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Evaluating large language models for technology-oriented searches in engineering design

Published online by Cambridge University Press:  02 July 2026

Vasileios Koutsouvelis
Affiliation:
Politecnico di Milano, Italy
Filippo Silipigni
Affiliation:
Fondazione Politecnico di Milano, Italy
Niccolò Becattini*
Affiliation:
Politecnico di Milano, Italy

Abstract:

This study evaluates the efficacy of various freely available Large Language Models (LLMs) in conducting semi-automated purpose-oriented technology searches to support design activities as well as Technology Intelligence for innovation management, using a systematic manual search as a baseline for comparison. The case to run the comparison focuses on identifying water purification technologies suitable for mobile systems. The results show that LLMs can target more technologies than human-based searches, reducing time demands and providing wider entry points for additional technology analysis.

Information

Type
ARTIFICIAL INTELLIGENCE AND DATA-DRIVEN DESIGN
Creative Commons
Creative Common License - CCCreative Common License - BYCreative Common License - NCCreative Common License - ND
This is an Open Access article, distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives licence (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is unaltered and is properly cited. The written permission of Cambridge University Press must be obtained for commercial re-use or in order to create a derivative work.
Copyright
The Author(s), 2026
Figure 0

Figure 1. Manual vs AI-assisted technology exploration - research methodology overview

Figure 1

Table 1. Scoring criteria

Figure 2

Table 2. Example of the AI-generated table, with technologies, pros, cons, and sources (excerpt)

Figure 3

Table 3. Summary of AI-generated technology novelty

Figure 4

Table 4. Source credibility: breakdown of source types by AI model

Figure 5

Figure 2. Figure 2 long description.a. LLM technology coverage and its novelty; b. percentage of covered and novel technologies of the LLMs; c. performance of each LLM according to the authoritative and the error of the sources; d. performance of the LLMs according to the novelty and cove

Figure 6

Table 5. Average score of “pros” and “cons” of the technologies of every LLM