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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:
: n2 ?% o! Y+ qto do-business
- o# y# ^" ^: f& l: d3 S. p rt random 3605 T0 ^  O) a5 Q! E
fd 1
9 B( Y' M6 {4 U" t" y. f6 p ifelse(other turtles-here != nobody)[
' A0 R4 z' A3 O) O) p% T% P   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.
, y/ g& ]1 D) Z2 w9 W8 u& s4 M   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 h. @" }3 T9 b" D+ b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 r  a; d/ P- w! d* v   set [trade-record-one-len] of self length [trade-record-one] of self
# i* i) R% E" \6 G   set trade-record-current( list (timer) (random money-upper-limit))
  v) M# R5 P, e) [1 S7 B1 r3 S! q1 S, |% j8 J; P- X
问题的提示如下:! G; E: E$ h. y; P0 l0 H( y

# Q+ H& N6 v, v1 serror while turtle 50 running OF in procedure DO-BUSINESS; E8 f/ S' `% F# E
  called by procedure GO
0 a; z7 V* m% I9 QOF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 @5 G, y* b1 w5 P. z* X
(halted running of go)
7 Z5 ?9 q7 U) _
# D1 Q* I) K& |: l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~~3 a( Z) a7 B% B! H) Y) X9 q
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2 t0 F! {. ^9 e. y% ^
globals[8 I$ w/ g* s! W1 u# b- e) ]
xmax$ H) h( X% K+ r! j% u8 d' O! S
ymax
. }) T  x6 w% V7 G9 J2 N3 ^8 Eglobal-reputation-list* U2 v- }+ T3 d8 |
' Q( b* m3 W  Q3 L, p+ }
;;
每一个turtle的全局声誉都存在此LIST* z5 ~  t' L( K# d$ S
credibility-list
0 }0 C/ m8 g. d+ ?( J6 l0 Q;;
每一个turtle的评价可信度
6 u  e  u. i6 ]3 m! Yhonest-service
) Q( P. [1 B( J; Runhonest-service
0 }- S% e! P, g- W& S: Voscillation
8 c6 m  Q5 C5 }5 Y  v4 w# [rand-dynamic0 M( z+ u/ W* `: s, s; [
]
9 g- a  m2 _$ b% t* x% l: q) x" r+ K# e$ v4 J5 [8 T6 L$ C
turtles-own[
& l2 D5 K: B) ~( {  S. G  mtrade-record-all0 i: E" y( ~. X" s* }
;;a list of lists,
trade-record-one组成
' g1 Q5 R5 Z' D2 utrade-record-one8 V$ n8 _$ T8 T2 Z9 l( ^" e
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% @* ]# i; N" T& j( F
5 p7 c5 Y+ L4 g;;[
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]]- V( y* u3 h" _
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]+ F1 S5 r* ~% t
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
1 x1 o7 X/ r+ v6 l4 o  y" Z, Zneighbor-total. A6 L& y5 r2 b% l
;;
记录该turtle的邻居节点的数目
# b' ]4 d, p) m$ Ytrade-time* B# Y$ @7 e3 e& ^/ L/ ^/ S
;;
当前发生交易的turtle的交易时间
6 R3 e" Y! R& ^; Happraise-give# @! Y1 W' J+ p: |. m, J* G
;;
当前发生交易时给出的评价
* d7 }; @" L. i# f% R5 t2 m5 Pappraise-receive6 {1 `$ H. d7 s6 b
;;
当前发生交易时收到的评价
3 m0 h% T& x; A/ U+ U1 v( f9 W3 gappraise-time
0 o' E, u- L: J;;
当前发生交易时的评价时间& e5 `$ r0 k0 p2 X5 N
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" a. ~; H/ e: Y7 X- x" n% }% I( {trade-times-total
/ M# Y1 u& k) h; ];;
与当前turtle的交易总次数
* m/ ]6 l, N8 R# \$ ^trade-money-total
. z0 l9 N$ M" V: M4 g;;
与当前turtle的交易总金额
  ]. Q3 t7 ?4 P- |# tlocal-reputation& j- O( X9 v: y0 w1 Q+ K; G% x  X
global-reputation
/ ]0 l& z7 E/ H) n: m0 H' Zcredibility- |' [2 N' A" l8 }) c
;;
评价可信度,每次交易后都需要更新
' c' k' M; g( V- Pcredibility-all
8 ]1 d& x& A; b+ }( Z& Q+ m;;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& _1 k: q6 }" ?: \6 M

! o8 l; C/ a8 b3 ~;;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
6 Z/ A, x& u7 R; |credibility-one
/ k, E5 C6 g/ {/ [3 M' C( };;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people7 ?( B! v6 `( U" R+ q2 g
global-proportion7 }. z' `% o* `1 M% E* ~3 |; p2 [
customer& M$ Q0 m. q* x. f
customer-no; _, k3 C, l/ ~4 T( Z
trust-ok
6 c% ~- L6 J2 _% A# _trade-record-one-len;;trade-record-one的长度
& F2 C: l0 R# G" {8 Q]
# a/ l: C! j$ q9 l1 g8 `- O
) ~7 x) t# a0 y+ A+ i7 ?;;setup procedure
9 y& l- ^9 r$ {6 K! v. n0 h
! h$ f4 B; l' z; g" i: c, [' Hto setup) o! H5 ]& ~8 I  L( t6 Z; H
( M6 `2 y# U8 N  ?4 H
ca
( }& b* _9 M9 \; s+ j* h

2 `$ t( Y4 A4 K, ?2 e2 jinitialize-settings

' |# V& t/ J" f9 I7 X9 N7 t0 E: s7 x; t. c* g
crt people [setup-turtles]
1 h, [4 Q2 t1 X; T' F3 F) ~

' M3 B! M: }( |( l# }  xreset-timer

  Z. W( w" L1 ^& B. Q) m( K0 d) G3 }8 h6 B3 e' Z( h
poll-class
: M, H; }  @; s3 A0 d
+ k) k) w; H" p+ N* c! M
setup-plots

2 m# x3 v4 P6 ^$ K
, T3 M1 j6 P' l4 Z4 Odo-plots

8 n/ E7 e. E' i, x0 Iend1 |) p3 t  K. p5 {/ k3 _

. J; x' ^8 a" }, h9 E7 Nto initialize-settings: W! e! c+ j' \
( e3 k" P) @5 k7 }  _
set global-reputation-list []
9 t" G& `) ~/ \
5 k2 V: M! j' h) X1 ]7 |4 T; v9 d7 M
set credibility-list n-values people [0.5]

; f6 H- ]! y( i3 \  J
# @& m0 \  C1 R7 i  ~set honest-service 0
5 b2 G3 T3 m* e# e$ N

+ s0 Q5 f9 R! w8 x/ y! ~7 A6 C$ Uset unhonest-service 0

5 g. F5 ~, f4 m+ z/ M* b2 @" L* X7 H3 C. K
set oscillation 0
% r% `# f( ?* X' E+ a- h+ {# y

1 B/ c( O5 M6 ^! A" a: o4 Zset rand-dynamic 0

$ I, z& g6 A& y  |% ]end
5 x/ e4 P$ u$ L# f$ A
3 ~) L1 }/ H) t+ _: n5 d1 c% Bto setup-turtles : H/ h8 U9 \) [0 c) t
set shape "person"  x. r& j, e; `- o! L/ F
setxy random-xcor random-ycor3 }* M% M! a) m/ k8 F
set trade-record-one []
; s! z* N, d& B* V/ x4 L# {6 a

: x+ U% \" V6 k" Q% }set trade-record-all n-values people [(list (? + 1) 0 0)] ! d) ]  H! ]4 Q$ w, y, M
/ g* i. }. M/ E, r7 M
set trade-record-current []
& q1 v3 x. o9 E9 n3 O+ t9 e  Gset credibility-receive []
. a1 Z$ A5 N5 v+ m' [  @9 mset local-reputation 0.55 w" e- o+ N# E
set neighbor-total 0; @7 t( y* O: C# V" A
set trade-times-total 0: ]. k2 \; B4 W- i4 @
set trade-money-total 05 P; g. }* M3 Z5 e4 o' L; e
set customer nobody
+ V6 Q, i9 M* E# }) Lset credibility-all n-values people [creat-credibility]9 y0 v$ `, s; ~5 f( j6 V. W0 ~3 H
set credibility n-values people [-1]
0 ^  J( ~+ v/ C' Y$ o6 |. Aget-color! F( c' Q: O% `8 z/ t
. w4 g2 n3 j* f% d8 Y% r) w
end
) i( C$ x* d+ h& h3 ~+ ~4 M8 e' k6 B0 G4 d7 w, i) N
to-report creat-credibility1 x9 f; g! C7 ?& R
report n-values people [0.5]
1 g- M6 u+ E. K1 x8 Tend
+ z% L9 ?6 D7 D! B& w2 g0 a( l; \4 ~2 n- P# u
to setup-plots0 I7 y0 C4 t# G+ H9 L7 Q8 _& l

" i1 E2 w% Y: H- Z& ?- Aset xmax 30
9 B( e% ~# L+ J( N" G

2 k& E, M8 A+ Q0 x2 X* T0 [8 Yset ymax 1.0
- e" K* J$ W2 m$ x, j
* \' i5 F2 L% z. @- k
clear-all-plots
) J- j; C. W& K

3 P: E* @' G5 e9 W8 ~setup-plot1

! M- w: i) i/ G0 X# \( _" m) c: f3 Q8 A0 f, P
setup-plot2

& p* A- U# W4 u, b0 X0 d7 J# Y) t* v' R/ d! H1 m
setup-plot3

3 j% M0 e- T: Y8 J2 r( |end3 H/ Q1 @+ Y" q$ `

  J) L! \& q* ~% X;;run time procedures1 m) @( M0 h4 @* d

0 l( S1 M% p  h, jto go0 _6 E. P7 Y1 k

1 @% ^# _' k+ K- j8 `& j( \( H& M5 \ask turtles [do-business]
0 p) }1 b& U$ K: W' p
end5 G' \$ ?) i9 B. Y
- J# u4 F1 [. e, N+ j5 T
to do-business / x. l1 j. s9 g/ r
% _% d4 ^& I. D' C8 R: o' n) r1 \

2 G2 u; t$ ~/ h" r- [  irt random 360
" p5 R# s2 K% j& Z* `" U5 W

8 T3 F0 d5 S$ R) Z9 l0 a$ V, rfd 1
( w! \: p! w  q; s4 b7 V' O
1 g3 l+ A1 @/ Z; A3 M) H: \
ifelse(other turtles-here != nobody)[

) E# P& k+ K% d6 ]
& \% l/ M; s3 S/ g$ l4 P7 H, [set customer one-of other turtles-here

" O& b" @& ?# R7 P0 f3 K3 j& F' j+ J# E" b& O
;; set [customer] of customer myself

/ k; K3 c, j3 e8 U$ J' g; J* M" P$ j3 l. N9 i9 @
set [trade-record-one] of self item (([who] of customer) - 1)
; y0 O$ G' z' V& q" K+ g$ M8 H[trade-record-all]of self; M# o$ a2 V6 F6 Q7 ~2 A
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ @4 N3 J7 c  r9 W- m

9 m8 _# T) g) T  x; z+ Yset [trade-record-one] of customer item (([who] of self) - 1); Q6 B8 h8 J: R. X) b) G
[trade-record-all]of customer
) }$ H4 a% s' T3 r

: Z% O2 x9 {3 F0 W$ y" [* [2 xset [trade-record-one-len] of self length [trade-record-one] of self
4 }, a/ r$ k* v6 X: ~

! g% `1 M/ m# R; q3 F+ d; hset trade-record-current( list (timer) (random money-upper-limit))
+ X( ~7 e) U; O+ q" k" U# G5 J; e
# ?1 j8 B6 f4 q1 K2 Y- h
ask self [do-trust]/ H8 K  {+ P/ v, B1 X
;;
先求ij的信任度
# z' U/ b# X. x" F# w- x$ x2 _5 ]- ?$ j+ S" p
if ([trust-ok] of self)5 k2 @. g% C5 I( H7 @. h
;;
根据ij的信任度来决定是否与j进行交易[' l1 L# T. p8 F
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' q8 f$ V1 q7 A: v1 l; C
' q. [7 t+ G  t5 U[
( J  I' p, y) A' j+ W
( i) [* V2 b9 x. Y# m! p, f3 u
do-trade

& _& K3 Y; P2 Z- B# m0 L" x8 w8 V0 a
update-credibility-ijl

" J* A3 V6 \3 h! W' J/ v
  o5 W; f7 E/ i& r0 m( yupdate-credibility-list
0 {2 `/ z- [1 D& T% d
4 N+ C' K) z% F
4 v  o7 y& `' |7 W, G" V$ Q% n
update-global-reputation-list
! ]( V  g7 c0 R0 d
  t  h/ l) Q7 h& c1 N
poll-class

0 z) u2 _' T* s" M8 ]8 p3 Q* U! _; E" [# o1 O$ X
get-color
& F9 ?* s$ m& d1 {3 i( l5 X

3 i7 \* l" D' B) Q; d. h+ m]]
' ^4 d/ S  W5 o! s' f
0 s4 a- J1 J/ [- Q9 }8 v;;
如果所得的信任度满足条件,则进行交易
$ B8 k3 w" p+ L) E, i) i6 i0 a2 ]3 b4 a4 P! O6 l
[

2 L. L) M1 r# ~$ _5 Q7 ]
; d0 C6 {0 }2 T9 B, `) ^, lrt random 360

0 T) O7 y/ c" E# r3 z8 P
$ y3 ?0 Z2 U. Ifd 1
) _, |% j- i9 ^$ `8 V: w, u
- q( n. x& d( o, s5 E0 p# S5 x
]
0 t) k& e) d. Q; b

1 g: c; m2 `/ i# z0 T3 xend
9 [2 m$ I3 c+ d+ ?- k- t% Y

8 {9 E5 ?7 i- s% }+ A4 n+ ^to do-trust
6 S! ^8 e5 b0 uset trust-ok False
; J# a7 i  u$ r7 z
0 h% R8 M& a2 Q# L
; Q: _& p, [, V% o6 ^
let max-trade-times 0
/ F9 q- a+ k8 f8 pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' r" f) O- z; V% M
let max-trade-money 0
# Q' h& a2 u) }  o3 Xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 b6 }3 e6 y# n3 {$ `1 s' i- k0 olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! T+ n/ V2 @& ~! i
- O. _7 ]) h; C* K! y
6 U0 }. G" X& u8 ]9 R2 P' \8 m
get-global-proportion# J% r4 |/ B  m( h/ |( N
let trust-value
6 @+ b  R, J( i2 z3 P# Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

$ j) S# n6 w& G8 O, _7 p0 J+ aif(trust-value > trade-trust-value)
* p" t/ s; \; K( z% v' F. Z[set trust-ok true]9 R! o8 c) c, O' }8 t$ e( @' R, l
end
: `  s: b% G" K4 O
3 t1 K& o. e0 b0 P) B' R! dto get-global-proportion
! v  f; n( g6 [, V; n6 nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ W; }! i7 i2 ]/ Q& f$ ~1 q9 E
[set global-proportion 0]2 {1 U" q. A7 m, E8 x: g' |2 k0 G
[let i 0. O6 _5 ~5 R8 `& m
let sum-money 0
' s% J. u; G( }3 [9 _while[ i < people]6 g! ~- I, R7 n  B9 w7 f0 I4 j
[: ]: j2 |# X; K6 u5 z4 Z" h9 {
if( length (item i
$ C* u6 ?/ {. k' L6 A: U[trade-record-all] of customer) > 3 )

. G# n3 z2 Z3 R# A0 E5 Q& Q[
8 O4 x, X2 x! E- C6 W( V4 M; K! c9 Jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 c" e" @+ k# J0 A& M- z
]# e5 Z0 M1 S0 X& d6 f
]
- o3 I- T, ~8 @$ |2 n: Qlet j 0
' f$ F6 {; @; d# nlet note 02 j1 u+ k) ], {  s4 R- Z* r
while[ j < people]* y( k, ], z6 V$ n# r
[
, e* Z5 X% X$ l( Cif( length (item i
; D) z0 ?, ]) j' a9 V( L9 o[trade-record-all] of customer) > 3 )
7 e, T9 v' ?$ B* d  V3 j- ?2 I
[
% @3 E, N' o0 I$ W1 uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 q% j6 u/ u' a. U[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 w+ X  n* r- L! f. y; Q- r, ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; o: L2 W0 U/ {  v1 G- c- c5 W2 D]1 H1 N( v  z7 T6 p& v
]# d) Q, l" {3 F0 ^
set global-proportion note
) ?4 a( Y4 F( `+ _9 a% ]5 ~]1 p8 k* ^: @8 e1 w0 v6 w$ d1 I
end
. t+ a3 M' k- L) ]* ?3 l- V9 U: g4 b* O) ]6 C) G/ R3 E
to do-trade$ Y* `0 s' q( y; @
;;
这个过程实际上是给双方作出评价的过程! s2 B- A& u7 {& v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 w6 b# W2 D1 s1 |4 p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: O7 W  f' r/ C; X2 P: _9 T) cset trade-record-current lput(timer) trade-record-current
- g( F: Q; ^% [" e0 r" j4 u: P" N1 d;;
评价时间
; Q  `8 L* W- Nask myself [& M  t+ b2 @; Y! f$ r
update-local-reputation
6 r- V; m  L& i- T  C% @set trade-record-current lput([local-reputation] of myself) trade-record-current
# ]- c/ q4 q; j]- Y- u4 _) n+ Y+ a
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. u1 k6 N. B9 d6 o
;;
将此次交易的记录加入到trade-record-one* P, S2 r: `/ D$ Y6 T
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" t+ C- O. f  h0 }# y! }let note (item 2 trade-record-current )6 y( |7 u' \0 G: w
set trade-record-current! M. W! B2 F+ m$ B8 k. h, O% g/ H9 y
(replace-item 2 trade-record-current (item 3 trade-record-current))

3 I6 |& a' c8 Y% F  |- Pset trade-record-current  h  W/ D6 o! N5 M4 r
(replace-item 3 trade-record-current note)
* |3 j* F% o$ J+ D: F' m
9 p0 l7 V/ S; v
5 z5 c; d# O, X# U; R1 X) q0 @) n* N
ask customer [
! P3 A) _+ g2 E( U  m, K/ kupdate-local-reputation2 M# N; b: \" Y) r; p( z$ p: E
set trade-record-current
) W+ ^& |4 W+ z; u% y$ j; G8 f(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 Y# b% z+ t7 t4 w& n+ s+ s
]4 B. X( `; z( Q
+ E: |, U: T) m
4 H7 w' ?7 C; \6 A" l0 e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ b0 r) [3 a8 E; u. a
3 R& V4 V* i! z$ Q6 n( v5 M
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- a6 a/ s3 Y, F' P: K7 L
;;
将此次交易的记录加入到customertrade-record-all
. I* Q# h+ a+ rend+ S% s5 t3 g- S7 y
; M* ]  A* E: ]9 k. P
to update-local-reputation
  n/ |0 J4 d2 N) h. zset [trade-record-one-len] of myself length [trade-record-one] of myself
* r8 V/ O) [+ P: d7 h* {) N' P& k) b7 J& ~3 d2 Q7 r
0 _' C% D8 i' a$ S, e% s
;;if [trade-record-one-len] of myself > 3

- g0 i9 S2 {" u$ t/ uupdate-neighbor-total- Q- y! B. o* Q  t: ^3 K. }
;;
更新邻居节点的数目,在此进行
7 |) q3 {, p" C( k3 v7 _let i 3' n9 }- J9 V% j0 a0 {
let sum-time 00 x+ u4 |+ S5 K- e
while[i < [trade-record-one-len] of myself]
( X! a$ e3 f0 C  R) ?% a* t, g[
5 O9 y. Z% z' g% o6 Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 V  F# z# {, G$ w7 n; x. Tset i4 d* {  q: S8 _) r+ l& I
( i + 1)

. P5 r; U- m3 P' G8 h]! p, Y/ F. Y# M
let j 3
0 p& f8 f) X  z( w/ F% xlet sum-money 0
6 l2 h2 ]$ \. ^- P1 o3 vwhile[j < [trade-record-one-len] of myself]
7 z" D$ ~3 `4 P, g- e2 V4 \[
) b! }) ^4 y( _, R! cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
) [4 Q7 r+ ?, a7 T; mset j5 N* H2 i/ q6 x
( j + 1)

' m9 n; d6 Z5 f! F4 ]9 P]
% ^8 a; r1 k* @1 j5 C4 k9 F3 Plet k 30 G2 ?9 j+ X5 l9 R" F, b, f
let power 01 o% u8 G$ a3 M" ?+ P8 S/ R
let local 0
, J' L+ h% j- twhile [k <[trade-record-one-len] of myself]3 P- n2 N) T% O  E% j# T% `+ }
[
8 _8 Y" c: K# \% }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)
; D& a- p: L3 y) [2 @8 r3 Z1 Iset k (k + 1)0 S: x) O; S( k, W
]  ]0 n  g5 W) Z+ r" t  F4 u
set [local-reputation] of myself (local)2 F% I. u( ^! {7 B
end
/ s1 t1 c8 U5 B8 m& o- H7 Q  l: K$ |
( m* U2 B/ {6 u5 bto update-neighbor-total
0 n6 \* \8 b0 o/ [) y9 _1 M: q% a4 k) t6 G" W# [: Z9 H  {3 F  C
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 O* g6 g- N" P6 a+ Q3 ]: M  H

; T+ T) m  `8 {5 b
+ _5 B1 B: D# u2 Z: I7 ]
end) y9 `, b4 W' K6 A) e+ v
/ H" \: g$ o6 o
to update-credibility-ijl - v$ N4 {) }5 m: s3 m# s- \
6 K% |. t$ p/ B
;;
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。
; k: W) ~6 A. T* ?3 \let l 0/ P2 h5 X- ]9 _" a1 g: x7 `) y
while[ l < people ]
/ T; R' }( j' L2 A;;
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
( z. h% M0 V% g  l* I[
) E% E+ t5 u6 \2 |let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" h1 o' ?; g: r( k, X! Eif (trade-record-one-j-l-len > 3)
" ]- c) E* h0 o; Q. h[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) \- X8 B5 z: X( ]; ~4 w
let i 3
/ c, U; z$ e, ?: `' _let sum-time 0* \0 N, @+ ?& K5 c& u+ O
while[i < trade-record-one-len]* M' `; F, }' X% b6 p  K
[$ k. v: m/ `) s( [
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& i2 P: s4 O- oset i
( d8 ^  l* k, I0 G( i + 1)

. F' f9 A  ]: E% l. K# G]2 v! M' |, V: A
let credibility-i-j-l 0: `, ?' i' s% T& t9 J
;;i
评价(jjl的评价)
& m- E; e+ ]0 d0 u  ilet j 3
, G# K; b& `! w) p* clet k 4. b  @- t, D2 ~* t
while[j < trade-record-one-len]
. t3 V/ b+ A$ k3 ^! t% U[
5 [" A0 A1 K; awhile [((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
( \+ X* c8 s; k1 Eset 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)
5 L' L, W7 k% G1 C" j9 Pset j9 h/ r3 z; q3 m
( j + 1)
& @& ^4 `. H6 _; o
]
. i$ M7 o4 Z1 V8 t0 z  Uset [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 ))
: k- w0 j9 {. P, t$ t3 o" E" K! R$ h. I( m. D5 b

: q3 G$ O- @$ f6 C3 ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 r- X/ {6 {4 i+ `
;;
及时更新il的评价质量的评价* w7 `/ x% X1 S4 [! T( D
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 a8 ^- s* P- e+ t, e' pset l (l + 1)
3 `( r( e- R9 Y% d]
2 T% v# j+ H3 _) ^2 c/ u' O% T; V. }7 Bend# Z2 f+ j3 J1 m

9 K) q- F% T. _' z% ato update-credibility-list7 t) {/ T( i3 n3 i9 W
let i 09 H- R$ u: [5 I" z* @% l+ g
while[i < people]" _' Y" k, p4 t  [1 l- T1 m
[
' x) W4 `3 L$ }7 I( Y1 h% S3 [let j 0
  o- Q8 z; N8 P6 y8 @# J7 f1 s4 flet note 0
2 n+ ?5 o* ?8 _% Y) V0 W) y( ~( }, Klet k 0  |# M% i* W2 Y# T: Z
;;
计作出过评价的邻居节点的数目
; {- q3 F. r# Fwhile[j < people]
  ~; p$ F# B. E6 Z1 R. w9 E5 J[
' W/ t5 g* @* r3 J7 p5 d) Jif (item j( [credibility] of turtle (i + 1)) != -1)
+ i. @1 [& o; J;;
判断是否给本turtle的评价质量做出过评价的节点
9 u- B& O& ^5 D0 M6 E[set note (note + item j ([credibility]of turtle (i + 1)))
2 z0 Z* r. {$ L8 t' Y; l;;*(exp (-(people - 2)))/(people - 2))]

8 j4 n/ m1 U4 o6 \, N2 Fset k (k + 1)
2 A8 k" C2 m7 \3 C) D( i4 O]' T- J. t6 K8 C: X! {8 Q* z. k; ~
set j (j + 1), y' m5 D* V$ {; ?( T
]! X6 k7 D# ~4 V) D# \
set note (note *(exp (- (1 / k)))/ k)+ F& x, k$ g( ?3 g0 N) X) ~; k
set credibility-list (replace-item i credibility-list note)( E( l9 t* c/ u* R1 E1 i
set i (i + 1)! r) h4 N7 ~" }4 K+ L: c# ~
]3 I  g( a8 n# v
end
6 j# }" V/ `/ D" k* w- F% M0 {7 |5 `4 E- r+ V
to update-global-reputation-list4 v( }& H* p( c: P# K4 y% k
let j 08 ]: S. V) u4 x
while[j < people]# `% S8 l& M  E8 U% K
[5 e9 W; X( V* [( R- h
let new 0
' r( h- y8 J4 ?; j;;
暂存新的一个全局声誉* T$ W1 k( X, d
let i 0; q( b' ?2 e4 e- h+ h/ h/ p
let sum-money 0
* p# d; h7 Z0 t$ k/ I6 c6 ~let credibility-money 0& X' N9 w3 q" P; u  R8 o# s" B
while [i < people]
2 Y5 `; S- O; j. F; f1 O[$ q3 O4 D1 V. \
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 ^6 S; @( r+ J% |6 N: U( e3 L/ o
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* P! r- f. R& ^4 \# a6 P- ^6 d. Zset i (i + 1)
# ?7 L3 f* a4 I) n' e/ O: z]
1 U0 v* e7 k1 |/ V+ Jlet k 0: }# @: Y3 [- m$ m+ Y0 }
let new1 0  v7 v) Q# _  w0 K
while [k < people]. X0 c4 {9 W( `
[6 `. u& V3 q" {+ ~/ o* e: Y6 P2 P
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)% \1 l2 O: Q  o* F. c
set k (k + 1). J& G$ @& V6 m. N' Z
]
) n) }" ?/ A5 P5 d/ W$ Iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 V. }. ?* N* T3 \
set global-reputation-list (replace-item j global-reputation-list new)
) j% l; [! ^$ j2 ]# {set j (j + 1); n* {- Z* X  L
]
- X- `% \  Z% g6 s) P# mend
+ |+ L* n; x. m( {2 H3 o, W3 b9 P6 m
" n2 G/ e  M" H; U0 f7 L
& T- S* T6 I% f
2 F; U+ q2 X9 u! R  h  Oto get-color
  @& `! L! K% L! J  t& L' M- |3 T
- }  H/ o; r) X7 L( Y# C7 W! T0 vset color blue
6 D$ x5 l) x. p# ^6 x& m
end
; R# W& P5 h/ O( L& ?& i
  C' P. r! J9 m1 }' o& N+ tto poll-class- I0 g: \" r- u& \+ u
end
& l) r! P9 }+ A) E3 k* G
9 {: x/ g* N9 z' H/ f- Cto setup-plot1) z6 T6 D% L$ ^2 }. `4 Y7 y
8 Q9 S- S$ i( r  J
set-current-plot "Trends-of-Local-reputation"

; {8 o- G8 K+ b+ w& A% y3 O; {/ \2 @2 l5 w% q/ b, [8 o
set-plot-x-range 0 xmax
& w  H+ Y( ~$ i1 s( o! k. F: @& M

2 Q) A, b7 W% z3 c/ d% uset-plot-y-range 0.0 ymax

7 m8 d$ W, _& ?1 i! w8 eend
* g' A# w( d* J/ n" [  z$ A/ e7 B& g* s% Y; a  a- O( N1 [
to setup-plot2
5 W4 Q) X- ~; g- ]2 _' J
. Q! V* |9 w; P% P) wset-current-plot "Trends-of-global-reputation"
, T+ g/ D0 G7 s( I
4 E- S: D$ O8 K' [! a
set-plot-x-range 0 xmax
" u) z7 B* V9 Y& E- s  \2 S9 X

  @- _- e! I$ i8 Y$ n5 \! eset-plot-y-range 0.0 ymax

8 j% @, E1 C6 a: Z. vend
% u$ W3 N5 J* Y
3 n9 N1 T- M; _9 d, _: wto setup-plot3
. W4 d' N4 `/ b3 u* g+ x
- J/ E3 Y0 o3 f; b: ?% q5 [3 w, Hset-current-plot "Trends-of-credibility"
8 b$ p! f% g9 c0 {$ V

/ c9 G1 X, I+ Z9 uset-plot-x-range 0 xmax

6 Q- r; V# J2 D" m$ u7 p0 [* O
  ]7 l: [  }3 ?9 e5 Y' W" Z% N; Vset-plot-y-range 0.0 ymax
" ]8 l0 L' c0 x( C( d: y& w
end
! L. U: C& f( T; J: t3 _
, H) a) {/ j7 z# T# Q( S% B$ K. K" Y( ^to do-plots
; r9 F+ `/ u9 d/ s" iset-current-plot "Trends-of-Local-reputation"0 S" r7 p5 T9 r* e6 x/ L+ q1 G6 ]
set-current-plot-pen "Honest service"
) Y. S1 a' ~$ @* H$ E' f. Nend( r4 w& t/ L- G# R3 e0 u
* e6 p: r/ r9 U% P
[ 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.
3 c9 j7 W2 T* B& ]! U! u' e/ u* V$ n2 A1 k3 u1 T. _; O1 B
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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