comparing and choosing models
Copulas and credit models doc
... assertion we review the concept of copulas and state a simple proposition which is the basis of comparing existing models and defining new and structurally different models Copulas Copulas are simply the ... function of a standard d-dimensional normal random vector with correlation matrix R, and Φ is the distribution function of univariate Ga standard normal CR is known as the Gaussian copula, and this ... Variable Models To understand that the use of the Gaussian copula leads to models that are structurally equivalent we introduce a formal definition of equivalence for latent variable models and present...
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Báo cáo khoa học: "Large-Scale Cross-Document Coreference Using Distributed Inference and Hierarchical Models " pptx
... methods of context similarity, and concluded that agglomerative clustering provides effective means of inference (Gooi and Allan, 2004) Pedersen et al (2006) and Purandare and Pedersen (2004) integrate ... Reading and Learning to Read Andrew McCallum and Ben Wellner 2004 Conditional models of identity uncertainty with application to noun coreference In Neural Information Processing Systems (NIPS) Andrew ... of hand-tuned weights, dictionaries, and heuristics to define similarity for name disambiguation (Blume, 2005; Baron and Freedman, 2008; Popescu et al., 2008) These approaches are greedy and differ...
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Báo cáo khoa học: "Extracting Opinion Expressions and Their Polarities – Exploration of Pipelines and Joint Models" pot
... segmentation and polarity labeling and compare them to the joint opinion extractor and polarity classifier by Choi and Cardie (2010) Secondly, we extend the global structure approach and add features ... points in intersection F-measure and points in recall The improvements over Choi and Cardie (2010) ranged between 10 and 15 in overlap F-measure and between 17 and 24 in recall This is not only ... Facts, Opinions and Bias in Time, and under grant 247758: Trustworthy Eternal Systems via Evolving Software, Data and Knowledge (EternalS) References Stephan Bloehdorn and Alessandro Moschitti...
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Báo cáo khoa học: "Joint and conditional estimation of tagging and parsing models∗" docx
... The previous section compared similiar joint and conditional tagging models This section compares a pair of joint and conditional parsing models The models are both stochastic shift-reduce parsers; ... Lari and S.J Young 1990 The estimation of Stochastic Context-Free Grammars using the Inside-Outside algorithm Computer Speech and Language, 4(35-56) Andrew McCallum, Dayne Freitag, and Fernando ... investigates closely related joint and conditional tagging models (the latter can be regarded as a simplification of the Maximum Entropy Markov Models of McCallum et al (2000)), and shows that MLEs outperform...
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Interest Rates and The Credit Crunch: New Formulas and Market Models potx
... November 25, 2008 Strikes and vols are expressed as differences from the respective ATM values Source: Bloomberg Andersen and Andreasen (2002), Piterbarg (2005), Wu and Zhang (2006) and Zhu (2007) In ... the pricing formulas for caplets and swaptions Section introduces stochastic volatility and derives the dynamics of rates and volatilities under generic forward and swap measures Hints on the derivation ... opportunities In fact, let us denote the FRA rate and the forward rate implied by the two deposits with maturity T1 and T2 by FX and FD , respectively, and assume that FD > FX One may then be tempted...
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Báo cáo khoa học: "Combining data and mathematical models of language change" ppt
... mistransmitted (Models 1, 3, 5), and how the N and V probabil- ities acquired by a given learner are coupled In ˆ Model there is no coupling (ˆ t and βt learned α independently), in Models 2–3 coupling takes ... −k2 k2 t t PB (k1 , k2 ) ≡ (2) αt and βt , the probability that a random member of Gt produces N and V examples as σ´ , are the σ ˆ ensemble averages of αt and βt over all members ˆ of Gt Because ... models are analyzed, allowing for much more detailed models of language learning and usage than those considered here (e.g Choudhury et al., 2006; Minett & Wang, 2008; Baxter et al., 2009; Landsbergen,...
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Báo cáo khoa học: "DATR Theories and DATR Models" ppt
... : , and similarly elsewhere The theory defines the properties of seven nodes: an abstract V e r b node, nodes E n V e r b , A u x and M o d a l , and three abstract lexemes W a l k , M o w and ... the other hand, the value of 1The syntax presented in (Evans and Gazdar, 1989a; Evans and Gazdar, 1989b) permits nodes and paths to stand as local descriptors However, these additional forms can ... templates and inheritance In Ted Briscoe, Valeria de Paiva, and Ann Copestake, editors, Inheritance, Defaults and the Lexicon, pages 13-37 Cambridge University Press, Cambridge Greville Corbett and...
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Báo cáo khoa học: "Structural, Transitive and Latent Models for Biographic Fact Extraction" pdf
... improvement to the Ravichandran and Hovy (2002) algorithm based on Partially Untethered Contextual Pattern Models Learning a position-based model using absolute and relative positions and sequential order ... in question and, there has been a plethora of work in the seed-based bootstrapping literature which addresses this problem (Ravichandran and Hovy, 2002; Thelen and Riloff, 2002; Mann and Yarowsky, ... “A1 p A2 q A3 ”, where p and q are and respectively, is given using the rote extractor model probability as in (Ravichandran and Hovy, 2002; Mann and Yarowsky 2005): x,y∈r...
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Báo cáo khoa học: "The Formal and Processing Models of CLG" docx
... equality constraints between terms and formulas built from the atomic constraints using the standard logic operators, namely disjunction, conjunction and negation, and that a notion of validity can ... t':c' and t":c" and c is logically equivalent to d, then t:d is also a unifier Similarly if, for some variable x and term r, we can derive x=r from c, then [r/x](t:c) is also a unifier for t':c' and ... w v a r i a b l e s and p( ) which can be defined is by: and f o r c o n s t r a i n t s ( k e e p i n g in m i n d that implication and e q u i w d e n c e are just shorthands): Rewriting lrue...
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comparing and contrasting the lottery and the ones who wal
... cornmeal and grease once a day, and is allowed no desirable human contact or communication In "The Lottery" the sacrifice is simply stoned to death by the remaining community, including friends and ... some youngsters and "sometimes also a man or women much older" will walk alone "straight out of the city of Omelas, through the beautiful gates"(para 14) Instead of standing up and saying they ... lottery"(para 31) and that "Some places have already quit the lotteries"(para 33), and he replies as a defender of the ritual by referring to the quitters as a "Pack of crazy fools" and says "There's...
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comparing and contrasting the two videos of romeo and juliet
... are so different, but if I had to choose, I’d choose the Luhrmann version, starring Claire Danes and Leonardo DiCaprio, just because I loved the ending ...
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Query Languages and Data Models for Database Sequences and Data Streams doc
... takes new tuples and a current state and output new tuples and a modified state and pass, prop, keep are three behavior functions that take punctuation marks and state as input and returns additional ... etc.) always return a sequence of length one and they are all nonmonotonic, and therefore blocking Continuous count and sum are monotonic and nonblocking, and thus suitable for continuous queries ... equivalent defines the two queries pUq and coalscp, the first on P and Q and the second on P only We will refer to them as the coalesce query and the until query, and observe that they are monotonic...
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PREDICTING FINANCIAL DISTRESS OF COMPANIES: REVISITING THE Z-SCORE AND ZETA® MODELS
... Z-Score and ZETA® Models Background This paper discusses two of the venerable models for assessing the distress of industrial corporations These are the so-called Z-Score model (1968) and ZETA® ... sized distressed firms and is unquestionably relevant to both small and large firms Variable Selection After the initial groups are defined and firms selected, balance sheet and income statement ... of the model and in holdout sample testing Sample and Data Characteristics and Statistical Methodology Sample Characteristics Our two samples of firms consist of 53 bankrupt firms and a matched...
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Báo cáo khoa học: "Low-cost Enrichment of Spanish WordNet with Automatically Translated Glosses: Combining General and Specialized Models" pdf
... language and translation models and on their combination with general models in order to achieve a proper balance between precision (specialized in-domain models) and recall (general out-of-domain models) ... between ‘EU’ and ‘WNG’ models ‘EU’ models provides recall, for instance by suggesting translation candidates for ‘bombs’ or ‘price below’ ‘WNG’ models provide precision, for instance by choosing ... ‘WNG’ and ‘EU+WNG’ systems FE , FW and FEW refer to the GTM (e = 1) F-measure attained by the ‘EU’, ‘WNG’ and ‘EU+WNG’ systems, respectively ‘Source’, OutE , OutW and OutEW refer to the input and...
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Báo cáo khoa học: "Collapsed Consonant and Vowel Models: New Approaches for English-Persian Transliteration and Back-Transliteration" ppt
... Automatic transliteration and back-transliteration by decision tree learning In Conference on Language Resources and Evaluation, pages 1135–1411 Sarvnaz Karimi, Andrew Turpin, and Falk Scholer 2006 ... transliteration In String Processing and Information Retrieval, pages 255–266 Alexandre Klementiev and Dan Roth 2006 Weakly supervised named entity transliteration and discovery from multilingual ... which script either of them use To simplify, semi-vowels and approximants (sounds intermediate between consonants and vowels, such as “w” and “y” in English) are treated according to their target...
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Báo cáo khoa học: Disease-related mutations in cytochrome c oxidase studied in yeast and bacterial models pptx
... both in human and yeast cells and leads to the loss of subunit in R sphaeroides due to instability and protein degradation In conclusion, on the basis of the yeast and bacterial models, the human ... Based on densitometry measurements (see Materials and methods) G78S and A200T contain as much subunit as the wild-type oxidase and DF94–F98 in lanes D and E contains 25% of the normal amount of ... vesicles were measured using 0.1 lM enzyme and 6.5 lM cytochrome c2+, A200T with 0.15 lM enzyme and 5.5 lM cytochrome c2+, and DF94–F98 with 0.08 lM enzyme and lM cytochrome c2+, all in 50 lM Hepes/KOH...
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Solar Radiation and Daylight Models doc
... many-tinted flowers; Then roving with the wild and wandering hours, Over earth and air and ocean’s zone, In a new birth, I dived and flew, And crept and ran, And all the secret of my essence drew Within ... HOURLY SLOPE IRRADIATION AND ILLUMINANCE Introduction Slope beam irradiance and illuminance Sky clarity indices Sky-diffuse irradiance models Slope illuminance models Radiance and luminance distributions ... solar radiation and other meteorological parameters (r) Web sites that provide solar radiation and daylight data and other related information In response to a demand from readers and reviewers...
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Exploring Challenges, Progress, and New Models for ENGAGING THE PUBLIC in the CLINICAL RESEARCH ENTERPRISE Clinical Research Roundtable Workshop Summary pot
... the Army’s Medical Research and Materiel Command in 1993 and involves consumers, the Department of Defense (DOD), and scientists and clinicians from both academia and industry The CDMRP cycle ... of new research findings and findings on health outcomes; and the availability of financial and other data to monitor and assess the different components of patient- and population-based health ... efforts and committee discussion time; and • participation costs such as time for learning and ensuring that participant members can stand behind their views when questioned by scientists and others...
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business economics & finance with matlab gis and simulation models - patrick l.anderson
... Business Economics and Finance with MATLAB®, GIS, and Simulation Models Business Economics and Finance with MATLAB®, GIS, and Simulation Models Patrick L.Anderson Principal, Anderson Economic ... MATLAB and Simulink environment and provides guidelines for creating and using models in this environment Style guidelines are presented that help make such models easier to understand and debug ... policy, and other chapters, and formatted figures and document files for publication Arianna Pieper and Megan Boone, who formatted, corrected, adjusted the figures, and checked the manuscript—and...
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the theory of games and game models lctn - andrea schalk
... −2x + and y = 3x + This can be done, for example, by equating the two right hand sides −2x + = 3x + 1, and isolating x: 5x = and so x = 4/5 Note that x gives the proportion of strategy 2, and that ... wait a random amount of time and try again Using a random delay means that packets are unlikely to collide repeatedly Again, the algorithm is fair because everybody uses the same algorithm, and thus ... her hand, which they reveal simultaneously If Bob selects the King then the highest card chosen wins the pot and the game ends If Bob chooses the Joker and Alice the Queen they split the pot and...
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Tìm thêm: khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản khảo sát chương trình đào tạo gắn với các giáo trình cụ thể xác định thời lượng học về mặt lí thuyết và thực tế tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam nội dung cụ thể cho từng kĩ năng ở từng cấp độ phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ hệ số công suất cosp fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến dòng điện stato i1 fi p2 động cơ điện không đồng bộ một pha thông tin liên lạc và các dịch vụ chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008 chỉ tiêu chất lượng 9 tr 25