Research Notes
Short, source-backed notes about retrospective chart similarity and Deja-view methodology.
Why Deja-view uses retrospective similarity, not forecasts
Similar charts are not future signals. They show how differently comparable historical windows ended.
Last updated: 2026-06-14
Read Korean noteHow adjusted close changes chart similarity
Deja-view uses adjusted close to reduce false cliffs caused by splits and dividends.
Last updated: 2026-06-14
Read Korean noteWhat Top 10 similar windows can and cannot support
The Top 10 table is small and retrospective. It is useful for range and divergence, not probability forecasts.
Last updated: 2026-06-14
Read Korean noteWhy survivorship bias matters in stock-chart memory
A corpus centered on surviving instruments can underrepresent bad endings from delisted names.
Last updated: 2026-06-14
Read Korean noteHow to cite a Deja-view stock page responsibly
Responsible citation should include the as-of date, source basis, method, and the non-advice limitation.
Last updated: 2026-06-14
Read Korean notePage Information
Frequently Asked Questions
Is deja-view investment advice?
No. Deja-view is a retrospective comparison tool for historical price patterns. It does not provide buy/sell signals, return guarantees, or investment advice.
How often are pages updated?
Static explanation pages are updated when their content changes. Data-backed stock pages and hubs show the generation timestamp from the data artifact.
Who writes and maintains this site?
Deja-view is created and maintained by Baek Kyoungjung (BK). The About page links to public Medium and LinkedIn profiles for author verification.