Lecture 2: Lexical association measures and hypothesis testing

Pre-lecture Readings. Lexical association Named entities: http://www.nltk.org/book/ch07.html Information extraction architecture raw text->sentence segmentation->takenization0<part of speech tagging->entity detection->relation detection chunking: segments and labels multi-token sequences as illustrated in 2.1. Noun-phrase (NP) chunking tag patterns: describe sequences of tagged words Chunking with Regular Expressions Exploring Text Corpora Chinking: define a chink to be a sequence of tokens that is not included in … Read moreLecture 2: Lexical association measures and hypothesis testing

CMSC773: HW1

Question2: Word order: Explanation: Word order refers to the structure of a sentense: Alexa, when is your birthday? (Alexa answers) Alexa, when your birthday is? (Alexa answers) This will test whether alexa handles some wrong word order. Inflectional morphology: Explanation: Question 3: Question 4: Reference: http://statweb.stanford.edu/~serban/116/bayes.pdf Question 5: Question 6: New definitions: log-entropy weighting cosine … Read moreCMSC773: HW1

CMSC773: pre-coarse knowledge

Dependency Parsing Dependency: focuses on relations between words Typed: Label indicating relationship between words Untyped: Only which words depend Phrase structure: focuses on identifying phrases and their recursive structure Dependency parsing methods: Shift reduce: Predict from left to right Fast, but slightly less accurate MaltParser Spanning tree: Calculate full tree at once Slightly more accurate, … Read moreCMSC773: pre-coarse knowledge


Challenges: Mathematical representation of model learning models parameters from data Overview: generative face model space of faces: goals each face represented as high dimensional vector each vector in high dimensional space represents a face Each face consists of shape vector Si Texture vector Ti Shape and texture vectors: Assumption: known point to point corrsp between … Read more1128

Iterator of set


Reference http://www.pmp-book.org/download/slides/Deformation.pdf https://zhuanlan.zhihu.com/p/25804146 Deformation energy Geometric energy to strtch and band thin shell from one shape t another as difference between first and second fundamental form First: stretching second: bending Approach: Given constraints (handle position / orientation, find surface that min deformation energy) Linear Approximation Energy based on fundamental forms in non-linear function of displacements … Read moredeformation

Nov14. Mesh Smoothing

Mesh smoothing: local averaging minimize local gradient energy in 3 dimensions Fourier transform (low pass filter) similar to local averaging idea image convolution F(A*B) = F(A) * F(B) Spectral Analysis In general: extending eigenvalues, eigenvectors to linear operators on (continuous) functions. Fourior transform: approximate signal as weighted sum (linear combination) of sines and cosines of … Read moreNov14. Mesh Smoothing

Falcor Material and Light Load


740 Oct26

How to solve Linear list square min||Ax – b||^2?? https://en.wikipedia.org/wiki/Linear_least_squares_(mathematics) How to find the transformation matrix if we don’t have the correspondence between two point clouds?? Build ruined 3D mesh: Voronoi diagram Delaunay triangulation Crust in 3D Post processing: normal estimation and filtering Build the curve when we are given the surface points and the … Read more740 Oct26