CRISP : Well baked structural solution

invar control structure invariant relationships used
select control starting phase selection process
refine parameters controlling tangent refinement process
setfom input figure-of-merit parameters
only request specific phase sets from an extended run

CRISP Option Code Arg   Def
  data set number dset n   1
  optimization level optim n 0-3 depth of study 2
  output listing list n 0-5 depth of study 0
  total phase sets trial n random phase sets 64
  best phase sets best n look in depth at 1
  minimum E value emin n from .invfile  
  max generators rmax n from .invfile  
  start from bdf phases pbdf   progressively randomize with each set  
  trial 1000 psets xxxx   check best 10  
  go for broke zzzz   check best every 500  

invar 1 invariant types to be used in the phasing process      
    use triplet and quartet invariants all    
    use triplets only trip    
    use quartets only quar    
  2 minimum A of triplets used     from file .inv
  3 minimum B of quartets used     from file .inv
  4 maximum triplets allowed per generator     100
  5 maximum quartets allowed per generator     100
  6 reduce A and B values by this fraction of \(\sigma \) A and B     1
  7 control eligible quartets according to X-vector sum      
    include quartets withXVsums<LO or >HI parxv    
    include all quartets allxv    
    include quartets with X-vectors inthe data sphere insxv    
    include only quartets with X-vectorsout of sphere outxv    
    use negative quartets actively active    
  8 lower limit for cross-vector sums - LO     25% of max to 2.5
  9 upper limit for cross-vector sums - HI     75% of max to 4.0
  10 invariant \(\psi \) applied to negative quartets (in degrees)   if no fragment \(  \psi \) estimate 180
        otherwise 0

select 9 starting weight for phases assigned in random mode 0.25
  10 integer used to seed random phase generator 1 137
  11 integer used to seed random phase generator 2 13804

refine 3 maximum number of refinement iterations 30

setfom 1 control flag for pretest of FOM values      
    pretest FOM values after the 6 \(^{th}  \) tangent iteration pret    
    do not pretest FOM values nopr    
  2 optimum RFOM value for CFOM/AMOS calculation     1.0
  3 optimum RFAC value for CFOM/AMOS calculation     0.25
  4 optimum PSI0 value for CFOM/AMOS calculation     1.5
  5 optimum NEGQ value for CFOM/AMOS calculation     60
  6 weight of RFOM value for CFOM/AMOS calculation     1
  7 weight of RFAC value for CFOM/AMOS calculation     1
  8 weight of PSI0 value for CFOM/AMOS calculation     2
  9 weight of NEGQ value for CFOM/AMOS calculation     2
  10 automatic termination of multi-solution process     yes
    continue even if FOMs < optimal FOMs cont    
  11 RFOM lower rejection limit for 014 and 024     0.25

only [a] 1 - 35 request specific phase set numbers to look at in detail  

[a] Generally used after terminating a CRISP ZZZZ list 3 run, having spotted some interesting phase sets that may be worth further in depth study.