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Fairness and Privacy in
AI/ML Systems
Krishnaram Kenthapadi
AI @ LinkedIn
@Scale’19 & Pinterest Distinguished Lecture
Octo...
Massachusetts Group
Insurance Commission
(1997): Anonymized
medical history of state
employees
William Weld vs
Latanya Swe...
Uniquely identifiable with ZIP
+ birth date + gender (in the
US population)
Golle, “Revisiting the Uniqueness of Simple De...
The Coded Gaze [Joy Buolamwini 2016]
Face detection software: Fails for some darker faces
• Facial analysis software:
Higher accuracy for light
skinned men
• Error rates for dark
skinned women: 20% -
34%
Gender S...
• Ethical challenges posed
by AI systems
• Inherent biases present
in society
• Reflected in training
data
• AI/ML models ...
Laws against Discrimination
Immigration Reform and Control Act
Citizenship
Rehabilitation Act of 1973;
Americans with Disa...
Fairness Privacy
Transparency Explainability
Fairness
and Privacy
by Design”
for AI
products
“
AI @ LinkedIn
Case Studies @ LinkedIn
Fairness
Privacy
Reflections
LinkedIn operates the largest professional
network on the Internet
Tell your
story
645M+ members
30M+
companies are
repres...
How AI is transforming LinkedIn’s
ecosystem
2 PB+
Data processed nearline
and offline per day
25 B+
Parameters in Machine
...
Fairness in
AI @
LinkedIn
Fairness-aware Talent
Search Ranking
Guiding Principle:
“Diversity by Design”
Insights to
Identify Diverse
Talent Pools
Representative
Talent Search
Results
Diversity
Learning
Curriculum
“Diversity by...
Plan for Diversity
Plan for Diversity
Identify Diverse Talent Pools
Inclusive Job Descriptions / Recruiter Outreach
Representative Ranking for Talent Search
S. C. Geyik, S. Ambler,
K. Kenthapadi, Fairness-
Aware Ranking in Search &
Recomm...
Intuition for Measuring and Achieving Representativeness
Ideal: Top ranked results should follow a desired distribution on...
Desired Proportions within the Attribute of Interest
Compute the proportions of the values of the attribute (e.g., gender,...
Measuring (Lack of) Representativeness
Skew@k
(Logarithmic) ratio of the proportion of candidates having a given attribute...
Fairness-aware Reranking Algorithm (Simplified)
Partition the set of potential candidates into different
buckets for each ...
Architecture
Validating Our Approach
Gender Representativeness
Over 95% of all searches are representative compared to the qualified
po...
Lessons
learned
• Post-processing approach desirable
• Model agnostic
• Scalable across different model choices
for our ap...
Engineering for Fairness in AI Lifecycle
Problem
Formation
Dataset
Construction
Algorithm
Selection
Training
Process
Testi...
Engineering for Fairness in AI Lifecycle
S.Vasudevan, K. Kenthapadi, FairScale: A Scalable Framework for Measuring Fairnes...
FairScale System Architecture [Vasudevan & Kenthapadi, 2019]
• Flexibility of Use
(Platform agnostic)
• Ad-hoc exploratory...
Fairness-aware Experimentation
[Saint-Jacques & Sepehri, KDD’19 Social Impact Workshop]
Imagine LinkedIn has 10 members.
E...
Acknowledgements
LinkedIn Talent Solutions Diversity team, Hire & Careers AI team, Anti-abuse AI team, Data Science
Applie...
Privacy in
AI @
LinkedIn
PriPeARL: Framework to
compute robust,
privacy-preserving
analytics
Privacy challenges /
design f...
Analytics & Reporting Products at LinkedIn
Profile View
Analytics
35
Content
Analytics
Ad Campaign
Analytics
All showing
d...
Admit only a small # of predetermined query types
Querying for the number of member actions, for a specified time period,
...
Admit only a small # of predetermined query types
Querying for the number of member actions, for a specified time period,
...
Privacy Requirements
Attacker cannot infer whether a member performed an action
E.g., click on an article or an ad
Attacke...
Possible Privacy Attacks
39
Targeting:
Senior directors in US, who studied at Cornell
Matches ~16k LinkedIn members
→ over...
Problem Statement
Compute robust, reliable analytics in a privacy-
preserving manner, while addressing the product
needs.
Differential Privacy
Curator
Defining Privacy
Defining Privacy
43
CuratorCurator
+ your data
- your data
Differential Privacy
44
Databases D and D′ are neighbors if they differ in one person’s data.
Differential Privacy: The di...
(ε, 𝛿)-Differential Privacy: The distribution of the curator’s output M(D) on
database D is (nearly) the same as M(D′).
Di...
Differential Privacy: Random Noise Addition
If ℓ1-sensitivity of f : D → ℝn:
maxD,D′ ||f(D) − f(D′)||1 = s,
then adding La...
PriPeARL: A Framework for Privacy-Preserving
Analytics
K. Kenthapadi, T. T. L. Tran, ACM CIKM 2018
47
Pseudo-random noise ...
PriPeARL System Architecture
Lessons Learned from Deployment (> 1
year)
Semantic consistency vs. unbiased, unrounded noise
Suppression of small counts
...
Summary
Framework to compute robust, privacy-preserving analytics
Addressing challenges such as preserving member privacy,...
Acknowledgements
Team:
AI/ML: Krishnaram Kenthapadi, Thanh T. L. Tran
Ad Analytics Product & Engineering: Mark Dietz, Tayl...
LinkedIn Salary
LinkedIn Salary (launched in Nov, 2016)
Data Privacy Challenges
Minimize the risk of inferring any one
individual’s compensation data
Protection against data brea...
Problem Statement
How do we design LinkedIn Salary system taking into
account the unique privacy and security challenges,
...
Title Region
$$
User Exp
Designer
SF Bay
Area
100K
User Exp
Designer
SF Bay
Area
115K
... ...
...
Title Region
$$
User Exp...
System
Architecture
Acknowledgements
Team:
AI/ML: Krishnaram Kenthapadi, Stuart Ambler, Xi Chen, Yiqun Liu, Parul
Jain, Liang Zhang, Ganesh Ve...
Reflections
“Fairness and Privacy by Design” when
building AI products
Collaboration/consensus across key
stakeholders
NYT...
Beyond
Accuracy
Performance and Cost
Fairness and Bias
Transparency and Explainability
Privacy
Security
Safety
Robustness
Fairness, Explainability &
Privacy: Opportunities
Fairness in ML
Application specific challenges
Conversational AI systems: Unique bias/fairness/ethics considerations
E.g.,...
Explainability in ML
Actionable explanations
Balance between explanations & model secrecy
Robustness of explanations to fa...
Privacy in ML
Privacy-preserving model training, robust against adversarial
membership inference attacks
Privacy for highl...
Thanks! Questions?
S. C. Geyik, S. Ambler, K. Kenthapadi, Fairness-Aware Ranking in Search &
Recommendation Systems with A...
Fairness and Privacy in AI/ML Systems
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Fairness and Privacy in AI/ML Systems

How do we protect privacy of users when building large-scale AI based systems? How do we develop machine learned models and systems taking fairness, accountability, and transparency into account? With the ongoing explosive growth of AI/ML models and systems, these are some of the ethical, legal, and technical challenges encountered by researchers and practitioners alike. In this talk, we will first motivate the need for adopting a "fairness and privacy by design" approach when developing AI/ML models and systems for different consumer and enterprise applications. We will then focus on the application of fairness-aware machine learning and privacy-preserving data mining techniques in practice, by presenting case studies spanning different LinkedIn applications (such as fairness-aware talent search ranking, privacy-preserving analytics, and LinkedIn Salary privacy & security design), and conclude with the key takeaways and open challenges.

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Fairness and Privacy in AI/ML Systems

  1. 1. Fairness and Privacy in AI/ML Systems Krishnaram Kenthapadi AI @ LinkedIn @Scale’19 & Pinterest Distinguished Lecture October 2019
  2. 2. Massachusetts Group Insurance Commission (1997): Anonymized medical history of state employees William Weld vs Latanya Sweeney Latanya Sweeney (MIT grad student): $20 – Cambridge voter roll born July 31, 1945 resident of 02138
  3. 3. Uniquely identifiable with ZIP + birth date + gender (in the US population) Golle, “Revisiting the Uniqueness of Simple Demographics in the US Population”, WPES 2006
  4. 4. The Coded Gaze [Joy Buolamwini 2016] Face detection software: Fails for some darker faces
  5. 5. • Facial analysis software: Higher accuracy for light skinned men • Error rates for dark skinned women: 20% - 34% Gender Shades [Joy Buolamwini & Timnit Gebru, 2018]
  6. 6. • Ethical challenges posed by AI systems • Inherent biases present in society • Reflected in training data • AI/ML models prone to amplifying such biases Algorithmic Bias
  7. 7. Laws against Discrimination Immigration Reform and Control Act Citizenship Rehabilitation Act of 1973; Americans with Disabilities Act of 1990 Disability status Civil Rights Act of 1964 Race Age Discrimination in Employment Act of 1967 Age Equal Pay Act of 1963; Civil Rights Act of 1964 Sex And more...
  8. 8. Fairness Privacy Transparency Explainability
  9. 9. Fairness and Privacy by Design” for AI products “
  10. 10. AI @ LinkedIn Case Studies @ LinkedIn Fairness Privacy Reflections
  11. 11. LinkedIn operates the largest professional network on the Internet Tell your story 645M+ members 30M+ companies are represented on LinkedIn 90K+ schools listed (high school & college) 35K+ skills listed 20M+ open jobs on LinkedIn Jobs 280B Feed updates
  12. 12. How AI is transforming LinkedIn’s ecosystem 2 PB+ Data processed nearline and offline per day 25 B+ Parameters in Machine Learning models 200+ Machine Learning A/B experiments per week Contributors Advertising Revenue Confirmed Hires
  13. 13. Fairness in AI @ LinkedIn Fairness-aware Talent Search Ranking
  14. 14. Guiding Principle: “Diversity by Design”
  15. 15. Insights to Identify Diverse Talent Pools Representative Talent Search Results Diversity Learning Curriculum “Diversity by Design” in LinkedIn’s Talent Solutions
  16. 16. Plan for Diversity
  17. 17. Plan for Diversity
  18. 18. Identify Diverse Talent Pools
  19. 19. Inclusive Job Descriptions / Recruiter Outreach
  20. 20. Representative Ranking for Talent Search S. C. Geyik, S. Ambler, K. Kenthapadi, Fairness- Aware Ranking in Search & Recommendation Systems with Application to LinkedIn Talent Search, KDD’19. [Microsoft’s AI/ML conference (MLADS’18). Distinguished Contribution Award] Building Representative Talent Search at LinkedIn (LinkedIn engineering blog)
  21. 21. Intuition for Measuring and Achieving Representativeness Ideal: Top ranked results should follow a desired distribution on gender/age/… E.g., same distribution as the underlying talent pool Inspired by “Equal Opportunity” definition [Hardt et al, NIPS’16] Defined measures (skew, divergence) based on this intuition
  22. 22. Desired Proportions within the Attribute of Interest Compute the proportions of the values of the attribute (e.g., gender, gender-age combination) amongst the set of qualified candidates “Qualified candidates” = Set of candidates that match the search query criteria Retrieved by LinkedIn’s Galene search engine Desired proportions could also be obtained based on legal mandate / voluntary commitment
  23. 23. Measuring (Lack of) Representativeness Skew@k (Logarithmic) ratio of the proportion of candidates having a given attribute value among the top k ranked results to the corresponding desired proportion Variants: MinSkew: Minimum over all attribute values MaxSkew: Maximum over all attribute values Normalized Discounted Cumulative Skew Normalized Discounted Cumulative KL-divergence
  24. 24. Fairness-aware Reranking Algorithm (Simplified) Partition the set of potential candidates into different buckets for each attribute value Rank the candidates in each bucket according to the scores assigned by the machine-learned model Merge the ranked lists, balancing the representation requirements and the selection of highest scored candidates Algorithmic variants based on how we choose the next attribute
  25. 25. Architecture
  26. 26. Validating Our Approach Gender Representativeness Over 95% of all searches are representative compared to the qualified population of the search Business Metrics A/B test over LinkedIn Recruiter users for two weeks No significant change in business metrics (e.g., # InMails sent or accepted) Ramped to 100% of LinkedIn Recruiter users worldwide
  27. 27. Lessons learned • Post-processing approach desirable • Model agnostic • Scalable across different model choices for our application • Acts as a “fail-safe” • Robust to application-specific business logic • Easier to incorporate as part of existing systems • Build as a stand-alone service or component for post-processing • No significant modifications to the existing components • Complementary to efforts to reduce bias from training data & during model training
  28. 28. Engineering for Fairness in AI Lifecycle Problem Formation Dataset Construction Algorithm Selection Training Process Testing Process Deployment Feedback Is an algorithm an ethical solution to our problem? Does our data include enough minority samples? Are there missing/biased features? Do we need to apply debiasing algorithms to preprocess our data? Do we need to include fairness constraints in the function? Have we evaluated the model using relevant fairness metrics? Is the model’s effect similar across all users? Are we deploying our model on a population that we did not train/test on? Does the model encourage feedback loops that can produce increasingly unfair outcomes? Credit: K. Browne & J. Draper
  29. 29. Engineering for Fairness in AI Lifecycle S.Vasudevan, K. Kenthapadi, FairScale: A Scalable Framework for Measuring Fairness in AI Applications, 2019
  30. 30. FairScale System Architecture [Vasudevan & Kenthapadi, 2019] • Flexibility of Use (Platform agnostic) • Ad-hoc exploratory analyses • Deployment in offline workflows • Integration with ML Frameworks • Scalability • Diverse fairness metrics • Conventional fairness metrics • Benefit metrics • Statistical tests
  31. 31. Fairness-aware Experimentation [Saint-Jacques & Sepehri, KDD’19 Social Impact Workshop] Imagine LinkedIn has 10 members. Each of them has 1 session a day. A new product increases sessions by +1 session per member on average. Both of these are +1 session / member on average! One is much more unequal than the other. We want to catch that.
  32. 32. Acknowledgements LinkedIn Talent Solutions Diversity team, Hire & Careers AI team, Anti-abuse AI team, Data Science Applied Research team Special thanks to Deepak Agarwal, Parvez Ahammad, Stuart Ambler, Kinjal Basu, Jenelle Bray, Erik Buchanan, Bee-Chung Chen, Fei Chen, Patrick Cheung, Gil Cottle, Cyrus DiCiccio, Patrick Driscoll, Carlos Faham, Nadia Fawaz, Priyanka Gariba, Meg Garlinghouse, Sahin Cem Geyik, Gurwinder Gulati, Rob Hallman, Sara Harrington, Joshua Hartman, Daniel Hewlett, Nicolas Kim, Rachel Kumar, Monica Lewis, Nicole Li, Heloise Logan, Stephen Lynch, Divyakumar Menghani, Varun Mithal, Arashpreet Singh Mor, Tanvi Motwani, Preetam Nandy, Lei Ni, Nitin Panjwani, Igor Perisic, Hema Raghavan, Romer Rosales, Guillaume Saint-Jacques, Badrul Sarwar, Amir Sepehri, Arun Swami, Ram Swaminathan, Grace Tang, Ketan Thakkar, Sriram Vasudevan, Janardhanan Vembunarayanan, James Verbus, Xin Wang, Hinkmond Wong, Ya Xu, Lin Yang, Yang Yang, Chenhui Zhai, Liang Zhang, Yani Zhang
  33. 33. Privacy in AI @ LinkedIn PriPeARL: Framework to compute robust, privacy-preserving analytics Privacy challenges / design for LinkedIn
  34. 34. Analytics & Reporting Products at LinkedIn Profile View Analytics 35 Content Analytics Ad Campaign Analytics All showing demographics of members engaging with the product
  35. 35. Admit only a small # of predetermined query types Querying for the number of member actions, for a specified time period, together with the top demographic breakdowns Analytics & Reporting Products at LinkedIn
  36. 36. Admit only a small # of predetermined query types Querying for the number of member actions, for a specified time period, together with the top demographic breakdowns Analytics & Reporting Products at LinkedIn E.g., Title = “Senior Director” E.g., Clicks on a given ad
  37. 37. Privacy Requirements Attacker cannot infer whether a member performed an action E.g., click on an article or an ad Attacker may use auxiliary knowledge E.g., knowledge of attributes associated with the target member (say, obtained from this member’s LinkedIn profile) E.g., knowledge of all other members that performed similar action (say, by creating fake accounts)
  38. 38. Possible Privacy Attacks 39 Targeting: Senior directors in US, who studied at Cornell Matches ~16k LinkedIn members → over minimum targeting threshold Demographic breakdown: Company = X May match exactly one person → can determine whether the person clicks on the ad or not Require minimum reporting threshold Attacker could create fake profiles! E.g. if threshold is 10, create 9 fake profiles that all click. Rounding mechanism E.g., report incremental of 10 Still amenable to attacks E.g. using incremental counts over time to infer individuals’ actions Need rigorous techniques to preserve member privacy (not reveal exact aggregate counts)
  39. 39. Problem Statement Compute robust, reliable analytics in a privacy- preserving manner, while addressing the product needs.
  40. 40. Differential Privacy
  41. 41. Curator Defining Privacy
  42. 42. Defining Privacy 43 CuratorCurator + your data - your data
  43. 43. Differential Privacy 44 Databases D and D′ are neighbors if they differ in one person’s data. Differential Privacy: The distribution of the curator’s output M(D) on database D is (nearly) the same as M(D′). Curator + your data - your data Dwork, McSherry, Nissim, Smith [TCC 2006] Curator
  44. 44. (ε, 𝛿)-Differential Privacy: The distribution of the curator’s output M(D) on database D is (nearly) the same as M(D′). Differential Privacy 45 Curator Parameter ε quantifies information leakage ∀S: Pr[M(D)∊S] ≤ exp(ε) ∙ Pr[M(D′)∊S]+𝛿.Curator Parameter 𝛿 gives some slack Dwork, Kenthapadi, McSherry, Mironov, Naor [EUROCRYPT 2006] + your data - your data Dwork, McSherry, Nissim, Smith [TCC 2006]
  45. 45. Differential Privacy: Random Noise Addition If ℓ1-sensitivity of f : D → ℝn: maxD,D′ ||f(D) − f(D′)||1 = s, then adding Laplacian noise to true output f(D) + Laplacen(s/ε) offers (ε,0)-differential privacy. Dwork, McSherry, Nissim, Smith [TCC 2006]
  46. 46. PriPeARL: A Framework for Privacy-Preserving Analytics K. Kenthapadi, T. T. L. Tran, ACM CIKM 2018 47 Pseudo-random noise generation, inspired by differential privacy ● Entity id (e.g., ad creative/campaign/account) ● Demographic dimension ● Stat type (impressions, clicks) ● Time range ● Fixed secret seed Uniformly Random Fraction ● Cryptographic hash ● Normalize to (0,1) Random Noise Laplace Noise ● Fixed ε True Count Noisy Count To satisfy consistency requirements ● Pseudo-random noise → same query has same result over time, avoid averaging attack. ● For non-canonical queries (e.g., time ranges, aggregate multiple entities) ○ Use the hierarchy and partition into canonical queries ○ Compute noise for each canonical queries and sum up the noisy counts
  47. 47. PriPeARL System Architecture
  48. 48. Lessons Learned from Deployment (> 1 year) Semantic consistency vs. unbiased, unrounded noise Suppression of small counts Online computation and performance requirements Scaling across analytics applications Tools for ease of adoption (code/API library, hands-on how-to tutorial) help! Having a few entry points (all analytics apps built over Pinot)  wider adoption
  49. 49. Summary Framework to compute robust, privacy-preserving analytics Addressing challenges such as preserving member privacy, product coverage, utility, and data consistency Future Utility maximization problem given constraints on the ‘privacy loss budget’ per user E.g., noise with larger variance to impressions but less noise to clicks (or conversions) E.g., more noise to broader time range sub-queries and less noise to granular time range sub-queries Reference: K. Kenthapadi, T. Tran, PriPeARL: A Framework for Privacy- Preserving Analytics and Reporting at LinkedIn, ACM CIKM 2018.
  50. 50. Acknowledgements Team: AI/ML: Krishnaram Kenthapadi, Thanh T. L. Tran Ad Analytics Product & Engineering: Mark Dietz, Taylor Greason, Ian Koeppe Legal / Security: Sara Harrington, Sharon Lee, Rohit Pitke Acknowledgements Deepak Agarwal, Igor Perisic, Arun Swami
  51. 51. LinkedIn Salary
  52. 52. LinkedIn Salary (launched in Nov, 2016)
  53. 53. Data Privacy Challenges Minimize the risk of inferring any one individual’s compensation data Protection against data breach No single point of failure
  54. 54. Problem Statement How do we design LinkedIn Salary system taking into account the unique privacy and security challenges, while addressing the product requirements? K. Kenthapadi, A. Chudhary, and S. Ambler, LinkedIn Salary: A System for Secure Collection and Presentation of Structured Compensation Insights to Job Seekers, IEEE PAC 2017 (arxiv.org/abs/1705.06976)
  55. 55. Title Region $$ User Exp Designer SF Bay Area 100K User Exp Designer SF Bay Area 115K ... ... ... Title Region $$ User Exp Designer SF Bay Area 100K De-identification Example Title Region Company Industry Years of exp Degree FoS Skills $$ User Exp Designer SF Bay Area Google Internet 12 BS Interactive Media UX, Graphics, ... 100K Title Region Industry $$ User Exp Designer SF Bay Area Internet 100K Title Region Years of exp $$ User Exp Designer SF Bay Area 10+ 100K Title Region Company Years of exp $$ User Exp Designer SF Bay Area Google 10+ 100K #data points > threshold? Yes ⇒ Copy to Hadoop (HDFS) Note: Original submission stored as encrypted objects.
  56. 56. System Architecture
  57. 57. Acknowledgements Team: AI/ML: Krishnaram Kenthapadi, Stuart Ambler, Xi Chen, Yiqun Liu, Parul Jain, Liang Zhang, Ganesh Venkataraman, Tim Converse, Deepak Agarwal Application Engineering: Ahsan Chudhary, Alan Yang, Alex Navasardyan, Brandyn Bennett, Hrishikesh S, Jim Tao, Juan Pablo Lomeli Diaz, Patrick Schutz, Ricky Yan, Lu Zheng, Stephanie Chou, Joseph Florencio, Santosh Kumar Kancha, Anthony Duerr Product: Ryan Sandler, Keren Baruch Other teams (UED, Marketing, BizOps, Analytics, Testing, Voice of Members, Security, …): Julie Kuang, Phil Bunge, Prateek Janardhan, Fiona Li, Bharath Shetty, Sunil Mahadeshwar, Cory Scott, Tushar Dalvi, and team Acknowledgements David Freeman, Ashish Gupta, David Hardtke, Rong Rong, Ram
  58. 58. Reflections “Fairness and Privacy by Design” when building AI products Collaboration/consensus across key stakeholders NYT / WSJ / ProPublica test :)
  59. 59. Beyond Accuracy Performance and Cost Fairness and Bias Transparency and Explainability Privacy Security Safety Robustness
  60. 60. Fairness, Explainability & Privacy: Opportunities
  61. 61. Fairness in ML Application specific challenges Conversational AI systems: Unique bias/fairness/ethics considerations E.g., Hate speech, Complex failure modes Beyond protected categories, e.g., accent, dialect Entire ecosystem (e.g., including apps such as Alexa skills) Two-sided markets: e.g., fairness to buyers and to sellers, or to content consumers and producers Fairness in advertising (externalities) Tools for ensuring fairness (measuring & mitigating bias) in AI lifecycle Pre-processing (representative datasets; modifying features/labels) ML model training with fairness constraints Post-processing Experimentation & Post-deployment
  62. 62. Explainability in ML Actionable explanations Balance between explanations & model secrecy Robustness of explanations to failure modes (Interaction between ML components) Application-specific challenges Conversational AI systems: contextual explanations Gradation of explanations Tools for explanations across AI lifecycle Pre & post-deployment for ML models Model developer vs. End user focused
  63. 63. Privacy in ML Privacy-preserving model training, robust against adversarial membership inference attacks Privacy for highly sensitive data: model training & analytics using secure enclaves, homomorphic encryption, federated learning / on- device learning, or a hybrid Privacy-preserving transfer learning (broadly, privacy-preserving mechanisms for data marketplaces)
  64. 64. Thanks! Questions? S. C. Geyik, S. Ambler, K. Kenthapadi, Fairness-Aware Ranking in Search & Recommendation Systems with Application to LinkedIn Talent Search, KDD’19 [Microsoft’s AI/ML conference (MLADS’18). Distinguished Contribution Award] K. Kenthapadi, T. T. L. Tran, PriPeARL: A Framework for Privacy-Preserving Analytics and Reporting at LinkedIn, CIKM’18 K. Kenthapadi, A. Chudhary, S. Ambler, LinkedIn Salary, IEEE Symposium on Privacy-Aware Computing (PAC), 2017 [Related: our KDD’18 & CIKM’17 (Best Case Studies Paper Award) papers] Our tutorials on privacy, on fairness, and on explainability in industry at KDD/WSDM/WWW/AAAI (combining experiences at Apple, Facebook, Google, LinkedIn, Microsoft)

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