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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# f  p; w  E! }4 ?+ E
to do-business
4 F: h3 t: s0 }, j0 W  s! S rt random 360
9 W% t, u' J. ?7 w; b" g7 K7 j% ~" }  w fd 1
; _  e+ [+ y: ^5 r$ W ifelse(other turtles-here != nobody)[
, S" u3 u7 g( a5 W7 _( D& t   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.- D* M$ T* b  z* \2 u
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 k- p% E, R5 d$ _& O   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 B4 `# A9 A' f1 m) Z   set [trade-record-one-len] of self length [trade-record-one] of self' t# C, R0 S/ x7 L) ?: y/ w5 G
   set trade-record-current( list (timer) (random money-upper-limit))
% K6 ]( z; x" D7 }" d
: c9 O/ i3 h5 p问题的提示如下:
9 ?1 ]9 y. a2 z* o, U1 M- O: U$ F* r; W5 t3 G, I4 v
error while turtle 50 running OF in procedure DO-BUSINESS
1 Z0 y4 l/ {# O4 e/ D  called by procedure GO- Z* K8 Q4 n" h, G) V
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 g+ `$ L5 ], A  d+ n# J! N! E
(halted running of go). Z3 _# X8 f4 j  B
2 F; C" F+ @6 L. t  ]) ^' k
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~~
8 D6 e' h% [4 _, N, z, o$ ?2 _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
% [. h+ K. l: N" u( pglobals[5 ^5 g* i" S; c2 C# u& |: R7 e" j
xmax
/ ~/ [/ T5 Z) r/ ^2 qymax
. e  X2 v9 l2 }global-reputation-list
1 `3 n9 E1 `5 ^# H8 ~/ N
5 Y, r- T, n9 y) X;;
每一个turtle的全局声誉都存在此LIST+ ~( v, {. n4 ]% c! X3 p4 j
credibility-list
7 P2 B+ v6 F% C8 C. K2 K;;
每一个turtle的评价可信度
( M5 ?6 R0 X; e: W: vhonest-service
( S, `" f3 L6 w  m8 T. X0 i- z; Punhonest-service; F! E# J& N2 W0 o
oscillation
/ H! y: k! L$ x. S3 M' s' ?$ ~rand-dynamic
- v4 i# Q* _, a( k8 W) V4 g( T! P6 `- Y]
! E  [* F: w, e+ o+ Z* J% l1 U7 l/ C# p9 G$ ^1 j& N6 a
turtles-own[* o! T3 Z' J- m( y
trade-record-all
, ^/ _% o  Z, y: f4 q4 K& N9 T;;a list of lists,
trade-record-one组成
1 M; y+ _2 W# |' s+ ~: R' X+ N  Gtrade-record-one
0 L! l* t, {/ A% B! |$ ?;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录' V4 M  [& a( Q4 u
  @& R5 g& i, J- S  N: B
;;[
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]]
) \( a' C) ^* m' e6 \- }! i/ |1 I) ytrade-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]9 B- m* G) u7 j( v7 M2 E8 [
credibility-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: G5 t' B% g9 e/ [, Y
neighbor-total
' z5 l1 y4 N4 v6 ^  G0 F;;
记录该turtle的邻居节点的数目
; _& K2 ?3 M  \+ x0 S5 n/ Vtrade-time
0 H+ o- t5 ^) t% ~;;
当前发生交易的turtle的交易时间' {1 q4 Y  H/ Z
appraise-give4 r  L/ V& J7 ~3 ^+ \
;;
当前发生交易时给出的评价8 Y7 Z! W* m, |2 E; b% [
appraise-receive( E* L* O! S6 J% D
;;
当前发生交易时收到的评价
' p7 D' C( M' J# wappraise-time
) ^; N3 p6 z) S, K+ l+ I;;
当前发生交易时的评价时间& k& w3 U, }( N
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ A7 a: J1 O4 s. ]2 Ktrade-times-total
0 P+ O. T! c7 R) z  x9 R8 e;;
与当前turtle的交易总次数" O# R4 g0 J7 X% g
trade-money-total  v( [& i3 v: `! ~
;;
与当前turtle的交易总金额$ l9 y% k* {+ ~0 p; X
local-reputation
1 o0 v, s" f( A. c" B) b2 }. ~1 gglobal-reputation
% {) W  K2 i, f- |) Ocredibility
% ~; b. \% g9 v9 B;;
评价可信度,每次交易后都需要更新
, U7 x/ [/ p& O4 J4 \+ \& ecredibility-all
; W1 G3 P' ^  N# K, |. o# W;;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
) s1 F# e$ S- W9 v
4 o# m- S2 Q5 m" D4 d: k;;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
0 ]9 a- J* x, [credibility-one
9 l& C) Z9 D! n9 [2 ^9 @6 K;;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people
  l$ ~1 b/ b7 A: [% ^global-proportion
& c; w& t! I, U5 O; [, K7 o; kcustomer& N) o$ {6 L. b3 g
customer-no* w8 `/ ~+ r- S  C; E( V
trust-ok' ^  s6 U. t& q/ A9 X! E
trade-record-one-len;;trade-record-one的长度
6 y  H9 w9 ^. f4 q. N]6 u. l, X+ g' d3 N

5 K/ U3 [- R8 z) f) G% T7 |;;setup procedure
: O2 o+ o( Q2 k9 g5 v
( S: n: B+ [/ N* d& ^to setup
" \" l! O7 y; |5 p/ I4 C! M
4 l( U/ F+ K( v/ ?* P- Hca

: R9 e* g/ m6 v" }: _: T9 N. |  o5 W+ s. L3 f% |9 G
initialize-settings
9 o$ H, d  A  }' J

- k/ p* e, h- k6 C' `1 {: ~crt people [setup-turtles]
5 T1 r9 @4 q+ U* C

; ^/ O6 k- i( ^' P& s) Wreset-timer
! m7 E2 F4 x9 [& w! y; V

& X) q+ V! u( D- |0 Xpoll-class

# o* {# |/ @& [* P% k4 ^) E0 {0 A, w8 E$ `4 ]* O  k$ \+ \: x
setup-plots

# l; e" j0 F! h6 p- a9 B
2 a4 b" l& y# M% s+ K! |do-plots
' `5 S/ y$ K: J0 V2 p0 ^
end# w1 B6 ^" J, J' _
% b% T, I2 X2 w. C. U/ x6 _; O
to initialize-settings
- V0 B# `0 d% o2 E3 }5 k& T. X  C$ k% F+ N8 Y  }' I
set global-reputation-list []

! e! j; {$ n3 B# t+ b# b* H
" L& V% P3 x+ G' ]8 X) s; |set credibility-list n-values people [0.5]

, p: o$ w" M" G
# F: t) r4 d* Jset honest-service 0
$ `" {5 m& t3 C" m( T4 @

+ F/ s. `& R5 @" oset unhonest-service 0
6 v# n+ ~$ x7 ^0 H# p, ?

9 J6 R+ c/ @/ l* l# r/ M) e, |set oscillation 0

! V7 ?+ F3 m/ v: m
" \9 w# W* X# E% f; N. D# ~$ wset rand-dynamic 0
3 x- X# ~4 f; ], p7 J/ l
end( f4 l, W* j, R) |1 w; I% j
: E' {3 }6 S2 r# f! q: K
to setup-turtles
8 }0 `# ?' O) x& L9 W$ Rset shape "person"
( K- x8 @9 N% @% lsetxy random-xcor random-ycor+ k, J% \2 {" {% z4 H3 K- q+ y6 S
set trade-record-one []
6 N/ F4 a6 T9 o

8 [# ~0 `6 N3 L* c5 Zset trade-record-all n-values people [(list (? + 1) 0 0)]
+ O# m! `7 J1 _) }
2 V$ V  J' F; y
set trade-record-current []; \2 f- H% T8 N; x
set credibility-receive []1 g# ?6 D' U2 \- ?
set local-reputation 0.5
8 A1 n  _" _  M+ J3 G1 Dset neighbor-total 0- [% ]1 @' l' Z8 \* B) }
set trade-times-total 09 h& N" S9 _9 K( k7 `  U; r
set trade-money-total 0) B! T1 ^2 C$ O$ G2 Z+ p
set customer nobody
8 ]& x  V4 u8 b9 r" \  z: Yset credibility-all n-values people [creat-credibility]. y4 X- g3 l! d, v0 `
set credibility n-values people [-1]
: D6 T: {; e5 d5 b5 D7 gget-color; X! X) B9 `1 K% D

  p, o9 r/ e$ c8 d1 a% L6 mend
4 I  n1 o6 S( g$ I% w8 _5 x4 `
" {: i) Z) b* g/ P2 d" Vto-report creat-credibility( A$ V( h2 K; E) _
report n-values people [0.5]
: v. [/ Z6 g" v0 a& g  j  iend/ Q8 S7 {) ]3 Y: l" l* T0 ^
% e% f8 L" }4 ^
to setup-plots
1 w2 e$ V7 \" b- P7 ^5 f& z% B0 E1 b) |* e( A
set xmax 30

4 D: L8 _! P! b0 Q9 T2 y. w. M( d1 o& ?3 c0 E! o, G0 V( y) {
set ymax 1.0
6 b. a4 Z; x" f$ N4 |: F

9 z1 |& R, u9 i+ Q7 E5 q* @clear-all-plots

: d! I' h5 M* H  \5 x1 d+ W( M1 K- P/ I: U( P
setup-plot1
# L/ B4 a( H) B) L- k2 Y
4 `9 a( I: I6 g4 o4 K% Q  T
setup-plot2
6 @5 _, h  V% }0 V& |6 l. W. @' s
/ v, H  h2 I$ a8 F5 ^
setup-plot3
+ Q. T4 ]4 c% n
end& T4 E0 T( e; H0 ^

! a# H( O+ E& b6 t, L, H: Y;;run time procedures  J  T% e0 |- {% \# U" {$ q

0 O% l8 f+ a( l1 ~$ g) H4 a; Mto go
# N( x# k3 {* S' Q9 m
: z8 ]# w* e! ?ask turtles [do-business]
( n- v. h+ O5 W0 P' i
end% i0 e3 H0 l$ {& c1 r, h/ h

0 F1 x" ]2 U* @, c& Bto do-business 0 o" O: i6 a; d6 w

5 M6 ?  s0 Y+ U/ H: I6 ^
1 w$ X) K/ U+ l3 l' C2 a! w- Frt random 360

! F: z+ Y# W9 e. E8 U% }5 D. p. e! B5 H3 c6 j
fd 1
/ g% _2 H& X3 j  e" g# a& L

& [0 Y% m# k2 Z4 U9 w% o, l! _8 ?ifelse(other turtles-here != nobody)[

% T6 h+ E, G7 n8 M; t' V
6 M( B/ b( z0 e0 Pset customer one-of other turtles-here
/ u0 p* I3 r5 _
, P. f8 q4 N) A  K1 `* M* u
;; set [customer] of customer myself

1 t+ y/ ^- h$ z; Z% ^1 H# P- D. p1 q7 j6 U( {
set [trade-record-one] of self item (([who] of customer) - 1)
% B+ R9 L* n: f7 z, j$ |[trade-record-all]of self! {3 y! `8 ~/ {+ _( Z* ]
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ E  A' W+ X; O6 M/ {) R. Q
' u0 k% `# ]( }
set [trade-record-one] of customer item (([who] of self) - 1)- P4 \; W+ q' o, D. U: J9 d
[trade-record-all]of customer

# j0 z& }  h$ `) [. F4 N5 p3 k0 j7 T& Z+ h/ O
set [trade-record-one-len] of self length [trade-record-one] of self

0 x. Q, x# n9 u/ l
; N4 m$ V: x4 \7 l6 }; sset trade-record-current( list (timer) (random money-upper-limit))

, n# g5 b7 Q  l  l
9 m6 G) Y( R+ R* W. lask self [do-trust]
4 l$ U. p) X. Y;;
先求ij的信任度
+ N- c' a; ~% t% W9 L1 w3 K. ?5 z7 E' Q
if ([trust-ok] of self)
6 @6 K/ u( a0 {  Q: s0 k$ ]9 I;;
根据ij的信任度来决定是否与j进行交易[* i& B: b8 g. \2 ?; H7 I2 y" w
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# B8 |% k9 J& [

( N  b7 H" n' ~& v[
5 a+ m8 z3 B$ {/ L0 k9 A
4 w1 g$ K, I0 z
do-trade
( S3 o' o! B0 L8 s8 _
2 B9 E/ }) \# y' A1 E5 h! u& D
update-credibility-ijl
# J+ l+ a- [/ {  e0 U
& r' p- _7 Y* [- [' p7 F
update-credibility-list
1 O  d) Z) P2 P6 |# F
& m. S. ]* M, M. v2 u
8 g# U! W( X! q$ J/ l
update-global-reputation-list
. S2 O! j. f4 }, L5 ~* _
  g5 S3 i) K5 _* B1 g! Y7 G, A
poll-class
! ]$ h  Z: J/ k" K6 k+ Z5 [- [- _3 F5 ~

; c* a' P+ S& W. q3 H- Bget-color
3 ?, R9 Z1 b/ P, v- Y
) G0 T! I' b. v  G0 {: Y
]]% g% r0 R4 s  Z1 Q
6 _3 y. P; J/ k6 O
;;
如果所得的信任度满足条件,则进行交易  {* {. D! d! A# ^& }9 w' v$ l- R, M
( O" t( E6 j) T  `8 R/ ^
[

; o. S1 q) O% ~2 p4 X% Y5 e' d1 }8 a1 i' @" e: p% r! L) ~3 s3 G
rt random 360

/ M6 W+ F5 w9 \$ @
3 J/ k" v! v) V: w! zfd 1

3 A, [% x/ e, A2 T
( V! x3 i( l0 _- i6 ?  c* A8 @]
! L3 p" u, x" n& M
. L2 a/ R0 A* A7 b. {( g
end

5 |- h" D) O% A1 h. l. `
/ S9 y( r; K4 m$ fto do-trust
: p" R6 m( O, B: h  H: v/ N& Iset trust-ok False
$ a% {( g: ^6 K) b
& s# E+ `, B3 J5 `3 w7 \
* t2 d  R6 {4 M( c9 ~$ D
let max-trade-times 08 J8 \/ k9 j2 J3 W
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 o4 `3 V) a2 \0 Clet max-trade-money 0- N) x5 b( y' x2 K/ Z7 c2 p( M
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# w$ y) S* o% d5 _! P
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 c( }' C! Y+ s* f& ^
, V. r# W8 _, w+ L# ^
% \+ \# Y, t- [0 A, t
get-global-proportion, b4 O+ }- k# y0 [& e: v
let trust-value6 w8 Q- `9 W$ N; _
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

+ V0 Y  L" A0 D. u% b3 }if(trust-value > trade-trust-value)9 g' \( }6 G  o8 G0 v
[set trust-ok true]
$ {8 [& D3 a9 C9 H: O9 D( B6 d, Cend
0 D7 B/ Z6 M3 \8 [& \+ w* E3 `1 J# ~& A  Y6 P  H4 Z
to get-global-proportion7 b& J! v# K& w5 q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: L9 h  m  z6 W2 G  B% P[set global-proportion 0]
% E8 n5 D, t* G  F9 A; N[let i 0! \, v, F9 |4 p; B" h5 O6 w3 L
let sum-money 0; @& s5 G) {0 W/ [0 C
while[ i < people]! J( Y' E* H+ F; {5 ?# K3 H6 r  Z  R
[" f9 C! F- R9 `7 a: w
if( length (item i
: r: H! R- y) y[trade-record-all] of customer) > 3 )

. D0 l1 L6 v4 t2 j[4 D# W$ ]0 j  |
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 F; W7 S/ o9 A2 l+ R- @]9 K6 Y- i& _! s! X$ x: @* X4 ]
]2 e6 j1 y! A8 P& r
let j 08 x0 J8 _1 u" g4 ~# N( f) X
let note 05 y) [8 f0 X0 c6 h& w+ w5 ^9 L
while[ j < people]1 R' S4 X( h* U7 j7 W# a# R
[
) S. v# R0 b! l* Dif( length (item i: U! ^0 |/ n) p: e4 a% Y
[trade-record-all] of customer) > 3 )
* @! T2 a$ V$ ?% ~( s
[2 u# S/ O* i, B  n& a, v4 l1 n
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" N+ j8 L4 V, k7 ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 s0 l5 a5 x1 _" I[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 a( ]1 }& U0 T! o9 h1 r6 U" z
]+ A8 w9 v8 q  O" G* b, a* |# ~3 X
]9 d- Z' v* q% r) K9 F: m% f1 @
set global-proportion note0 t8 K5 B4 J9 H' k4 ]' J  q9 y' z
]
. I7 d0 t, k$ ^/ W1 a7 P2 Xend
+ ^$ [% L1 W9 w
0 o1 e, }, W6 w" bto do-trade
! U% E; `* k! S7 d! `;;
这个过程实际上是给双方作出评价的过程- b2 O9 x9 e7 Q3 s  v4 P6 y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, O& @3 H* T" N; Y- Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ o( i* O' A5 ]9 H8 S
set trade-record-current lput(timer) trade-record-current
& \) O# |. P: `) s3 U; x% D8 a;;
评价时间1 l8 w! Y' B0 i" p! r
ask myself [
, D5 D! U+ t0 s! e# C: r6 g, ^; Dupdate-local-reputation/ D+ _3 |5 @* ]9 R5 P: k) H
set trade-record-current lput([local-reputation] of myself) trade-record-current5 \# D; b" k8 i' i. e4 l1 w
]& A; [/ @+ F3 [
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 }* p) }+ C+ ]0 Q! q7 ?2 q9 `
;;
将此次交易的记录加入到trade-record-one; {: ~! s# N# ?) h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. ~- T& Y" `( L2 c6 x" e4 alet note (item 2 trade-record-current )
7 {+ ]8 f; f" d- n* B+ \- oset trade-record-current
, x' j5 p* Y& Z- x8 ~8 S9 U( `) x& b(replace-item 2 trade-record-current (item 3 trade-record-current))
) F9 J0 t2 Z- }$ Z1 A5 e* [/ Q2 M" x
set trade-record-current
8 F3 v3 m! S& ~' ?& V(replace-item 3 trade-record-current note)
$ F, Q# L1 ^# |) B1 f5 X& S7 A) |0 d6 t: I5 T  y- b

( }6 d; q: }6 v# w" Sask customer [
5 {/ [$ D6 @: p# c6 M* _update-local-reputation
. R) Y* ^: T; P8 D* y5 S$ ]* p' T0 Aset trade-record-current: j! q/ l. E5 N4 ?$ m' f- s
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 I9 \; O# ]* ^: H& \]# Q5 w- t/ H8 P& |; s) _1 Y* \
$ y' ]8 d; @% p, g+ B* o

# }' r$ l" {/ e2 lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 W/ v  G" D7 x" j/ Y
6 B6 h3 ]+ a1 x3 F9 K
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. n) N7 f7 J6 B/ k; k$ }3 D;;
将此次交易的记录加入到customertrade-record-all) G, A- k' g3 e$ f- n
end
; j$ C- y6 n( y% j; A" r+ ~# Z5 j( J$ c% S3 T( C+ E
to update-local-reputation/ Z) H3 H, H8 ^! ]9 S0 l
set [trade-record-one-len] of myself length [trade-record-one] of myself2 v! f4 W& \" I3 J+ x0 U

3 c/ }6 Z* s9 r( p' h% k* m8 R; c: l& V3 a! R
;;if [trade-record-one-len] of myself > 3

& U) A( H- z6 O0 Q0 cupdate-neighbor-total
! j9 `* `6 G& O4 }* x;;
更新邻居节点的数目,在此进行( J* n: ~1 D" D/ V; H4 m* L
let i 3
! i7 F' l6 t1 _+ xlet sum-time 03 P3 ~9 p3 K3 H2 t4 e( g4 }2 c
while[i < [trade-record-one-len] of myself]
+ w' q1 d' F$ h( g: V: V[4 L7 M& C+ H5 Q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! F: X& ~( B, W3 t2 Bset i
* @/ x5 d6 |" X2 l) L$ P2 F# h! q  J5 q( i + 1)
7 r  P$ A' w8 b5 U
]( }$ Z) M% _0 g8 L1 x" H; G& g
let j 3
. f: d6 p2 I6 X& @* }% k6 ]7 clet sum-money 04 j( B4 B% l! }5 |
while[j < [trade-record-one-len] of myself]- I$ C, n2 K, v- F) |) F* I
[
7 f) }7 V. G1 q, x4 `  k# Vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
* s2 E& X; A0 \; T7 vset j9 d3 T4 y$ D- \# j  q" \
( j + 1)
5 J7 s  r5 A$ _# G" P! g& ?
]" M% F6 o; b; T3 F
let k 3
4 ~9 A% d# p5 ?! P; b/ Clet power 0; o! t3 B' T1 P& O$ e6 q
let local 0( T/ V9 _. G, B# X' T
while [k <[trade-record-one-len] of myself], p4 U& G6 g$ n# T8 Q5 ?$ _
[
# V4 I3 b: y  r9 f0 U5 Oset 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)
1 b/ N) K* W4 ?1 y! A+ i" n* mset k (k + 1)
) w) e/ A6 i- @5 O2 h' X]
% d- P0 p' I! w  w9 A& Uset [local-reputation] of myself (local)
& [& m) I& \$ F2 e& s6 E9 Rend
: O- L: u1 u0 X& D( \$ h  L3 d1 u' M! z  h  F" f6 I/ ~
to update-neighbor-total  c$ i( L" {0 Y0 j* w

" @1 q$ d) M- ]3 A. Uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 ]/ |! L8 |9 L: _& S! y( H( J

# S5 p. p  a! R- h
0 d* C  K) T$ |+ q
end- h! G9 _% y4 \7 ?, g- ?: r

- s- H; J7 H& p* ?to update-credibility-ijl 6 x- ]1 k5 [" h% T0 o; v2 ?

7 m, q% ^7 }! y% ^0 _' b" P;;
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。
0 B6 d. L  b* L* b; r" g7 r/ Ylet l 0$ c, ~" s$ h5 d# m5 G
while[ l < people ]
" ^2 B" ~2 J5 K: j5 `6 k1 q1 X;;
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2 B- L+ ~/ ~. d) ~1 _0 J& g5 S2 B. {
[
% c% D: g, U1 ?# `6 e8 dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ c9 L& L) g! o! N" `- g+ sif (trade-record-one-j-l-len > 3)0 L+ m# j5 H7 e- D# Z
[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-one3 V+ s: J) J- o$ T; {
let i 3! U& b- f/ K( h6 O
let sum-time 0
% @; t! C4 t4 \while[i < trade-record-one-len]: U' D) ^2 {7 s6 y% n7 L+ \
[
0 f: U/ U' I, B3 x* Y. Y  t* Jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 ^. Q! U- a8 ^9 g; y& r5 Z. O7 H
set i
$ f/ q: E) _# i& B& X/ @! J( i + 1)

2 B+ X4 a( l* ^; V' L& []+ [, \+ m# G6 C( g
let credibility-i-j-l 0$ E. U0 @) m7 a, k. O
;;i
评价(jjl的评价)# Q" c7 [0 R) ^+ I/ [
let j 3  j5 \, l( x% H# {% H0 S
let k 4
7 X$ e! I2 m! e& Z1 kwhile[j < trade-record-one-len]
2 X! o2 ^+ f5 V) G" d3 b8 m5 Q7 f[
+ d/ ^7 [+ u0 T7 ^" ~0 swhile [((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, k$ j5 N- _. Y  K
set 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)
/ C( [( }- F4 p, \, {  |set j6 ~" C0 E; u% d; @- W" v
( j + 1)
# A0 ]) D4 i1 U0 R6 O# Q+ Y! O/ b( ^* F
]
3 h1 o4 y: v% H6 b7 zset [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 ))+ Q& H  s/ g8 y
9 a9 a& Y. o9 a9 ?, ^* G

& B8 Z8 [3 j; P) v, T4 K  ilet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 @4 r! n! t. {( j* z;;
及时更新il的评价质量的评价  `$ ~3 C$ E) }7 t6 F. @" X8 T
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, n7 j8 ^' H  V* gset l (l + 1)
, x; Z! N) l8 B* _3 |7 R]
( R. v8 A: {+ S# u6 B; K% Kend
, C& ?7 T! @( }, L2 ~
! K$ e% N4 H. L5 J, Yto update-credibility-list" X, I( }  u( E
let i 0. q" U* j& g+ o: _# [( C0 {% P3 i, Y
while[i < people]
4 _; `# N. Y. b+ O$ k[6 r; w% t+ c1 D4 S
let j 0
' p. @2 b2 W5 A% w% q! @let note 0
8 \8 y$ q. o, Ulet k 0! p+ Z1 g( }. M9 {' K
;;
计作出过评价的邻居节点的数目
( X! i3 g) x5 U) c  J( a, Ewhile[j < people]0 j; i+ Z5 b3 v- O, J# O$ s& p
[
+ n5 t2 X4 Y$ Q5 I' P) J' r$ Tif (item j( [credibility] of turtle (i + 1)) != -1)8 ]( R& W# F9 w1 M4 }
;;
判断是否给本turtle的评价质量做出过评价的节点3 r, v1 h0 {0 ]/ b$ I. a" P  e
[set note (note + item j ([credibility]of turtle (i + 1)))
) U3 t2 A2 e- E' N* V, {;;*(exp (-(people - 2)))/(people - 2))]

- w: q! K1 H& D" E0 s) ~set k (k + 1)
) Z. A: M% Z8 c' I8 n]' d0 m% z; k; g9 G9 D, S8 V
set j (j + 1)
4 l0 }' x5 i" Q' S- R1 _]
( d; I; l3 i9 |  f% z, pset note (note *(exp (- (1 / k)))/ k)
9 ?& d' ?( d) nset credibility-list (replace-item i credibility-list note)
( F+ \( s6 P1 R' k! m4 p( U. N7 A* wset i (i + 1)1 u( @( k% K. i
]
) V) T8 `; S' p1 send  a- p/ W& _( w9 V8 F& _

+ U' u* v. D% `; `7 M- k; z& }to update-global-reputation-list
/ N) P2 x+ C3 m- l5 g/ ~- ^! Olet j 04 h* J) B: A, C6 Z
while[j < people]' J, ?1 j9 P" A2 x
[
9 y2 K& Q, h: Alet new 0* W& I4 @3 c+ ]- Y3 J
;;
暂存新的一个全局声誉
/ X8 l- A. i6 u( J( i$ {' ?let i 0
. \1 }( T' D; [# s4 S1 Llet sum-money 0
1 f5 t* K& G3 M7 I9 }let credibility-money 0
! U" G# ]8 @2 U; O* K# L6 e1 {8 Swhile [i < people]
% T" X$ B6 K% `7 v8 {. J' d[+ }' D+ _5 W$ }7 a+ o
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 M% z% m  R$ B$ |% w3 X9 n
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 o, E9 O+ k3 ?) A% I. q
set i (i + 1)
- e7 J% a/ R, {" \# N]
" m. `" F$ e4 n: r! m4 w4 klet k 0: W% N4 {' X5 m% ~
let new1 0
: h7 l% z. L" g, p. h& g% D0 [; }while [k < people]
' }  U$ Y; J7 S[# L: O6 C) G5 a
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)& w# t) J6 B; V) K% k
set k (k + 1)
* F+ \1 W% k6 O2 @4 b]- ]1 ?* H3 L6 o# {( C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  v- l9 V6 Y9 r7 \7 Bset global-reputation-list (replace-item j global-reputation-list new)  R  f. }/ O, i3 W3 w/ f7 v) w* k, r; D
set j (j + 1)- W  l" t9 [8 W2 `+ j2 i  m
]" w. |) H- O7 p3 Z
end
( E0 L1 }! Z- b% Q5 d2 H; T9 `! r9 b# U; Y
7 y* p6 w. l& Z- [. T" g
) N2 e3 ]) ^2 Y2 u; R$ |- j& S
to get-color6 }) h7 Y8 T  l; H
8 ?& \- g% n( b
set color blue
  w# ?/ o* D% j2 Z
end
7 S. d5 n* U# H4 \! x3 r8 A9 E- I# O5 j* M0 B1 n  s9 ]) v. W, [
to poll-class& n6 Q& Q4 G, }& ]
end/ O" s7 k/ v. J4 P4 t3 j, l. N0 \8 T

/ t! e7 m7 e& t5 q, Xto setup-plot1
+ Q. e- j  u1 \6 ~! O. C! I0 h; g/ `8 Q% ]& J
set-current-plot "Trends-of-Local-reputation"

3 i0 Z  G' o7 ~' U: O2 a0 o* {! G3 D* j
set-plot-x-range 0 xmax
. {' S/ T+ z8 H6 V  y8 n; Z

( q& [, g: g/ y* Q6 t& R/ {set-plot-y-range 0.0 ymax

$ V5 f0 j9 {' d8 M! ^  u  v/ Qend2 E3 v: c- O9 i, _4 ^
, Z$ L" H& v( [! q3 Y/ d
to setup-plot2
* }, N* }! T# x/ {, i4 z4 O% }2 k! `' z' r( `
set-current-plot "Trends-of-global-reputation"
& F: ^/ v: L) c4 \! U2 c$ M

, |; f3 g% a* ^set-plot-x-range 0 xmax

& D1 a" j( L: [9 k
! G$ C  `" N4 C: U$ Aset-plot-y-range 0.0 ymax

/ M2 I; Z! c: t" R, Z; R/ z3 pend
( ~9 I& Y' c1 d0 K$ s; |: R! r. G/ g
to setup-plot3: u. g3 p, v2 @4 ?2 n

6 c7 I0 h4 o; W( J, pset-current-plot "Trends-of-credibility"

4 i3 i3 H1 b$ S6 R7 z& ^6 y6 t8 D& d' E  V9 H* N
set-plot-x-range 0 xmax
7 D2 W3 ^8 I6 N6 q( b

$ m/ m. r. r1 h  P0 u5 eset-plot-y-range 0.0 ymax
: s3 A* s7 R( F/ O: b! l4 G
end, o8 s6 W, a; A9 J5 b* ~- {
% ]) Z5 b, E" K; }: ^6 k( @5 f0 u
to do-plots
+ n! l; N0 I' d) W) |5 W$ |1 Uset-current-plot "Trends-of-Local-reputation"
+ J4 y. f' E4 }, Iset-current-plot-pen "Honest service"0 I2 @% B. Z9 P# Y2 }- C1 y
end
! v! [: ?7 a4 {: n9 N) s. \
& r' D# M: A  ^, c[ 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.) E8 G/ ?8 \* U$ V$ [; p

7 o5 ?9 P; _5 I. K5 l' e" z! ^$ f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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