19 skills found
howl-anderson / Hanzi Chaizi汉字拆字库，可以将汉字拆解成偏旁部首，在机器学习中作为汉字的字形特征 | Hanzi Decomposition Library allows Chinese characters to be broken down into radicals and components, which can be used as character shape features in machine learning.
NVlabs / NvdiffrecmcOfficial code for the NeurIPS 2022 paper "Shape, Light, and Material Decomposition from Images using Monte Carlo Rendering and Denoising".
FENGGENYU / CVPR2019 PartNetCode for PartNet: A Recursive Part Decomposition Network for Fine-grained and Hierarchical Shape Segmentation
brabbitdousha / MIRReS ReSTIR Nerf Mesh[ICLR 2025]Source Code for the Paper "MIRReS: Inverse Rendering for Shape, Light, and Material Decomposition using Multi-Bounce Path Tracing and Reservoir Sampling"
Sephirex-X / ADNet[ICCV 2023] ADNet: Lane Shape Prediction via Anchor Decomposition
alemuntoni / HeightFieldDecompositionSource code for Transaction on Graphics 2018 paper "Axis-Aligned Height-Field Block Decomposition of 3D Shapes"
rkjones4 / SHREDSHRED: 3D Shape Region Decomposition with Learned Local Operations -- SIGGRAPH Asia 2022
rubelchowdhury20 / 2D Face Reconstruction2D face reconstruction using SFSNet, and end-to-end learning framework for producing an accurate decomposition of an unconstrained human face image into shape, reflectance and illuminance.
davidecoluzzi / Shape And Action Unit Extraction Of 3D Human Face Meshes By Multilinear Dimensionality ReductionThis work aims to create a model able to discern the parameters of shape and action units from 3D human face meshes. The adopted dataset was acquired by using Kinect and consist of 360 3D representation of human faces. More precisely, 20 different users performed 6 specific facial expressions (happy, sad, scared, angry, disgusted, surprised) by using 3 emphasis degree (low, medium, high). The collected dataset was labelled and then modelled in a three-dimensional tensor. Then, a multilinear dimensionality reduction technique (Higher-order singular value decomposition - HOSVD) was applied to separately extract the face deformation features related to the shape units and the action units. These specific features are finally exploited to independently rebuild the user human face by using much fewer data with respect to the starting dataset, specifically the 83% less, maintaining approximately 90% of variance.
aAbdz / CylShapeDecompositionCylindrical Shape Decomposition
macolominas / SAMDA MATLAB package for Shape-adaptive mode decomposition method proposed in "Decomposing non-stationary signals with time-varying wave-shape functions" by Marcelo A. Colominas and Hau-Tieng Wu.
HosseinTohidi / L Shaped DecompositionNo description available
BardOfCodes / SuperfitFit compact primitive assemblies (SuperFrusta, cuboids, superquadrics) to 3D shapes via residual fitting. CVPR 2026.
cgtuebingen / ShinobiSHINOBI: Shape and Illumination using Neural Object Decomposition via BRDF Optimization In-the-wild
ECheynet / TDDThe Time domain decomposition (TDD) [1] is an output-only method to extract mode shapes of a structure.
joaquinr-uner / TvWSEImplementation of the adaptive time-varying wave-shape extraction (tvWSE) algorithm for analysis and decomposition of oscillatory signals with time-varying wave-shape
tom-bourjala / Blender CoACDBlender Plugin for Convex Decomposition using CoACD. This addon integrates CoACD into Blender, enabling efficient geometry processing by decomposing complex shapes into convex components. It enhances collision detection and interaction while adhering to Unreal Engine FBX collision conventions for easy export.
aiok03 / Final MiningDescriptive statistics and Explanatory data analysis In order to have an idea of the received data, we look through our table transactions and train. The shape of the train is 6000 rows and 2 columns (client_id and target – gender). Also we considered the info of transactions and noticed that there are no empty values, all of them are equal to 130039. After that we merged two tables and called it as data. To display unique codes and types we used ‘unique’ function and noticed that unique codes 173 and unique types 61. Using ‘describe’ function we can see minimal code, type, sum and the same parameters but maximum. The first hypothesis was to find what gender makes lots of requests. For conveniency we used for loop to make values in percentile view. And according to the barplot the biggest number of processes are made by females. The second hypothesis was to find the code with the biggest sum. For that we grouped by code and counted the mean of all sums. This list we converted from series to frame for further working process. The problem was that the code interpreted the code as the index, that’s why we have to fix it with ‘reset_index’ function. After that we plotted the graph and noticed that the most high sum is with 4722 code and proved it with another code under the graph. The third hypothesis is to find the distribution of sums relatively to the gender. But the first graph didn’t replaced this information because the scatter of the data is too high. The sign is not normally distributed and it is not symmetrical. It is hard to asses, that’s why we grouped information by gender and counted mean of the sum. According to this information we noticed that males spend more money than women. The same process we made with median and got the same conclusion. And since the mean and median values are not equal, our assumption about unnormalized data was proved. The last hypothesis was to find number of clients for each type and code – to find the most popular request within clients. For that we applied ‘str’ to each parameter for correct visualization on the graph. Counted the number of each request for type and code and reflected it in the graphs. According to them the most popular is 1010 type and 6011 code. Lastly, for further working process we returned type and code to the int type. Feature engineering Client’s balance condition We took every sum from dataframe data, grouped for every client and found the sum for each of them. We calculated the income and expenses for each client. Some clients with minus value made more expenses, some of them not, that means that he got more income. In minus is 0, in plus is 1. RFM In RFM section we started from Recency. For each client we grouped the information about them and found the maximum date where the transaction was done. The datetime column consisted from two values – date and time, for further working process in future engineering section we divided them for different columns. The most recent day we equaled to 457 and according to this value started to count the recency of last transactions for each client by subtraction. The next step is Frequency. We used ‘group by’ function and counted appearance of each client in our database. The last step is Monetary (to count expenses). Using group by function and condition, where the sum is less than 0 (expenses are negative values), we counted the total expenses of each client and noticed one point. That some clients didn’t spend any money at all. Segmentation based on RFM We merged all the tables into one and made a rank according to the best values in each segment using percentage. Using the formula we divided clients by 5 score scale, by this database and elbow method, plotted the graph, where 3 clusters were optimal solution. With KMeans library we plotted the k-mean illustration of clients according to the distance from randomly chosen centroids, showed distribution of clients in clusters. After the work done we gathered basic table with clusters using prefixes to each of them. Clustering for codes Now we'll work with codes to create clustering codes, and we'll utilize TF IDF and k-means to do it. We will also employ limitization, tokenization, and stop word elimination. We import the pymorphy2 library for limiting, and limiting is when words take their original form. Tokenization by sentences is the process of dividing a written language into component sentences. We also need to delete stop words, a stop word is a commonly used word (such as “the”, “a”, “an”, “in”) that a search engine has been programmed to ignore, both when indexing entries for searching and when retrieving them as the result of a search query. We would not want these words to take up space in our database, or taking up valuable processing time. We also make use of the re – Regular expression operations library, which is a library for regular expression operations. In this section we also use MorphAnalyzer() - Morphological analysis is the identification of a word's features based on how it is spelt. Morphological analysis does not make use of information about nearby words. For morphological analysis of words, there is a MorphAnalyzer class in pymorphy2. If we apply directly the clustering on those matrix, we will have issues as our matrices are very sparse and the computation of distances will be a mess. What we can do, is to perform IS to reduce data to a dense matrix of dimension 156 by applying SVD. Singular Value Decomposition (SVD) is one of the widely used methods for dimensionality reduction. We defined that 156 is the right number in our case. We used the Silhouette score to evaluate the quality of clusters created using K-Means. By Silhouette score we chose number of clusters and performed k means clustering on our tf-idf matrix. Then we tried to do a visualization of our clusters and we applied t-sne . t-SNE is a tool to visualize high-dimensional data. And then we added clusters to data and df dataframe. Finally we created word cloud by our clusters Clustering for types Data cleaning for types Firstly, we noticed that there were 155 types. However in data, there are 61 types. When we merge the data and that types, the total number of types become 58. This means that 3 types have no any description and that’s why we replace them with the mode value. Also we found that some types have type description ‘н.д’ which means no data and their total number in data is 26. Also we noticed that type description repeats for several types and we dropped duplicates and replaced them with first accurancy type in data. Creating clusters for types We manually divided them into the 5 categories according to dome key words in description. And merged them with our dataframe. Then we noticed outliers in recency and frequency. We found 0.999 and 0.001 quantile, where the first one is considered as the high, and the second is the low boundary. Everything above 0,999 and below 0.001 is considered as an outlier. We removed them for both recency and frequency. After that we checked dataframe by describe and concluded that everything become normal. Supervised learning The time for prediction came. We divided our dataframe into train and test and used KNN, Decision Tree Classifier and Random Forest, Logistic Regression for further predictions. We decided to investigate the accuracy from 1 to 20 with step 2 for each neighbor in train and test. And built the plot. The best result is accuracy 58 for 19 neighbors. Decision Tree gave us 54 for test set and Random Forest’s accuracy was 64. We investigated feature importance for both of them and noticed that monetary had the most influence on predicting the data. For Grid Search we manually set the hyper parameters and for cross validation equals to four folds. Best estimater for random forest classifier for grid search was found. After that good estimaters were chosen for random forest, and the same accuracy occurred. Best accuracy for random forest with default hyper parameters. We built confusion matrix and calculated recall, precision and f-1 score. Also we decided to build lofistic regression but the accuracy was too small, that’s why we build roc-auc and precision-recall curve. Conclusion All the models showed that taken data was not enough and actually not the best for gender prediction. Actions for increase the accuracy were done, such as adding more features, removing outliers. According to this investigation the best choice was random forest.
riccardobl / Jme3 Bullet VhacdThis is a library that uses java bindings for Khaled Mamou's V-HACD to decompose concave meshes into hull-shapes in jmonkey engine.
