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NEER: An Unsupervised Method for Named Entity Evolution Recognition (Beginner Level) Nina N. Tahmasebi, Thomas Risse L3S Research Center Hannover, Germany [email protected]

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This presentation on Named Entity Evolution Recognition is part of the ARCOMEM training curriculum. Feel free to roam around or contact us on Twitter via @arcomem to learn more about ARCOMEM training on archiving Social Media.

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Page 1: Arcomem training neer_beginner

NEER: An Unsupervised Method for Named Entity Evolution Recognition

(Beginner Level)

Nina N. Tahmasebi, Thomas Risse

L3S Research Center

Hannover, Germany

[email protected]

Page 2: Arcomem training neer_beginner

Change Period

Named Entity Evolution

Named Entities (NE): people, places, companies...

Characteristics of Named Entity Evolution (NEE)

Same thing but different terms over time

Change occurs over short periods of time

Small or no concept shift

Announced to the public repeatedly

Goal: Find method for named entity evolution recognition independent from external knowledge sources

Slide 2

Joseph Ratzinger Pope Benedict

Pope Benedict XVIBenedict XVI

Joseph Aloisius RatzingerCardinal RatzingerCardinal Joseph Ratzinger

Page 3: Arcomem training neer_beginner

Named Entity Evolution Recognizer (NEER)

Slide 3

FilteringFinding

Temporal Co-references

Co-References

Benedict XVIà Joseph Ratzingerà Cardinal Ratzinger

1. Pope Benedict XVI2. Pope Benedict3. Benedict XVI4. Cardinal Ratzinger5. Pope6. Benedict

Identifying Change Periods(Burst Detection)

Extract Text NLP Processing Context Creation

In his latest address to American bishops visiting Rome, Pope Benedict XVI stressed that Catholic educators should remain true to the faith -- a reminder issued just in time for another tense season of commencement addresses. No, the pope did not mention Georgetown University by name when discussing the Catholic campus culture wars.

In his latest address to American bishops visiting Rome, Pope Benedict XVI stressed that Catholic educators should remain true to the faith -- a reminder issued just in time for another tense season of commencement addresses. No, the pope did not mention Georgetown University by name when discussing the Catholic campus culture wars.

In his latest address to American bishops visiting Rome, Pope Benedict XVI stressed that Catholic educators should remain true to the faith -- a reminder issued just in time for another tense season of commencement addresses. No, the pope did not mention Georgetown University by name when discussing the Catholic campus culture wars.

In his latest address to American bishops visiting Rome, Pope Benedict XVI stressed that Catholic educators should remain true to the faith -- a reminder issued just in time for another tense season of commencement addr-esses. No, the pope did not mention Georgetown University by name when discussing the Catholic campus culture wars.

In his latest address to American bishops visiting Rome, Pope Benedict XVI stressed that Catholic educators should remain true to the faith -- a reminder issued just in time for another tense season of commencement addr-esses. No, the pope did not mention Georgetown University by name when discussing the Catholic campus culture wars.

In his latest address to American bishops visiting Rome, Pope Benedict XVI stressed that Catholic educators should remain true to the faith -- a reminder issued just in time for another tense season of commencement addr-esses. No, the pope did not mention Georgetown University by name when discussing the Catholic campus culture wars.

Barack ObamaSenatorState Senator Barack ObamaSenator-elect Barack ObamaSenator Barack ObamaIllinois Democrat

Vladimir PutinPresident-elect Vladimir V PutinMinister Vladimir PutinActing President Vladimir V PutinPresident Vladimir V Putin

Processing Chain

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fokas Demonstrator - results

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THANK YOUCONTACT DETAILS

Dr. Thomas Risse+49 511 762 17764

[email protected]