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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:
+ c; U& Q* @$ i  r* A: J- Eto do-business 8 X8 Z$ Z3 z* W9 U0 U* Q9 S
rt random 3608 V1 c( g2 Z* B# W( Y
fd 1
; r  k4 C% _: ]  Z- v( t" s4 Q2 l ifelse(other turtles-here != nobody)[9 H- N# ?9 }, z
   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.) o9 J8 e  Y. S# N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ ~' _- ^1 I3 ]" H' @6 Y* R: L) z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 U8 w0 H. Y: Q! @/ v& O. D& d
   set [trade-record-one-len] of self length [trade-record-one] of self4 U' U' y, y- K5 X- c* c
   set trade-record-current( list (timer) (random money-upper-limit))
# w4 Y. n/ a- p' D' b. b
3 z+ G7 c8 O* a/ s# |问题的提示如下:9 \$ w. R) U0 [* u; A' Z2 ?
6 t6 k- o' u1 |7 r: ~$ P$ L
error while turtle 50 running OF in procedure DO-BUSINESS5 R3 R. m. E  ?; M3 \
  called by procedure GO
: M, y+ U2 z* z( H: R( oOF expected input to be a turtle agentset or turtle but got NOBODY instead.% J; _, K! B$ y: b
(halted running of go)
( S! s" s' D8 i+ w6 t
4 J5 \$ K2 P- j4 u( O7 D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~~( Z  J5 x* |* O7 l8 y; 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
  ]) P, n: p0 `9 k" Qglobals[. I! @% V8 M1 q  r5 j
xmax+ M# I1 E, ?5 u1 j
ymax
2 F5 ]  h6 z9 ~/ sglobal-reputation-list
& g! Z0 S& B: G$ ]$ m$ l0 B
1 @- ]$ I4 _3 S$ Q7 K- ^6 @2 ];;
每一个turtle的全局声誉都存在此LIST9 l3 x6 T, h; y
credibility-list1 g% S. e$ q# |# D% m
;;
每一个turtle的评价可信度
" L; @$ A; \0 F/ N4 |, i1 ~honest-service
1 K$ L% U) L, v5 L, @, vunhonest-service' Z0 N' |# q5 J2 E$ r7 _& K8 h
oscillation# ^' V" r7 w% c2 `
rand-dynamic% `- Q- B% J1 x1 Z5 y
]
8 P- q) H' @. f8 T1 N- j" c+ L5 d$ c& j! p  {
turtles-own[5 `$ `- R# V3 A( H* D! G
trade-record-all
* @0 r) d/ T6 H, Q1 |" C* h6 ^;;a list of lists,
trade-record-one组成' ~. g0 k3 K: `% T. |
trade-record-one$ ]& q9 t: k' N4 x6 s6 y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* v" o3 `8 j7 v' o6 _7 o% U. I* e, i

( L- B0 _/ N  ~& K# R8 X/ \) };;[
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]]/ Z" t6 _1 p8 b2 y1 I
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]
: Q) T1 Z1 B  d. q) T- w; tcredibility-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 t7 [- z; I4 @0 y: {6 W( Sneighbor-total
6 R  p4 S4 ?. P% }, \% Y;;
记录该turtle的邻居节点的数目, L# I- w) R4 l* V$ }0 O
trade-time
1 \. R1 p6 i0 c. s% E;;
当前发生交易的turtle的交易时间0 j. h& M+ E: t  ?7 I
appraise-give2 ~3 H3 {. Z" J$ O
;;
当前发生交易时给出的评价
, t! q1 S5 \0 A# }- _" C) |; m6 \appraise-receive, b9 k. e7 N8 e% J3 \; H6 d  A
;;
当前发生交易时收到的评价
( C% B: G: y# T  c* Sappraise-time# _" I' z( H; O0 F. [; N
;;
当前发生交易时的评价时间
  ~& p+ M1 a! P$ h" o. |& o6 e. dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 \5 E0 H0 q7 Y0 n' L0 i% Jtrade-times-total6 T" G" W: P9 a
;;
与当前turtle的交易总次数
/ k3 l  @$ M+ M# F' Xtrade-money-total
7 s4 `9 t! E3 a/ H+ Y" G;;
与当前turtle的交易总金额
+ c" |* w! [2 K+ @- D( m: Z- k1 G* Xlocal-reputation# r9 _' E9 B0 P+ o9 I
global-reputation
  |- ^: j6 k8 d6 zcredibility
7 c1 b  A; {( t, x- z;;
评价可信度,每次交易后都需要更新) U2 `' t6 {2 w3 Z" l
credibility-all
; Q4 C+ ~/ v3 J3 d- A& N;;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& o3 O* w" H- |% z, W9 l
7 [  t6 V2 e  w- Q7 c0 s
;;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/ x' E* z. N- X# ^
credibility-one% U# r* O1 O3 d; 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people
# d6 a$ J' w; G8 i0 Y. v# H5 n5 Mglobal-proportion
# u/ W3 W' ~6 r* T! j9 G5 u) v. Ecustomer
/ `3 |; @7 v) }7 ccustomer-no" F% x5 V% s# o! K! v
trust-ok( M' w8 c# U' [' h1 `
trade-record-one-len;;trade-record-one的长度3 U9 c) K6 O% o( Z; V, C
]
3 G* F3 j9 e, c1 N" \
4 }' x  V" w- D+ A;;setup procedure
0 r, B! E$ ~- x& m0 b- g$ g' z, A, @1 V# T* h
to setup: g6 \1 N7 Q  ~/ _) i: D

$ \, _7 S* D0 m2 ^" p3 Aca

  N6 f$ j" L: t( |1 }2 \
/ v- p6 s0 x' U# y" U- q6 l3 }6 Linitialize-settings

- w7 d0 w6 N% U4 _% T9 y5 ?: L
; u* L# w: d/ k% f3 ycrt people [setup-turtles]
* ^$ A" ^/ H/ g$ m
; I* `+ e) N0 P* O7 `6 |! q
reset-timer
* b, L8 \7 Z- }

5 |2 s* _# a# Ppoll-class
4 C2 @# p3 P, x& D" I5 \: @
( i- b; s4 d4 N" i4 l
setup-plots
. d# m- ^6 ]* f1 x

1 F" A$ b$ N- x3 K6 P  V. _; [! {do-plots
! W* q  s# P6 h. G& |$ L$ |6 o8 A
end/ v6 v0 q* _1 c/ F! E

4 D3 D) X4 J) C+ r# O. Z" Hto initialize-settings
% v1 s& c0 p* y( f' Z, m# C5 L2 O5 ]1 H
set global-reputation-list []

9 p6 t- _9 P, ^: L, [: z
2 [0 M2 t: l  x4 u4 M3 V. I1 Rset credibility-list n-values people [0.5]

$ i8 w/ ?4 s; ]( X7 ?* [: Q2 e8 b$ ^2 D8 \0 F
set honest-service 0
" S7 b, u& v, Q# \: ~6 Z
/ b6 f0 g' h4 ?2 k
set unhonest-service 0
. D" Z, ]  t. b  q. ?( r3 _
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set oscillation 0

, b- a; j# ~) P/ P& G& F$ q! g. G" q  N& R, P0 ~
set rand-dynamic 0
/ }+ {7 O( y. m: O5 d- V
end
/ G( U& N5 o( k# m/ F4 i4 Q) T8 \1 P3 Z0 G, W7 z; R
to setup-turtles " `( Q" y, s" @7 ~- k3 Y
set shape "person"
9 y, J0 B  r2 [0 ~setxy random-xcor random-ycor
$ m) W! x0 f5 M" |; kset trade-record-one []' E; I; \$ ~7 W4 j! t
! G& y6 d0 Z& F8 g5 B7 q
set trade-record-all n-values people [(list (? + 1) 0 0)]
. F% L' k, f4 L& h

6 D0 y0 s8 N( K0 u2 u2 x- O5 Wset trade-record-current []
' a0 g' ], x# |. X4 cset credibility-receive []
$ F6 w7 k0 j' d( k2 Pset local-reputation 0.5
! J) m, \/ H5 X  w3 q$ lset neighbor-total 0- d8 g3 B; z- X
set trade-times-total 08 t+ T$ Q' B  ]  M
set trade-money-total 0
$ S7 }1 b& `2 ^/ K% Xset customer nobody- j1 Q! I2 d# H! Y
set credibility-all n-values people [creat-credibility]( W+ C$ T% v! m4 W0 `& b0 i
set credibility n-values people [-1]
* C# R5 A5 p9 X; k# l! s& J( Rget-color5 l: o# [2 `9 z# W, h

5 d  J: }$ A: R, pend8 P: Y4 u- f( P5 P5 I7 d; B& C

9 H( r6 m4 O/ [% C8 lto-report creat-credibility
+ {; K( }  S6 Mreport n-values people [0.5]+ p% _# e4 p) J0 f
end
7 }7 c3 p2 g7 h% Z1 f' c! |$ V0 k/ s7 ]3 }
to setup-plots
& t8 ]0 [" k0 f1 O2 I/ v9 ]
8 g1 G$ K( W( k- y+ nset xmax 30

/ z$ Y5 g& b) R+ [$ \. p' w! Z
1 F0 G# [+ d- ~! |1 k, m& f8 V" Bset ymax 1.0
1 @) P  `8 s& `8 h+ U: \7 G
; @+ [) Z; h: e# I/ \  U
clear-all-plots
. g/ ?+ T+ J8 d0 @
4 Q# s" q( o" _* Z- H5 \# x$ r
setup-plot1
; i  Q- f. m1 I- p4 F

  K( ?" l5 ?% Z1 ?5 W/ e* isetup-plot2
# c7 h$ Q- `9 P8 A8 g
. e8 X" @/ i5 ~4 _. T; l* X# O
setup-plot3

9 ?0 c. a2 r! c' ~1 J6 j+ Uend* a- B7 w3 Y) H: |8 V$ B4 W
! X# H2 P- c7 c) ?0 U1 N
;;run time procedures2 ?: `! Y( r6 m$ \8 x- c* p3 t8 A
* U7 f; a( e! z
to go
" T7 C( Y3 H  P5 @" V" X* L9 L5 v( H8 t# c
ask turtles [do-business]

% K3 D9 ]% g5 Z( L$ Hend
$ i0 S; @& H9 |+ I; p' W! |! I* y4 D0 P+ r  ^6 x
to do-business ; q6 M9 i9 _4 M" F; P! G  P
# D2 I" x+ q" ~" O

: H% [5 v1 m- R4 Y2 p7 [" yrt random 360
, R3 O  _1 j2 F
7 Z5 \: O2 H4 ^9 X+ L* ?8 ?7 r
fd 1
9 h" b" h) S7 ~  b

3 Q+ B( T6 ^" u- Z! ^" A5 j/ yifelse(other turtles-here != nobody)[
, u+ I# I1 w! b1 L, N5 u7 ^

# `4 e) s$ t4 W# I2 D* Yset customer one-of other turtles-here
# `; s4 i" a7 i7 L

/ N/ x5 |% N) w9 @5 n2 h;; set [customer] of customer myself

9 Y. B: ]% ~9 }, q: W4 X, T- R4 g  c7 q$ X; ~5 F, |
set [trade-record-one] of self item (([who] of customer) - 1)4 s- U6 K* e* Z% R% y$ X/ u
[trade-record-all]of self
. d1 ]) }% X9 R: Y3 Z1 J- Y+ S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  w* h2 B) J+ A) f: p, c3 ~8 @+ Q6 k+ [8 ?. _
set [trade-record-one] of customer item (([who] of self) - 1)0 S& c! q4 r2 X/ E5 `% |$ s% E6 W# B
[trade-record-all]of customer
& ?* l! C6 L0 k+ [
  M- V1 U" ~0 x* z' N( w0 o% A" q
set [trade-record-one-len] of self length [trade-record-one] of self

9 c) _5 ~& y. |+ u1 b
) b5 p: w# m5 L" \* ~0 Jset trade-record-current( list (timer) (random money-upper-limit))

" n  C4 n+ l. _4 o4 ?* j" k& ~( S; n" K4 k6 `- ~. C
ask self [do-trust]9 j' i8 ~+ N( X; Q! d2 F
;;
先求ij的信任度/ h7 r* Q1 u4 a5 ^1 ]% `4 x3 `

) V" F/ |: Y5 ], C" C$ Xif ([trust-ok] of self)! e$ `5 G7 D3 z# _5 U
;;
根据ij的信任度来决定是否与j进行交易[
: ?& h6 i) ~# e4 X; I, xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 l/ d- f6 s0 s. x8 M  u. l3 k4 ^

3 h% ]* g" h2 }, x# M2 A/ ][

, _  c( \" e* [/ k+ Y3 y0 m; s5 g# w, _: |1 E6 u
do-trade
/ T- Q/ s5 ^7 P0 N

% g! H1 y) U- |% U" b( h9 I) P, hupdate-credibility-ijl

5 N. e1 H! K1 w5 e6 I/ I! N# N! x
, v( ?) t& h1 ]+ X; G" y( mupdate-credibility-list: U4 m* Z0 {: G# L2 s

" L. l7 V9 \* D7 w
* r1 i/ G6 ^0 n1 d$ Nupdate-global-reputation-list

# i& x  z2 }* g' K  b4 Y. X8 C% f8 l$ p3 j
poll-class

9 Q7 y( Z, a" J; j; G' p9 c
; S- }8 ?& V; t( {' Tget-color

# a1 y: n) e  m1 Q# T" T3 n9 @1 e0 U5 @  ], @& g4 |7 f
]]  Y$ F2 I* {" P+ K# N; l- @4 ^. t8 G
# d/ A/ P) ?. a. u8 H& k* b
;;
如果所得的信任度满足条件,则进行交易
2 M) b1 m+ N' B& p' e
; x/ I1 u0 m4 ?9 }[

5 G# s9 Z7 S. K* ]3 }) _% y; M5 P; u6 ]% n( G  I
rt random 360
& c+ q3 g  H, q# ?% A& ^  t  C' |

4 x9 k$ u) o) k6 q( s& G2 j$ efd 1

1 L  v) }1 `2 D' ?2 C  @: p9 B6 J% }- ?+ N& k# L
]

- R. H* Z0 l/ i9 E9 H/ q4 u0 z8 z& Q
end
; G3 f. s' e4 d( A

6 ]4 `6 ~8 a* N, b; N! }, _to do-trust
$ `# v: ~% v6 t8 w% p, K/ c: G0 u- uset trust-ok False
" z, Z! A2 f1 k( B( c- T
1 g7 p  X# W+ d3 o1 a
4 N: u9 R) e# n# _
let max-trade-times 0% z/ A- X7 Z7 c% g8 G$ F
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 O' R4 X2 P" \1 z
let max-trade-money 0, z1 r& \0 U/ G5 H$ B: f6 y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! i+ a$ I* l4 t
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 z% P7 ]: D1 a9 i& U

% P  L) C: [$ T* [% N5 {

6 m8 J% S0 Y) J, N3 J. sget-global-proportion  P; }0 B1 p) x/ L  u# s
let trust-value' q8 j% u+ }1 d' X3 r8 d# [
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)
% N: b3 _$ V' f8 R
if(trust-value > trade-trust-value)
7 ^9 y& s% q5 E) g. V[set trust-ok true]
, `1 D6 s  l. _/ q* t# r$ [end
% t7 @3 G$ C0 f/ S/ [8 o' O# c" c& _" m) s* U
to get-global-proportion
( g% r: ~5 K; _5 j$ Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- x& c( Z) y# f
[set global-proportion 0]7 N$ L/ S6 d1 n2 z0 C6 U& _. A
[let i 0( w( \$ V/ Q9 X/ [! i3 _
let sum-money 0
2 U- a. `3 p* D4 |& Pwhile[ i < people]$ L; i! _* F, Y% x  Q
[
* i$ o1 `: U# E  \$ r) y6 S; q  wif( length (item i
5 u3 M  E5 T' }[trade-record-all] of customer) > 3 )
( |1 z' D5 M' P- b  {
[
* y2 m6 J$ _) O0 u6 u8 k+ P9 {: ^8 ~1 Xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 s- f0 y/ z  D/ c& I( Y' \# D% e
]
! w8 v# z7 I1 J* R9 G8 n]5 [7 b* R3 w( z7 o. Y
let j 0
0 l# V& N9 a8 X0 I% Z& _6 g9 olet note 04 f* l$ x3 U5 a
while[ j < people]
; A6 }% l3 m7 p4 F[
6 |( U, o+ x( I) yif( length (item i. \1 o; R+ ^7 C2 M- \8 U
[trade-record-all] of customer) > 3 )
' I3 ^3 Y& y' W- L) ]+ u( Z/ _- J8 ^. N
[
! v! y% j! J: s. o- bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* e% L5 F  w1 {) G[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 c- h: u9 u  g
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  C4 W8 p3 y$ L' j
]0 f% u( g: f/ U  b2 ~1 S( M6 n" a
]
, A8 n) u5 N% ^set global-proportion note
3 C$ G# O$ Z+ r; ]" R/ h& _+ J]! I4 e( G6 L/ F1 T/ F
end2 B4 I$ z1 }- |  c( r" o

% u+ a7 \4 z: P  R/ Fto do-trade/ A6 K* |6 d! G5 E6 H9 `
;;
这个过程实际上是给双方作出评价的过程
: p! u# |, W0 a) bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  `4 J' i+ c. R( Y1 ~! Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- r5 H8 d9 W. d" i2 k+ e
set trade-record-current lput(timer) trade-record-current
5 l& R0 i5 N5 ^& X* z5 N% ];;
评价时间
5 l" g* v. o# O$ X! C/ d& h! uask myself [
, J! n  }! A8 q9 J5 q) M8 n7 ^update-local-reputation
4 L% }: N0 ~# W! I+ k( yset trade-record-current lput([local-reputation] of myself) trade-record-current
1 P; t; e: X5 W$ R4 Q* W+ a]
3 R7 F1 S" z, R0 Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 A: N0 a3 r2 ~( t. m9 d3 \
;;
将此次交易的记录加入到trade-record-one
6 ]4 f, X; }1 v' {: H& t% G: R" Mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: o$ c7 o' H- m8 p) l1 i0 Jlet note (item 2 trade-record-current )0 V1 Y; r# D" W. j: r% E6 h
set trade-record-current
& J" g8 d9 A! ?" H! F6 a8 F7 G) N: i; ~(replace-item 2 trade-record-current (item 3 trade-record-current))

% x0 m$ S, B0 F& Rset trade-record-current
2 F8 S0 X7 l7 U3 f(replace-item 3 trade-record-current note)
' W1 l! d) z: s/ o# W' l6 A& O2 @# @# S" M/ V# k* U6 J

( A# S7 Y7 y7 dask customer [& v' ?/ |6 G: O
update-local-reputation
& s+ s1 A2 R& t: O' B; [set trade-record-current( a) A/ v, b  Q, M" \$ y" s# @, }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, g. Q8 {: L9 I6 f1 L1 U4 G3 {
]
, S9 `( G& E8 e* T% j) u
  l$ u- m4 U/ Y1 w' u# s
9 Z  @! p6 f$ g1 o" Q4 f
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 [  r: D2 u  \* n
  Q1 B" a1 d1 O. o! O
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 p! D1 e& g4 R: z/ T- \' ?8 ?
;;
将此次交易的记录加入到customertrade-record-all
" C/ f, a# T9 [2 E% j* O0 pend
/ S; w" \' K5 t1 U; T% [# ^
$ X6 @4 _) m; c$ Y+ k' e, Sto update-local-reputation  u2 d, ^0 ?; {. D& Z  n
set [trade-record-one-len] of myself length [trade-record-one] of myself$ O2 {; m8 b9 k) }6 Q2 A
  `% Y/ a  _$ O% T5 |! [! c
# B& e1 D8 p' \: J( Y
;;if [trade-record-one-len] of myself > 3

3 A- |  `/ G% z1 F9 Cupdate-neighbor-total
! Z( M% Z. b. y( I9 E2 n;;
更新邻居节点的数目,在此进行
$ J& K0 l! M( a8 l6 j5 F3 llet i 3/ Q% P4 v3 w9 M) o! m2 v# u
let sum-time 0
3 q1 G5 S+ M( X4 U6 c) H' [- kwhile[i < [trade-record-one-len] of myself]
2 n, ?& k2 e' q# c, w3 Z[
% Y. p  A# d1 |' Q: Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ {; N% R: \' }0 n& }9 sset i+ y3 ]  a/ u8 \  e2 j
( i + 1)

4 ?9 }  E. T& l7 w* J. I0 T' l+ I]
2 e8 f  c/ f& p& f  Mlet j 3
7 Y9 c8 q% v+ |+ ?/ \6 k* mlet sum-money 0
& {, z0 L' R1 W" H- Zwhile[j < [trade-record-one-len] of myself]
0 b6 {! x8 M- g4 D- _: s5 n[; o/ F, p- S$ E! Y3 l( c% 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)
+ a$ B7 U; P4 \8 zset j
7 d% p0 e( r5 x) }, t( j + 1)

! D8 F. T% `1 C% s( e]
1 ?8 \6 j6 h% a. K1 \let k 3
* [2 R. \5 c& [2 qlet power 09 v, f" H" {9 {$ U  h+ z
let local 0  S2 B) V: h# i% k, O
while [k <[trade-record-one-len] of myself]2 C: t) w! `/ L( G- Q; [
[- g" E( \3 ]# G  C6 e* V8 i
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) ! E+ K* k5 o, S6 X$ t
set k (k + 1)
, k$ Y- ~$ y+ `]
, I& X( L* I6 Q- B' U, rset [local-reputation] of myself (local): a( X. M# K7 U5 G! G1 [
end: B  j0 Q  S: b- K; T. H
" H9 S$ _/ f' L+ N2 q+ r
to update-neighbor-total+ B9 \3 f5 P6 c* [% K! Q4 y

6 C9 o# S) K3 n' R4 j. T' `if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 h  J% `# I4 j9 k. m3 @1 n7 c7 @3 ?! ^

: l4 q" Q4 E9 H5 Y! S) kend
. J7 g+ I# _. ?& _% Y/ s
' w$ O7 X; |  {0 l. Mto update-credibility-ijl - q+ W) y3 X- v$ Y* I: s- \

$ Y: i# r/ g0 W5 F0 z3 F;;
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。, D4 l8 `1 C& l1 l, h, c) l! l
let l 0
' F- [3 V3 p2 ?7 N! o. O& F4 fwhile[ l < people ]2 c% e: \0 r2 p3 c! u" k1 w
;;
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
6 n: ^# i- z$ ][
, f/ m4 S5 p" y$ b) `1 \6 Z- qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. a$ v( V4 Z' I, v4 q" y7 Fif (trade-record-one-j-l-len > 3). h8 [( T, t- @8 F6 |8 O  Q
[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-one5 C! E; J8 F8 @6 |
let i 34 _: y* B- G! K/ i2 [
let sum-time 0
3 @! `8 b+ y: A) p7 Z9 m; Fwhile[i < trade-record-one-len]* t9 n" f: v+ E) U4 Y6 H
[. j* D3 f) c( ^& ?* h: \
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& J2 r1 A; v( K1 B9 c2 k
set i( `; E! P/ b: w. s- a
( i + 1)
' y/ V" y+ X  t0 \! N
]8 ~! ]6 w; S4 p) Q6 M6 Q
let credibility-i-j-l 0! X# h# u* h! M" a& _$ x0 o
;;i
评价(jjl的评价)- q2 p' A- v& T4 {6 S) I) a
let j 3
2 L! I. u& C8 r* l1 tlet k 4, U! w3 F- o2 Q1 d+ \* H9 f
while[j < trade-record-one-len]
7 y! Z' d9 r* M6 f[
% A) U, w, D( |! D7 z+ x( j% N6 ^+ pwhile [((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" H! d; {" c- [0 R+ L
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)0 J9 {# E8 B6 C: K
set j
2 c; H3 m0 {$ w# W  C( j + 1)

  Q4 T, Z, e$ V: D# ]& |1 [], o4 V" R! l1 L* u6 F* D' i
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 ))) C- h+ k# d0 {, u) Z
8 F- S& R$ y5 k5 d$ l; ]

+ L# C  T8 P! n' M# h: c$ Zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( q: v6 ]: l7 t8 R
;;
及时更新il的评价质量的评价2 z0 _. j" Q" F; \
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 a1 g- C1 f6 ]% t9 l" }0 `* C
set l (l + 1)
- n0 j& d' u2 J]
, @/ s/ \- b  D; N  pend
$ t8 l% i) s. [8 V$ w0 Z- l8 ?' a3 ]$ Z
to update-credibility-list
1 n' L! Z* k1 f3 J. Ilet i 0
* B! a0 {( w, g4 E; Kwhile[i < people]0 ]* ?2 K# ~3 c: k5 J
[( G( D9 Q# [3 H! d% H/ K5 j0 ^$ a- L* {
let j 0
- b0 E- H) C2 I- p* G6 K# Glet note 0; K3 R% g: k7 ~: w% O8 @
let k 0) n% U" m  o. A% ^  _
;;
计作出过评价的邻居节点的数目0 A4 e/ t6 }7 ], C
while[j < people]
" X. t/ i- z2 r# x- R% N) d3 `[! B  A# r3 G! z* Q  T2 L
if (item j( [credibility] of turtle (i + 1)) != -1)/ S1 o5 S# s- ?1 q$ x! X
;;
判断是否给本turtle的评价质量做出过评价的节点
6 Q6 P7 X2 c, v: l: u0 f: l: j! D[set note (note + item j ([credibility]of turtle (i + 1)))
# v2 o* @$ e! ]8 {( G; P( ]- j;;*(exp (-(people - 2)))/(people - 2))]

5 m, v! e+ K5 v2 u8 k" ^set k (k + 1); ]+ |  }) b4 o) s, I: h
]8 o1 c. f4 X) @9 t( s$ w
set j (j + 1)- v; B2 F- A/ ]7 ~4 F
]
& c  r7 T/ [: Y2 vset note (note *(exp (- (1 / k)))/ k)6 u& n; D) f! H, L. n2 ^4 X. ~) ]
set credibility-list (replace-item i credibility-list note)
# N* z3 N2 W$ i3 W; |$ z2 fset i (i + 1)- D  B4 V% `  L+ B
]. Z; e3 E: ]+ m2 C2 _& H( g/ a$ z
end
7 [( q3 n, z2 n! e6 U2 ]+ h8 h6 h: ^0 n+ N1 s; W: ?& T- ~
to update-global-reputation-list
  @; u5 n! n  V+ @+ D/ w' `let j 0
2 T) ]5 R/ w4 d, ?' mwhile[j < people]
. s1 Y) ~% H6 \$ [, U; H) ^: W[
7 K- r# _. M% \% t$ plet new 0
$ I1 f0 c4 e7 `3 l7 j% _;;
暂存新的一个全局声誉
" p; t% E$ s+ B2 q5 C9 wlet i 0
+ X" a$ _, p* `1 R4 _# zlet sum-money 0
2 p$ P/ k& k: [# a, Mlet credibility-money 0
3 M7 W1 u. K3 A+ l9 ywhile [i < people]: w- g' e2 h" p/ u
[
8 D8 G$ f' @" p3 jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 H& K. e1 G$ L" H
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- E2 R+ {9 v0 ?; D+ ^
set i (i + 1)1 H( t5 [# f' |) e. Y( P! ]
]3 ~  b2 {# V: q' F1 o+ L
let k 0
7 N2 H, O. _0 n; }2 }! }let new1 0  A, |/ I! l) @& }. h! k
while [k < people]) Q' p! P% i  ]
[
6 O% f0 P: q% j7 q! q9 Yset 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)
! c# F) |+ |' y* vset k (k + 1)" R0 Z- g' _5 U) M6 U+ l' S
]# y$ N5 ~# u; n$ w" P( @- p
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 b; P$ Z5 \, W1 S' q1 K$ w
set global-reputation-list (replace-item j global-reputation-list new)
5 V0 g5 F) }4 O& w5 |% {set j (j + 1)
, V$ A7 M/ s/ e6 r6 I" c* r]
& t  X! z. h, Y6 |: T- send
$ F: q) K+ U" w! t, i; t5 S0 m' M( b
! h4 [- H" S/ e. |3 T
8 \9 n/ V! Z: ^8 P- y
to get-color
: @, r2 |) a. X: O; n9 W" \" t$ F7 J6 F; L  w
set color blue
5 u- u9 b- Z5 D& c; P- U  L
end! \- T! b7 [6 q8 g6 e$ G

  \# q$ |! x8 Y( a: I4 Qto poll-class
2 h" [7 n9 A/ _# W4 M& X0 n5 {1 dend
0 z$ ?/ I8 j2 g' j1 `2 v/ b( f4 e+ v4 g
to setup-plot1# a- M8 ?; b. r$ }# M. Y5 K
- R& d+ O+ d% w) P
set-current-plot "Trends-of-Local-reputation"

0 |) Q0 t5 w7 A& \; C3 }& Y8 r5 o' D3 {7 \1 ]
set-plot-x-range 0 xmax

1 x& H! A7 j! R" D5 e+ b
/ N/ b' C1 g! a- L. `; [set-plot-y-range 0.0 ymax

& ]( r* o/ Z  U% I1 j) Bend
; C- ^) N8 W) ~: _3 z5 T7 y( R" H9 F- ^1 W* r
to setup-plot2
9 x% F0 Y" \4 A8 ?3 y) |. c$ [. o2 l  i2 B1 e' S. C
set-current-plot "Trends-of-global-reputation"
: P* Y  J' |9 A1 |; W; T
4 G& W5 k" x/ l: M' M
set-plot-x-range 0 xmax
% v: f( n* }# Y9 D

9 M$ _& L, D9 m( D$ Qset-plot-y-range 0.0 ymax
6 N. w8 K0 ~- y, L6 V
end
4 x1 }8 k0 \" _
2 i' l# C8 B& C" k4 X7 z/ u4 q: bto setup-plot3
% O" A+ d+ l6 a% R7 Q! C0 Z( q7 M) F/ q: n( I
set-current-plot "Trends-of-credibility"
9 c6 U2 ~8 F+ X" J- i! |% g

3 A% u1 I$ G* x4 Z9 `, cset-plot-x-range 0 xmax

0 c+ x. I( M% @7 d! I8 p/ A- q' [6 `
( n# i- I1 j, m8 h6 Dset-plot-y-range 0.0 ymax
3 k5 l/ |- f8 L0 O( U4 ~( V9 l' r% T
end- d0 g0 h) m3 K! @7 h" I
/ S7 u- T$ l9 C& x6 d! `/ s2 {* L
to do-plots
$ b$ C# I! d3 uset-current-plot "Trends-of-Local-reputation"
- e) J, T% q) N7 m3 vset-current-plot-pen "Honest service"
) v; c' {; A( v% a; c1 nend
; f& x( U5 v- o7 J1 r2 x4 ^/ u: i+ W  p( d
[ 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.
' D, Z- w/ p% ~: ]3 Z* \+ a
, \5 D5 N/ q4 j- S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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