PPT-Using history invariants to verify observers

K Rustan M Leino and Wolfram Schulte Microsoft Research Redmond ESOP 2007 Braga Portugal 28 March 2007 Overall goal Specify and statically verify programs Use modular verification local reasoning. . Işil. . Dillig. , Thomas . Dillig. , and Alex Aiken. Stanford University. Simplifying Loop Invariant Generation Using Splitter Predicates. Loops and Loop Invariants. Invariant. evaluates . to . true. Pranav. . Garg. University of . illinois. at . urbana-champaign. Joint work with:. . P. . madhusudan. (. uiuc. ),. . christof. . loding. (RWTH . AAchen. ). . daniel. . neider. (RWTH Aachen). COMP 401 . Fall. . 2014. Lecture 14. 10. /. 7. /. 2014. Observer / Observable. Official Gang of Four description:. Define a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically.. The 10,000-pound gorilla on your job site. Immigration law and policy: dinner conversation topic?. Water cooler topic? . For the construction industry. Increasing workforce investigations. Stricter enforcement of immigration laws. Swarup. Kumar . Sahoo. John Criswell. Chase . Geigle. Vikram. . Adve. 1. Department of Computer Science. University of Illinois at Urbana-Champaign. Motivation - 1. 2. Software bugs cost ~$59.5 billion annually (about 0.6% of the GDP). Please . Snarf. the Code for Today’s Class.. Today you will. Implement the observer pattern on some sample code. Hear about a few more general issues with the observer pattern. Take a look at . Tivoo. January . 201. 7. GOV.UK Verify gives safer, simpler, faster access to services. . [insert image tbc]. GOV.UK Verify is the new way to prove who you are online.. [insert new logo]. Safer, . simpler, faster access to services . -X. : A Comprehensive Invariant based . Approach for . Performance Diagnosis in Big Data Platform. Pengfei. Chen. Xi’an . Jiaotong. university. 2014-9-2. Background. National Defense. Health. Umesh. . Sinha. IAS. Deputy Election Commissioner,. Election Commission of India. ELECTION COMMISSION OF INDIA. ASSEMBLY ELECTIONS-2016. ASSAM, KERALA, PUDUCHERRY, TAMIL NADU & WEST BENGAL. Election Observation : Objectives. Props . A . chocolate bar. 5 paper cups. Invariants. An invariant is something that does not change.. Other names you may be more familiar with are laws, patterns.. Invariants in Maths and Science 1. Ahmed . Khurshid. , . Wenxuan. Zhou, Matthew Caesar, P. Brighten Godfrey. University of Illinois. Presented by Ofri Ziv. November 2013. Outline. Motivation. Design. Evaluation. Example. Conclusion. Motivation. Nebraska . MarketPlace. 2014. www.dhs.gov/E-Verify. . Agenda. E-Verify . - The Big Picture. E-Verify . Enrollment and Use. Additional Information. February 2014. E-Verify Overview. 2. E-Verify – The Big Picture. multiple observers. independent observers. observers sample same locations simultaneously and independently. match observations when the point count is over. matched observations, together with observations unique to each observer, provide information about each observers unique detection probability. Certain functions of . E. and . H. are invariant under Lorentz transform. The 4D representation of the field is . F. ik. F. ik. . F. ik. = an invariant scalar. (1/2). e. iklm. . F. ik. . F. lm.