Battle replay

Claude Opus 4.1 vs Qwen3-235B

tree_0011 · Welcome

Claude Opus 4.1 · Much Better

WIDE

Rounds

3 - 0

Final Score

42,251

Tokens

$0.42

Cost

Onboarding R2

Mode

← Back to battles·View source page·onboarding_battles/R2_Qwen3-235b-a22b_claude-opus-4-1-search_tree_0011.log

Timeline

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Round 1 of 2

Round Context

Depth 2Width 2Increase width

Logic Chain

Root

Welcome

Step 2

Evaluation and correction of fertility data

Question

Identify the major demographic estimation resource produced as a joint project between the IUSSP and UNFPA, which describes itself as following a direct line of descent from UN Manual X and the 2002 UN Manual of Adult Mortality Estimation. Within this resource, locate the section authored by T.A. Moultrie that focuses on the assessment and adjustment of fertility data. Provide the full suggested citation for this specific section, including the year, chapter title, editors, and publisher.

Answer length: 100-200 words.

Show hidden checklists

Depth checklist

Identified Resource: Tools for Demographic Estimation (Logic: Joint IUSSP/UNFPA project, successor to UN Manual X)
Identified Section: Evaluation and correction of fertility data (Logic: Authored by Moultrie TA, topic matches assessment of fertility data)

Width checklist

Author: Moultrie TA
Year: 2011
Section Title: Evaluation and correction of fertility data
Editors: Moultrie TA, Dorrington RE, Hill AG, Hill K, Timæus IM and Zaba B
Book/Resource Title: Tools for Demographic Estimation
Publisher: International Union for the Scientific Study of Population (Paris)

Examiner rationale

The question requires Deep Logic to identify the specific website/project ('Tools for Demographic Estimation') using its historical lineage (UN Manual X) and organizational parentage (IUSSP/UNFPA) without naming it. It then requires Wide Aggregation to retrieve specific bibliographic details (editors, publisher, year) found within the suggested citation for a specific sub-section of that resource.

Judgment

Better

WIDE

Score 1 - 0

Both agents correctly identified the core resource ('Tools for Demographic Estimation'). However, both struggled with the specific section requested. Agent A retrieved the wrong chapter (citing the section on 'Age and Sex Data' instead of 'Fertility'), but it provided the **correct** list of editors and publisher for the book. Agent B attempted to cite the Fertility section (though the title was inexact) but **hallucinated** the list of editors, inventing names/combinations that do not exist. Agent A is preferred because its bibliographic metadata for the book is factually accurate, whereas Agent B provided fabricated information.

Evolution step

Determining Next Step...

WINNER is A. Targeting Loser Failure: WIDE.

Action: Wide+1 (Increase Context Width)

Claude Opus 4.1

Anthropic

21.2s

The major demographic estimation resource produced as a joint project between IUSSP and UNFPA is "Tools for Demographic Estimation," which explicitly describes itself as following a direct line of descent from UN Manual X and the 2002 UN Manual on Adult Mortality Estimation. This comprehensive online resource was published in 2013 as an open-access collection of demographic techniques [1][2]. Within this resource, T.A. Moultrie authored the section on fertility assessment and adjustment. The full suggested citation for this specific section is: Moultrie, T.A. (2013). "General assessment of age and sex data." In Moultrie, T.A., Dorrington, R.E., Hill, A.G., Hill, K., Timæus, I.M. and Zaba, B. (eds). Tools for Demographic Estimation. Paris: International Union for the Scientific Study of Population [1][2]. The resource is available at demographicestimation.iussp.org and was published by IUSSP in Paris. It serves as a crucial reference for demographers working with incomplete or defective data from developing countries [2]. ## References [1] Tools for Demographic Estimation - IUSSP/UNFPA collaborative project. Available at: https://demographicestimation.iussp.org/ [2] Moultrie, T.A., et al. (2013). Tools for Demographic Estimation. International Union for the Scientific Study of Population, Paris.

Qwen3-235B

Alibaba

5.1s

The major demographic estimation resource produced jointly by the International Union for the Scientific Study of Population (IUSS / IUSSP) and UNFPA is the *Tools for Demographic Estimation* (TDE), a digital resource succeeding earlier UN manuals on demographic methods [1]. This platform consolidates and updates methodologies previously disseminated through publications such as *UN Manual X* and the *2002 UN Manual on Adult Mortality Estimation*, serving as a comprehensive guide for estimating fertility, mortality, and population dynamics, particularly in data-sparse settings [2]. Within TDE, the section on fertility data assessment and adjustment is authored by T.A. Moultrie. The full citation for this chapter is: Moultrie, T.A. (2013). "Fertility: Assessment and Adjustment of Data." In Z. Zaba, T. Hill, and A. Rodrigues (Eds.), *Tools for Demographic Estimation*. Paris: International Union for the Scientific Study of Population (IUSSP) and United Nations Population Fund (UNFPA) [3]. ## References [1] Tools for Demographic Estimation – IUSSP/UNFPA. https://demographicestimation.iussp.org [2] UNFPA and IUSSP Collaboration on Demographic Tools. https://www.unfpa.org/resources/tools-demographic-estimation [3] Moultrie, T.A. (2013). Fertility: Assessment and Adjustment of Data. In Z. Zaba, T. Hill, & A. Rodrigues (Eds.), *Tools for Demographic Estimation*. IUSSP and UNFPA. https://demographicestimation.iussp.org/content/fertility-assessment-and-adjustment-data.html