http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Article/list/2119 Editors: Howard Mark, Mark Electronics, and Jerome Workman Jr., Argose <br>The authors discuss the principles of, and important topics in, applied chemometrics. 2012-05-18T02:45:32Z http://www.spectroscopyonline.com/spectroscopy/Column%3A+Chemometrics+in+Spectroscopy/Classical-Least-Squares-Part-IV-Spectroscopic-Theo/ArticleStandard/Article/detail/713009?contextCategoryId=2119&ref=25 The connection between the mathematics of classical least squares and the graphical displays used to present it is examined in further detail. 2011-02-11T05:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/132011/713009/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/132011/713009/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/132011/713009/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Column%3A+Chemometrics+in+Spectroscopy/Classical-Least-Squares-Part-III-Spectroscopic-The/ArticleStandard/Article/detail/691449?contextCategoryId=2119&ref=25 The authors continue their ongoing discussion of classical least squares with a look at spectroscopic theory. 2010-10-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/422010/691449/1_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/422010/691449/1_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/422010/691449/1_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Column%3A+Chemometrics+in+Spectroscopy/Classical-Least-Squares-Part-II-Mathematical-Theor/ArticleStandard/Article/detail/676255?contextCategoryId=2119&ref=25 The authors continue their discussion of the classical least squares approach to calibration. 2010-06-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/272010/676255/1_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/272010/676255/1_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/272010/676255/1_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Column%3A+Chemometrics+in+Spectroscopy/Classical-Least-Squares-Part-I-Mathematical-Theory/ArticleStandard/Article/detail/669964?contextCategoryId=2119&ref=25 In this month's installment of &#34;Chemometrics in Spectroscopy,&#34; the authors begin a new subseries with the goal of explaining the classical least squares algorithm. 2010-05-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/202010/669964/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/202010/669964/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/202010/669964/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Feature/Statistics-and-Chemometrics-for-Clinical-Data-Repo/ArticleStandard/Article/detail/659273?contextCategoryId=2119&ref=25 This installment of &#34;Chemometrics in Spectroscopy&#34; illustrates the various graphical ways used to observe and interpret comparative clinical quantitative measurement methods. 2010-02-01T05:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/102010/659273/1_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/102010/659273/1_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/102010/659273/1_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Statistics-and-Chemometrics-for-Clinical-Data-Repo/ArticleStandard/Article/detail/600800?contextCategoryId=2119&ref=25 This article describes the application of chemometric methods and statistics for reporting clinical quantitative measurement methods. The equations and terminology are consistent with the Clinical and Laboratory Standards Institute (CLSI) guidelines. These chemometric and statistical methods describe the accuracy and precision of a test method compared to a reference method for a single analyte determination. Part I will introduce these concepts and Part II will discuss the statistical underpinnings in greater detail. 2009-06-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/222009/600800/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/222009/600800/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/222009/600800/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/The-Long-Complicated-Tedious-and-Difficult-Route-t/ArticleStandard/Article/detail/597215?contextCategoryId=2119&ref=25 Columnists Howard Mark and Jerome Workman, Jr. take a final look at the topic of principal components, which has been the subject of six previous installments. 2009-05-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/192009/597215/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/192009/597215/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/192009/597215/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics/The-Long-Complicated-Tedious-and-Difficult-Route-t/ArticleStandard/Article/detail/583778?contextCategoryId=2119&ref=25 This column is a continuation of the set we have been working on to explain and derive the equations behind principal components (1&amp;ndash;5). As we usually do, when we continue the discussion of a topic through more than one column, we continue the numbering of equations from where we left off. 2009-02-01T05:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/092009/583778/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/092009/583778/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/092009/583778/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics/The-Long-Complicated-Tedious-and-Difficult-Route-t/ArticleStandard/Article/detail/557893?contextCategoryId=2119&ref=25 For a system of homogeneous equations to have a solution other than the trivial solution, the determinant of the system of equations must be zero. 2008-10-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/412008/557893/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/412008/557893/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/412008/557893/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/The-Long-Complicated-Tedious-and-Difficult-Route-t/ArticleStandard/Article/detail/525677?contextCategoryId=2119&ref=25 Howard Mark and Jerome Workman, Jr. continue their discussion of the derivation of the principal component algorithm using elementary algebra. 2008-06-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/262008/525677/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/262008/525677/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/262008/525677/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics/The-Long-Complicated-Tedious-and-Difficult-Route-t/ArticleStandard/Article/detail/515898?contextCategoryId=2119&ref=25 Howard Mark and Jerome Workman, Jr. continue their discussion of the derivation of the principal component algorithm using elementary algebra. 2008-05-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/192008/515898/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/192008/515898/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/192008/515898/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics/The-Long-Complicated-Tedious-and-Difficult-Route-t/ArticleStandard/Article/detail/493133?contextCategoryId=2119&ref=25 Howard Mark and Jerome Workman, Jr. continue their discussion of the derivation of the principal component algorithm using elementary algebra. 2008-02-01T05:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/082008/493133/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/082008/493133/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/082008/493133/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics/The-Long-Complicated-Tedious-and-Difficult-Route-t/ArticleStandard/Article/detail/457041?contextCategoryId=2119&ref=25 In this month's installment, columnists Howard Mark and Jerome Workman, Jr. present the derivation of the principal component algorithm using elementary algebra. 2007-09-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/372007/457041/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/372007/457041/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/372007/457041/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Articles/Classical-Least-Squares-Part-IX-Spectral-Results-f/ArticleStandard/Article/detail/773927?contextCategoryId=2119&ref=25 Here, the results are examined after repeating the original experiment in another laboratory. 2012-05-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/202012/773927/chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/202012/773927/chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/202012/773927/chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Statistics-and-Chemometrics-for-Clinical-Data-Repo/ArticleStandard/Article/detail/637199?contextCategoryId=2119&ref=25 In this installment, columnists Jerome Workman and Howard Mark describe the statistical underpinnings related to computation and interpretation of chemometric methods and statistics for reporting clinical quantitative measurement methods. 2009-10-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/442009/637199/1_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/442009/637199/1_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/442009/637199/1_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/What-Can-NIR-Predict/ArticleStandard/Article/detail/436814?contextCategoryId=2119&ref=25 Columnists Howard Mark and Jerome Workman, Jr. discuss the application of chemometric methods of relating measured NIR absorbances to compositional variables of samples. 2007-06-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/252007/436814/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/252007/436814/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/252007/436814/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics/Addendum-to-Chemometrics-in-Spectroscopy/ArticleStandard/Article/detail/436815?contextCategoryId=2119&ref=25 This column is the continuation of a series (1-5) dealing with the rigorous derivation of the expressions relating the effect of instrument (and other) noise to its effects on the spectra we observe. Our first column in this series was an overview. While subsequent columns dealt with other types of noise sources, the ones listed analyzed the effect of noise on spectra when the noise is constant detector noise (that is, noise that is independent of the strength of the optical signal). Inasmuch as we are dealing with a continuous series of columns, on this branch in the thread of the discussion, we again continue the equation numbering and use of symbols as though there were no break. The immediately previous column (5) was the first part of this set of updates of the original columns. 2007-06-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/252007/436815/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/252007/436815/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/252007/436815/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Corrections-to-Analysis-of-Noise-Part-I/ArticleStandard/Article/detail/428070?contextCategoryId=2119&ref=25 Columnists Howard Mark and Jerome Workman, Jr. respond to reader feedback regarding their 14-part column on the analysis of noise in spectroscopy by presenting another approach to analyzing the situation. 2007-05-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/212007/428070/1_chemometrics_thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/212007/428070/1_chemometrics_main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/212007/428070/1_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics/Limitations-in-Analytical-Accuracy-Part-II-Theorie/ArticleStandard/Article/detail/406626?contextCategoryId=2119&ref=25 In the second part of this series, columnists Jerome Workman, Jr. and Howard Mark continue their discussion of the limitations of analytical accuracy and uncertainty. 2007-02-01T05:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/082007/406626/1_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/082007/406626/1_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/082007/406626/1_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Limitations-in-Analytical-Accuracy-Part-I-Horwitzs/ArticleStandard/Article/detail/373775?contextCategoryId=2119&ref=25 September 2006. In the first part of this two-part series, columnists Jerome Workman, Jr. and Howard Mark discuss the limitations of analytical accuracy and uncertainty. 2006-09-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/382006/373775/2_chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/382006/373775/2_chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/382006/373775/2_chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics/Connecting-Chemometrics-to-Statistics---Part-II-Th/ArticleStandard/Article/detail/337289?contextCategoryId=2119&ref=25 In this month's installment of &#34;Chemometrics in Spectroscopy,&#34; the authors again explore that vital link between statistics and chemometrics, this time with an emphasis on the statistics side. 2006-06-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/252006/337289/chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/252006/337289/chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/252006/337289/chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics/Connecting-Chemometrics-to-Statistics---Part-I-The/ArticleStandard/Article/detail/327607?contextCategoryId=2119&ref=25 In this month's installment of &#34;Chemometrics in Spectroscopy,&#34; the authors explore that vital link between statistics and chemometrics, with an emphasis on the chemometrics side. 2006-05-01T04:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/202006/327607/chemometrics-thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/202006/327607/chemometrics-main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/202006/327607/chemometrics_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics/Chemometrics-in-Spectroscopy--Linearity-in-Calibra/ArticleStandard/Article/detail/283246?contextCategoryId=2119&ref=25 At this point in our series dealing with linearity, we have determined that the data under investigation do indeed show a statistically significant amount of nonlinearity, and we have developed a way of characterizing that nonlinearity. Our task now is to come up with a way to quantify the amount of nonlinearity, independent of the scale of either variable, and even independent of the data itself. 2006-01-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Linearity-in-Calibration-Quantifying-Nonlinearity-/ArticleStandard/Article/detail/353179?contextCategoryId=2119&ref=25 At this point in our series dealing with linearity, we have determined that the data under investigation do indeed show a statistically significant amount of nonlinearity, and we have developed a way of characterizing that nonlinearity. Our task now is to come up with a way to quantify the amount of nonlinearity, independent of the scale of either variable, and even independent of the data itself. 2006-01-01T05:00:00Z http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/262006/353179/girl_math_thumb_thumbnail.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/262006/353179/girl_math_main_main.jpg http://www.spectroscopyonline.com/spectroscopy/data/articlestandard/spectroscopy/262006/353179/girl_math_flash_flash.jpg XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics/Chemometrics-in-Spectroscopy--Linearity-in-Calibra/ArticleStandard/Article/detail/257125?contextCategoryId=2119&ref=25 This column presents results from some computer experiments designed to assess a method of quantifying the amount of non-linearity present in a dataset, assuming that the test for the presence of non-linearity already has been applied and found that a measurable, statistically significant degree of non-linearity exists. 2005-12-01T05:00:00Z XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy---Linearity-in-Calibr/ArticleStandard/Article/detail/180829?contextCategoryId=2119&ref=25 Previous methods for linearity testing discussed in this series contain certain shortcomings. In this installment, the authors describe a method they believe is superior to others. 2005-09-01T04:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics/Chemometrics-in-Spectroscopy---Linearity-in-Calibr/ArticleStandard/Article/detail/152638?contextCategoryId=2119&ref=25 This third part in a series on non-linearity looks at other tests and how they can be applied in laboratories that must meet FDA regulations. 2005-04-01T05:00:00Z XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy---Linearity-in-Calibr/ArticleStandard/Article/detail/149151?contextCategoryId=2119&ref=25 A discussion of how DW can be a powerful tool when different statistical approaches show different sensitivities to particular departures from the ideal. 2005-03-01T05:00:00Z XML http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-and-PAT-What-Does-It-All-Mean-PDF/ArticleStandard/Article/detail/143239?contextCategoryId=2119&ref=25 A paradigm shift is required for chemists and engineers to best utilize chemometrics in their processes. This change demands that one not be too fixated upon ideal textbook thermodynamic models but instead continually check these models using real-time data input and chemometric analysis. The author discusses implementation strategies and the benefits that chemometrics can bring to the process environment. 2005-01-02T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy---Linearity-in-Calibr/ArticleColumn/Article/detail/142104?contextCategoryId=2119&ref=25 The authors at how linearity considerations fit into the broader scheme of calibration theory, and discuss methods for testing data for non-linearity. 2005-01-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Derivatives-in-Spectr/ArticleColumn/Article/detail/137753?contextCategoryId=2119&ref=25 Howard Mark and Jerry Workman revisit their recent series on derivatives, marking their 100th column contribution to Spectroscopy. 2004-12-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Comparison-of-Goodnes/ArticleColumn/Article/detail/128008?contextCategoryId=2119&ref=25 Part IV of the series describes the use of confidence limits in data analysis for calculating slope and intercept. 2004-10-01T04:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Comparison-of-Goodnes/ArticleStandard/Article/detail/103325?contextCategoryId=2119&ref=25 The authors continue their discussion of computing confidence limits for the correlation coefficient in developing a calibration for quantitative analysis. 2004-07-01T04:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Comparison-of-Goodnes/ArticleColumn/Article/detail/97165?contextCategoryId=2119&ref=25 The authors continue their discussion of the correlation coefficient in developing a calibration for quantitative analysis. 2004-06-01T04:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics/Chemometrics-in-Spectroscopybr-/ArticleColumn/Article/detail/91683?contextCategoryId=2119&ref=25 The authors begin a discussion of the statistical tools available to compare and correlate two or more data sets. 2004-04-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/BChemometricsBbr/ArticleStandard/Article/detail/84517?contextCategoryId=2119&ref=25 The fourth installment in the continuing series concentrates on issues that are amenable to mathematical analysis. 2004-01-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Derivatives-in-Spectroscopy-Part-III-Computing-the/ArticleColumn/Article/detail/79729?contextCategoryId=2119&ref=25 This series about derivatives in spectroscopy continues with a discussion about some of the practical aspects of computing the derivative. 2003-12-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Derivatives-in-Spectroscopy-Part-II-The-True-Deriv/ArticleColumn/Article/detail/69304?contextCategoryId=2119&ref=25 The authors continue their series on derivatives in spectroscopy. 2003-09-01T04:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Derivatives-in-Spectroscopy-Part-I-The-Behavior-of/ArticleColumn/Article/detail/52618?contextCategoryId=2119&ref=25 The authors begin a new series of columns about derivatives of spectra. 2003-04-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Analysis-of-Noise-Par/ArticleStandard/Article/detail/43578?contextCategoryId=2119&ref=25 Part 14 of the ongoing series. 2003-01-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy--Analysis-of-Noise-Pa/ArticleStandard/Article/detail/41230?contextCategoryId=2119&ref=25 Part 13 of the ongoing series-within-a-series. 2002-12-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Analysis-of-Noise-Par/ArticleStandard/Article/detail/43580?contextCategoryId=2119&ref=25 Part 13 of the ongoing series. 2002-12-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Analysis-of-Noise-Par/ArticleColumn/Article/detail/34212?contextCategoryId=2119&ref=25 Part 12 of the ongoing series. 2002-10-01T04:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Analysis-of-Noise-Par/ArticleStandard/Article/detail/22071?contextCategoryId=2119&ref=25 The series continues. 2002-06-01T04:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Analysis-of-Noise----/ArticleStandard/Article/detail/8332?contextCategoryId=2119&ref=25 This column continues the series dealing with the rigorous derivation of the expressions relating the effect of instrument (and other) noise to their effects to the spectra observed. 2002-01-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Analysis-of-Noise-Par/ArticleStandard/Article/detail/43595?contextCategoryId=2119&ref=25 Part four of the ongoing series. 2001-02-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Analysis-of-Noise-Par/ArticleStandard/Article/detail/43594?contextCategoryId=2119&ref=25 Part three of the ongoing series. 2000-12-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Analysis-of-Noise-Par/ArticleStandard/Article/detail/43592?contextCategoryId=2119&ref=25 Part two of the ongoing series 2000-11-01T05:00:00Z PDF http://www.spectroscopyonline.com/spectroscopy/Chemometrics+in+Spectroscopy+Column/Chemometrics-in-Spectroscopy-Analysis-of-Noise-Par/ArticleStandard/Article/detail/43590?contextCategoryId=2119&ref=25 Part I of the ongoing series. 2000-10-01T04:00:00Z PDF