Sökning: "obalanserade data"

Visar resultat 21 - 25 av 29 uppsatser innehållade orden obalanserade data.

1. 21. Planning for Viable Forests with High Biodiversity

   Kandidat-uppsats, Lunds universitet/Miljövetenskaplig utbildning

   Författare :Anja Herdesang; [2018]
   Nyckelord :Anja Herdesang; Planning for Viable Forests with High Biodiversity; forestry; foresters; forester; biodiversity; ecosystem; forest; sustainability; extinction; speices; refinement; nature; clear-cut; cuts; monocultured; forests; alternative; concervation; enviromental laws; even-aged; continuous; silvicultural; wood products; cost-effectiveness; Protection; timber; pulp; production; forest owners; harvesting; red-listed; violations; protected; effective management; ecosystem responses; disturbance; Cross-disciplinary cooperation; climax and carrying capacity; index; describing the abiotic basic Prerequisites for Biodiversity APB ; guideline; trees connected; wildlife connectivity; continuity; Earth and Environmental Sciences; Agriculture and Food Sciences; Biology and Life Sciences; Cultural Sciences; Law and Political Science;

   Sammanfattning : In recent decades, the rate of extinction of species is increasing due to human use and refinement of nature. This has resulted in a large amount of research throughout the world. Forestry today is mostly based on clear cuts, and many natural forests have been cut down and replaced with monocultured forests. LÄS MER

3. 22. Detection and Classification of Anomalies in Road Traffic using Spark Streaming

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Nathan Adolfo Consuegra Rengifo; [2018]
   Nyckelord :anomaly detection; traffic flow; accidents; weather; decision tree; random forest; logistic regression; streaming.; anomalitetsdetektering; trafikflöde; olyckor; väder; beslutsträd; slumpmässig skog; logistisk regression; streaming.;

   Sammanfattning : Road traffic control has been around for a long time to guarantee the safety of vehicles and pedestrians. However, anomalies such as accidents or natural disasters cannot be avoided. Therefore, it is important to be prepared as soon as possible to prevent a higher number of human losses. LÄS MER

4. 23. 3D Shape Detection for Augmented Reality

   Uppsats för yrkesexamina på avancerad nivå, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Hector Anadon Leon; [2018]
   Nyckelord :3D Machine Learning; object detection; computer vision; shape; point cloud;

   Sammanfattning : In previous work, 2D object recognition has shown exceptional results. However, it is not possible to sense the environment spatial information, where the objects are and what they are. LÄS MER

5. 24. Attitydanalys av svenska produktomdömen – behövs språkspecifika verktyg?

   Kandidat-uppsats, Stockholms universitet/Institutionen för lingvistik

   Författare :Oliver Glant; [2018]
   Nyckelord :Computational linguistics; machine translation; neural network; product review; sentiment analysis; Attitydanalys; datorlingvistik; maskinöversättning; neuronnät; produktomdömen;

   Sammanfattning : Sentiment analysis of Swedish data is often performed using English tools and machine. This thesis compares using a neural network trained on Swedish data with a corresponding one trained on English data. LÄS MER

7. 25. A Comparison of Resampling Techniques to Handle the Class Imbalance Problem in Machine Learning : Conversion prediction of Spotify Users - A Case Study

   Kandidat-uppsats, KTH/Skolan för datavetenskap och kommunikation (CSC)

   Författare :Michelle Jagelid; Maria Movin; [2017]
   Nyckelord :;

   Sammanfattning : Spotify uses a freemium business model, meaning that it has two main products, one free limited and one premium for paying customers. In this study we investigated machine learning models’ abilities, given user activity data, to predict conversion from free to premium. LÄS MER