Presentation on theme: "Date/Time Representation In Support Of Intelligence Analysis David M. Cassel Sarah M. Taylor, PhD Gary J. Katz Lois C. Childs Raymond D. Rimey, PhD Lockheed."— Presentation transcript:
Date/Time Representation In Support Of Intelligence Analysis David M. Cassel Sarah M. Taylor, PhD Gary J. Katz Lois C. Childs Raymond D. Rimey, PhD Lockheed Martin, IS&S Research Engineering
August 23 rd, 2006 Outline How timelines help analysts Requirements for Timelines Lockheed Martins research Dachselt & Weiland critiques of standard timelines
August 23 rd, 2006 How do timelines help analysis? Timelines provide ordering and temporal context Make it easier to see conflicts: On March 15th (2001 understood from previous context), Mr. Jones left London for Kabul, beginning a trip of several months to countries in South Asia and the Arabian Peninsula. Mr. Smith arrived in London in 2000, establishing a close working relationship with Mr. Jones there during the late spring of the following year.
August 23 rd, 2006 Timeline Requirements Represent various kinds of time expressions (absolute, relative, fuzzy, set) Reflect ordering and spacing of events Represent different levels of precision Represent reliability of information sources Be able to scale Maintain user orientation during navigation
August 23 rd, 2006 Aspect 1: Smooth Zooming View changes slowly to allow continuity Hash marks change with zoom level
August 23 rd, 2006 Aspect 2: Fuzzy Dates and Times April 98 until about September 2000
August 23 rd, 2006 Aspect 2: Fuzzy Times (continued) 8:15 tonight Thursdays in May the past three summers
August 23 rd, 2006 Aspect 3: Abstraction Present different levels of detail Reflect underlying information
August 23 rd, 2006 Aspect 4: Context Bar Shows temporal context Thumb for slide, resize Lines within bar
August 23 rd, 2006 Aspect 5: Stacked Timelines Shows patterns over time Visually find approximate patterns Based on Week Month Year User defined
August 23 rd, 2006 Problems with traditional timelines Dachselt & Weiland identified 6 problems with traditional timelines 1. Views are discrete and fixed, thus they are bound to one specific [level of detail] and have a static size. 2. High-level views hide too much data, whereas detailed views suffer from lack of context and orientation. 3. Scalability, e.g. for mobile devices is not supported.
August 23 rd, 2006 Problems (continued) 4. Missing support for zooming lenses, i.e. high- detail views or focus areas within a coarser time view. 5. Requirement of additional cognitive efforts for reinterpretation and orientation due to missing smooth transition between views. 6. Display of absolute time is missing, i.e. scroll- bar based views (e.g. in applications) only show relative position within the collection.
August 23 rd, 2006 Conclusion Timelines are helpful for intelligence analysis But there is room to improve prior tools We have laid out the features we are developing and shown them to address Dachselt & Weilands criteria Thanks for listening! Questions?
August 23 rd, 2006 References Dachselt, R.; Weiland, M.: TimeZoom: A Flexible Detail and Context Timeline; Conference on Human Factors in Computing Systems (CHI 2006) Extended Abstracts, April 22-27, 2006, Montréal (Québec, Canada), pp Dachselt & Weilands paper ACE2005: al_official_results_ htm TERN 2004: Ferro, Lisa TIDES: 2003 Standard for the Annotation of Temporal Expressions. x2_standard_v1_3.pdf
August 23 rd, 2006 Backup
August 23 rd, 2006 InXight Time Wall Display: Icons, text Lanes for multiple timelines No manipulation of data Overlapping events are visually blocked Points in time only
August 23 rd, 2006 TildenWoods Centrifuge Display: text, colored bars Modes: Absolute duration Relative duration Point in time Can present multiple timelines One layer of depth Must change underlying table
August 23 rd, 2006 Visual Analytics VisuaLinks Display: icons, text Can compare timelines Points only Change database to add/modify material Icons merged for same type/same time
August 23 rd, 2006 PNNL ThemeRiver
August 23 rd, 2006 I2 Analyst Notebook Display: icons, text, links Not specifically a timeline tool Does not show time scale, duration
August 23 rd, 2006 TimeZoom Smooth zooming Good focus feature