Weekly Update for September 17

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# Weekly Update for September 17
### 2018/09/17

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# About Slides

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# New CSAFE slide template

We're now using [`xaringan`](https://github.com/yihui/xaringan)

What's changed:

- New person slide:

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# Your Name
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- New content slide with title:

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- New content slide without title:

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Slide content with no title on slide
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# Sample User

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# Sample Slide

- Sample Table. Sam Tyner talked about the three must-haves of your summary:

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- If you are going to add an image, **create a directory** with your name within "images" folder. For example, "images/**guillermo**/sample_image.JPG"

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# Amy

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# Fall Semester Goals

- **Data Collection** Application is in 'IRB Staff Review' phase.
- Expand Bayesian hierarchical model
 - **Formal Model Selection** Deviance Information Criterion (DIC)
 - Tests and Intervals
 - Validation
- Write and submit a paper on that modeling.
- Exploratory analysis of 'next level' features (AAFS in February)
 - Work with Ben and Nick
 
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## IRB Manager - *"One form to rule them all"*

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# DIC
**Context:** Formal model selection with DIC. How many grapheme types to use in modeling?

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# DIC  
**Content:**

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# DIC  
**Conclusion:**

- Work with IT to update server
- Other model selection techniques. 
    - Compositional data. 
    - Borrow from topic modeling literature?

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# Ben

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# Progress!
<img src = "images/ben/corrections.png" width="85%"/>
- Checks binary image for predefined patterns.
- Outputs coordinates for corrections, marked by dots.
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<img src = "images/ben/pp1.png" width="35%"/>
<img src = "images/ben/pp2.png" width="35%"/>
- F. W. M. Stentiford and R. G. Mortimer, "Some new heuristics for thinning binary handprinted characters for OCR," in IEEE Transactions on Systems, Man, and Cybernetics, vol. SMC-13, no. 1, pp. 81-84, Jan.-Feb. 1983.
doi: 10.1109/TSMC.1983.6313034
- Checks for a variety of masks
- Documentation on my branch (ben)

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# Nick

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### Node Count Extraction

![](images/Nick/CSAFE_nodes.png)

Node Counts: 4, 4, 4, 4, 6, 4

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### Something is strange with the 2 node count -- Need to look at it

![](images/Nick/NodeCountComparison.png)

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### Something is strange with the 2 node count -- Need to look at

![](images/Nick/2graphemeEx.png)

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# Nate

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# Fall Semester Goals
- Verify theoretical basis for current SLR goals and begin experiments on simulated data 
- Finish groove changepoint detection algorithm version 2 and test on all available data
- Write paper with Kiegan on groove results

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# Ganesh

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- Got Comments back from the Reviewers for the first revision, some more minor changes in formatting and language.
  - Fixed most issues and almost ready to send back the responses, pondering on some weird points.

- Implementing the diagnostics UI (shiny app) on a sample bullet database
  - almost there!

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# Sam

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# Book progress

- Confirmed book contributors: 
  - Amanda Luby (human factors)
  - Chris Galbraith (digital)
  - Karen Pan (fingerprint, glass (?))
  - Eric Hare (bullets)
  - Xiao Hui (casings, digital)
  - Nick Berry (handwriting)
  - Soyoung Park (glass, shoes)
  - Peter Vallone, Sarah Riman (DNA)
  
- Chapter Outline: 
  - Intro. to problem
  - Data collection and cleaning
  - R Packages available & key functions
  - Drawing conclusions (LR?, SLR?, etc.)
  - Case Study 
  
Other: glossary, hierarchy of propositions, LR chapter?

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# Practitioner survey

![](images/sam/subj_ratings.png)

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# Practitioner survey

![](images/sam/formats.png)

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# EDA glass paper

![](images/sam/difference_dists.png)

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# Guillermo

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# Plans for this Fall

- Complete adaptation of registration of 3D scans in R and perform analysis

- Complete shiny app for 2D outsole scans registration

- Write paper of the database which must include some data analysis

- Write paper on speaker recognition (w/Vianey Leos)

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# James

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# This Fall

* Steady Progress 
  + 27 Pairs left to 3D Scan
  
* Will be Using the Gilman Lab for all "four" Prints

* Mud prints may be taken in Durham due to the 3D Scanner

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# Kiegan

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# Fall Semester Goals

- **Submit to AFTE journal** - Finishing up edits this week.    
- **Complete writing of Chapman & Hall book**    
    - Finishing Chapter 3 draft *this week*   
- "Bake-off" of get_grooves methods coming soon.  
- Ran into an issue with robust LOESS on Houston set  
    - Reworking functions to iterate how we want.

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# Locfit.robust updates  
![](images/kiegan/locfit.robust-hamby-houston.png)

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# Locfit.robust updates  
![](images/kiegan/locfit.robust-vs-new-houston.png)

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# Locfit.robust updates  
![](images/kiegan/bad-new-function.png)

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# Danica

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# Update

- Submit draft BF vs. LR paper to AOS ->  should be done this week!  
    - Write a follow-up paper to LPR  ->  have a nice draft
- Continue NIJ grant to validate FDE conclusions
    - Started work on the second phase
    - Trying to determine a good way to combine kinematic measures
- Working on my Top 10 lists
    - Things statisticians should know before working in forensics -> have a nice draft
    - Things forensic practioners should know before working with statistics -> have a rough draft

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# Miranda

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# Neural Networks

- Continue quality control on labeled images
    - Go through annotations to verify *all* shapes in a given polygon are labeled
- Implement image augmentation (in particular, stretching) to prevent over-fitting of specific shapes
    - Regular polygons are identified with high accuracy, but elongated polygons are not
    - Very close to being implemented!

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# Heike

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# Scans

- Hamby set 36 scans done, analysis done, results are a bit strange

- Hamby clone set 224 scans done

- Hamby set 224 scans done

- Hamby set 10 arrived from St Louis, in scanning process.

- several other sets of bullets and cartridge cases

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# Hamby 224 - Clone

- Hamby 224 Clone

- organized as test set: two known bullets from the same barrel are paired with an unknown
    
    - total of fifteen test sets (one for each unknown): some clones have replicates

![:scale 40%](images/heike/set1.png) ![:scale 40%](images/heike/set2.png)

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# Hamby 224 - Clone and Original

Which barrel in the original is Test Set barrel X?

Test set 1 (Clone 224) versus Barrel 1 (Set 224)
![:scale 60%](images/heike/ts1-br1.png)

Still todo: Matching individual clones and their respective bullets

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# Scans

Original
![](images/heike/H224set-br1-B1-L1.png)

Clone
![](images/heike/H224clone-TS11-Br11-B2-L3.png)

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# Hamby 224 - Clone and Original
Test set 11 (Clone 224) versus Barrel 1 (Set 224)
![:scale 60%](images/heike/clone-br1.png)

Set 224: Bullet 1 - Bullet 2: 0.98

Set/Clone 224: Bullet 1: 0.97

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# Strange scan

Scan of original and corresponding clone - middle part of clone does not show any striae

![:scale 80%](images/heike/br1-b2-l2.png)

![:scale 80%](images/heike/ts11-b1-l2.png)

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# Programming

- bulletxtrctr re-factoring ~~close to~~ done

- starting on comparisons of before/after feature values

- [x3ptools](https://heike.github.io/x3ptools/) and 
[bulletxtrctr](https://heike.github.io/bulletxtrctr/)

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[Issues!!](https://github.com/CSAFE-ISU/slides/issues)

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# Soyoung

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# Fall semester plans: 
 - Shoes
    + Wrap up shoe analysis using edges and SURF 
    + Compare the performance with other methods such as phase only correlations, Fourier-Mellin transformation correlation
    + Do analysis with CSAFE shoe data
    + Submit papers regarding shoe analysis soon!
   
- Research on "uncertainty pyramid" with Steve and Hari at NIST   
 - Glass analysis with Sam
    + Exploratory analysis 
    + Various covariance estimations
    + Submit papers!
   
- Working on book chapters of glass and shoes funded by ROpenSci Fellowship

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# Analysis result with CSAFE shoe data 
 - All nike shoes with size of 8.5 and 10.5 at time 4 (6 months)
- KM (716) : Between replicates
- KNM (599) : Between shoe IDs
- Edge matching with three circles
 <img src="images/soyoung/nike_6plots.png" width="80%">

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# Susan

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# Bullets

- Hamby 44 analysis
    - Goal is to compare Hamby 36 to Hamby 44
    - Hopefully will be finished later today