CBOW. Context words (one-hot encoded) are [PITH_FULL_IMAGE:figures/full_fig_p035_2_3.png] view at source ↗
Figures from the paper (43 more)
Figure 2.4
Figure 2.4. Figure 2.4: Illustration of the recurrent structure of an RNN. At each time step [PITH_FULL_IMAGE:figures/full_fig_p040_2_4.png]
Figure 2
Figure 2. Figure 2: illustrates the [PITH_FULL_IMAGE:figures/full_fig_p040_2.png]
Figure 2.5
Figure 2.5. Figure 2.5: Unrolled RNN throughout the sequence. This parameter-sharing mechanism reduces the overall complexity of the model, making it more efficient to train while improving generalization. Additionally, these networks enable contextual learning by leveraging hidden states t…
Figure 2
Figure 2. Figure 2: illustrates the internal structure of an LSTM cell. The gating mechanism allows [PITH_FULL_IMAGE:figures/full_fig_p042_2.png]
Figure 2.6
Figure 2.6. Figure 2.6: Structure of an LSTM cell The input, forget, and output gates enable the model to regulate which information should be stored, updated, or discarded at each time step. This selective filtering allows LSTMs to focus on relevant parts of the sequence while ignoring les…
Figure 2.7
Figure 2.7. Figure 2.7: Schematics of the scaled dot-product attention. This diagram illustrates the steps of [PITH_FULL_IMAGE:figures/full_fig_p045_2_7.png]
Figure 2.8
Figure 2.8. Figure 2.8: Transformer architecture • Autoregressive decoding: During inference, the decoder generates tokens sequentially, predicting one token at a time based on previously generated tokens and encoder outputs (if applicable). This step-by-step process enables the generation …
Figure 2.9
Figure 2.9. Figure 2.9: Multi-head attention on the surrounding context. This enables the model to learn deep contextual dependen￾cies; • Causal Language Modeling (CLM): An autoregressive framework in which the model learns to predict the next token in a sequence, given only the preceding t…
Figure 2.10
Figure 2.10. Figure 2.10: LLM landscape. The development of neural language models began with static [PITH_FULL_IMAGE:figures/full_fig_p055_2_10.png]
Figure 3.1
Figure 3.1. Figure 3.1: The effects of representation smoothness enforced through regularization. While [PITH_FULL_IMAGE:figures/full_fig_p060_3_1.png]
Figure 3.2
Figure 3.2. Figure 3.2: Calibration plot illustrating the relationship between predicted probabilities and [PITH_FULL_IMAGE:figures/full_fig_p062_3_2.png]
Figure 4
Figure 4. Figure 4: illustrates the predictive accuracy of different models under varying perturbation [PITH_FULL_IMAGE:figures/full_fig_p074_4.png]
Figure 4.1
Figure 4.1. Figure 4.1: Predictive accuracy under varying perturbation magnitudes [PITH_FULL_IMAGE:figures/full_fig_p075_4_1.png]
Figure 4
Figure 4. Figure 4: provides calibration plots for binary classification tasks from the GLUE benchmark, [PITH_FULL_IMAGE:figures/full_fig_p081_4.png]
Figure 4.2
Figure 4.2. Figure 4.2: Calibration plots for binary classification datasets (GLUE) with Llama 2, averaged [PITH_FULL_IMAGE:figures/full_fig_p082_4_2.png]
Figure 4.3
Figure 4.3. Figure 4.3: Average GLUE scores for Llama 2 and OPT-6.7B with increasing numbers of unla [PITH_FULL_IMAGE:figures/full_fig_p084_4_3.png]
Figure 5.1
Figure 5.1. Figure 5.1: Illustration of a hypothesis in a version space within AL. The purple circles repre [PITH_FULL_IMAGE:figures/full_fig_p090_5_1.png]
Figure 5.2
Figure 5.2. Figure 5.2: Active learning loop in pool-based sampling [PITH_FULL_IMAGE:figures/full_fig_p093_5_2.png]
Figure 6
Figure 6. Figure 6: visualizes the layer-wise Besov smoothness distributions across training regimes, [PITH_FULL_IMAGE:figures/full_fig_p105_6.png]
Figure 6.1
Figure 6.1. Figure 6.1: Normalized Besov smoothness of PLM layers across training regimes. Black error [PITH_FULL_IMAGE:figures/full_fig_p106_6_1.png]
Figure 6
Figure 6. Figure 6: presents AL performance curves for BERT under [PITH_FULL_IMAGE:figures/full_fig_p106_6.png]
Figure 6.2
Figure 6.2. Figure 6.2: Active learning performance curves for BERT under [PITH_FULL_IMAGE:figures/full_fig_p107_6_2.png]
Figure 6.3
Figure 6.3. Figure 6.3: AL performance curves for different training regimes across datasets for BERT. [PITH_FULL_IMAGE:figures/full_fig_p110_6_3.png]
Figure 6.4
Figure 6.4. Figure 6.4: AL performance curves for different training regimes across datasets for ELECTRA. [PITH_FULL_IMAGE:figures/full_fig_p111_6_4.png]
Figure 6.5
Figure 6.5. Figure 6.5: Relationship between active and random sample smoothness (Figure 6.5a) and cor [PITH_FULL_IMAGE:figures/full_fig_p113_6_5.png]
Figure 6.6
Figure 6.6. Figure 6.6: Besov smoothness of actively acquired samples with [PITH_FULL_IMAGE:figures/full_fig_p114_6_6.png]
Figure 7.1
Figure 7.1. Figure 7.1: Bottleneck adapter: A lightweight module inserted between pre-trained layers in a [PITH_FULL_IMAGE:figures/full_fig_p120_7_1.png]
Figure 7.2
Figure 7.2. Figure 7.2: Parallel adapter: A task-specific module operating alongside the pre-trained layer [PITH_FULL_IMAGE:figures/full_fig_p121_7_2.png]
Figure 7.3
Figure 7.3. Figure 7.3: LoRA: Task-specific adaptations represented as low-rank updates to the pre-trained [PITH_FULL_IMAGE:figures/full_fig_p124_7_3.png]
Figure 7.4
Figure 7.4. Figure 7.4: Hard Routing In hard routing, each module is either activated or not based on a binary decision for a given input. The gating function bi(x) ∈ {0,1} indicates whether module i is active: bi(x) =    1 if module i is activated, 0 otherwise. The model’s output is the…
Figure 7.4
Figure 7.4. Figure 7.4: Illustration of routing mechanisms in parameter-efficient learning. Left: Fixed [PITH_FULL_IMAGE:figures/full_fig_p129_7_4.png]
Figure 8.1
Figure 8.1. Figure 8.1: Learning curves under passive learning for PEFT methods and FFT. Results are [PITH_FULL_IMAGE:figures/full_fig_p134_8_1.png]
Figure 8.2
Figure 8.2. Figure 8.2: Comparison of best-performing adapters and FFT from Table 8.2 with and without [PITH_FULL_IMAGE:figures/full_fig_p137_8_2.png]
Figure 8.3
Figure 8.3. Figure 8.3: AL learning curves compared with random sampling on the [PITH_FULL_IMAGE:figures/full_fig_p138_8_3.png]
Figure 8
Figure 8. Figure 8: illustrates the distribution of forgetting events for [PITH_FULL_IMAGE:figures/full_fig_p139_8.png]
Figure 8.4
Figure 8.4. Figure 8.4: Forgetting dynamics for random sampling (passive learning) and AL with [PITH_FULL_IMAGE:figures/full_fig_p140_8_4.png]
Figure 8
Figure 8. Figure 8: visualizes these differences across layers for the [PITH_FULL_IMAGE:figures/full_fig_p140_8.png]
Figure 8.5
Figure 8.5. Figure 8.5: Layerwise difference in representation similarity for the UniPELT adapter and the [PITH_FULL_IMAGE:figures/full_fig_p141_8_5.png]
Figure 8.6
Figure 8.6. Figure 8.6: Layerwise difference in representation similarity for the UniPELT adapter [PITH_FULL_IMAGE:figures/full_fig_p142_8_6.png]
Figure 10.1
Figure 10.1. Figure 10.1: The figure shows how incorrect pseudo-labels are refined using high-confidence [PITH_FULL_IMAGE:figures/full_fig_p157_10_1.png]
Figure 10.2
Figure 10.2. Figure 10.2: Illustration of WILDA. The teacher processes a concatenation (denoted by ○; ) of demonstrations Xd, consisting of n demonstrations [x1,x2,...,xn], and the query xq. The student, using only the query, fine-tunes its adapter weights to produce outputs ys aligned with …
Figure 10.3
Figure 10.3. Figure 10.3: Empirical analysis of WILDA-S on the aggregated GLUE datasets for Llama 3: (a) Histogram of approximated Lipschitz constants across datasets, computed as the Frobenius norm of the input-output Jacobian matrix; (b) Rate of pseudo-label correction over training epochs…
Figure 10
Figure 10. Figure 10: c illustrates the rate of prediction flips within these bins, where a flip refers to [PITH_FULL_IMAGE:figures/full_fig_p174_10.png]

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Pith tools

Reviewed August 6, 2026 · model on record in the stance chip above.