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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:
' m4 v; w( ^3 D+ y) Zto do-business 7 j+ E; ?2 B- ~+ t2 s
rt random 3609 n  M: [% w6 g2 C7 P' z! q
fd 17 n% S" f1 w4 J
ifelse(other turtles-here != nobody)[
% _, K9 S+ l- U8 ~, C# s7 M   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.
- |! b2 n: \( h- k) g3 a   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& e3 ?! O) V0 S/ S$ o   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% p4 l' f. e5 I! f1 Y) M7 J
   set [trade-record-one-len] of self length [trade-record-one] of self$ g+ E7 ]  f5 n% e
   set trade-record-current( list (timer) (random money-upper-limit))- I8 @* _% t/ t

! K% s' S0 ^! y: u( @9 U问题的提示如下:* r' W% I1 Y7 a  h: b/ I7 ^

" g! y% H8 }2 u( W# Rerror while turtle 50 running OF in procedure DO-BUSINESS
9 T# x/ L* U* T, D  called by procedure GO% j, J$ G& d7 A* f3 q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 g' W2 b+ h1 }* ^# F
(halted running of go)( k" c+ K+ G5 U
  `& |$ E! k4 F, D% f4 ^
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~~
6 t5 I9 x: {9 W( t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6 b: W! ~( P( H/ D2 z% N5 Z
globals[
. q! ~( Q  @6 _/ z1 C( w* Hxmax9 B5 I! k% ?( n  R5 Y+ R6 Z* y% B
ymax
4 S$ ?; G! m- t6 ~% P# aglobal-reputation-list& d, `6 Q7 ]; q0 t/ B) i

4 v/ E7 g* m; h( c! L;;
每一个turtle的全局声誉都存在此LIST, F. y. d1 }& P3 p* R
credibility-list
3 K% \) S: H+ k$ s; O3 G;;
每一个turtle的评价可信度
6 r1 N7 h# \! F8 |/ Shonest-service5 `# E4 W: J$ J% b  n
unhonest-service
6 k! O! u% B& F, h. F" S& c! @( \oscillation
* _3 Y$ E& G" G, @rand-dynamic% P7 s$ T0 i2 L4 |5 ]5 L
]8 ]7 @1 q1 S, i  |" C8 T, E

9 V. h" |% e) ?% d5 Y0 @turtles-own[6 }6 |& [- t, s: S$ D; P+ z
trade-record-all
/ j$ q7 k9 G: C1 F# [4 _;;a list of lists,
trade-record-one组成( W7 g/ K8 P' B8 ]3 @" A$ [
trade-record-one
. R/ w* c& ?) @  K& J9 ~;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 r9 j3 K2 r" k0 \2 K: z% d

+ V: g/ ?# J( {% k3 L) Q;;[
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]]; _+ `8 \9 l' {/ s. W
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]7 t0 X* J' o( q* Y/ l  C, O& R; M
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
* ?5 S8 _8 G2 B% [; gneighbor-total( T5 o- g: Q; b  C
;;
记录该turtle的邻居节点的数目1 |" u2 `) |* T5 |' b  p
trade-time& S! v( R0 {% k/ x! m! Z% h8 e' R2 e
;;
当前发生交易的turtle的交易时间
9 e' H9 _! F' w+ h' B, Happraise-give( C. K# b. w( u7 w* z+ j$ |
;;
当前发生交易时给出的评价0 g0 O" j) M+ @
appraise-receive! B$ a8 y& ], ~4 G: {0 }& O
;;
当前发生交易时收到的评价- f' z& @/ d" r/ r0 c7 d/ |) p2 @
appraise-time" r0 H& o# V7 u" t
;;
当前发生交易时的评价时间' R# u' e/ \9 {3 {: b8 G6 a
local-reputation-now;;此次交易后相对于对方turtle的局部声誉" U, Q* _. I7 S' I+ B
trade-times-total
5 g/ x3 I6 d/ G1 n;;
与当前turtle的交易总次数
: n/ t' O2 s0 ~2 w4 h7 Atrade-money-total
; C7 P- _' R) P5 ~;;
与当前turtle的交易总金额0 W5 R8 Y) z+ L! p* B
local-reputation* N8 ?' ^" f- V* a5 C
global-reputation) X0 J5 d2 i" D4 M, F3 K
credibility  N  }0 n  y: v5 r
;;
评价可信度,每次交易后都需要更新( K. t+ G8 o7 G( h' r- O
credibility-all
  V# c/ P, }' {1 I$ b2 K9 v;;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, N8 _1 V* X0 A, ]* _: ?. F- C

7 j, t2 F' i9 o) e;;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0.59 A- P' A/ c/ L3 M( W5 c4 l
credibility-one! l. @. |& i7 ?
;;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) N% r0 t- T; t9 M- t% d
global-proportion
; {/ ?; ?, j# y2 `customer' v- H9 Y+ }* }4 B
customer-no
# ^7 x# b" S" c% x6 }trust-ok: M) f2 s2 M7 W7 b2 v
trade-record-one-len;;trade-record-one的长度, e/ z( m6 r  j3 o
]0 V7 C! ~- R# ?$ v& P0 ^6 E
% `# @0 r1 D3 o! M& W
;;setup procedure
0 Y" S8 J; ^, M+ p' ?/ Q6 ]7 c2 `! a7 L* @! z
to setup' L7 P. o. v2 U3 `9 e) s6 \
6 [1 |$ H/ x% H( ~& c
ca

1 R3 y. F9 D  u5 ]( @$ k) A3 N3 J* P2 p" d
initialize-settings
/ {% M+ v) j; |/ J* e0 ?
+ n* M5 x! K# x; {
crt people [setup-turtles]

: c& ^' L" ]7 s1 v
3 ]6 A; F/ a6 |, k- Oreset-timer

7 [0 a9 }; p3 A' y- U2 a6 s! G* h9 ~$ P1 |( w! O: }, K5 W
poll-class
( {, d* n% Z0 w# _- \8 F
9 H; ~0 K, a! F9 E! f& o# M4 Z
setup-plots

6 I' @/ q- Y& U/ `' y& q1 e
9 r; R/ H  F! v+ k; J; mdo-plots

. G( K2 I6 C( N/ l2 p- mend* q2 M( t* N4 E

5 @! A4 ]; X" ]7 S# tto initialize-settings% R! [4 C. P% ?, I. _/ B& a4 @
3 C# n# ]4 P9 C# `
set global-reputation-list []

3 @7 S  r" ~3 u9 @2 {, k* u- F* E/ Z# ^. _8 y1 |
set credibility-list n-values people [0.5]

" u8 L! h; Y( b
- ]& R! Z3 x* F, i: m4 ]set honest-service 0
( F% f, B0 l1 I% c8 S7 X$ g- `& ]8 u; ]

& x( f. r2 m9 h9 gset unhonest-service 0

' }1 c9 e0 R  u2 T- j* m
9 W5 ^* ^7 W8 ]  xset oscillation 0

. B* e. K& j4 V% F& U, X( W* G8 j& |4 D! ~5 e
set rand-dynamic 0
# s- S9 }% {2 C$ t/ I" Y( K
end! b9 c4 N2 m8 o" b: ?/ i, c2 \* o

2 L5 Y% g7 u+ v  C& j  nto setup-turtles ! A  N$ F& O' r* |8 W+ A
set shape "person"
8 ?: U5 w, k4 |* F4 r7 _4 Isetxy random-xcor random-ycor
. ~& M+ i) L, g' n0 y- d/ vset trade-record-one []
( E1 k' Q6 r8 s1 G1 v
: A( E; u7 J* v0 b/ B2 Y
set trade-record-all n-values people [(list (? + 1) 0 0)] ' e- r; d% B- r5 R$ o' y# @
( [) B  H7 _/ m5 ^3 K. |
set trade-record-current []
2 M+ w  v& S- ^( ~' e/ t) o" zset credibility-receive []; ]" Z# i8 w6 s- [$ u
set local-reputation 0.51 u; r7 K. o6 R9 p
set neighbor-total 0& L* ]' G2 v  Z- t( F  K
set trade-times-total 0
' t' ?. J0 A% ?# r4 uset trade-money-total 08 i1 z* E. s8 q
set customer nobody
- G$ `: f4 U/ a1 ^0 Sset credibility-all n-values people [creat-credibility]; Y/ z* R8 k* f4 O( ]: x
set credibility n-values people [-1]
( e; [. H0 ^, U& K; O6 gget-color
3 y0 h- \' ?2 g1 f/ m$ d! }
2 I$ C- U3 F1 Q- V9 ], N
end3 Z' W- a% e8 A- K# r5 T9 s2 t
: I7 Y! N6 A/ z7 h" N
to-report creat-credibility
+ O+ p# D% g, O& W5 v" o" L* i; e5 rreport n-values people [0.5]2 k; l# n" [8 l: p9 L
end
' a3 u% J1 r1 b+ `" @! r7 m) ^+ W" c- A( T5 K8 L, X5 v
to setup-plots0 h2 a2 B. n9 j) J* q

0 G+ M( q8 u$ M& ?3 Qset xmax 30

- a0 L. [# f8 C" W8 ?- a1 I( z& b
( G1 [; O8 u4 l' c# Z, v, sset ymax 1.0

3 V1 F3 M7 O( @- u" v0 _
, [, F1 }. t! l% L! h- X9 qclear-all-plots
: {  f4 @: G  h

5 K- ~! `* N- M+ \setup-plot1

" Y% N4 x5 ?% x: C; Z$ X8 o4 P/ f# s( U: M5 \% V" z3 n+ \
setup-plot2

8 c! J: B. i0 h% a
  l1 x. b% @* T( ksetup-plot3

! Y+ r( d" o0 o( iend# ~8 F3 l. E, ]& P4 N

! o4 W/ @2 R; U  {1 U" V;;run time procedures4 y7 H  Q  T* W$ u! k# a

5 F% Y& p# S2 n% S1 W/ k. s$ tto go/ U  t3 Z/ T9 w% K1 O$ A
5 n) |; [1 o' M  J& [1 F# r
ask turtles [do-business]

/ z) y' q1 t2 S9 M- y$ aend
, P9 g! K3 M( x1 U0 V, J. |
3 u9 A9 {- L" c: O& |9 {. lto do-business
5 L- i, i3 U* Q" e( ]  `4 e

" Q% v. o+ l2 M& J* R+ D: w  A9 `/ \9 I! `' c/ x$ S
rt random 360

& B. h- \  o  z. z
/ l. [$ @$ E6 W% L0 b- bfd 1
2 z- q/ k* A4 l% A0 ~# N

9 I0 P* S! B! Y+ i, H) U, ~ifelse(other turtles-here != nobody)[

& d2 D1 M3 g" f- Z4 M: x; K0 b. W$ ]% ?. Q
set customer one-of other turtles-here

% Z$ g! A, q; t. X
& W( p% C' e% ?  _; a8 E+ k* v% r;; set [customer] of customer myself

. Q# f( j% e8 U. h
! U$ j5 `; y1 x5 b$ o1 Fset [trade-record-one] of self item (([who] of customer) - 1)
( R; m( l8 L7 ?[trade-record-all]of self
6 A& R) w4 u9 p, C& v$ n;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% ?/ e5 U- U4 L/ E
6 t) {' W! |2 m- J( t! zset [trade-record-one] of customer item (([who] of self) - 1)
5 ^+ E& ]4 m) B* w+ i, ?0 f[trade-record-all]of customer
' C9 l8 b8 ]* y! c4 \% L
4 f% t8 d% O! B0 }% F5 n3 R# Y# r
set [trade-record-one-len] of self length [trade-record-one] of self
5 N& m# R; Q; V" l5 w% j/ F" W% Z
& B  @( m+ _# C; {$ P
set trade-record-current( list (timer) (random money-upper-limit))

: u# w5 U. o+ ^$ S
, i- X* m6 V& ^, K, o+ J- [ask self [do-trust]  J0 n6 `1 E, p5 f
;;
先求ij的信任度
  h% W. c! J3 k, R
- z- Z+ o6 x/ D* Iif ([trust-ok] of self)- [+ R  A0 l3 _
;;
根据ij的信任度来决定是否与j进行交易[
( J3 q/ J7 J& K; _$ h. Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) X: n1 q/ G. e& z% h2 g0 J

& h, g# \/ G& x. [$ u! H* }[
8 c9 g* x& E' z: r

& @. J- Y+ _, d1 X5 S2 D9 t$ Fdo-trade

6 }5 T, k3 l9 ^6 _0 c! E2 @; D0 Z0 s* S2 r: H) C
update-credibility-ijl

/ I* y; d/ l! C. U6 {4 b( |+ _, ~7 {9 l0 Q7 d
update-credibility-list
: O7 e6 D' z8 y8 r# [* o; B

; \  H0 O7 [5 y7 ?# r6 w" X# v
% L# |* V$ m( n) Supdate-global-reputation-list
" i8 V7 S" L8 d; @# s4 ?
6 V; r  Y# z" `& j% N/ I
poll-class
7 T/ x1 }$ G- i$ _- L7 [

9 ?% k3 h6 {0 T  K. h2 n, C0 A" tget-color

+ ?9 f" O: Z$ e( v. V4 s2 j% Q) c2 N: N  A
]]( v% {$ T2 {% r, _
+ ?: |+ [5 m% U2 G
;;
如果所得的信任度满足条件,则进行交易8 r) O* I/ y' |8 A
/ B1 q9 K7 t. H6 `
[
" p5 |5 X- n% a- U1 p
) _3 [# k$ v4 R3 L+ z4 r1 E( Z
rt random 360
0 _9 w) G6 {& w+ ^& l0 d

0 V4 H& \; ~, \fd 1
* y3 S# ]! O" H% ?3 v3 C
% k2 d8 e/ O" d0 ]
]
6 T$ d( R0 U& U- F4 j% K/ B* p
6 ~5 s1 }% W# _4 e2 \# e
end
0 s% g" o: X8 z; E) C

- q" U) Z/ `! H2 x8 B7 b# F! t, Ito do-trust
" S6 a, h, y  m1 S! k; wset trust-ok False
1 {. q( n+ N- N  v9 z5 [/ d% ?! B% L  @9 _& Z/ l/ p

7 A  U4 G: ]" Qlet max-trade-times 0
9 n; I3 r+ Z5 v% G0 Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 V2 i) J) r/ llet max-trade-money 08 F5 o9 U5 E3 A. q3 p* B; b% Z2 P
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 F( h) _8 [0 K; x1 F: r2 V3 J$ J5 P9 Z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' ?% }7 b8 Z) w! B0 U
3 Q+ ?' f% M, p/ M4 `* @( F
, a/ ^- Z5 b" o
get-global-proportion7 L0 v' l# y" D' d$ \- C
let trust-value
+ C' s* z: D3 G& j4 y; Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

: b$ O& f) B. ^if(trust-value > trade-trust-value)
/ M$ F( l5 U, T8 w# H[set trust-ok true]6 }( A: @; A: ?9 A! o& [" w+ J
end
! r* V# h1 z/ o: x* V1 U. Y) {* t
# C6 `3 l# ~: ?to get-global-proportion0 {2 D* X5 S4 l  z+ P
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 s: m- Q  M/ R[set global-proportion 0]% ?3 f: o. C8 P+ g  m
[let i 0% n( N" {3 @; k  C+ A
let sum-money 0
1 u7 h7 w( d3 J2 \0 xwhile[ i < people]1 D# W: R) r7 E1 i' ?9 O
[
7 G, S& N& l8 j$ ~; o5 O3 O$ jif( length (item i& L! v: d- W" E, ^9 |+ i* b
[trade-record-all] of customer) > 3 )

0 Q  f* y# f! d9 t! {# H4 L7 {' t* z[4 W2 V  o& h$ Y$ ~* Z8 i
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 |% U: z* R) E, r7 c]
: i/ u' s: |" D3 i5 u2 l]
5 a2 g# v  @4 Zlet j 05 p4 @4 [) f% ?3 o2 h; ]
let note 07 N' J9 d% L9 w
while[ j < people]
9 F6 S0 B0 c; `# y) v6 d' W[
, P# ?2 d7 i& o9 g; |- Pif( length (item i3 A! u" l& u# G* ]1 A
[trade-record-all] of customer) > 3 )
3 Y; P& w6 c- G- q9 F8 V; P
[1 g+ p9 _7 m* A+ B1 j% l/ j$ K
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ ~2 @. D7 a1 X/ ?& n  Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 a3 ^9 M9 |0 j3 w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 o; N9 e; t+ v% z( ?& X
]6 ]0 F+ Z8 U& s0 W
]9 \4 ?6 I3 N7 u- o. x6 v0 \
set global-proportion note+ O* @; u' l6 b. v
], g. \3 H" W9 s5 G7 }
end
5 ]3 k* {" X3 c* S7 r4 Z# Q+ o6 H2 y( V
( x$ m$ X2 F$ f2 N1 N+ ^. o4 Ito do-trade
2 ^" u' j* K) _8 |; R6 x;;
这个过程实际上是给双方作出评价的过程4 g( `1 F3 p  Q8 n6 H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* W8 O- Y$ \) lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ o' W8 e; S3 s5 c: X0 p! ]set trade-record-current lput(timer) trade-record-current+ W+ `2 ]4 F! U1 b" P2 [" H
;;
评价时间# z5 c# ?# R. j8 O5 S6 V" R7 S
ask myself [. L  W2 P! L2 ]4 `! n
update-local-reputation$ l$ a6 t* e/ ^; h/ f1 ]1 A
set trade-record-current lput([local-reputation] of myself) trade-record-current2 t- g: e2 o- P4 v" i, s9 V, g4 j6 R
]
6 h7 x" d; z. Pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! O! ?: W, p& u- N3 Z4 G, R;;
将此次交易的记录加入到trade-record-one
% B5 \& p3 Z7 J6 W' b# C/ Qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 R5 d+ t' |7 u/ b5 ^* M$ u: J. g- B
let note (item 2 trade-record-current )
3 l2 k7 S$ b# w2 [+ |+ ?set trade-record-current
0 x/ X8 a4 t5 E! |(replace-item 2 trade-record-current (item 3 trade-record-current))
( @5 M4 v: o  D# y
set trade-record-current
8 ]: M7 r; m9 t3 u0 D! v  E(replace-item 3 trade-record-current note)
; ?# j7 l% j7 ~0 _0 t6 e) x& h3 C& C3 M- F& v

* B) n+ b, r. s2 D+ qask customer [
: U5 O" S0 f+ k* H, Vupdate-local-reputation( q3 }4 f  l6 H; F8 D' X
set trade-record-current& V" o$ Y7 i' W7 W$ ^: V
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 R- N* v  G- @6 L& j7 X" K. H]
! u& D( [) |( M. G# d* J9 f( g) g! O, c" O. Z: n# x! E

& l5 G7 S7 [5 i3 G( Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ A1 n2 B3 T7 e- g) B5 y% `# g

$ @( }8 w# R* S  ]4 P: \) bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ x! ~! x4 W# m. m9 X" m3 R;;
将此次交易的记录加入到customertrade-record-all7 u) Z, _% s" _( R6 Y$ K
end
  u6 _- R) N; {# i5 _- n( X
# i' }7 ^. |/ f# h, S, K: N# g3 wto update-local-reputation1 \2 M- v* o4 x/ y* O
set [trade-record-one-len] of myself length [trade-record-one] of myself, C" F6 t4 ^- G4 E
9 o+ m4 u4 R) S, T/ p$ t& @
$ ?" R5 ^  E# _, m' p
;;if [trade-record-one-len] of myself > 3
0 Q/ z& _. }+ F4 O$ S
update-neighbor-total
8 ]% c) f2 e* O- f' I;;
更新邻居节点的数目,在此进行% ]) K8 K  z& ^2 _: X
let i 3
! p" k) u2 v5 G. M' Rlet sum-time 0  t. D+ V5 s& N
while[i < [trade-record-one-len] of myself]
! s* z4 F2 @( [7 \! e[* ?6 I6 F3 Y& b4 Y4 }! q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( U- b8 i" ]/ `4 G  hset i
3 p# P2 @1 Q) A" W8 A0 r( i + 1)

, M/ r' b5 r; z0 C& I+ g: U]9 q7 e: x# K1 d) [: O8 [2 n
let j 31 n, Z4 b. t! \
let sum-money 0
  p0 w- y0 F+ ]7 ~. ]while[j < [trade-record-one-len] of myself]
5 e& l3 i) X( v( H5 W3 ~7 h[
. }1 j( J' [2 {% m/ F, t+ m/ Nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
7 p0 M1 y5 T7 l) rset j: ?3 O$ T5 @. t9 }- z
( j + 1)

6 m2 c& T4 V1 r' P# y  z' Y]
/ v1 n) U8 @0 M9 C/ ?let k 35 v" L$ k2 x, o
let power 0- [* K0 d& w: P! w# j+ I
let local 0% G6 Z* ?4 N% {/ K7 V1 Q& q
while [k <[trade-record-one-len] of myself]/ F; R6 \( o- m7 w( e, T
[
. f" I. L. n" L* n2 U$ Rset 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)
$ g6 H$ d' |9 @  |$ eset k (k + 1)6 X7 F; J) z" F' H' M
], {  k, a, L- c& S& o6 `6 `0 g
set [local-reputation] of myself (local)
$ T1 w( V1 y+ O# |9 q& lend0 A& c2 f+ `) b( K
4 x( g* h- r! M1 i7 s: k3 ?3 g& H
to update-neighbor-total% f. l% W- t! Z) E& U4 j+ b
9 E0 F( s1 s' |) E/ @' X8 z: F
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, r# m) G3 K4 s) g# B4 v# U* t7 g7 x4 w
8 v2 C3 c  O) G# R, e
; G; b$ Z/ w  T0 {' ^
end: ~9 U' _2 c! ?# k7 h( Z3 L

, ~9 a& s# J7 \$ Qto update-credibility-ijl
, i& |* E+ L% S1 M' w0 G* J6 ~: Y" F2 V6 S" M3 \: ~
;;
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。
; |% P* l2 \4 m6 f4 e, E: i; Llet l 0
/ |- Z3 v9 C6 Z' O% j. o" E, Vwhile[ l < people ]7 U/ n! z* W, ^) N3 ?5 i
;;
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
! o' f& c* @$ J  z5 ]" K; q[% b! w7 e! P7 K  P/ s# z3 i$ M2 H
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 r7 {  ]+ b# s6 e0 J) z4 E  B9 Yif (trade-record-one-j-l-len > 3)
- g9 h5 n% E2 h  W: I! [[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one, O1 f  R! j2 A% y- N9 m
let i 35 a2 o6 n) s+ D( O" j6 [2 k
let sum-time 0' V8 O  b7 _, q
while[i < trade-record-one-len]
' n8 b8 z( {3 G5 l% R[
, k4 K7 B* q3 v7 x; Bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 V7 n/ z9 t. E; M% i5 k' w
set i
! u( ^9 M1 g( u& v  f: y3 c0 i8 s/ O( i + 1)

$ e  Y1 H+ f& W: a]3 Y, X9 D8 s! p  @  r; `4 l
let credibility-i-j-l 08 ]+ `5 r6 S& A/ J; i* l
;;i
评价(jjl的评价)
8 k1 H* l! `* n# Z) H7 {# `5 dlet j 3
) k' z( t+ J2 @1 i% Dlet k 4$ _& C- h2 w4 p7 A, E+ K
while[j < trade-record-one-len]
$ x1 ^! g6 C/ s3 X3 ^[( i& ^( w4 Z( t  {( M: h8 L
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7 E! Y8 G3 a. I$ B. T
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): ]# N5 w+ L9 k* h) i
set j, Q+ U3 V5 C2 r# r" m* }# r
( j + 1)

! k4 j; Q9 d& ^]1 B- d8 B# I6 Y0 Z+ C
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 )); l4 c" H6 d! g/ D

) B4 Q' p" E6 I" W1 o4 Q
+ x( c: ~& ^! m: f
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; Y) w) h. b  |( J% [* h;;
及时更新il的评价质量的评价
( g1 X8 x9 P3 j5 M  X. Fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ V8 r2 d' ^7 i% O3 Y! Fset l (l + 1)
; z& E& i6 n' v- f8 Y]
/ Y( u6 s) e8 Vend5 x1 K* [! u1 _
8 F5 k/ {5 H$ L( _$ K
to update-credibility-list3 ~. Y* `( N! r$ U
let i 0
$ C" o. j: u3 r* V8 a4 d" K; xwhile[i < people]
" D. c* Z; p3 l+ M[5 ^2 \. j# Q1 f& [7 ]& v
let j 09 x) e! J( L& l0 D0 ^9 E9 f. Q
let note 0- f2 H- l, E3 M2 @$ ?2 L) J
let k 0
8 J/ \: i, s2 Z+ K;;
计作出过评价的邻居节点的数目
# {5 ^$ E& t$ s4 _* _2 z1 Zwhile[j < people]
$ a7 v" \0 l/ e/ O5 m$ g. N" v7 j7 W[9 I+ k+ v! @8 [
if (item j( [credibility] of turtle (i + 1)) != -1)
) ~# K0 G, t# j" h- |' r- t( ?;;
判断是否给本turtle的评价质量做出过评价的节点: E/ G' `2 ^5 L; i/ E+ R
[set note (note + item j ([credibility]of turtle (i + 1)))
3 f& K/ B( |, I# q2 z;;*(exp (-(people - 2)))/(people - 2))]
$ ?5 d, X7 Z8 J% Q1 o
set k (k + 1)6 ?8 T1 n. S9 |' w
]
! O& Z0 B( p5 U# z8 rset j (j + 1)
" S  f: Q# C& _- V4 q' n9 s: e. j" g]
5 G" s+ c5 [1 P+ }  n4 hset note (note *(exp (- (1 / k)))/ k)7 U6 f$ _3 i$ z2 r) w% z
set credibility-list (replace-item i credibility-list note)
' d$ i3 K% ?) N- a$ G2 U& bset i (i + 1)
% k0 J2 O5 R: m" Q]. ~( R8 j* a; H2 V1 k
end
( ]8 a- J; ^' g+ ]% m" S0 Z' C9 F4 E% X
to update-global-reputation-list
6 ?& b6 Y0 V" @let j 0
) o( _5 k! |8 o  b  p+ C  owhile[j < people]& ~7 |& h3 n, e+ G# E: X$ ]
[: x; R, |; P" n. V$ p, M
let new 0, {3 _) E* ^. ]0 |
;;
暂存新的一个全局声誉. q9 M, L% M" c: e4 R" ^
let i 0
# }8 w0 Q/ }* U; O/ {$ p) [  ^let sum-money 0
$ _% U% u% K; ]+ d3 ylet credibility-money 0
# T4 z/ j3 p% u: K2 R& T* z9 Uwhile [i < people]# p& r1 \/ l% J. z! |
[  D; E% h/ ]3 i8 e
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- W# y2 w: Y( O- e: Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; s7 h/ g5 j) Z; l( Y5 _( Vset i (i + 1)
, F5 j1 |0 {! b$ S* H8 W* Z]
. ^* ]) \3 Z% ~" W: L: R/ Blet k 0
# x6 ]( M* @; V- o; Slet new1 0' W' f% C; c# P. i% v1 w
while [k < people]
; o* W; ~' w! J' H# x( W9 K[2 t: _7 i7 }* J  @. b$ \
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)
6 q) T) R. `8 O: j/ N# T. Rset k (k + 1)1 O) g8 y% R4 C
]
2 T, l+ R4 K- m" E8 ~9 h6 {set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 c; L# R4 u4 w9 T7 m  gset global-reputation-list (replace-item j global-reputation-list new)
, p  A6 W8 ]! X3 v2 A. xset j (j + 1)0 G0 R2 p+ I0 z
]
. K  ?1 @9 D+ g$ a: V: w3 mend% |1 L+ A6 `9 w! P8 ?) f  A: z
6 A; [9 S% I; W* A

  p  ?8 a  ^8 F$ C
3 {3 H9 ]* N9 f; u2 ~to get-color
. _* y/ L( G: W) J# N( Z7 k  e8 H) s. {+ ^
set color blue
4 |/ i4 w! `, S; ]' L
end0 d; x2 ?7 q! t! U# `+ L

# U/ Y6 _# e) ~' L/ a3 eto poll-class- P; v  B, b/ O% N4 y, E6 R& a
end  c  L+ H: b1 \; U, k9 `  r

, p0 x; X# ]" w6 Bto setup-plot1# O/ ]& U: M/ }. ^2 Z/ N1 Z
) q8 B; Y  |! i- e$ ?
set-current-plot "Trends-of-Local-reputation"

- x/ a4 l: O2 v+ k5 H. x0 b0 v+ b, Y; A* K0 b; v
set-plot-x-range 0 xmax
( W: d; c, K2 r3 C9 I

2 |) q; T' g5 ?" x2 L2 [  [set-plot-y-range 0.0 ymax

6 F( }4 F6 B7 i+ |0 c0 P8 jend  I, A- M0 k3 Q# d$ c- Q
% N# t7 g4 z3 [2 ^1 m0 f3 M% G3 d& A
to setup-plot2
. q7 Y6 }( S2 R* H2 p4 C0 h6 j* t8 W
set-current-plot "Trends-of-global-reputation"
, d" ?6 G& {" J. ?7 T' _- ^8 ^
4 R$ V( I  z4 [0 r) \- {
set-plot-x-range 0 xmax

" b5 @5 ]& Y# Y  N
$ L7 G# o' D" R. j2 ?. Xset-plot-y-range 0.0 ymax
* z3 Y  r( D) d
end
9 n) r& b, G; n4 @  j
' Z( h$ x7 G) I5 Qto setup-plot3) A5 B: a  C/ T' U  N  H- f" Z) H7 `/ [
( k' _( v' V7 w- b$ S) W; U3 {
set-current-plot "Trends-of-credibility"

$ c3 N0 ?; [1 V" B2 c* Z1 v
9 b* m7 h9 u! ?3 h! l" e3 Kset-plot-x-range 0 xmax

5 n  i/ u  ^- g0 Y
* \0 m7 K3 O9 Dset-plot-y-range 0.0 ymax
5 `" m( k) l( j- x  m
end
' c+ j0 e/ Y/ W( g% k. S- _% B
. S2 z2 Q; p  Zto do-plots7 L9 w1 \# ~/ _$ K) G& k
set-current-plot "Trends-of-Local-reputation"
  U% s5 p% P3 v7 k7 a6 @) X) yset-current-plot-pen "Honest service"' }, B1 y. j3 k
end
) `( s5 M1 Y7 z7 b
/ x( J; F1 q% Y/ q9 S[ 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.
  f; R, H( @8 H5 B; L3 w# w$ g( \( G, d9 n+ a! g7 ^" u9 w: U8 M
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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