User:TChen

About Me

Hello! I'm Theresa Chen, student at Carleton College, class of '22. I am a double major in environmental studies and computer science.

Work Log

Week 1

Working part-time due to still being in school
Tuesday 6/1

• Attend REU orientation
• Attend mini data science boot camp

Wednesday 6/2

• Continue mini data science boot camp

Thursday 6/3

• Attend Good Research Practices Talk by Dr. Brylow

Week 2

Tuesday 6/8

• Meet with Dr. Puri, discuss overall research goals
• Begin literature review

Wednesday 6/9

• Responsible Conduct of Research (RCR) training
• Attend REU event on technical writing

Thursday 6/10

• Continue lit review
• Familiarize self with different ICESAT-2 data products
• Watch some tutorials from ICESAT-2 hackweek

Friday 6/11

• Lit review- looking at articles related to areas of interest in the arctic
• Meet with Dr. Puri
• Narrow down interest to ATL03 files, start pre-processing data

Week 3

Monday 6/14

• Continue lit review
• Explore captoolkit, used to process ATL06 open altimetry data
• Try to reduce HDF5 file to only variables selected for project

Tuesday 6/15

• Visualize raw photon height data from selected study area in the arctic
• Experiment with data visualizations
• Review past paper from old REU participant Erin Doyle
• Meet with Dr. Puri, decide to expand variable selection

Wednesday 6/16

• Working on processing HDF5 to csv
• Went to REU Professional Event
• Created REU Wiki pages

Thursday 6/17

• Double checking data sets by visualizing photon heights to see if elevation makes sense
• Obtaining datasets for several areas near the arctic circle
• Beginning machine learning tutorials using "keras" package

Friday 6/18

• Working on creating neural network
• Mostly debugging tensorflow installation
• Experimenting with hyperparameters like epochs and batch size to reduce loss and increase accuracy

Week 4

Monday 6/21

• Predicted results from NN still have very low accuracy, still trying to fix

Tuesday 6/22

• Fixing uneven output types for NN model
• Fixing low accuracy for NN model
• Met with Satish to discuss expectations for the coming week

Wednesday 6/23

• Finally got working results for NN model
• Working to visualize and compare results for height prediction
• Learning how to use geopandas and geoplot

Thursday 6/24

• Debugging geoplot, issues with conda installation
• Working on data visualizations
• Started using cartopy

Friday 6/25

• Lit review on lead classification
• Finalized some data visualizations

Week 5

Monday 6/28

• Attended RCR on presentations
• Worked on slides for presentation on Wednesday
• Read a paper on calculating sea ice thickness from ATL10 freeboard estimates

Tuesday 6/29

• Read a paper on lead classification
• Met with Satish to discuss verification of results
• Practiced for Wednesday presentation

Wednesday 6/30

• Attended research presentations and gave presentation in the morning
• Compared results to OpenAltimetry results
• Read up on CRYOSAT and Sentinel-1

Thursday 7/1

• Read up on ATL10 Freeboard algorithm
• Looked at alternative machine learning classification techniques for lead detection

Friday 7/2

• Continued researching lead detection
• Set up Marquette VPN so that larger area in arctic circle could be analyzed
• Read literature on features and areas of interest in Arctic Circle

Week 6

Monday 7/5

• Lit review of CRYOSAT-2 lead detection algorithms
• Review of decision trees

Tuesday 7/6

• Attended training on ethical computing
• Code reorganization so that it will be scalable to multiple HDF5 files
• Meeting with Satish to discuss building a lead classifier

Wednesday 7/7

• Attended training on making research posters
• Started coding neural network for classification

Thursday 7/8

• Encountering difficulties with classification due to photon aggregation
• Reading up on how much granularity is possible

Friday 7/9

• Working on processing ATL07 files
• Exploring different types of classifiers

Week 7

Monday 7/12

• Fixing data issue with ATL07
• Familiarizing self with Beaufort sea area

Tuesday 7/13

• Met with Satish to discuss data issue within ATL07 and ATL03
• Read up on CNN
• Read up on Gaussian Width calculations

Wednesday 7/14

• Recalculating Gaussian Width is not possible
• Attended RCR training in the morning

Thursday 7/15

• Using icepyx API to download Beaufort sea coordinates

Friday 7/16

• Looking at time series analyses as a way to analyze data
• Trying to map out four year time series of Beaufort Sea

Week 8

Monday 7/19

• Continuing to struggle with icepyx (doesn't accept multipolygon shapefiles?)
• Continuing to struggle with data wrangling in order to directly compare ATL07 and ATL03
• Trying to fix data issue, not succeeding, is there any way to count photons in segment?

Tuesday 7/20

• Finally imported data set to remote server!

Wednesday 7/22

• Read paper on applying persistent homology as an analytical approach to data

Thursday 7/23

• Kriging interpolation

Friday 7/24

• Reconstructing ATL07 classifier

Week 9

Monday 7/26

• Still working on Kriging interpolation
• Encountering difficulty in aligning metrics between ATL03 and ATL07

Tuesday 7/27

• Met with Satish to discuss upcoming plan for the week
• Looked into LSTM for time-series predictions
• Successfully replicated ATL07 classification with 97% accuracy (but at the same granularity as the ATL07 data)

Wednesday 7/28

• Mainly reading LSTM papers

Thursday 7/29

• Returned to Kriging vs learning comparison

Friday 7/30

• Worked on visualizations for final poster
• Am still having problem with Kriging grid!!! WHY?

Week 10

Monday 8/02

• Working on poster for symposium
• Still trying to get Kriging to work
• Attended RCR in morning

Tuesday 8/03'

• Finished poster, working on presentation slides
• Gave up on Kriging for now, producing grid for BF Sea area

Wednesday 8/04'

• Finished presentation slides, working on manuscript

Thursday 8/05'

• Attended presentation meeting in the morning
• Attended symposium and presented poster
• Worked on manuscript

Friday 8/06'

• Presented project
• Turned in manuscript
• Have plans to make Kriging work for me!