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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:3 }0 l. c/ G% k
to do-business % M9 f" {& F8 q+ x. l+ Q  D9 h. f* `. @
rt random 360
% _  u6 o) P8 Y$ h7 W fd 16 ?, e' b0 s# R5 z9 d7 z
ifelse(other turtles-here != nobody)[
7 ?. c2 g/ M3 `9 i' {0 L   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.
/ J" N1 v  r+ S6 ^# n7 q* o   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) G$ K5 ^/ B. @: Z
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 l6 Y) o  I" M* Q% U0 ~( ?   set [trade-record-one-len] of self length [trade-record-one] of self+ `1 A$ S4 d& j0 J  N9 o  p0 _( q
   set trade-record-current( list (timer) (random money-upper-limit))/ |5 Y$ e& g; p7 `+ V

  n' t- F1 d8 D) ~, n问题的提示如下:
/ C+ H' r8 F$ D- p3 W+ @( e1 p, B" k% H" M2 Q
error while turtle 50 running OF in procedure DO-BUSINESS
0 k8 f, S* |4 A1 g  called by procedure GO6 M& A9 u+ l4 J' L* Z+ G4 B0 X
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; L! c8 y9 M. \
(halted running of go)! T. J$ m  ^2 T# y5 x) ?
: ^* ]9 n" \! L  i
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~~7 `. E; Z* i. H/ O& |
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" Q* L( [0 `% Y. D+ {% A
globals[
# F* Q, M' K! I- Gxmax
; q7 }( ~. l4 Vymax6 F+ e0 O/ B6 L
global-reputation-list0 l8 W' J3 z1 ^0 b  n1 K0 g* s- ~
; R4 ?3 N2 C- ~2 X9 b
;;
每一个turtle的全局声誉都存在此LIST
2 t) D" s1 m' w& Ucredibility-list
# W& }, s& W$ D; J& k" R;;
每一个turtle的评价可信度
, i& W3 q2 q+ p4 m: K5 H3 q# fhonest-service
# G' p* p& f" a$ p* aunhonest-service6 p# ]0 Z8 k1 }2 L4 x4 `; h
oscillation* b6 A' K# m3 N- l5 t0 N
rand-dynamic
& M2 Z  P* S! p, l]: x0 A* T" c$ s8 s: B* i9 L& [

2 S% }6 S( }  q1 r$ Iturtles-own[
. |- Z& }" U: g; J" h3 qtrade-record-all; E# O! }$ H. G# M2 A! I! _( o
;;a list of lists,
trade-record-one组成) ~: X8 ~% n+ f
trade-record-one
; o5 w( {0 m: \6 X# ]1 z5 V;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ Z# U5 A/ k! u7 Z- b

# d9 T6 ?# ?8 E1 l! t9 _. 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]]
1 D8 |! h5 T& [8 Ttrade-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]
- B2 i1 `  K6 f0 g1 o$ V/ Zcredibility-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
5 W# s/ D, L5 `& Y1 i# n- |neighbor-total, P$ m4 l$ [( x
;;
记录该turtle的邻居节点的数目
$ F8 E, y- \! w7 v2 ?, [trade-time
; _& g- y2 \; h% [3 B. O  R8 p;;
当前发生交易的turtle的交易时间; }( Q; L2 V5 h$ P4 @
appraise-give
5 l/ q# N4 h7 b4 K1 l7 F/ w9 z4 r8 R9 T;;
当前发生交易时给出的评价2 a# |5 {2 e2 N
appraise-receive/ D- ?( T1 H) A7 \, b
;;
当前发生交易时收到的评价
2 y5 l! p5 h% _appraise-time
4 ~# n! q5 V5 r: f;;
当前发生交易时的评价时间
6 \. u) l0 N$ N, X3 p1 \) G9 zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 k9 r5 p% O" b0 A; r# W$ ?trade-times-total  `0 K. M& F! w6 `: Q2 d9 W
;;
与当前turtle的交易总次数1 h) c- P. {2 @# r# Y& _8 R
trade-money-total
9 ^! s# K. ]; V! j* c;;
与当前turtle的交易总金额  W0 z, I* J2 ^3 o3 `9 u% f
local-reputation# A6 R: a: T4 [
global-reputation; [: ~0 ]: c( U/ T  V. t
credibility1 I3 |+ O0 H+ ]* B! F$ u
;;
评价可信度,每次交易后都需要更新3 C( o% a" a+ }9 v8 M
credibility-all/ J8 V2 x" r! V; S( f
;;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 o9 r$ O( L2 r8 g0 d  C" E0 o. \
  W. p4 S8 t' t3 x, t6 F* o;;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
7 u$ B- V8 S) s7 V" H' g4 ~credibility-one
% o' O% c$ z# Y; n;;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' K  N6 E6 g9 }2 G. u# k, ~# c
global-proportion
) l. h/ [' m* u! |customer
, Y! ^$ j, u8 Ecustomer-no
  L: t8 A8 [  P1 |/ L) x" T+ D  z( ?trust-ok
, g$ [# a7 s. @+ O) xtrade-record-one-len;;trade-record-one的长度
- c* p6 X3 S. H3 ?  i' O]' s8 _7 _, `9 M, X, f
; i5 G2 T4 V- }3 K
;;setup procedure/ q8 t6 A  J6 W1 D5 T) m
0 X% x2 X( H) P) P3 ~
to setup7 U& X( N/ q$ t1 r. W

! n& V8 V0 ?' t7 ^ca
  U) I9 t. {3 o) r+ ]. K
6 Y6 p8 u$ t: F; j. B4 g
initialize-settings

+ m, Z. X2 z8 g* a! k4 ]* t5 P( z4 }0 ?) D% q# f+ Z
crt people [setup-turtles]
% W# C  J$ ?! A" g* w; y, |

  @1 D" A4 q1 I  c/ Zreset-timer
3 V! B4 X+ a+ p% `
  Y" I- ]' t" G5 F' A1 W
poll-class
, G7 k" \3 F5 f5 v& x. k; J

+ a2 @3 U! F! N% Asetup-plots
; U5 W; ?- P- Z2 L- g' A5 e! g

* t2 C2 V* J$ ^5 a: ido-plots

) P! |$ l- s  B# d0 }7 r( A3 {end5 i; m% H6 o) M5 U

) [: e' V! l- |, n# M  e8 Qto initialize-settings' q- j8 U' X) q2 [* q# T

% x. z+ v3 w, C8 o4 S! }, _set global-reputation-list []
* b. Y: b! P2 N' u

/ ^+ ]1 ?$ w! ^0 Y* Lset credibility-list n-values people [0.5]

; P$ K- l9 t' e# I' U  E1 p) a
. S) a7 _# x+ Eset honest-service 0
5 C3 b: Q4 l& i( o4 W0 H. [

3 B/ P! v  F5 c5 H: F+ Q% b* R" Q& Zset unhonest-service 0

% m, R  P. H2 ~+ d/ u  \* e6 Y2 _0 x$ B, |& j3 Y
set oscillation 0
' R0 `8 o7 O; e6 H( ]& M% g5 L

3 O6 K) B+ i+ F5 G5 Lset rand-dynamic 0

. ~% [0 @4 C6 Q( n7 o4 jend9 @( i3 f2 G/ X8 r4 y" F0 J8 p

4 m) |5 M# N' i& Sto setup-turtles
; }* I- R9 _$ e7 `6 F  @3 X+ a  [. oset shape "person"
' C) y4 N8 M% Dsetxy random-xcor random-ycor
7 o: Q" d/ O' F3 t0 \- hset trade-record-one [], p+ p% J$ C1 v

5 s# t. u& U4 j+ d1 C3 Tset trade-record-all n-values people [(list (? + 1) 0 0)] 4 K' S) Q6 H; z2 T
. U/ q4 D" r( h; z" j
set trade-record-current []! y( c  {! {( u9 p- G! U9 h  B, r5 S
set credibility-receive []
5 M) g- M1 t  Eset local-reputation 0.5" q$ y& n+ ?  [# w# m2 D
set neighbor-total 0) j$ q) q" ~0 z
set trade-times-total 05 [2 [4 P, j  h; b/ e2 ~
set trade-money-total 0
0 R! O3 V* P' yset customer nobody2 e! s9 J- Y3 ]& T' C4 ?% d
set credibility-all n-values people [creat-credibility]
7 h  |- i9 M2 G! O- j+ a3 Q  Tset credibility n-values people [-1]
: X. @5 {* d  O+ ?5 ]0 jget-color8 t+ i1 x. ]# T: M5 A8 G" o

- T, M" n% H" Yend
4 I% t0 V& }8 E% @* K
' U; Y& T6 x& c& X* J8 Q" Sto-report creat-credibility0 d7 }" G3 X: c. `* s% k6 @" G
report n-values people [0.5]3 d7 U: y& p2 n4 C7 b
end, {( Z) K. K: d" t% C; T* z* V

# ^! h0 m" v; G& X% d4 w9 F2 kto setup-plots
0 Q$ J$ o0 l' x3 T; i/ u
1 k! {7 w# r* ~0 j! D) ?: dset xmax 30
  C) b5 x6 s* F$ s; K( I

* g- V5 X8 v! c; P6 }5 yset ymax 1.0

6 s1 u7 R2 D, S& c% ~
. Z8 d7 G+ P6 e% S2 |3 l7 _- yclear-all-plots
! g  {# Y) b1 Z

7 \* N& U7 y8 {% D1 tsetup-plot1

$ W8 h& K/ H; ~9 P4 O" d1 v5 K+ V( I' I, H, S/ n0 A) H% W4 A
setup-plot2
& B0 m! M9 f2 _
' j( S8 P1 X, N
setup-plot3
7 i5 A- M# `) D0 y6 I) A5 K) u$ v' ]
end
; o1 y2 d" z! S5 x5 X! Z% \+ m) Z* v8 J2 c" ~8 C
;;run time procedures
! B! u1 k0 B' C6 z2 A) B) F3 g
2 j# P# n' ~& E% i# c* qto go
, Z! q1 a5 b& c7 W
# Q( _$ Y+ m/ I* H$ H; f; jask turtles [do-business]
8 V1 o5 d! r6 b. M9 F7 G
end! m$ ~' o$ Q# w0 M. R" D
( n+ E, x9 d5 m; ^6 ~/ u
to do-business + V2 m) @# ]0 q9 }* F0 n7 }
5 V9 c0 k1 Y: W& n' I

  z) m" j' I8 B# j1 \: ert random 360

, z- W2 `0 U/ W3 {- t  F
% j; V, h. r: ?0 z. S; K8 Ffd 1
1 j- b7 Q6 n( b5 {) A
9 a) T/ E1 i1 s$ R* X
ifelse(other turtles-here != nobody)[
! ?) r8 Y/ X3 I

7 {9 g5 g# y* ]- |3 ]* `2 dset customer one-of other turtles-here

  e, n, @- w! M. R; ?1 l& o5 f' H3 s0 t$ q- u
;; set [customer] of customer myself

: G% Z3 u0 B4 _& N8 g
* z. b( j0 E1 F9 E, F% uset [trade-record-one] of self item (([who] of customer) - 1)
8 {8 w% v: E! Q  R7 s- g6 g[trade-record-all]of self
- i7 V+ m( {% ]; [9 {' N6 S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, f% E1 B8 V' J+ f2 }; d
% o3 M/ C3 g! H$ @9 Z1 g
set [trade-record-one] of customer item (([who] of self) - 1)5 i$ t! s/ }, j! o8 @+ d
[trade-record-all]of customer
" G% l" c: c& ?$ ~+ F

" f. N9 ~* Y* @* [8 H8 aset [trade-record-one-len] of self length [trade-record-one] of self
0 j& O; s% \$ N8 f
7 Q2 B& D" ?$ j( t! f  l
set trade-record-current( list (timer) (random money-upper-limit))
% n, D! K3 W$ U4 U) \  |

* j8 p5 R0 Y$ i+ I" Jask self [do-trust]
. B: G2 N# h+ P. C6 o;;
先求ij的信任度0 `& K$ j4 ]5 J( f

& E6 \# D# G! b& P: s% B8 Aif ([trust-ok] of self)
% s1 W7 R. b$ E# u- M;;
根据ij的信任度来决定是否与j进行交易[9 L# u* t8 G! A7 h( L9 H
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 Z# C+ o( M8 b# i5 x8 i

9 f" t" w2 B3 [& q[

) ^- {% W5 p) G0 Y: X8 {5 g- P0 \1 r4 G
do-trade
) d. `( G) T/ d

0 C" {0 ?9 Z( Zupdate-credibility-ijl

9 B2 @1 H5 I6 U+ E2 ?5 s& x, Y  G
2 v5 ^5 `3 r' [, Z. ]0 T, K& Tupdate-credibility-list
  l; M+ I6 {0 F* y: k
  c! o2 I0 ^8 B' K. I4 ?

- U; }. G3 D% a0 `. x" t/ @) [update-global-reputation-list
* r) Q$ b1 W8 s1 b6 L
; e5 U  }3 _' L6 Y1 Z9 |! s' l
poll-class
4 [! X. x, _  m+ u' O. T, X5 x, z

- L& A* S- ]# V) {2 }, bget-color
/ g7 X- \8 X; Q2 o* ]9 Q
6 E$ L7 Q! y% _+ D) j: h5 L8 V
]]- W4 P* o, [# E: B' M. W4 s

0 [1 H; E. X7 q8 a$ S7 V+ _;;
如果所得的信任度满足条件,则进行交易
- Q/ w/ K, F. D. k% y7 |3 P
! [& M$ k# O" g: @/ B1 w! J1 P[

9 p) Z3 F; H7 X/ H: p
1 Q# e- _. `" crt random 360
! n5 E5 U+ }8 s
2 ?' y  [% d8 t: ?. T( A
fd 1

" W, N- b! _. p8 K, t
! K. D* [' S8 J& {4 z]

) |. A2 }) [9 u+ w
0 L8 ~0 S( _$ f' f# v* vend

8 g! W' S0 D3 P, E! M( s
' M  Z; y1 v# h3 G8 A( L5 @  t- Jto do-trust ; C2 F+ \! w" W8 f2 b4 `
set trust-ok False: r! \3 p7 ?2 Z. ?+ a% W
0 H9 e5 F: q- F! t: ^0 w; M& C0 ]. w

/ i$ [, S7 S: q* W+ N) ?& h4 q6 wlet max-trade-times 0
+ G/ p; \: C# E/ h+ I+ @4 cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 D8 }& l  W+ v% M
let max-trade-money 0
  t" G& c( `% |' K$ ~! i( y1 l5 ], Dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ }6 c  ^' m/ g9 n0 Z/ D
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; `( H+ w5 t4 I- M  X; {$ R& u" t0 J, R0 q( h2 w& P

2 s0 y1 e: g! i" w! y: |get-global-proportion+ p2 m0 H' B6 ^8 J% c0 y
let trust-value
, p* n$ \" s  p4 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)

7 N  S0 g) u, C: L9 dif(trust-value > trade-trust-value)- h% v" w5 _( a2 C. d) ^
[set trust-ok true]
& P6 G. `6 V$ y# i, t3 N9 Send. b/ K, n* i3 {7 t  c

" C+ z3 D4 B, q2 A2 tto get-global-proportion# s6 X, D" N3 Q; _9 F* }+ W/ L% e4 u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% k" v1 a, T( n9 J# d& \0 C
[set global-proportion 0]
% S7 }. ?" L& F2 S, S' {[let i 0
1 f" y# S8 J1 P' K* n2 D( z" i  Nlet sum-money 0
, K* p% H2 u$ lwhile[ i < people]
; X5 z8 r' H5 }5 F6 R: F[4 N1 [8 C4 o: t9 A2 Z$ g) z
if( length (item i1 q' m( R* T' |( v7 R, H
[trade-record-all] of customer) > 3 )

; X: p' |9 z+ U: T[
) V8 x( U1 {! p% O  s( h4 v9 K( S4 Mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ a( K$ M! m3 U' R$ F: X
]: f' x' s' a% ^5 i1 V, V0 z8 Q
]
" L! X5 G( d9 L) \( {let j 0
  `* G5 C1 X2 S+ }let note 0: g1 r* ]: t3 S% L* Y2 i
while[ j < people]
( v) R$ z3 w+ ]. `! g, A: {[$ Y5 K% T) ?2 ?& O# t
if( length (item i2 w% L& E, _2 S8 j2 n2 M9 Z: W
[trade-record-all] of customer) > 3 )
2 V6 x! Q; u* d4 s, O5 e
[7 P! R6 L5 P4 C
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 _3 [, M% U, L2 W[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 a) c. v8 z0 U, A" K[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], E3 ?9 m3 l! n  z' g
]
8 S/ v; O( x4 b8 x+ h1 K]; d. C) `( f1 o' j5 d9 n; b( |9 L
set global-proportion note  X' M1 h* Q4 Q4 A7 @% ]# L
]
# s: N  I  ~5 Kend8 h3 }8 B8 x! c6 Z1 M1 ~1 R

- x, ^/ A" f  _+ i" y; ato do-trade* B; e7 {0 }, r' G, F7 A3 l1 C  d
;;
这个过程实际上是给双方作出评价的过程% O  d$ h% i+ W+ b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 s) o) I$ E  d; g' [: G# i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  H8 j) \' ?  b" {, k0 O$ Qset trade-record-current lput(timer) trade-record-current
1 X2 H8 t6 A7 N, @: x;;
评价时间2 Y- }/ F( n8 Y4 t
ask myself [$ Y8 @* D0 U8 w/ A8 O5 }, H
update-local-reputation3 D' P: i$ T: g* Q1 x3 f; H
set trade-record-current lput([local-reputation] of myself) trade-record-current3 ^" B# i2 t; u+ ?! \5 c7 a: L
]* i' p8 d: n+ p0 I8 Z+ ^. _
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" T! ?5 C  v( S: F; S" N! v
;;
将此次交易的记录加入到trade-record-one
3 h  s# f5 @2 O' }3 H  Kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" c& n, o& O, {1 g+ r' \let note (item 2 trade-record-current ); {2 ]: _; x, w$ k0 w. I
set trade-record-current0 o  ]: L% L5 S; H2 F
(replace-item 2 trade-record-current (item 3 trade-record-current))

  e+ i* ^3 l0 p. E  E9 Gset trade-record-current
- `9 v+ k. {# A8 }8 N, o(replace-item 3 trade-record-current note)( ]& \! B  ?' B8 g. [0 y9 |

: u6 p' d* H1 S: N0 t

7 G* N8 e/ u4 B# Y1 xask customer [  u! J. d: m! x" b5 S+ g
update-local-reputation8 a/ L% q) S1 `7 ^
set trade-record-current$ j/ [1 S' x: A. [# `; O2 R+ A
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# n0 q4 q8 x" M- {) l* k
]* |1 w' p) S# R: Q: H+ }% \3 e

+ |  o& G* z! w
# |% J8 Y$ S5 R
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, ]' ~2 V1 I3 w. B- M! f, H! W

8 Y# C& p6 `9 P- Y9 _6 wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 Z6 H$ x* f) m$ {5 @* y;;
将此次交易的记录加入到customertrade-record-all
' a3 G, a+ r1 Yend
9 f+ `7 w( J' P) N7 U' f8 e+ E# J1 c$ O) U+ f; W: p* \
to update-local-reputation
0 I5 O0 Y! e# U) K2 q; nset [trade-record-one-len] of myself length [trade-record-one] of myself
% K7 Q" y; F* T- W$ E" z
* K9 C8 w3 J/ `# z6 k3 {% M4 O5 n& a$ ?! D! ?4 U; x5 K
;;if [trade-record-one-len] of myself > 3

) ]' G3 b+ d1 H* y1 j  ]update-neighbor-total! a1 B) `% o# b1 j
;;
更新邻居节点的数目,在此进行4 P% e* r* x# g. i. _
let i 3
( Y3 \, y% B' alet sum-time 0( B; V3 C* u( j2 N& F9 P( \
while[i < [trade-record-one-len] of myself]
+ A$ m5 ^& d! b& \4 a' B# I' {8 I[
  A8 c% j; M$ S9 B9 Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ C, v6 C% k- D) W, ^0 cset i; [" d7 _& p$ X! w9 X+ Y$ s
( i + 1)
$ V: _5 f4 u; q( Q) u
]
( J8 f, `* ~7 w6 q. [% O6 H6 {let j 3
  v! H" a& h0 N, E* l. `' elet sum-money 0, u1 B" f2 L5 h2 {
while[j < [trade-record-one-len] of myself]
" g* q4 E% A- J1 ]5 z: P4 s" L[+ ~, K5 I0 T0 H
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)6 n3 p8 s1 V6 D1 H
set j
! }6 A+ [2 D: g' b& M( j + 1)

8 y7 s5 l' ^3 E0 j- t]5 h5 X: A4 Z; n' w2 K; V2 V4 m3 E
let k 3
( E: R* p* e! w# ]% k% G6 Llet power 0% L8 [1 k& A% E, K
let local 0
4 k! M7 ^% v( U/ Kwhile [k <[trade-record-one-len] of myself]
8 U, w/ s& R% T% [3 ?/ Z7 u0 g[6 e7 B+ q. i9 K8 ]- v+ g4 y, 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) R3 h, S" U, R% y* j9 ~& N# Tset k (k + 1): Q- c( ]7 s0 }/ `# r  \& E$ U. b. }  A
]
! c" h2 O$ g9 R  V' a8 q8 xset [local-reputation] of myself (local)( e* R5 G0 S9 E/ W
end
4 D* f+ M1 B$ W6 I& L4 `7 B! X! Y8 t# R( _" x9 B8 @
to update-neighbor-total. J8 k0 j- {! L' G4 E

6 p5 T  h) a- u' mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 y* y; w# ^0 u3 V9 \8 Z6 p

! |3 i) h2 m2 c

2 B* l* H; v. K: y- s& Vend1 G1 j) _1 g7 S! ]

1 n! E$ I0 a" [- _$ xto update-credibility-ijl : j1 h9 w/ R8 J2 H5 M' l( y, m2 v
) n; D( u9 K" T/ r& G
;;
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。2 z  w, K1 s1 V+ x' V- B8 Z4 Y2 j
let l 06 D" P5 [8 e# ^  b  H) O1 A) e
while[ l < people ]; a: b3 }( O9 L3 n- N
;;
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/ A3 l* f4 |1 ]7 g5 o# o5 }
[6 l6 c( D1 s% p- @- L0 x
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( K8 J  u4 V' o1 {* J# G5 Nif (trade-record-one-j-l-len > 3)
; k1 {' V+ Y( e8 O/ Y7 n[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) Z! @" x6 @- o$ I0 D
let i 3
1 Q% u# l& o8 o8 slet sum-time 0
- V# C) z8 {4 H6 l1 ^' D  T# e9 {! Jwhile[i < trade-record-one-len]
$ u' \* k, |8 A, J/ u' s/ T* O' v' }3 h[/ z, S9 `6 ~- \# m7 N/ x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: ]9 ^% g; u: z  m( C/ d% d+ Sset i: \! z+ l( \4 i
( i + 1)
  ?2 X! H, Q2 k. G, \/ u" n% U
]- C( h! r5 G- ~" X
let credibility-i-j-l 0
, {4 [( ^- S0 ?7 c! Y' |;;i
评价(jjl的评价)! ?, m3 P* g, I# W
let j 38 O4 s% s( _2 \. s6 L( g& ]
let k 4
4 N: g$ G2 G+ e2 Owhile[j < trade-record-one-len]% z' e# P" Y9 B  t1 ~
[
! A$ }+ X  s7 n/ L4 }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- D; ?' g5 _& w# 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)
9 N" I* G% T* J; \2 U* kset j
! ]( u' y5 _! J- U& [/ I0 K. q( j + 1)

3 W0 h) ^/ X6 I6 T, M# O6 a]8 j: `' B: d5 \  F
set [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 ))) V% X4 B+ u/ `+ |( U0 U0 W

! D# {5 a2 E" {/ a5 [  S
$ F7 c9 ~, b# O/ o* X" `2 y% Z3 h
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 N" f9 H4 G. n$ C;;
及时更新il的评价质量的评价' u* {  V! y% }$ a6 d" s9 P" ?8 [
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 _" C/ \& ~5 q6 Tset l (l + 1)1 L- A2 M9 t! n" o+ V4 _5 s  S8 Q
]
9 \5 s) S, w  Q* ?end6 J0 I. ^6 H0 i" {- `

$ @- ~2 A( K* v. A) o  {1 k0 oto update-credibility-list
, w7 z+ F9 d6 ~- g/ C4 F/ {let i 0
3 l# |3 W* n0 \$ ?while[i < people]
$ y6 W; j/ A3 D+ Z* D5 v1 `  J[* f, T/ ^' R0 _  M: W
let j 0, D2 z6 L( n2 r) N
let note 0
% }, q- E7 U: I7 }/ H9 rlet k 02 V* L' r4 ^+ b& s% g/ C
;;
计作出过评价的邻居节点的数目7 s/ S5 \& L" u; ?0 }( w7 i
while[j < people]% c( r- j4 c4 \7 Z$ {, R
[
& t2 c% e( ?! j( p1 e4 ]0 w6 iif (item j( [credibility] of turtle (i + 1)) != -1)
- ~7 H/ s3 r& g;;
判断是否给本turtle的评价质量做出过评价的节点
! e; W+ R% K9 h2 M[set note (note + item j ([credibility]of turtle (i + 1))): ]- o- U1 w) b5 Q, o  j
;;*(exp (-(people - 2)))/(people - 2))]
# \. G) H% h8 R, r% u9 S8 e
set k (k + 1)6 z# |. j2 N2 e8 l( k& C. ?/ c; l
]
0 s3 J/ J3 Y  e# S* x$ y8 s0 V6 q& vset j (j + 1)! M; B9 I3 s0 C
]$ G; r  T& u) Y" T) x
set note (note *(exp (- (1 / k)))/ k)" j# W0 ~" B2 \9 L
set credibility-list (replace-item i credibility-list note)
5 \8 J& @, |9 u5 ~4 wset i (i + 1): M- \3 k0 f! X$ g7 ?5 j
]
! {. X1 y& G1 S+ C8 k0 P5 k, Qend, C$ ^8 M/ e  x3 J8 P( E7 [

7 a) U) m! D/ [( Xto update-global-reputation-list5 g/ C& [: X& D; A! h
let j 0
, n$ n* x( \0 [8 S+ wwhile[j < people]; h5 T; e0 L) w, T& c( z
[# Q+ l) d2 r8 \- V7 V
let new 0
; @% N! h# E9 I;;
暂存新的一个全局声誉) P9 Y" L6 [+ _8 Z+ R, t3 c
let i 0: B3 l4 e+ k, e1 I. d, Q0 [6 T' ?
let sum-money 0- g, L1 I0 J& e
let credibility-money 07 _- i: U" s3 ?
while [i < people]
0 ?$ C! X8 I* T2 A[
2 V" o0 N- q  S6 hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* y3 X, R2 L8 ?( o; a1 ~8 U
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 t  N) b, l" k6 j- ~+ }1 iset i (i + 1)8 ]) c+ {* B. o
]; f) t; G. v! ~9 a: L3 `8 c
let k 0
7 p9 r4 I0 _! I, E; Mlet new1 0: `- m1 l; s8 \8 V
while [k < people]
# M7 e( E! m/ N( }! S/ Y. S. V[; o2 V, u+ H* \6 O
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)
* J* o2 {; f9 L0 F9 s. H) Rset k (k + 1)' S8 |" i; `+ U" P, G. S
]- ~% O  ^: f" g/ b& o
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 ~  W* I+ D7 Y% u5 U( ~set global-reputation-list (replace-item j global-reputation-list new); `7 w0 |* h: W, o4 C. r9 F: N( n
set j (j + 1)
  g0 I5 X1 C7 C* \6 o/ b# Q]) O; {0 D# F' \7 D2 y* r
end( I. ]/ J/ _8 |7 M
1 P0 ~" @. `* F) i$ Q3 @6 A: t$ @
! E- l$ p4 b9 ?$ [7 Y, v( j! E3 h

5 q0 H5 k. B3 ito get-color. N. q1 `* c% R* s: M+ o+ `4 k
/ b" L0 }8 T" L  s- F( v
set color blue

3 Q% J3 C& L& p; p/ ?3 e# Fend- G; @6 m4 R3 g% |8 j% K& y

) Z2 o8 i9 v, c. u" O* tto poll-class3 u- W7 R$ x* e
end
3 I% ^  ~; N5 J- Q6 i2 g
2 e0 C- ~+ N) q' D+ sto setup-plot1% Z( Y+ I! F& c- s$ `5 m8 A

" X1 {- E" h, \2 f# i# j- Wset-current-plot "Trends-of-Local-reputation"

! a" I7 l9 y1 ]: x7 |' V/ q- j" ~8 y/ J" ]+ T
set-plot-x-range 0 xmax

7 B( T& X$ ~2 f; u/ h% @1 U, Q2 ~1 Q& \9 |% Z+ j
set-plot-y-range 0.0 ymax

! i' L* g) B. w4 [5 N( n3 E; }end
# k) c$ }0 i4 y# O* ~
: O% R6 b/ `, qto setup-plot2* F% J1 q) V7 [1 l7 B1 F. n
  F6 V4 ?8 o6 y' ^9 y
set-current-plot "Trends-of-global-reputation"
' O' ?' e- [" p
8 Z3 L! d- C; T; T" S, _
set-plot-x-range 0 xmax
' k0 h: y" K5 F  P1 q# O6 Z  }
7 y: t4 w/ _) {  u& m; B
set-plot-y-range 0.0 ymax
3 ?9 c- d: g" S3 ]! I
end7 B/ c0 [" e2 K% t# p" {8 X
, C5 A2 J1 [& m$ X7 I- ~
to setup-plot3
/ Q$ l$ e3 w0 T& D9 g* `* K9 n: }! B( r4 V" x
set-current-plot "Trends-of-credibility"

5 i1 X6 Q9 h2 r- U
' c" l9 z2 m: }; ]set-plot-x-range 0 xmax
; n6 k* X3 ^4 p! q8 e) a

* g* f" v8 v; s2 w6 ~* N5 \- Wset-plot-y-range 0.0 ymax

; W1 r: m2 [2 b' _) X' K3 T. T8 Rend
, A& T4 S) h# A- d) w/ F0 Q, D3 [* a1 ]* i; h/ k* }
to do-plots: q: V% |* a+ y* ^* ^
set-current-plot "Trends-of-Local-reputation"9 E( z+ ^, Y' N$ O# I! Q) z$ F
set-current-plot-pen "Honest service"0 I0 F, t* M; _0 k+ [; L
end
$ b/ Z" L8 L5 K, I
" F5 N9 y" a  E% B2 v4 U[ 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.
, J' [8 W% C% f0 l9 v0 |3 j& I# z6 l2 Z6 n; q
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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