Browsing NOFIMA vitenarkiv by Author "Næs, Tormod"

A comparison of generalised procrustes analysis and multiple factor analysis for projective mapping data

Tomic, Oliver; Berget, Ingunn; Næs, Tormod (Peer reviewed; Journal article, 2015)

Generalised procrustes analysis and multiple factor analysis are multivariate statistical methods that belong to the family of multiblock methods. Both methods are often used for analysis of data from projective mapping ...

A comparison of methods for analyzing multivariate sensory data in designed experiments - A case study of salt reduction in liver paste

Næs, Tormod; Tomic, Oliver; Greiff, Kirsti; Thyholt, Kari (Peer reviewed; Journal article, 2014)

This paper presents a comparison of different methods for analyzing designed experiments. The methods used are based on PCA, PLS and ANOVA, used either separately or in combination. Special emphasis will be on how to obtain ...

A comparison of two new take-away strategies and their relation to rating and ranking of extrinsic properties of dry cured ham

Næs, Tormod; Monteleone, Erminio; Segtnan, Anne; Hersleth, Margrethe (Peer reviewed; Journal article, 2013)

This paper is a study of the relationship between rating, ranking and take-away choices of dry cured ham. Extrinsic attributes related to country of origin, ageing time and price are considered and we study average population ...

A discussion of recent methodologies for combining sensory and extrinsic product properties in consumer studies

Asioli, Daniele; Varela, Paula; Hersleth, Margrethe; Almli, Valerie Lengard; Olsen, Nina Veflen; Næs, Tormod (Journal article, 2016)

Understanding the interaction of sensory and extrinsic product attributes in consumer preferences has been identified as one of the key pillars for raising the likelihood of food products’ success in the market. Over the ...

A similarity index for comparing coupled matrices

Indahl, Ulf Geir; Næs, Tormod; Liland, Kristian Hovde (Journal article; Peer reviewed, 2018)

Application of sequential and orthogonalised-partial least squares (SO-PLS) regression to predict sensory properties of Cabernet Sauvignon wines from grape chemical composition

Niimi, Jun; Tomic, Oliver; Næs, Tormod; Jeffery, David; Bastian, Susan E.P.; Boss, Paul K. (Journal article; Peer reviewed, 2018)

Cage of covariance in calibration modeling: Regressing multiple and strongly correlated response variables onto a low rank subspace of explanatory variables

Eskildsen, Carl Emil Aae; Næs, Tormod; Skou, P.B.; Solberg, Lars Erik; Dankel, Elin Katinka; Basmoen, Silje A.; Wold, Jens Petter; Horn, Siri S.; Hillestad, B.; Poulsen, Nina A.; Christensen, Mette; Pieper, Theo; Afseth, Nils Kristian; Engelsen, Søren B. (Peer reviewed; Journal article, 2021)

In analytical chemistry, multivariate calibration is applied when substituting a time-consuming reference measurement (based on e.g. chromatography) with a high-throughput measurement (based on e.g. vibrational spectroscopy). ...

Children’s sweet tooth: Explicit ratings vs. Implicit bias measured by the Approach avoidance task (AAT)

Galler, Martina; Mikkelsen, Emma; Næs, Tormod; Liland, Kristian Hovde; Ares, Gastón; Varela, Paula (Peer reviewed; Journal article, 2021)

The study aimed to assess the application of the Approach avoidance task (AAT) with children to measure implicit motivational tendencies towards foods differing in sweetness and calorie content and to explore the relationship ...

Combining analysis of variance and three-way factor analysis methods for studying additive and multiplicative effects in sensory panel data

Romano, Rosaria; Næs, Tormod; Brockhoff, Per Bruun (Peer reviewed; Journal article, 2015)

Data from descriptive sensory analysis are essentially three-way data with assessors, samples and attributes as the three ways in the data set. Because of this, there are several ways that the data can be analysed. The ...

Combining analysis of variance and three-way factor analysis methods for studying additive and multiplicative effects in sensory panel data

Romano, Rosaria; Næs, Tormod; Brockhoff, Per Bruun (Peer reviewed; Journal article, 2015)

Data from descriptive sensory analysis are essentially three-way data with assessors, samples and attributes as the three ways in the data set. Because of this, there are several ways that the data can be analysed. The ...

Common and distinct components in data fusion

Smilde, Age K.; Måge, Ingrid; Næs, Tormod; Hankemeier, Thomas; Lips, Miriam B.; Kiers, Henk A. L.; Acar, Evrim; Bro, Rasmus (Journal article; Peer reviewed, 2017)

In many areas of science, multiple sets of data are collected pertaining to the same system. Examples are food products that are characterized by different sets of variables, bioprocesses that are online sampled with ...

Comparison of different clustering methods for investigating individual differences using choice experiments

Asioli, Daniele; Berget, Ingunn; Næs, Tormod (Journal article; Peer reviewed, 2018)

Comparison of Different Ways of Handling L-shaped Data for Integrating Sensory and Consumer Information

Asioli, Daniele; Nguyen, Quoc Cuong; Varela, Paula; Næs, Tormod (Peer reviewed; Journal article, 2021)

Different approaches for handling L-shaped data are compared for the first time in a study conducted with Norwegian consumers. Consumers (n = 101) valuated eight different yoghurt profiles varying in three intrinsic ...

Brand, Jeanne; Valentin, Dominique; Kidd, Martin; Vivier, Melane A.; Næs, Tormod; Nieuwoudt, Helene H. (Peer reviewed; Journal article, 2020)

Pivot© profile (PP), a method which compares samples to a reference (pivot), has shown profiling potential for complex matrices. However, various aspects require further investigation. This study’s aim was to compare PP ...

Confidence ellipsoids for ASCA models based on multivariate regression theory

Liland, Kristian Hovde; Smilde, Age K.; Marini, Federico; Næs, Tormod (Journal article; Peer reviewed, 2018)

Development of enzyme cocktails for complete saccharification of chitin using mono-component enzymes from Serratia marcescens

Mekasha, Sophanit; Byman, Ida Roksvåg; Lynch, Catherine; Toupalová, Hana; Andera, Ladislav; Næs, Tormod; Vaaje-Kolstad, Gustav; Eijsink, Vincentius Gerardus Henricus (Peer reviewed; Journal article, 2017)

One potential strategy for biorefining of chitin-rich biomass entails enzymatic saccharification, which, so far, has been scarcely explored. Here, saccharification of chitin was explored using response surface methodology ...