# Mdpi.com in the Machine Relations Index Canonical URL: https://machinerelations.ai/index/domains/mdpi.com Canonical domain: mdpi.com Source role: Other observed source Release mri_score_v2.0+2026-09-18+8fa38e54dd0a; methodology mri_score_v2.0; generated 2026-09-18; window 2026-05-10 to 2026-09-18; artifact 8fa38e54dd0a. mdpi.com appeared as a cited source in 69 of 15,782 monitored answer runs (0.44%) from 2026-05-10 to 2026-09-18. ## Overall Evidence - Citation rate: 0.44% - Cited runs: 69 of 15,782 - Days cited: 32 of 125 - Engine breadth: 6 observed engines (chatgpt, claude, gemini, google_ai_mode, google_ai_overviews, perplexity) - Confidence: Confidence C - Standing: #124 of 22,179 observed domains ## Observed Segments | Category | Question shape | State | Cited runs | Observed runs | Run dates | Rate | Confidence | Standing | |---|---|---|---:|---:|---:|---:|---|---| | [AI Infrastructure](https://machinerelations.ai/index/categories/ai-infrastructure) | [How buyers choose](https://machinerelations.ai/index/categories/ai-infrastructure/how_choose) | published | 3 | 106 | 7 | 2.83% | Unavailable | #69 of 258 | | [AI Infrastructure](https://machinerelations.ai/index/categories/ai-infrastructure) | [Top lists](https://machinerelations.ai/index/categories/ai-infrastructure/top_list) | published | 1 | 108 | 7 | 0.93% | Unavailable | #216 of 270 | | [AI Security & Privacy](https://machinerelations.ai/index/categories/ai-security-privacy) | [How buyers choose](https://machinerelations.ai/index/categories/ai-security-privacy/how_choose) | published | 1 | 130 | 7 | 0.77% | Unavailable | #229 of 305 | | [AI Security & Privacy](https://machinerelations.ai/index/categories/ai-security-privacy) | [Is it worth it](https://machinerelations.ai/index/categories/ai-security-privacy/is_x_worth) | published | 1 | 130 | 7 | 0.77% | Unavailable | #243 of 330 | | [AI Security & Privacy](https://machinerelations.ai/index/categories/ai-security-privacy) | [Top lists](https://machinerelations.ai/index/categories/ai-security-privacy/top_list) | published | 1 | 106 | 7 | 0.94% | Unavailable | #231 of 313 | | [AI Security & Privacy](https://machinerelations.ai/index/categories/ai-security-privacy) | [Comparisons](https://machinerelations.ai/index/categories/ai-security-privacy/x_vs_y) | published | 4 | 114 | 7 | 3.51% | Unavailable | #44 of 263 | | [Consumer Health](https://machinerelations.ai/index/categories/consumer-health) | [Best tools](https://machinerelations.ai/index/categories/consumer-health/best_x) | published | 1 | 132 | 7 | 0.76% | Unavailable | #215 of 298 | | [Consumer Health](https://machinerelations.ai/index/categories/consumer-health) | [Is it worth it](https://machinerelations.ai/index/categories/consumer-health/is_x_worth) | published | 2 | 130 | 7 | 1.54% | Unavailable | #104 of 213 | | [Deep Tech & Hardware](https://machinerelations.ai/index/categories/deep-tech-hardware) | [Best tools](https://machinerelations.ai/index/categories/deep-tech-hardware/best_x) | published | 10 | 121 | 7 | 8.26% | Unavailable | #16 of 328 | | [Deep Tech & Hardware](https://machinerelations.ai/index/categories/deep-tech-hardware) | [How buyers choose](https://machinerelations.ai/index/categories/deep-tech-hardware/how_choose) | published | 1 | 130 | 7 | 0.77% | Unavailable | #148 of 195 | | [Deep Tech & Hardware](https://machinerelations.ai/index/categories/deep-tech-hardware) | [Problem-first research](https://machinerelations.ai/index/categories/deep-tech-hardware/problem_first) | published | 1 | 104 | 7 | 0.96% | Unavailable | #116 of 157 | | [Deep Tech & Hardware](https://machinerelations.ai/index/categories/deep-tech-hardware) | [Top lists](https://machinerelations.ai/index/categories/deep-tech-hardware/top_list) | published | 14 | 106 | 7 | 13.21% | Unavailable | #5 of 279 | | [Deep Tech & Hardware](https://machinerelations.ai/index/categories/deep-tech-hardware) | [Comparisons](https://machinerelations.ai/index/categories/deep-tech-hardware/x_vs_y) | published | 8 | 105 | 7 | 7.62% | Unavailable | #18 of 171 | | [Fintech](https://machinerelations.ai/index/categories/fintech) | [News-driven citations](https://machinerelations.ai/index/categories/fintech/news_topic) | published | 4 | 616 | 53 | 0.65% | Unavailable | #297 of 1,531 | | [Healthcare Services](https://machinerelations.ai/index/categories/healthcare-services) | [News-driven citations](https://machinerelations.ai/index/categories/healthcare-services/news_topic) | published | 6 | 613 | 53 | 0.98% | Unavailable | #185 of 1,264 | | [iGaming & Betting](https://machinerelations.ai/index/categories/igaming-betting) | [Problem-first research](https://machinerelations.ai/index/categories/igaming-betting/problem_first) | collecting | 1 | 30 | 1 | Unavailable | Unavailable | Collecting observations; no mature rank | | [Legacy News Topics](https://machinerelations.ai/index/categories/legacy-unmapped) | [News-driven citations](https://machinerelations.ai/index/categories/legacy-unmapped/news_topic) | published | 8 | 2,138 | 54 | 0.37% | Unavailable | #440 of 4,025 | | [Martech & Advertising](https://machinerelations.ai/index/categories/martech-advertising) | [News-driven citations](https://machinerelations.ai/index/categories/martech-advertising/news_topic) | published | 2 | 602 | 53 | 0.33% | Unavailable | #463 of 1,244 | ## Citation Mdpi.com (mdpi.com), 0.44% citation rate, 69 of 15,782 monitored answer runs, 2026-05-10 to 2026-09-18, mri_score_v2.0, mri_score_v2.0+2026-09-18+8fa38e54dd0a, https://machinerelations.ai/index/domains/mdpi.com. ## Badge Badge image: https://machinerelations.ai/index/domains/mdpi.com/badge.svg [![Mdpi.com (mdpi.com), 0.44% citation rate, 69 of 15,782 monitored answer runs, 2026-05-10 to 2026-09-18, mri_score_v2.0, mri_score_v2.0+2026-09-18+8fa38e54dd0a, https://machinerelations.ai/index/domains/mdpi.com.](https://machinerelations.ai/index/domains/mdpi.com/badge.svg)](https://machinerelations.ai/index/domains/mdpi.com) The badge is live: it shows the current release, so it changes when the release changes, and it returns 404 if this domain leaves the released population. The link goes to this profile and the alt text is the citation above. ## Public Boundary The public dataset reports citation rates, rankings, and evidence counts. It excludes internal query identifiers, raw cited URLs, and answer-engine provider payloads. MRI measures observed root-domain citations in monitored prompts; it does not measure all AI answers, recommendation quality, website traffic, or commercial performance. A citation does not prove source support, and MRI confidence is not an Answer-Source Fidelity grade. ## Related Sources - [Machine Relations Index](https://machinerelations.ai/index) - [Public JSON artifact](https://machinerelations.ai/data/machine-relations-index.json) - [Release manifest](https://machinerelations.ai/data/mri-release-manifest.json) - [AuthorityTech publication intelligence projection](https://authoritytech.io/publications.md) — Practitioner projection derived from the neutral Machine Relations Index. It is not source evidence, citation provenance, or sameAs identity for the neutral dataset.