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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
) Y. A2 o* p" h; Q: y) R( Fto do-business
" M* C. E. F& ]7 p) M0 H1 E. T rt random 360
/ T  `. q( M' C. w) q fd 1: I7 v: k2 i. c5 A
ifelse(other turtles-here != nobody)[  w; V  [/ X& G" q/ T( a
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.# |3 m( H/ V5 j) ?! v
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 U  ~5 O1 P3 u( V* b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 V& q, m) @+ z" P% o7 M' W
   set [trade-record-one-len] of self length [trade-record-one] of self8 P; j# q* m) _0 t
   set trade-record-current( list (timer) (random money-upper-limit))& ~! R) N& ]3 L$ q4 X; R

8 I, G: s# B# |$ K. c, K! @* b问题的提示如下:
5 [# S0 x9 j0 }4 E6 W& O4 x+ `$ R9 Y# {. O0 O: A& U  g1 }5 Y
error while turtle 50 running OF in procedure DO-BUSINESS& x4 J) N0 E& S
  called by procedure GO0 z! r: P9 ^5 T- e: p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% L& N6 L. |( @! _( Z  J# p
(halted running of go)
) }/ F$ o% v& e+ r  V8 r2 @7 S) N1 z9 s9 K4 F
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~! M& p$ V0 K5 W
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
" @$ `, {4 i5 F! x. tglobals[8 x3 u1 Q1 s( j% ?
xmax
5 k- i* P' I' ?+ r! o& L1 |ymax6 S1 l/ X+ ]( n  J2 l; |! f( ^
global-reputation-list: M! X+ o  u+ Q3 w( d' w' W- h

% p5 J1 s7 s" d  j$ V;;
每一个turtle的全局声誉都存在此LIST
# X: i5 o2 N6 a, w3 E9 d6 ~credibility-list
/ v" D" K! m/ T, c- Q$ E9 i6 W;;
每一个turtle的评价可信度
# s  A% N" E4 Shonest-service
4 Y7 G, z- N1 c2 ?1 {5 B% z# S! dunhonest-service
' l5 E( T& S# i% foscillation
# D: C2 x3 f3 F% qrand-dynamic- _' e9 Z8 P9 [* }8 ?! \& a- ?
]
6 |% R5 A5 ?; @/ }; ~- I
; C( W% E% R3 b- g/ }! r% f. oturtles-own[
' K1 K9 f- Y+ v) ftrade-record-all5 t9 f1 p( b/ z9 |1 `9 K5 z% e
;;a list of lists,
trade-record-one组成% J  x% a3 V$ s. m
trade-record-one; z4 W1 m; F- z2 V8 b- s
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# ~, |8 f* a+ G8 h! h( {/ Z. U: t/ z( b- C8 R1 Z8 v0 C! P- L
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]/ M9 k9 I4 H$ K8 h" U2 e8 G% v
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
. j7 o' O: }9 Bcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
/ _9 g0 ?" T) }0 Cneighbor-total
0 N5 A0 J. u0 g;;
记录该turtle的邻居节点的数目
* Q' c  U* M7 N9 P- btrade-time
2 S: l* N, C  s;;
当前发生交易的turtle的交易时间$ N. ~8 Q) k4 C+ ?& h4 F" {! p
appraise-give+ y4 N4 c! ?# D# `* T* \
;;
当前发生交易时给出的评价
5 i9 v9 N+ W3 ]2 l: Happraise-receive6 b( J- e% F  K: r4 T" M4 C: D' R* l
;;
当前发生交易时收到的评价8 w% n2 f# v+ P# a9 h
appraise-time0 f: S2 \2 ~) M. O/ k0 L; ]+ o
;;
当前发生交易时的评价时间2 K- g# R8 F: v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 J  X+ g* U8 o- R! ~1 {
trade-times-total
1 ~0 n4 L8 {- `- C;;
与当前turtle的交易总次数- `4 M6 @( s  L3 j3 I
trade-money-total. P  |+ A# b" w3 G7 ?( M- ?
;;
与当前turtle的交易总金额9 T0 K0 I: `9 j& N; q: m6 V
local-reputation
6 i9 K) f$ a' ?! C& Kglobal-reputation
) t1 I& P9 T) Q6 m8 Acredibility3 V% e% o! d/ f2 i
;;
评价可信度,每次交易后都需要更新- ^! y/ B/ @0 T. d0 R& n5 q$ L; m
credibility-all+ l. `- h# z) R4 D
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据3 j# u2 l* S& o, A8 e4 {: s

7 [+ V9 g3 j7 ?1 }, L3 E& X  G;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
$ Q$ E  L( q) u1 acredibility-one
/ }- m, O' F  r/ q; W- ]6 b;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people0 H# G# @' a* |9 X- {. @
global-proportion2 x: z) g, r5 m" q* f
customer
4 N% G8 d/ h. g; J& Vcustomer-no
( z# J. b; b" X) Ltrust-ok. Q; j9 F1 o5 Q9 R2 G1 g* e# h1 t. H
trade-record-one-len;;trade-record-one的长度: M2 N% j# J; S4 b  w
]
2 f7 p% J) {8 \  g5 I) S% f- x3 V
6 i! K/ `9 L; [% _- q9 y+ K;;setup procedure1 O, j& N; x. T( x" \  e9 Q
) p: ~( f& Z( m9 [5 G
to setup: |; M& E: F) `6 u
) f1 u$ p9 z; s7 ?/ V8 N0 y/ _
ca

3 T$ L" C/ e: h* U" V
; Q4 f2 t, A' }7 ^: T* v2 ], Vinitialize-settings
/ ~) w, d$ j' j! {/ q
  S/ u, \3 i8 R' L' O) [. {! P
crt people [setup-turtles]

! ^, s* d3 V# `3 \$ c1 l0 Q; g; f( |3 k$ F& K# {& N# M3 p9 E. \
reset-timer
5 `! v% N  x) C

3 d; W% Z" |$ d  dpoll-class
3 e3 v5 _1 w# C  O# B+ q
" N( q3 M! n9 ^: @( q2 t
setup-plots
, K- E# C4 q) E: D) _$ s
: ?9 d; F! L$ l
do-plots

3 D5 p/ z2 {- w, K* a1 ]$ Tend
8 c4 ]3 M8 X  I3 B" [7 `" X  x# }' U, m( R' D0 ?/ ?1 `9 V/ I
to initialize-settings
+ L6 v2 J9 M$ S( C" }1 |- m2 T
4 D4 y( w1 S9 h% Y' Bset global-reputation-list []

' }" h6 Q1 G8 P4 v0 s$ m
- _  s% x& u: Nset credibility-list n-values people [0.5]

8 b, f7 U4 I0 Y- N: w
* s" W  e$ e' D/ A  Z: sset honest-service 0
+ k( w5 ^* l1 D" a/ O
' h) Y" |3 J9 q
set unhonest-service 0

* \+ \& ]- _1 Y! Q& M( {+ M
" K; h: l& a, u+ d7 yset oscillation 0
/ i/ _! ^& R7 A2 a0 G5 N# h( Y
/ @; o9 c; q$ @" N7 [! U
set rand-dynamic 0
2 z: W- l) ^- F* F
end+ V: ]& H: M& w9 P7 e+ J# b

0 W. o3 k) D1 o: Z& ^# Y8 e( Eto setup-turtles ( K- F0 \8 `# y% _, n9 l
set shape "person"1 U6 t% g( _0 \  I2 @. B( k8 |
setxy random-xcor random-ycor
6 C( q; e0 l) ~set trade-record-one []
' T1 v' w" Q7 h& ~
" W* [7 K- v1 s
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 h/ h/ x$ m  S, C* R8 a# G
' X4 y+ F% m2 q- ]9 |% P! ^" l
set trade-record-current []
1 D. U. C7 {" Kset credibility-receive []
& R) _- T" B- C2 h. c6 u" [set local-reputation 0.5
7 t5 ?: e* S: H* X1 {: ?3 Q. pset neighbor-total 0
) r! l, O, o  Q9 e) U9 i2 }set trade-times-total 0
! C+ f0 O% n6 T5 `  s7 _+ t. q0 Q0 Xset trade-money-total 0
4 _, _7 C0 n8 |* j' p3 iset customer nobody
& v6 f5 K4 B& h/ X  _set credibility-all n-values people [creat-credibility]1 a( ~# c) j' E8 K  W  b% H9 l
set credibility n-values people [-1]0 v7 T$ {0 i1 m; v) E- ]7 e* h
get-color
, }- N& u" j$ U* l" p

5 y, r0 B3 V" j. _& t0 [! J" g/ yend
2 F2 }# O. z8 _" c% X! {$ F' E
, E3 @% t& V4 Z$ ^" X- ~7 bto-report creat-credibility
, w6 B9 c$ a: `& U: dreport n-values people [0.5]
, m* R/ ^8 C  t# Xend
7 y/ \' A) V9 L9 l+ o
6 b4 ~3 ]9 a7 N$ Mto setup-plots8 f4 L6 @5 U: L! x% ]
/ d  E; _. T) B- ^- b
set xmax 30
6 X1 o3 \/ y, k: r# h, _
/ l+ A: N& U) }3 l5 q
set ymax 1.0

5 a2 h5 I8 K" H0 r! P1 c% Q" P, N% B3 L9 x. c* W* z
clear-all-plots
% e7 L  R* S) }

2 j3 A- {' H& a% h$ ^6 X1 e. esetup-plot1
. A# G' N( c4 e. C( r# o

5 E0 c; o. N% h" q+ b0 b8 Ksetup-plot2
$ C3 w1 t5 q* P
/ H: t6 a/ ~( c& p, @- W. z- |( P
setup-plot3
: w  x% @& O5 d6 o$ u+ ?, B: V" L
end" Z3 f5 f% r2 B" A
. U8 ?3 J# y3 D$ t9 Z' |% R
;;run time procedures
5 ]# V, f4 T6 [) G
$ u1 M' a4 M: [" p. Wto go
( \0 S0 {. U2 X! J. s
! I+ S. y4 @. sask turtles [do-business]

+ G4 ^* R) g/ g2 z# E9 H  Qend
" _- h- ]3 N3 T0 w! O) e2 C
; a; j! N. M7 T0 K8 R6 @: uto do-business ) F- k. j  `% Z! s# R; F

* c4 S$ g' z( T4 D4 ~2 q7 `* }: W  Y* ~
rt random 360

3 ?! R$ H! Y8 H* Q0 x4 G- u4 w/ c
$ L) Z: o. F- {, f: Cfd 1
0 Z( }) J; w' y: I4 p% P

4 r0 l0 E. t# W7 e& X/ W% J, O0 Hifelse(other turtles-here != nobody)[

" I, y6 x# q" u! \* d7 ]( I' c) ~1 o! q" [# ?
set customer one-of other turtles-here
( O" r% D0 Z1 d" p! i
8 j/ L0 ^1 n/ ]' Z0 f
;; set [customer] of customer myself

- @' z- z2 O1 U1 b" P  N; T  l+ m0 l- z$ V
set [trade-record-one] of self item (([who] of customer) - 1)7 V9 ~8 X9 s: |0 c! H. \
[trade-record-all]of self
# {  X7 N) N* p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ d: l# {% e* F& O3 g5 g9 \: T- \! C/ Y4 D# `& p: T+ K- k- R
set [trade-record-one] of customer item (([who] of self) - 1)
+ W2 e8 g) ^1 z, W[trade-record-all]of customer
, F) x) \6 a8 y, }' x

: f% a: T  k( iset [trade-record-one-len] of self length [trade-record-one] of self
# F' o) H& ^' |% F8 l
! N5 F5 {3 w# ~# a% o' |$ Y+ O
set trade-record-current( list (timer) (random money-upper-limit))
- d" |- W& N& y2 d! M) U

, Z% v& f* i9 U3 f+ I0 Task self [do-trust]
* U9 _- N- G$ l9 g9 B;;
先求ij的信任度
) H- G# S* J  h4 |6 ^' e% ^# x2 C
6 r0 O. A) C3 |7 q2 Gif ([trust-ok] of self)
6 B; @9 a" o& Z$ g;;
根据ij的信任度来决定是否与j进行交易[
4 h  W. q2 ^9 Eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) K' V) T: S7 o! }
% {7 w% K0 p, i; p5 i: m[

% Q. ^# f7 x/ F3 l$ r8 M. @  V: p  p- Q/ ^: n
do-trade
( ~2 x! U0 H" o* s7 y- @1 ^

- U! {, {" \* O8 I* yupdate-credibility-ijl
8 u9 I4 X! h1 z
. R# b2 L' _, \& U9 ?5 s
update-credibility-list
9 _& p2 p$ I, H- l* S4 n) w, h) g

$ C7 l0 a1 G* Y# W# r3 d3 L. O0 B" ]0 w* k
update-global-reputation-list
9 e, O1 \+ N6 f

% j! w8 j. {3 x4 K7 V7 V: `4 L. Fpoll-class
0 [8 a: U& _0 K2 I. J* k0 M
. e0 Z5 l9 J8 R4 L
get-color
4 S" m; j7 n/ Q$ j
1 O$ ]0 p( ^* ]
]]
  s' k8 Y1 n+ _, H3 U( J7 k9 a4 a5 o8 W+ d1 c
;;
如果所得的信任度满足条件,则进行交易
$ O) Z" ]) {7 J3 n! e0 o5 s5 D
% m: a& m" v8 G: [& l5 s9 L" w6 Z[

3 q2 t( \2 ?! C' O7 o
$ n5 V. u* z' i) R1 Prt random 360
4 _" r5 u" g1 T4 U; h
7 {" _0 z; w& J8 K, J( ?
fd 1

) g3 i  C+ l" C' J1 g9 b6 \+ m0 p, q1 p- k0 n6 y; y
]
& w4 |8 y9 ]: b9 }8 R; Y; u
$ J7 `% w0 T' J5 `
end
6 d# n! }/ K" r$ J# c2 `

) G- c: Q4 G6 v' ~0 ?to do-trust 8 L0 e2 N3 f8 \. k, j
set trust-ok False5 F( {* B5 B! @9 b- ^& \. [

" m# o! X8 F# l/ T

( c7 b6 B! n6 S. k+ elet max-trade-times 0
7 e+ Z( h6 Y/ v% Mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 R8 ^3 J0 T7 E. d+ H1 ~
let max-trade-money 0* o& h, Q4 M! y6 o" }( @5 p, `  C6 c* Q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ F+ y- R+ }5 J! I6 X7 k3 E
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ {' O9 R8 Q$ n) y9 a& J
& S2 c- }( T  }0 H# I! B1 o- Z

% R8 j6 {0 A7 z& T# F1 S5 E: {get-global-proportion3 t( u3 S4 f" R) A
let trust-value
6 F  @% I9 M/ P- T; wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
6 n% _& V& q. d
if(trust-value > trade-trust-value)
5 b5 E6 U6 p1 y( l[set trust-ok true]
6 V  m% A* h- X! ]- q% `0 X" Kend5 v9 c' t" Y4 Y% B
% K0 m+ s  u9 j& `
to get-global-proportion
0 \3 D5 k0 q3 z  C+ M, Vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 m( E+ y* r3 ~) G+ K
[set global-proportion 0]* b) T0 d1 B* l7 C: P
[let i 0& e" Z% f6 Y# X! y
let sum-money 01 B7 G; R* s2 [' W1 n7 k! S
while[ i < people]
3 V2 K. z, U/ h, L; u1 o[& M1 I" ~) r- D$ k$ O* h
if( length (item i
6 ~; i1 W, F9 k3 R' [% c[trade-record-all] of customer) > 3 )

, U7 z( X; D  p; J6 ]4 Q/ }[
# w0 p0 Q8 G" F/ hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 o1 q  [, C' I, v- S# m$ F& T
]) t2 f: I8 u2 p
]3 E1 Q" M# K+ B- g* [; h- i: D  n
let j 0
% P) b' F) \7 w, J* \0 t5 @$ H9 Clet note 0
2 {& e4 Q8 U% K5 Cwhile[ j < people]" L( L1 `5 r; s. ]
[
& T7 O0 `& P! P; {* T/ F& ^; qif( length (item i
! \7 r" r% k' D1 v8 m1 Z[trade-record-all] of customer) > 3 )
, R$ l/ @$ j. X! @: K( p
[
/ L. p3 ~. D- difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* |6 N# v) E5 E) b; N
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ l3 b6 T3 @1 e: |" ~) k[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 p# Q5 I! S9 x9 `2 p( D, Z5 l8 ^
]
6 f4 k5 U6 v! t9 q! n6 d: U]8 Z% g5 @, E; E" A  H5 C# F. i
set global-proportion note
6 V. C. H" u% y+ M. N) r]# V3 `, }" w' V' X! V2 \
end2 b* V% U0 I/ v& q4 c: [$ z* x

& u/ I2 h3 S9 Z2 H# r( p) `5 Hto do-trade
9 ^( S( n. H% n6 Q;;
这个过程实际上是给双方作出评价的过程2 c4 k+ U* `7 Y3 i- M! K/ \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% j& e  W2 }1 j+ D, ?3 M* l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# I! Q) Z5 g3 g4 ]6 Y# Q
set trade-record-current lput(timer) trade-record-current9 X+ t( N, I  s# P: b& Z8 B& ^
;;
评价时间+ s) R2 ^5 \0 b; S% o& N$ a; Z
ask myself [& W1 X+ M, t* n  U
update-local-reputation' v/ A' B# q) _& Q- n; e. R
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 j2 j6 ~8 J. U- I. z! @' B9 ?, K7 H]; E8 q4 T/ X; v6 @1 q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. q& X: D: b- D4 s  j$ S/ v, g2 j;;
将此次交易的记录加入到trade-record-one$ e, _' V. P" \0 h8 b6 ~
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ K; |3 n/ T* a8 P, m0 _
let note (item 2 trade-record-current )) E5 Z2 W2 R) n( R7 M2 f
set trade-record-current; q% y* F. e+ Y. V, [' I# }
(replace-item 2 trade-record-current (item 3 trade-record-current))

+ t7 ^  }* g6 ?! a, |3 @set trade-record-current/ F! O3 J+ C7 G. ~& V/ \  g
(replace-item 3 trade-record-current note)
) m" _; U  n/ m7 f9 p$ r) [! U
0 i5 ?* r9 D6 e1 p9 ~
& B3 J. P. b) W( H; x9 b
ask customer [
( _' T1 j; ]' Y  j" aupdate-local-reputation; z2 X- P9 J$ ]7 h0 X- w$ t; M1 e
set trade-record-current2 r- U" V, j5 C6 L' M: ~6 R$ T
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 o# ?$ \3 A8 p' R]$ }  ?$ H8 e* I2 b
# B0 e- ?2 a7 M( |! L: ^

0 r8 v: g5 o# Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer: f' H# u( w+ U8 b* z7 J4 K
* U/ J! r# Y: l+ k9 W2 F
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# z+ }4 j( ~) J5 @- L;;
将此次交易的记录加入到customertrade-record-all% p2 ?) R* ^' C# ]1 Z
end0 _5 k7 j6 {& ]1 X

# h8 K4 {. Z' f6 [& E5 `. [* f3 R( eto update-local-reputation
; k: S" D' G! ]# ?6 ]7 t( b$ x! |set [trade-record-one-len] of myself length [trade-record-one] of myself
% I* j: v& E# ]. c$ L# q7 M. L4 h2 F
, e6 W  t& _- G3 ]. ]7 h( Y3 N; c4 S
;;if [trade-record-one-len] of myself > 3
. k: k$ X9 W( D4 x$ T2 d
update-neighbor-total
8 b* @2 s$ c5 S! r! @# _, {;;
更新邻居节点的数目,在此进行
$ r' X8 i" a3 g8 O* qlet i 3
3 R% w! T2 L6 ?3 J  ylet sum-time 0
  G/ Y% C: u1 ^; Awhile[i < [trade-record-one-len] of myself]
. |. O5 y2 O: S1 T0 [( w/ v[
! y$ z' X8 _4 y  ^! E! p! Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). i  o0 s7 k8 `+ O1 Z/ C2 k
set i
' e8 P; y7 y/ J( r9 g( i + 1)
: O" @9 X0 L: {9 a  z) {: y8 S
]
' t# _6 v% s) ylet j 3- R+ o; f* y- u  I# {! x
let sum-money 0" |% ~/ p. v. F0 L  l
while[j < [trade-record-one-len] of myself]
* ^. i0 h; F) L: `[6 S/ H/ ~  g- I0 g2 I& X1 K
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)% ^, {0 l1 Q% S8 V8 H6 r  N& q
set j: D2 ~# y9 C2 a  F$ p' {* d
( j + 1)
: ]) f6 I9 }  V% s2 }
]
4 s, M: V  D6 b" P& l( glet k 39 z8 I, e, O% P, [' W
let power 0! H8 n: g1 q- E) }/ E$ l2 Z
let local 0
# p9 P2 l, [% Owhile [k <[trade-record-one-len] of myself]
+ m) z5 c. {9 O, c[$ @( S. i3 b" H4 ~# J7 Z: R7 F$ h
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) 6 M! B2 H' C4 }: W" y
set k (k + 1)
/ |8 @0 S" S5 T+ k; R8 c- K]( B9 q. r9 V0 Q( A' w
set [local-reputation] of myself (local)' H; z, p) ^0 d
end0 }* h# t, R) K
' f* a( j# B" N- F2 r$ C5 x, s
to update-neighbor-total# b- P! U0 r% e0 ~. V

/ ]. I6 ~7 a! Dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 p8 p) j' _8 m& F5 m6 Y: u8 x' v

) i# M6 z" J- B& [7 |

, C$ C1 x! U* S/ f1 Jend- B+ o7 _1 O" r9 x& u2 e

2 M/ ^: w% E9 T4 sto update-credibility-ijl 8 n! o4 u5 \( F/ p: n% g

: w# P# w* x! L7 J4 {1 R  Y0 J;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
& Y4 h2 r9 S9 n) s8 l! o+ R! Rlet l 0
- w- k, A4 p8 n( k& I: z8 iwhile[ l < people ]2 I( L" u! G6 C
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
; D9 \" W6 ~. b9 K1 e3 `9 U[* p* T! }" _# h
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 [' ?) {. z( c9 F; x* Gif (trade-record-one-j-l-len > 3)6 ?& f0 ~: h7 P6 P9 i0 e7 f% q2 I
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
% y( j3 @% X) s. @. {5 n1 Ulet i 3. l: K6 P6 G- W
let sum-time 0
2 h) {! k* I7 U/ n; N" ~0 D5 Dwhile[i < trade-record-one-len]
  i: s- U' M: D0 t- I  P: i/ {[
% ^- E7 b+ Q' p' a; Rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 h( X3 B: ~, j$ }4 h+ Zset i
0 X$ D* S! u% i0 X2 k+ }( i + 1)

8 I) Z  v) E3 l. |" x% Q]6 p; q- c# A# t. ^
let credibility-i-j-l 0% @9 C+ u7 k8 o# \+ j! u
;;i
评价(jjl的评价)$ W+ B7 T, R. n! z1 V
let j 3
: i9 n, i5 m) q- ]# }let k 4
( X7 }6 S* [" pwhile[j < trade-record-one-len]
4 |9 x& \; P  I" h/ n2 s' z% t[9 k- i, j% G$ _" R' o. a/ g. ^
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
2 Z3 X3 Y1 s0 G& z5 U; V- d7 o1 [4 Qset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
7 t- B& I3 C2 _9 U! ~* P5 z" N: kset j. p2 Q3 o- W. ~) g+ G1 o9 P
( j + 1)

6 T. Q  p! c1 K2 M' Y( T5 Y8 S2 E]
6 O! X5 \& Z+ h  ^& Nset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
6 k; u" l9 F  S
: H: W$ j( {7 y# ^

  q" X7 o  q! ~2 q; j3 ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ Z: K; I1 \& o( H, X" q" C$ V) g;;
及时更新il的评价质量的评价1 J  {5 Q6 K( f* C2 g; c
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 ~2 h9 X+ _. D- ?' ?! K/ Fset l (l + 1)  C, n$ k# ~- _; E
]
% G. R9 N' Z3 j6 {end
2 W8 G. C% `- i/ s! ^  u" ]: x- s+ @3 K
to update-credibility-list  \9 s, F: s" n- F% G9 K
let i 0
' T& n6 B! b" m0 h+ Rwhile[i < people]' `& W* Q. D6 i( S6 w0 J( A
[
! F0 X% c4 {9 E+ vlet j 0
4 K& P5 i; F7 ?* V# Tlet note 0
& Q8 N  \+ D. m% J/ j% T& `  Ylet k 0
, a; n, n' x1 U9 o+ [;;
计作出过评价的邻居节点的数目) K; K! ~( B" T" q8 x! q5 N
while[j < people]- L1 J$ w% l0 R( G
[% W8 x$ p. A- B& r
if (item j( [credibility] of turtle (i + 1)) != -1)$ Y0 S' T9 h8 V( _! I
;;
判断是否给本turtle的评价质量做出过评价的节点
6 J7 v' i2 T# t[set note (note + item j ([credibility]of turtle (i + 1)))
1 W. m9 W+ n! o& H" h;;*(exp (-(people - 2)))/(people - 2))]

  c0 O3 ]! `8 e1 X, B0 i8 X# L4 {set k (k + 1)' h2 d8 x  @+ ]
]
8 M/ L" a% ~: r# y6 P6 n8 Hset j (j + 1)" ?: {. C& k! N3 y5 R
]
* f  M, M. S3 s8 O) i7 o8 Cset note (note *(exp (- (1 / k)))/ k)* r: u- V  d( \0 s. s
set credibility-list (replace-item i credibility-list note)
1 @# }( O/ f! U) g+ Yset i (i + 1)
' W% k7 D9 E3 f& I  |]
3 D) G9 t. r1 S3 Y, }6 L: W1 Pend9 C2 _" H7 [; E& k8 u
1 X! k! j/ L1 g: F9 s2 V( @% U
to update-global-reputation-list
* K0 @+ S* F  p8 ]' W# i( ~let j 0
% P' {1 f  M% }4 Gwhile[j < people]
, i8 s3 J! a$ C$ R/ _# I[5 T& ~# O. b& r, Y0 Z
let new 0) V% j) H* X  i' q
;;
暂存新的一个全局声誉. |  v; O3 J5 \3 Y1 ?' w( o
let i 0
' Q3 N# n9 s0 d. l: s8 U" `5 I) tlet sum-money 0
8 n$ {/ h  D# mlet credibility-money 0
5 B1 q* l5 e& e/ s1 Twhile [i < people]
! o; N5 U9 |* @: ?  L2 O$ r4 h[
- b$ q7 q, l$ Z$ D, ?$ cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  l7 W# J3 i! s4 Y, Qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% h# N" j  k4 l
set i (i + 1)
1 q( _. f( Y! {" Q/ {6 k7 _/ Y, n]" E7 D8 `. ^4 ]# Q7 [! ]
let k 0& ^% W6 S1 y0 n! N8 L
let new1 0, A$ a1 A6 M" y. p2 v. B7 h% D1 C
while [k < people]
' F/ w- X; w* [# p3 w7 `[$ C' O' {1 L& ~7 z' W8 {- _
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)/ s# d; j! L. J# Q9 D8 _; B0 V
set k (k + 1)5 O5 M. D1 N9 k- J, w9 ^$ @2 R3 J
]
: B8 X- @7 S: K0 Tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 B2 v! ~1 o6 N8 Y- ]set global-reputation-list (replace-item j global-reputation-list new)
$ i0 n1 \# M8 `0 I/ n$ |set j (j + 1)
& O* g/ A2 v5 ?* L  r9 N3 l]
9 G( p( h) d/ \5 p  P$ U3 K1 Tend5 D% K. x: R+ D) L: v( `: \

. F' h2 J; P- _- k* U0 N4 d( Z2 }9 V/ T
, S* J3 N# E. A* m# I6 c3 D9 o( d( ]' ~7 z. ]5 d
to get-color/ q/ |% C; S1 }) F

4 X* C% i- J* m4 k4 [; V3 f; Fset color blue

; `, U' n3 Q* U4 W! P$ Wend+ a4 J* e, b& O; n. L. l% H& u

9 G, w7 b, x  C7 T! Z* W! N1 dto poll-class
0 Q! T/ Y" m7 a# b" x8 R' cend
/ t0 |2 ^0 I" y7 s
$ _, L7 N6 i$ a0 Xto setup-plot1
3 O9 d9 K* m2 B3 a  R" T4 b! I6 k. X& `4 `* l2 N8 w
set-current-plot "Trends-of-Local-reputation"

: I% K" l# X+ g3 E$ P5 t9 p' g5 F" K* M& u# t. h
set-plot-x-range 0 xmax
& I+ B& j9 x! h
. Q$ U; f# x5 n' Z
set-plot-y-range 0.0 ymax

. @$ Q/ L* _0 [" d: [" nend
4 T1 h; e* m) K, O
0 f) W4 E0 y/ T! R( y4 A, |to setup-plot2
6 ^& [1 B  T& g3 J( S$ I, Q  ^( q1 ]1 H6 k- d3 p, b# u
set-current-plot "Trends-of-global-reputation"

0 s+ H! o7 ]+ b$ K0 i( Z+ U% E" z- }( N$ L0 P! H% P7 w$ P
set-plot-x-range 0 xmax
; O3 p9 d8 ^+ _( ^% L. o
  n9 ]% n4 K* b' _1 e
set-plot-y-range 0.0 ymax
+ \6 X0 e: J9 T) O+ P
end
/ F3 v1 U& Q( h' M* b0 D) U9 I9 v9 }% n  i: V* t+ J. \4 I
to setup-plot3; H! k  {" Q9 Z6 y5 }3 E
( z6 o, L7 J# v3 ]; L% N7 N
set-current-plot "Trends-of-credibility"

" R. P6 l; N! w( D- _2 ~! m% s  _9 Q% P* ^& q
set-plot-x-range 0 xmax
) |6 b- @2 `4 C) Y$ D; Y4 I" [
  T/ i. Q9 m+ ~9 ~' ?2 Z
set-plot-y-range 0.0 ymax
. S8 ]! X6 l9 h7 z8 W
end# L) S+ G/ S: W$ A3 V% F

' n* U. ]# ?. v$ Cto do-plots
# j* s5 Z" |4 F9 |* P/ A4 eset-current-plot "Trends-of-Local-reputation"
7 j' @+ u8 g. n5 u' Uset-current-plot-pen "Honest service"2 j5 k0 q8 l5 Q8 N
end9 ~( ?1 b& p: {! F# L
* i9 K3 `* {2 y0 c$ f- h
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
( o& B8 n% [6 P( O' p2 G4 o! F! T; D% K) J: `
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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