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A geometric interpretation of r-precision and its correlation with average precision

Javed A. Aslam, Emine Yilmaz, Virgiliu Pavlu
2005 Proceedings of the 28th annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR '05  
It is well known that average precision and R-precision are highly correlated and similarly robust measures of performance, though the reasons for this are not entirely clear.  ...  In this paper, we give a geometric argument which shows that under a very reasonable set of assumptions, average precision and R-precision both approximate the area under the precision-recall curve, thus  ...  In this paper, we provide a geometric interpretation of R-precision which shows that under a very reasonable set of assumptions, average precision and R-precision both approximate the area under the precision-recall  ... 
doi:10.1145/1076034.1076134 dblp:conf/sigir/AslamYP05a fatcat:j23pkvdg7vhi7ksvzfqltzk4om

Two-particle Direct Photon-Jet Correlation Measurements in PHENIX [article]

Justin Frantz
2009 arXiv   pre-print
particle suppression level Raa, which can be interpreted as a qualitative confirmation of the basic geometrical picture of jet suppression at RHIC.  ...  With a model dependent extraction method, the average sqrt() at this center of mass energy in p+p is found to be in the vicinity of 3 GeV, consistent with analysis of di-hadron (di-jet) correlations.  ...  bins consistent with the single particle suppression level R AA , which can be interpreted as a qualitative confirmation of the basic geometrical picture of jet suppression at RHIC.  ... 
arXiv:0901.1393v1 fatcat:okdgrvyr7vcfhk736apagm72ce

What the F-measure doesn't measure: Features, Flaws, Fallacies and Fixes [article]

David M. W. Powers
2019 arXiv   pre-print
The F-measure or F-score is one of the most commonly used single number measures in Information Retrieval, Natural Language Processing and Machine Learning, but it is based on a mistake, and the flawed  ...  assumptions render it unsuitable for use in most contexts!  ...  TREC 5 are MAP (Mean Average Precision) and R-Precision.  ... 
arXiv:1503.06410v2 fatcat:tmpxn4i7l5hfbjfzxrq5y2hyl4

The Significance of Recall in Automatic Metrics for MT Evaluation [chapter]

Alon Lavie, Kenji Sagae, Shyamsundar Jayaraman
2004 Lecture Notes in Computer Science  
Recent research has shown that a balanced harmonic mean (F1 measure) of unigram precision and recall outperforms the widely used BLEU and NIST metrics for Machine Translation evaluation in terms of correlation  ...  While this may seem unexpected, since BLEU and NIST focus on n-gram precision and disregard recall, our experiments show that correlation with human judgments is highest when almost all of the weight is  ...  -Use of Geometric Averaging of N-grams: Geometric averaging results in a score of "zero" whenever one of the component n-gram scores is zero.  ... 
doi:10.1007/978-3-540-30194-3_16 fatcat:nwclbworqbad7cdjevbb72ijum

Geometry of GPS dilution of precision: revisited

R. Santerre, A. Geiger, S. Banville
2017 GPS Solutions  
To facilitate the comparison of the solutions with and without a receiver clock parameter, the average of receiver-satellite unit vectors is introduced to interpret the DOP factors geometrically.  ...  We revisit the geometric interpretation of GPS Dilution of Precision (DOP) factors giving emphasis on the geometric impact of the receiver clock parameter on conventional GPS positioning solution.  ...  Acknowledgements The first author would like to acknowledge NSERC (Natural Sciences and Engineering Research Council of Canada) for financial support of his GPS research.  ... 
doi:10.1007/s10291-017-0649-y fatcat:wft2oqidgffbhmbb4xks2buwyq

Evaluation Evaluation a Monte Carlo study [article]

David M. W. Powers
2015 arXiv   pre-print
Without knowledge of the Bias and Prevalence of the contingency being tested, or equivalently the expectation due to chance, the simple conditional probabilities Recall, Precision and Accuracy are not  ...  empirically using a Monte Carlo simulation.  ...  The relatively good fit of Kappa to Correlation and Informedness is illustrated in Fig. 2 , along with the poor fit of the Rank Weighted Average and the Geometric and Harmonic (F-factor) means.  ... 
arXiv:1504.00854v1 fatcat:a3u6pn5pvbgizp46fuie3p2pou

Interferometric constraints on quantum geometrical shear noise correlations

Aaron Chou, Henry Glass, H Richard Gustafson, Craig J Hogan, Brittany L Kamai, Ohkyung Kwon, Robert Lanza, Lee McCuller, Stephan S Meyer, Jonathan W Richardson, Chris Stoughton, Ray Tomlin (+1 others)
2017 Classical and quantum gravity  
The first-generation optical layout is sensitive to quantum geometrical noise correlations with shear symmetry---those that can be interpreted as a fundamental noncommutativity of space-time position in  ...  By measuring with Planck precision the correlation of position variations at spacelike separations, the Holometer searches for faint, irreducible correlated position noise backgrounds predicted by some  ...  Geometrical noise of this symmetry can be interpreted as a fundamental noncommutativity of positions in space and time.  ... 
doi:10.1088/1361-6382/aa7bd3 fatcat:5ca6s3p3g5hlxmrawhz3jk3eqi

Evaluation: from precision, recall and F-measure to ROC, informedness, markedness and correlation [article]

David M. W. Powers
2020 arXiv   pre-print
Finally we demonstrate elegant connections between the concepts of Informedness, Markedness, Correlation and Significance as well as their intuitive relationships with Recall and Precision, and outline  ...  Commonly used evaluation measures including Recall, Precision, F-Measure and Rand Accuracy are biased and should not be used without clear understanding of the biases, and corresponding identification  ...  , as well as a bias-weighted average of Precision and Inverse Precision.  ... 
arXiv:2010.16061v1 fatcat:k5jgpfviojfchgbs4wadnfee2q

Establishing comprehensive, quantitative criteria for detection of restenosis and remodeling after percutaneous transluminal coronary angioplasty

Nicoletta B. de Cesare, Paula R. Williamson, Noel B. Moore, Scott F. DeBoe, G.B.John Mancini
1992 American Journal of Cardiology  
A high intra-and interobserver reproduclbiSty of all absohrte measurements was found, wtth the highest correlations for minimum diameter and cross-secttonal area (interobserver, r = 0.85 and O&St intraobserver  ...  In both circumstances, a poor correlation between relative densitometric crosssectional area from orthogonal views was found, whereas geometric elliptical cross-sectional area correfated quite well with  ...  In contrast, a good correlation (r = 0.85) was found between geometric elliptical crosssectional area and the average of percent densitometric cross-sectional area in orthogonal views.  ... 
doi:10.1016/0002-9149(92)90679-s pmid:1729871 fatcat:ygp65674tvd2tfxmec6gsmoj54

Characterization of Controlled Pore Glasses: Molecular Simulations of Adsorption [chapter]

Lev D. Gelb, K.E. Gubbins
2000 Studies in Surface Science and Catalysis  
Using a recently developed molecular dynamics procedure, we have prepared a series of models of controlled pore glasses with a range of porosities and pore sizes.  ...  These isotherms can be analyzed with standard methods to obtain pore size distributions and surface areas, which can be compared with exact results obtained from the model glasses' atomic structures.  ...  CTS-9896195) for their support of this work and for the Metacenter grant (no. MCA93S011P) and NRAC allocation (no.  ... 
doi:10.1016/s0167-2991(00)80009-9 fatcat:t6j2xvqjsfa67o4uxn576llmda

Pattern of perturbations from a coherent quantum inflationary horizon [article]

Craig Hogan
2020 arXiv   pre-print
New exact symmetries are predicted, such as a vanishing temperature correlation function at 90 degrees angular separation, that can be tested with current data.  ...  It is shown that the reduction of quantum states on nearly-spherical emergent horizon surfaces around each observer creates a distinctive pattern whose correlations in the angular domain differ from the  ...  A point mass falling into a black hole of radius R raises a tide and creates a coherent distortion of the horizon with a signficant quadrupolar component on a timescale c/R.  ... 
arXiv:1908.07033v5 fatcat:l5d3imfrbjafrhzkolsnl5egu4

A Region-based Matching Approach for 3D-Roof Reconstruction from HR Satellite Stereo Pairs

Nesrine Chehata, Franck Jung, Marc Pierrot Deseilligny, Georges Stamon
2003 International Conference on Digital Image Computing: Techniques and Applications  
This study is a part of a global project on urban scenes interpretation using high resolution satellite images.  ...  The novelty consists in dedicating algorithms to satellital context to make them more robust to noise and to deal with low stereopair Base to Height ratio.  ...  Acknowledgment This work has been carried out as a collaboration among the IGN 1 , the CNES 2 and the University of Paris 5 (Research lab SIP/CRIP5).  ... 
dblp:conf/dicta/ChehataJDS03 fatcat:kvw72mfolbcajb4oxqqmhjpvae

Results of the Centers for Disease Control experimental proficiency testing survey for serum alpha-fetoprotein

R N Taylor, V A Przybyszewski, E Gary
1983 Journal of Clinical Microbiology  
Results were analyzed for qualitative and quantitative relative accuracy, precision on duplicate and nonduplicate (dilution-related) samples, parallelism, and comparability of units.  ...  This procedure improved the overall geometric standard deviation among laboratories on quantitative results from 1.300 to 1.088 and compressed the limits for consensus ranges of results to 40% of that  ...  ACKNOWLEDGMENTS Significant contributions to experiment design, data analysis, interpretation of results, and preparation of this report were made by the following Centers for Disease Control personnel  ... 
pmid:6186692 pmcid:PMC272582 fatcat:ovotkwfxznbrdmn56s3wocsnee

Automatic Identification of Morphometric Landmarks in Digital Images

S. Palaniswamy, N. Thacker, C. P. Klingenberg
2007 Procedings of the British Machine Vision Conference 2007  
Discussion The pilot study will be scaled up with minor modifications and this automated method will be used in a scientific study with a large dataset of 1600 images of different species of Drosophila  ...  The method is intrinsically robust to changes in shape and based firmly on the statistical interpretation of data analysis.  ...  The figures 1(a) & 1(b) show the system performance with an average of the best 3 of 5 reference images and best 5 of 11 reference images using the least squares match.  ... 
doi:10.5244/c.21.77 dblp:conf/bmvc/PalaniswamyTK07 fatcat:zqa2jpfckza6bpqazihsyefxt4

Click-based evidence for decaying weight distributions in search effectiveness metrics

Yuye Zhang, Laurence A. F. Park, Alistair Moffat
2009 Information retrieval (Boston)  
Our results show that for measures with static distributions (that is, utility weighting schemes for which the weight vector is independent of the relevance vector), the geometric weighting model employed  ...  One plausible way of calculating an effectiveness score for a system run is to compute the inner-product of the run's relevance vector and a "utility" vector, where the ith element in the utility vector  ...  For example, precision can be biased to include the notion of recall by measuring it over a range of recall percentiles, or at depth R in the case of R-precision.  ... 
doi:10.1007/s10791-009-9099-7 fatcat:zaxd4u6sdfdhjj4qvgkskxx6hy
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