Evidence map›Paper›PMID 34103566›Full record

ArticleScientific reports2021

Determination of quasi-primary odors by endpoint detection.

Hanxiao Xu, Koki Kitai, Kosuke Minami, Makito Nakatsu, Genki Yoshikawa, Koji Tsuda, Kota Shiba, Ryo Tamura

Abstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed.

  1. Overview of AI-Based Scent Creation.Sensors (Basel, Switzerland) · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Hanxiao XuGraduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8568, Japan.
Koki KitaiGraduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8568, Japan.
Kosuke MinamiInternational Center for Young Scientists (ICYS), National Institute for Materials Science, Tsukuba, 305-0044, Japan.
Makito NakatsuCenter for Functional Sensor & Actuator (CFSN), Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, 305-0044, Japan.
Genki YoshikawaCenter for Functional Sensor & Actuator (CFSN), Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, 305-0044, Japan.
Koji TsudaGraduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8568, Japan.
Kota ShibaCenter for Functional Sensor & Actuator (CFSN), Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, 305-0044, Japan. shiba.kota@nims.go.jp.
Ryo TamuraGraduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8568, Japan. tamura.ryo@nims.go.jp.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It is known that there are no primary odors that can represent any other odors with their combination. Here, we propose an alternative approach: "quasi" primary odors. This approach comprises the following condition and method: (1) within a collected dataset and (2) by the machine learning-based endpoint detection. The quasi-primary odors are selected from the odors included in a collected odor dataset according to the endpoint score. While it is limited within the given dataset, the combination of such quasi-primary odors with certain ratios can reproduce any other odor in the dataset. To visually demonstrate this approach, the three quasi-primary odors having top three high endpoint scores are assigned to the vertices of a chromaticity triangle with red, green, and blue. Then, the other odors in the dataset are projected onto the chromaticity triangle to have their unique colors. The number of quasi-primary odors is not limited to three but can be set to an arbitrary number. With this approach, one can first find "extreme" odors (i.e., quasi-primary odors) in a given odor dataset, and then, reproduce any other odor in the dataset or even synthesize a new arbitrary odor by combining such quasi-primary odors with certain ratios.

Identifiers

PMID34103566
PMCPMC8187439

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.