Projects

Exhibit NO. 001
Headersort

Sort Gmail without reading message bodies.
Headersort
Exhibit NO. 001

Sort Gmail without reading message bodies.

Sender and subject become labels and a board of mail to review. Bill Bench classifies bills rather than mail.

The demo sorts 60 fictional emails across seven days.

Explore project Source
From email headers to a sorted queuePublished demo data
- billing@utility.example
  Invoice 88213 due in 5 days
  Finance
- pm@studio.example
  Design review — Thursday 14:00
  Work
- deals@shop.example
  70% off everything — 48 hours only
  Promotions
Sender and subject only. All addresses are fictional.
Exhibit NO. 002
Scholar Outflow Lab

Compare where researchers move and remain.

Scholar Outflow Lab
Exhibit NO. 002

Compare where researchers move and remain.

Follow published affiliation histories across 13 origin countries. For comparison over quarters rather than countries, CallDelta separates management remarks from analyst questions.

1.43 million sampled authors, with sample sizes shown alongside rates.

Explore project Source

Where the last known affiliation isPublished aggregate data

Origin: mainland China · destination tenure ≥ 4 years

DestinationBothOriginElsewhere

United Statesn = 8,610

19.1%17.6%59.4%3.8%

United Kingdomn = 1,216

16.0%13.6%62.7%7.6%

Canadan = 1,030

14.0%11.5%67.0%7.6%

Arrived by 2021; five-year observation window. Last known affiliation, not citizenship or immigration status.
SELECT pr.prod_name AS "Product Name", pr.unit_price AS "Unit Price ($)" FROM product pr ORDER BY pr.unit_price ASC

Resistance Bands14.99
Cookbook19.99
Published demo data
Exhibit NO. 003
Query Mirror

Learn SQL by seeing the query behind each click.
Query Mirror
Exhibit NO. 003

Learn SQL by seeing the query behind each click.

Students build queries visually, then practise against an expected result. For another education tool, Letterkeep helps professors manage recommendation eligibility rather than teach queries.

Four synthetic datasets; correct results pass even when the SQL differs.

Explore project Source
Choose a filter. See the SQL change.Published demo data
SELECT pr.prod_name AS "Product Name", pr.unit_price AS "Unit Price ($)" FROM product pr ORDER BY pr.unit_price ASC

11 matching rows

Product Price
Resistance Bands 14.99
Cookbook 19.99
Desk Lamp 24.99
SELECT pr.prod_name AS "Product Name", pr.unit_price AS "Unit Price ($)" FROM product pr WHERE pr.unit_price<=50 ORDER BY pr.unit_price ASC

6 matching rows

Product Price
Resistance Bands 14.99
Cookbook 19.99
Desk Lamp 24.99
First three matching rows from the synthetic product table.
Exhibit NO. 004
Letterkeep

Students check their eligibility before they ask.
Letterkeep
Exhibit NO. 004

Students check their eligibility before they ask.

Rosters, grades and files stay on the professor’s own machine. For tracking job applications, see ApplyLedger; for a classroom learning tool rather than course administration, see Query Mirror.

The demo has 15 fictional students in two courses; three already eligible.

Explore project Source
Three conditions, one clear answerPublished demo data
On the rosterDEMO 310
Grade88.5% ≥ 80%
Attendance in every enrolment98% ≥ 75%

Eligible
On the rosterDEMO 310
Grade85% ≥ 80%
Attendance in every enrolment70% < 75%

Not eligible
Computed by the product’s eligibility rules against its synthetic roster.
Exhibit NO. 005
CallDelta

Read the tone gap in earnings calls.

CallDelta
Exhibit NO. 005

Read the tone gap in earnings calls.

For earnings-call research: management remarks and analyst Q&A, scored separately across quarters. For a different research comparison, Scholar Outflow Lab follows researchers’ affiliations rather than earnings-call tone.

30/30 synthetic passages tagged as expected in the recorded evaluation.

Explore project Source

Management vs. analyst Q&A Fictional sample · 8 quarters

Northwind Semiconductor

Management Analyst Q&A

Q1 26 · tone gap0.27

Management stays more positive than the Q&A.

View the values

Quarter Management Analyst Q&A

Q2 24 0.74 0.52
Q3 24 0.78 0.58
Q4 24 0.71 0.49
Q1 25 0.69 0.45
Q2 25 0.72 0.48
Q3 25 0.68 0.41
Q4 25 0.66 0.38
Q1 26 0.62 0.35

Synthetic data from the product’s sample file. Not a trading signal.
Exhibit NO. 006
Bill Bench

Turn messy bills into a month-end workbook.

Bill Bench
Exhibit NO. 006

Turn messy bills into a month-end workbook.

For month-end review: three inconsistent exports become five sheets, with every row traceable. For a similar classification workflow with email instead of bills, see Headersort.

125 sample rows accounted for: 114 retained, 3 duplicates, 8 incomplete.

Explore project Source

Raw export to categorised billsSynthetic sample · seed 42

Source export
CAD

DEMO UTILITY 02A:6 $1,453.94
demo software 03 A:7 1182.26
Demo-Lease-04A:8 CAD 549.36

Normalise · categorise · trace

Categorised bills
CAD

Demo Utility 02Utilities 1,453.94
Demo Software 03Software 1,182.26
Demo Lease 04Rent 549.36

3 of 125 sample rows · A:6–8 in the source workbook.
Exhibit NO. 007
Clipbind

Turn saved posts into a source-linked article.

Clipbind
Exhibit NO. 007

Turn saved posts into a source-linked article.

Collect Xiaohongshu posts and Bilibili videos in one reading library. For reusable workflows that check creative output, see Agent Skills.

Each section of a compilation links back to its source posts.

Explore project Source

Saved notes → one reading viewRecorded demo output

Source note 1
Kitsilano Weekend Brunch (Vancouver)
Five brunch spots worth the wait, ranked by value: 1. Sourdough pancakes at the corner bakery — arrive before 9:30 am or expect a 40-minute wait. 2. The shakshuka place on 4th Avenue — ask for extra bread; the sauce is worth it. 3. The best flat white is not at the much-posted café but at the spot by the beach. 4. Skip the big-chain brunch on weekends — over an hour of waiting for the same eggs you'd get elsewhere. 5. A cash-only dumpling spot serves an under-the-radar savoury breakfast set that few people mention.

An excerpt from the stored generation, with its source note.
Exhibit NO. 008
ApplyLedger

Track job applications across countries.

ApplyLedger
Exhibit NO. 008

Track job applications across countries.

Separate regional pipelines share a profile, resume library and glossary. For the recommendation-request side of applications, see Letterkeep.

Each job can generate prompts for a tailored resume and cover letter.

Explore project Source

One pipeline per regionPublished demo data

Interested
Northwind Analytics
Data Analyst
Vancouver, BC
Applied
Fathom Robotics
Junior Software Engineer
Toronto, ON (hybrid)
Interviewing
Cascade Health
Business Intelligence Analyst
Burnaby, BC

Three sample applications from each regional pipeline. Companies are fictional.
Exhibit NO. 009
Agent Skills

Give coding agents reusable creation and verification workflows.

Agent Skills
Exhibit NO. 009

Give coding agents reusable creation and verification workflows.

Skills for Claude Code, also tested in Codex, with scripts and worked examples. For source-linked article compilation from saved posts, see Clipbind.

Every script ships a self-test; READMEs identify intentional break checks.

Explore project Source

One formula becomes an interactive pagenk-explorer

Chance of at least one success
65.1%
1 − (1 − 10 ÷ 100)¹⁰ = 0.651322
Number of tries10
Each try has a 10% chance, independent of every other try. A mathematical example from nk-explorer.

Projects

Headersort

Sort Gmail without reading message bodies.

Scholar Outflow Lab

Compare where researchers move and remain.

Query Mirror

Learn SQL by seeing the query behind each click.

Letterkeep

Students check their eligibility before they ask.

CallDelta

Read the tone gap in earnings calls.

Bill Bench

Turn messy bills into a month-end workbook.

Source export

Categorised bills

Clipbind

Turn saved posts into a source-linked article.

Kitsilano Weekend Brunch (Vancouver)

Kyoto in 3 Days: Temples Early, Everything Else Later

Buying Your First Mechanical Keyboard: What Actually Matters

ApplyLedger

Track job applications across countries.

Data Analyst

Junior Software Engineer

Business Intelligence Analyst

Junior Data Scientist

Data Analyst

Analytics Engineer

Data Analyst

Insight Analyst

Reporting Analyst

Agent Skills

Give coding agents reusable creation and verification workflows.

Product	Price
Resistance Bands	14.99
Cookbook	19.99
Desk Lamp	24.99

Product	Price
Resistance Bands	14.99
Cookbook	19.99
Desk Lamp	24.99

Quarter	Management	Analyst Q&A
Q2 24	0.74	0.52
Q3 24	0.78	0.58
Q4 24	0.71	0.49
Q1 25	0.69	0.45
Q2 25	0.72	0.48
Q3 25	0.68	0.41
Q4 25	0.66	0.38
Q1 26	0.62	0.35

DEMO UTILITY 02A:6	$1,453.94
demo software 03 A:7	1182.26
Demo-Lease-04A:8	CAD 549.36