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[[Category:Work Log]]06/11/2018 - Worked with Wei to get him set up with system[[Category:Internal]]===Fall 2017===<onlyinclude>
07</15/2016 - Refining hazard model: revising variables used, comparing Cox Proportional Hazard and Lognormal Accelerated Failure Time models 07/18/2016 - Cataloged SQL tables, revised STATA script (STATAdatasetup2.do) to include ratios, replace cashflow with ebitda, and filter out firms smaller than $50 milliononlyinclude>
07/19/2016 - Investigated baseline hazard of Cox Proportional Hazard model. Compared to Lognormal and Loglogistic Accelerated Failure Time models to try to predict hazard rate (not just hazard ratio)===Spring 2017===
0702/2002/2016 2017 - Adjusted dataset to filter out firms that are small Planned immediate next steps for LBO project; fixed bug in matching code (<$40m) or matchpair indices not listed in major exchanges (AMEX, NYSE, NASDAQbeing stored correctly). Consulted Brian on descriptive statistics of dataset.
07/21/===Fall 2016 - Investigated negative ebitda ratios. 07/22/2016 - Performed further testing of hazard model. Ran preliminary matching analysis using patent flow data. 07/25/2016 - Cleaned data setup do file. Organized list of data problems to consult with Ed.===
no edit summary
==Summer 2018==
[[James Chen]] [[Work Logs]] [[James Chen (Work Log)|(log page)]]
09/06/2016 - Discussed workload for the week, plan for project going forward with Ed and Jake.
11/17/2016 - Finished matching in patent flows and stocks, contingent on having a completed active patent start/end table from Napas
11/18/2016 - Minor bugfixes for STATA code (got winsorized variables working consistently); began working on patent start/end table
===Summer 2016===
07/15/2016 - Refining hazard model: revising variables used, comparing Cox Proportional Hazard and Lognormal Accelerated Failure Time models
07/18/2016 - Cataloged SQL tables, revised STATA script (STATAdatasetup2.do) to include ratios, replace cashflow with ebitda, and filter out firms smaller than $50 million
07/19/2016 - Investigated baseline hazard of Cox Proportional Hazard model. Compared to Lognormal and Loglogistic Accelerated Failure Time models to try to predict hazard rate (not just hazard ratio)
07/20/2016 - Adjusted dataset to filter out firms that are small (<$40m) or not listed in major exchanges (AMEX, NYSE, NASDAQ). Consulted Brian on descriptive statistics of dataset.
07/21/2016 - Investigated negative ebitda ratios.
07/22/2016 - Performed further testing of hazard model. Ran preliminary matching analysis using patent flow data.
07/25/2016 - Cleaned data setup do file. Organized list of data problems to consult with Ed.
[[Category:Work Log]]
