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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:% F# P6 m) R" K3 `( D
to do-business 3 X( B9 ^6 o4 ?8 i: W8 H
rt random 360
8 N( ?( ^  p7 k" G0 ` fd 1
1 p) r0 h6 G6 x; L ifelse(other turtles-here != nobody)[
! @" f; v& t& d   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.% ^& p& f3 v, n$ k1 p3 V' \, d
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. c8 h6 Q! M% I6 [1 T   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ ]! R( `# S. `% U( s
   set [trade-record-one-len] of self length [trade-record-one] of self
  v; K- G+ r5 I+ o5 m) Y   set trade-record-current( list (timer) (random money-upper-limit))4 @! E# A* W& K8 @# H. `

* Z) P) ?  Q, n2 I1 N$ x6 B问题的提示如下:
1 E9 ]# v; k; U( S; r  ^
0 H2 a# s# e2 O# w+ p& A% J4 L- T! ?error while turtle 50 running OF in procedure DO-BUSINESS! y" I, j0 v- @' s: E. g9 Q* Y
  called by procedure GO
& D* M7 [2 ]' h$ L; b3 p+ t1 pOF expected input to be a turtle agentset or turtle but got NOBODY instead.
& D! C; i3 t; Z
(halted running of go)- k1 m- W4 B8 \
* q1 ?, {0 R% e: b/ k5 j/ x: b1 m" Y
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~~
) a9 M) Q0 h+ h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
$ k: R1 g- y# Z5 L7 Kglobals[3 o3 M. J1 Z. C4 h+ P) f" O$ Z5 b" Z
xmax- ?$ N0 V. u( W$ @. \# O& ^
ymax
; e" g: d9 A; h; W4 Eglobal-reputation-list. Q9 o/ h$ K  }
  O) E$ P; T! G" E
;;
每一个turtle的全局声誉都存在此LIST
* T/ `, x: h/ I3 i1 d5 o# @credibility-list* P% U, T& }+ v- H3 y+ C
;;
每一个turtle的评价可信度5 r' \2 u9 {4 b/ h+ _$ U9 X
honest-service
. m8 [. k4 k5 G2 V( Zunhonest-service
6 E$ o( Q: ]0 woscillation/ Y+ u! }+ K5 w4 V- b
rand-dynamic
$ T& X$ J. S9 i8 a# X]
6 B: l. P5 E! m/ m1 i/ Q
% l# W6 A) I1 r* c& Wturtles-own[
; H% @# n. a8 K, ]) Mtrade-record-all# i- w* H, @) w( G+ C: E" j$ @0 ~
;;a list of lists,
trade-record-one组成9 R- G0 ?; ^' l$ E. ~
trade-record-one! m9 D/ Q7 v6 p$ Z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# d  \- X) S( ]) _

& x! |( H* S% e, y) z;;[
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]]/ U* t2 Z0 H8 t: U. K6 r: [
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 R; {* m7 B- J
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
7 r; ^) [" o$ B4 f, }: Xneighbor-total
5 w3 B& [3 A( X$ j;;
记录该turtle的邻居节点的数目6 P/ @9 }# I8 L) V/ q$ W7 G4 P  c6 B! G
trade-time5 c8 c' B' I( T+ k
;;
当前发生交易的turtle的交易时间4 X. x2 k3 J& M
appraise-give: L4 k+ W. z  n4 v5 R0 o% j- t7 P
;;
当前发生交易时给出的评价' b2 Y9 j0 f9 j0 Q) m; r7 m
appraise-receive; c7 D- A9 y' J3 q8 G5 {; ], P8 c
;;
当前发生交易时收到的评价* Y  Z( v- Y5 d9 W
appraise-time/ a' s" G9 o. B0 Z
;;
当前发生交易时的评价时间
% z: l5 w  q* u. }8 }( p% r: vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
: T" u0 b' ]2 X% k& O$ vtrade-times-total+ v9 |: @% [8 d4 y' ]
;;
与当前turtle的交易总次数$ X) e% p+ a4 z" r/ \( H. B8 v
trade-money-total  d# w' \1 k3 _0 }. A
;;
与当前turtle的交易总金额. M& G+ P( X: j. u
local-reputation
: G  Z! X" n* k9 aglobal-reputation& s3 T& |; E* }1 t# C$ [: E* I" X
credibility
% n& l* \% ^9 B  m% |;;
评价可信度,每次交易后都需要更新
  _" T* Y- K" F' u/ fcredibility-all
5 {  e6 H$ N+ F' h, p;;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
+ G" B7 ~- F: G. y! j: A1 F
+ a/ R% F3 O& v;;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
- @8 `1 X, z. L; Y; Z& b0 Lcredibility-one
- u, R. W! u/ J, m9 \% S; f! 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$ \  T+ n1 k" h
global-proportion
" f3 N4 ^) @& ncustomer
4 F; t  a. O7 G0 z+ V; M$ y& Zcustomer-no
4 \1 S9 c) ]5 _3 p3 b5 Itrust-ok9 k6 Q# y. d- E- d4 v6 Y* s
trade-record-one-len;;trade-record-one的长度6 H. _- s. @% z, h
]8 A0 \( r) N) h; t4 {

7 g1 _9 ?  N" E  ?;;setup procedure2 ~  }4 q0 S4 c9 I

9 [% B. B' C. i; W" T: Ato setup' E  u: ?, M# D  S2 @4 }' L
. a* C1 m3 F$ ^  p; ~( n  d" S
ca

/ N  G4 a; H- \1 i! ~2 \- b6 b& Z, B# I% c; o  p' Z; A0 e9 c1 m2 z
initialize-settings

2 j8 Q; @. O6 [! J$ k0 X& T$ e* s+ k2 y8 d5 V
crt people [setup-turtles]
- A3 z* s6 ?4 Q

% H; Y, L& t- e! v+ |' Breset-timer

8 a7 V- b' ~4 Y/ \  P1 l( Z% c# I# j( V
poll-class

, h3 C, S, z5 S7 V3 v% [3 f
% P7 r/ P. G+ b0 _" o  j; Xsetup-plots

( r/ x7 A' M+ x6 W+ S! F6 J6 n- N0 B3 D1 C, K1 j
do-plots
2 ]7 U/ G8 ]2 \( f
end
  ~! }  C1 i) N
1 j$ Y5 `0 h9 a4 o& `8 x) S# Z: {- Cto initialize-settings% f) O0 }" r( d$ b0 b5 M

5 y4 Q2 C) B" J& u) xset global-reputation-list []
- K7 v0 T/ \0 ~/ q) x
% A4 ~- H3 Q2 B! ~
set credibility-list n-values people [0.5]
0 }6 G' U  ^( \* E! B9 `# u( N' z

/ ?5 o; _1 W% \9 N  oset honest-service 0
. h; n: t" m8 ]- i8 n3 @% I

% o: _: r' g7 K& B) E6 Uset unhonest-service 0

. B" V% q" G9 z1 _' h- K* i# O4 W. q2 u5 n) \' t1 c6 }
set oscillation 0

2 {* F, d6 A' ^. w+ B: `, l# H' V% c6 ^, R, V- R
set rand-dynamic 0

  b4 f7 N( F0 Q" k5 send
$ X  V' F0 Z/ C( I3 @* ?1 [3 M" |* f# N
to setup-turtles
% I# v1 y* N/ `2 i0 P( m' P: k9 `6 lset shape "person"( I) @+ s  K1 i+ \+ s, J
setxy random-xcor random-ycor
4 H) P, C5 J0 i* z6 dset trade-record-one []. M1 K% q; K) u0 p

3 N7 q* \' D) _# _5 s! Qset trade-record-all n-values people [(list (? + 1) 0 0)]
' N6 b9 U  |; S3 d9 j) D8 {
+ M  G( O7 y1 T- R  m. T1 H% U
set trade-record-current []% x' a0 a4 A7 a' R
set credibility-receive []" I' A5 K  r% f6 ^; T9 f! A% A6 x
set local-reputation 0.5/ V; M5 a2 I9 h: o
set neighbor-total 0
, @; f6 c  F/ Iset trade-times-total 09 x3 h, b. Y- v: g# |' |: Z" X+ [
set trade-money-total 07 {. ?6 H8 r! G6 |$ J4 i
set customer nobody! g2 I2 v# X8 [! E
set credibility-all n-values people [creat-credibility]- U2 k. \0 P) v( v" ]
set credibility n-values people [-1]
# c$ F: ~+ B3 e/ {# Y4 }get-color
- O, b: L. {/ G/ a4 R3 H; l4 L

5 K! _' _8 u7 o$ u, j3 Zend
7 v8 q, }( h" Q! u8 Q/ `' H4 ^3 x3 D) z7 b' ]: ~4 w& D  l
to-report creat-credibility( w+ c5 m) l- q& D% ]6 \  n  T
report n-values people [0.5]
$ F) e: |) @; t; ?5 {& ~end  L  e+ A' D  _* E, e

; J( w7 u* I! t: i' u' `to setup-plots: l) [7 r2 |  ~, x

& _- u& Z; K* L; @set xmax 30

5 |" [6 {2 X) w* T, \- s" `: M% |; X9 x) j
set ymax 1.0

: K! r4 L) M/ o3 [0 N/ N" [
* \, r9 }7 c0 Q3 F* _clear-all-plots

: X! u# z% r, v0 e: K5 o8 z' Y5 t1 j2 G- b% L
setup-plot1
, t) }' o* u8 P9 b5 J7 n! E
7 V: C* V' M% x* l9 r
setup-plot2
$ _0 F# S7 p7 B" G7 G

3 ^# U) B* Y! Z' Csetup-plot3

. J2 q0 w1 Z9 U- Qend
8 N7 S8 ]+ K- N+ r  a$ G; [0 ]+ D  y( g4 l0 k" _! e; ]4 ~
;;run time procedures
( N, X* ]5 X! `% @0 l( \: c3 f  U2 F0 f: x
to go
/ ~& T2 g' W2 n2 a. V% G
9 s$ Z- ~. |3 k" Kask turtles [do-business]
, p6 m+ {& o* o: a, k2 _
end; p6 x: a9 T* G/ t3 V
) b+ f2 v0 D. C, M
to do-business " S2 y! C7 ?+ T# R8 n; E1 A4 q
( m) D0 A5 V5 d

2 C1 S" @$ [" \: M2 i5 l: V" q0 z9 hrt random 360

/ y; ~8 o4 x$ ^# `1 H, k% T& ~4 u1 w; ~! G/ T
fd 1
0 K+ p( m+ D- P& v& Q8 f
  e& s  H' _* p- A3 c9 Y
ifelse(other turtles-here != nobody)[
9 m+ H+ u( U; z( G" p2 O1 p% x

8 R: D$ d" z5 g' L! Zset customer one-of other turtles-here
4 W, `; P( A7 x* V0 G5 W
; F6 W: c6 V6 W! n: t' I, \
;; set [customer] of customer myself
$ B7 |! A1 Z+ `4 y* z
; l, S1 ~7 q6 v
set [trade-record-one] of self item (([who] of customer) - 1)
" L" j8 ~/ P' h$ e9 ]( U% z' R[trade-record-all]of self
# U2 e0 n5 e% m- Z- Q: A. Z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. u9 R  ]5 S2 A
4 y  |0 m7 H9 z& q) \+ `* g: B
set [trade-record-one] of customer item (([who] of self) - 1)
1 p" l1 s( t, q1 H* K* B[trade-record-all]of customer

; R2 Y6 H. ~4 U3 ^5 }& C2 r
$ F* O& ^' j/ eset [trade-record-one-len] of self length [trade-record-one] of self
2 f! J8 f8 M. c+ X  _+ }' A

" R) F& |2 t. Hset trade-record-current( list (timer) (random money-upper-limit))
) R$ j  O' p" j- q- X  i2 E  n. G/ C

( j4 }' ~; I) n* c  A* u3 j: Z/ O( fask self [do-trust]
& }9 t1 o! L) n9 H( I;;
先求ij的信任度/ R$ t) N; S5 X: D
" y2 n1 }( u& d, S
if ([trust-ok] of self)/ S$ k" A4 R4 J& s- o
;;
根据ij的信任度来决定是否与j进行交易[
2 k4 t' W& _3 i4 C) xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' c) c  X) a( j
# g  F0 b# C" W" ?) ?& ?' g+ g( S/ h[

' O  m8 \8 b" e$ G) g; B2 a+ ~& O/ g0 _/ B# {
do-trade

! c8 i; _- e  T, `, h
: \/ c) J- \7 a, C+ K5 W( u4 ~& zupdate-credibility-ijl

, d" s) {1 n2 j, `% x$ j
( _7 n( |0 {% Nupdate-credibility-list! [$ R+ E6 U7 u7 V
0 c" L5 e$ r" R0 T
9 |) o  m7 K3 E
update-global-reputation-list

( @2 c! l) R# Q, x
+ c' U. d8 _- T4 t9 |+ b7 \8 @# fpoll-class

! s" l# a9 L0 {' W2 V( Y  D$ N1 C+ S0 ~0 `2 L" ~/ b  u
get-color

. G. q+ Q7 n. s0 C7 b) Q  C, V& X+ I3 h: c
]]/ Z1 O9 E* V' {9 L

  ?) C, g) v, _2 o) Y/ n. b2 _;;
如果所得的信任度满足条件,则进行交易
  J$ ]: v1 ?5 z2 S+ N0 s0 A* [( ~) K; `# j- k9 \3 t
[
, {5 k6 q6 }1 e

; s0 X# M! o$ S1 Q2 q! d3 i, P& ^rt random 360
" E$ o- z5 D5 x
5 n  t& e/ l/ b% _  X- a. w
fd 1
( `2 S8 `! B0 G9 z" ~' p9 h
0 v4 b7 @% x! L( _% Y2 J; Q0 A: U
]

. E; B8 a" w, x
1 J, E2 n% T7 \- f" p) G% c$ B  }; dend
" k8 {' W2 Q/ Q7 M
7 k0 Z/ S: m9 L1 D2 |) A& x
to do-trust
' J' |. U. \* l7 cset trust-ok False
8 G: j; v1 y+ Q' h) e$ \+ [0 \. U+ s, R; k! U  w: Q

5 l# s7 p3 f. p: B* dlet max-trade-times 0
0 _; Y% t: P0 d) Fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. U3 A2 k- g5 s$ e
let max-trade-money 0
) [( m& k+ L6 Y; _, m) c$ V6 D2 cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' V: X  Q1 a/ |0 M/ `6 W, }let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 u' d* w# C, H6 y, y' Y
+ }1 _+ L& v; b6 Z

2 |/ p/ J9 e( t1 Aget-global-proportion
! @/ E1 K5 V* llet trust-value7 X: B0 E9 e6 \2 w2 E4 Q
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)

* K7 P7 Z# ~6 ~; }5 }5 X& Zif(trust-value > trade-trust-value)
1 b9 V' u- H! \- X4 v) m1 `[set trust-ok true]& t7 [9 G+ f5 [* F
end
8 Z+ |, o7 f4 E5 P$ j3 `9 i1 V. W
to get-global-proportion5 _0 z: y9 K" ~2 `) W( l9 N
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 C; G+ ^% O% N! a+ R[set global-proportion 0]
" F0 V# S2 C; h+ Q' D& I8 o) y[let i 0
$ ^$ k  N) y. D" {0 l6 Olet sum-money 0
& H$ q2 ^* ^; m& w# f2 `) Iwhile[ i < people]4 j2 L) I! _5 K! C# Z" w
[
; Y3 {6 J/ L8 c9 Jif( length (item i
2 j& x$ H# b  e[trade-record-all] of customer) > 3 )

, y9 `2 i$ c1 n, I- [5 x[, L" Y! I. }* A6 ^, J
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 [6 u2 j. ]" I$ n& q' w" U]/ t, l+ }1 ~6 [; f2 ^
]
* }# _* G7 n9 ?1 J) alet j 0/ `4 V) c$ q. U4 g+ Q: b
let note 0
  G' Y* D3 ^* Vwhile[ j < people]
0 D$ A# M- t1 z7 }[
, |! c# z" s& h5 D" ]& F# ]4 {if( length (item i8 i8 U, G' u' @0 F* z" P9 I& @' w
[trade-record-all] of customer) > 3 )
1 O7 N& G0 q4 x& K3 e+ P
[
( Q  K7 u: S' }5 F2 Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): N' r& N) M; V$ ?
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], P* G7 J/ h5 Z: L; b
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 j& l6 I  G) c' C; B! t
]: r3 n1 b! q5 D6 {7 ~
]$ }( w5 C8 x, q+ X1 x. r. S
set global-proportion note/ S8 `+ H2 S2 B' M( v4 V# y
]
1 ^- C% r7 e& S& Q8 l* _end0 Z% P: t, Z; E0 {

9 p# j$ N. d( x6 v$ l& g. q5 Jto do-trade) D4 f; t4 Y: R4 v6 p. m# q) G/ L
;;
这个过程实际上是给双方作出评价的过程
% j6 x' P$ f: E/ [# Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  ?3 D2 @; H& {1 z1 n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& j- S& {; |/ r: I6 Cset trade-record-current lput(timer) trade-record-current/ c$ N  S% J  Y6 b
;;
评价时间$ v6 b' F: o+ V4 [" @# C% u( f4 g
ask myself [
9 ?& C4 {/ G5 m1 w/ t7 Lupdate-local-reputation' G* `$ W8 m4 K* f
set trade-record-current lput([local-reputation] of myself) trade-record-current
* H% Z/ L$ k' ^! i  }7 R5 v]
6 t3 f% Q& D  g$ w/ ^1 Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& g" k/ y1 W* B' W- f
;;
将此次交易的记录加入到trade-record-one" z! x9 ^4 Z  p8 t& B; a! a2 t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# l1 P; x. \4 v* j- rlet note (item 2 trade-record-current )2 f% t- E$ R% G9 H9 s8 ?9 d
set trade-record-current
% {/ s' g% M% g9 f& |(replace-item 2 trade-record-current (item 3 trade-record-current))

& C% a$ a3 X2 H7 y- n! I/ hset trade-record-current! w5 c3 Q5 k. e
(replace-item 3 trade-record-current note)* n- z* m* z) a( Z1 D+ F, |

; K2 {! Q( |6 G5 w( M. d" H

3 }) Z- ]7 E5 c$ A" u- N( |! c" g( Qask customer [0 y# H* X. X. ^* P! S
update-local-reputation8 a) [& Q+ E; r. [! _
set trade-record-current
* J$ H. R1 i. h! u8 j! G0 i. t(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ G& t7 J9 r9 F: U. G9 Y9 x]; n  v/ O7 f3 q% |$ _, J1 e

2 C5 e# ]2 l2 Z* b4 ]+ t) ^4 Y5 b5 M5 r
# m, n1 K/ `6 i+ w2 r7 B( N& f6 r
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& k5 j' V, J9 J: Z

; `. ?' i$ j7 W# M( W$ zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 I0 W% c8 R/ I4 ~$ |1 u;;
将此次交易的记录加入到customertrade-record-all
7 l* V& }+ i/ o/ [, O) send
  @4 ^2 [& A' i2 }; X3 Q/ N) {- u' d$ U8 w7 P2 y
to update-local-reputation: O" I/ k  u) I7 m: v' p
set [trade-record-one-len] of myself length [trade-record-one] of myself
- m0 Z6 i% X) f' k2 e( O
& Z) Z9 y3 X8 O3 L! c
4 F9 u1 S7 X# \+ S! W- l7 w;;if [trade-record-one-len] of myself > 3

+ ?1 V5 H6 N5 ?% i1 v5 w" Pupdate-neighbor-total
( O+ J1 [6 D' w4 i' r;;
更新邻居节点的数目,在此进行5 W6 L1 {2 B& b9 F1 f4 u" ?
let i 3& [2 W: i- M5 T+ e' [
let sum-time 0# s* k" }( E, m- x  g* X: |
while[i < [trade-record-one-len] of myself]
# O* Z$ t. w# _6 B4 m5 [[
8 o- t1 p) E& M9 hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& u# l! P$ m/ r) h& Iset i$ v( ?6 A/ O6 w' M: a) ^0 m
( i + 1)

3 x. G% X% S" Z1 X) z" |! O9 U]! K$ G+ H; y, b' }; l7 X
let j 3
. S1 b% v$ e* H! k8 k) v" x1 t2 dlet sum-money 0- ^) j0 r  e( y! y: ?0 I$ `3 z/ L
while[j < [trade-record-one-len] of myself]* |* ~5 X1 ?- i
[
5 e+ s3 R8 _7 X' a9 O8 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)8 P' S& b6 i, F( t
set j
" A2 o' p+ P3 a: Z2 Q3 b- a  E( w( j + 1)
$ m, N  ^: @0 i' P4 q: S2 r
]/ J/ [5 p: W/ s5 G0 d% h) m) ?1 W
let k 3
; m( Y; x9 Q: S1 \" t: Q" Slet power 0
+ M2 n4 h9 Z# {& w2 t9 G/ Wlet local 0
3 K/ a: t7 C! s. @while [k <[trade-record-one-len] of myself]( p2 v3 a, G+ U
[
9 s3 T9 Z+ @: z- e& @% Iset 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) - c* }, }0 O3 _: C2 [! G0 j8 Q
set k (k + 1)! }7 {; r( L* ?
]  h: P! w3 D3 J, i& h( y! ?/ A# _6 h
set [local-reputation] of myself (local)
( v. H( l7 m& I3 [: I8 Kend
& r: B, P& b% ^2 ?  {+ |3 ]% c- H5 [( W3 d
to update-neighbor-total
8 O2 K! N0 ]0 g9 g  w* S
5 Q3 n) x' }7 A4 f' r3 i. Lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ d  D6 I+ f6 M. _& w8 l

6 t) a* @( r+ \; Y/ t6 r
! J8 r+ W1 o5 f! |8 ^, L
end0 R- [) O5 |7 ^$ v; @8 B6 Z

" e) m- m8 n9 h- Sto update-credibility-ijl
# Y3 ^+ x5 }" t/ V
0 Q- S- F8 D1 ]% k;;
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。. L" \  S4 g) s: k( {4 E! n
let l 0' t% ]5 p( I4 X3 u7 @) ~
while[ l < people ]
3 u3 c) m0 o, r( i' e;;
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) x6 c3 v0 V* h# _
[4 ], y2 L4 N: x( m2 D
let trade-record-one-j-l-len length item l ([trade-record-all] of customer). W+ n1 x4 y8 k( D: f( A; I
if (trade-record-one-j-l-len > 3)
3 v% A! o+ ]- \3 M; A[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( D8 s& w  a* P' X6 S& P
let i 3
$ g0 ~  Q9 }4 D% m/ @let sum-time 0
$ t, ~8 I2 `# iwhile[i < trade-record-one-len]
# f( K( W% f+ R: U[
# g; C5 m7 `0 t9 m1 Kset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 s" m7 V7 |% B/ T8 z5 l
set i
0 y, O3 q% d7 w8 b. v( i + 1)
2 D) r& O& n" F" c& {& g9 ?/ O
]& C( N  p6 ?, ?3 G" h! b8 x  |
let credibility-i-j-l 03 R5 k4 P" U4 \; @
;;i
评价(jjl的评价)7 m$ U9 K& C' j5 x
let j 3
1 k" S5 h# l5 @8 @# olet k 4
3 W/ k( g0 x9 g1 n0 Q: ~% Q- Wwhile[j < trade-record-one-len]. G# W' L7 P2 g* L6 d
[1 c- o- V3 i( E" F! R
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
( f% {& I4 S6 Q7 ~. N2 uset 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)% L! `; S8 W1 q: b0 J. c8 M
set j
8 [' ~& \9 c* m: ~+ b( j + 1)

8 }: N9 r  h  H$ T) J/ q]  d9 n! X( }# n' \2 R3 K1 ~
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 )), i3 H* ?" F6 I# m

8 ], `" z4 j9 ?- J1 R

7 f2 j4 B, u3 x# Z( Clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( {( w4 T" w- e;;
及时更新il的评价质量的评价2 c# }9 v( s, @) y- `9 [  }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ l& O; S& ]# K  A8 d" Yset l (l + 1)2 B( j8 J  u. `  S" Z+ D& V- @
]$ l9 I; f# K. p4 c6 v
end
' P% @/ }2 F6 b3 @
7 i. O. {, |* W2 _6 j3 M- ^to update-credibility-list
  H4 G' H" E* z. R" o( }, a+ b, olet i 0" G, e: L4 `8 J" u* o
while[i < people]0 X% e7 Z  h: U- n5 M  O
[  K  b# j0 n8 g) z2 ~! u8 O2 I
let j 0
% r, B, C$ h8 o6 m0 W. N4 o( rlet note 0% T* z3 o3 x6 ~' _' h
let k 0+ p. Z% d2 l7 D# n% y
;;
计作出过评价的邻居节点的数目# z, V+ ?: a: @! I& K
while[j < people]
* e  y  d! R( W* L8 e[
6 }: F& m! ?" t+ Z  a6 L7 Iif (item j( [credibility] of turtle (i + 1)) != -1)7 K) }2 v" K# k/ |/ ^. G2 G/ t3 C6 n* a0 g
;;
判断是否给本turtle的评价质量做出过评价的节点
, c% v6 Y8 l+ z( H0 I! F; g[set note (note + item j ([credibility]of turtle (i + 1)))
+ w; u3 J  G6 }( Y. c" s7 r* M" ];;*(exp (-(people - 2)))/(people - 2))]
& E6 f, e/ l" I' |4 n$ b) d& i9 V
set k (k + 1)" S$ z* H. K! Q1 F8 u. ]6 ^6 b) k* o
]! [" u# [. k9 N! H5 }: ~: B& w
set j (j + 1)/ \- Y3 h! {, R
]
* R" l* c- n/ y) t/ N) d+ ^9 ?set note (note *(exp (- (1 / k)))/ k), z& [6 Z5 U, ~' [# O5 n
set credibility-list (replace-item i credibility-list note)
5 d$ B5 s6 A: lset i (i + 1)
" a* f( i8 `- J]) m- r; \; ^8 c+ x2 k6 }$ W# K
end2 F6 r3 P: F' \

4 Q# @% B& Q  u# P& K4 q2 h, }to update-global-reputation-list
1 v) q/ ]. c, e; [7 m- \9 b/ j1 y* @1 flet j 0! L: i) W% F+ y
while[j < people]; @7 }& M/ _* }- Q$ F
[* n( r( e7 a- j( _/ E6 B( T' y
let new 03 e. S' f6 }. M% \
;;
暂存新的一个全局声誉
& y6 Y. M+ l8 ~. llet i 0
0 |) Y$ ]5 E7 e, Wlet sum-money 0
& @" A& {5 H3 {let credibility-money 02 ]" g+ y8 g- Q! d
while [i < people]
1 b) o6 X1 L' ~* I0 i/ W& X. f$ W[
/ s6 O1 I9 ]5 p4 Q! N( ^set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% g$ J- s- A! j$ Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! |$ s7 a) ~2 s1 k# e  dset i (i + 1); F. q8 s4 T  ^+ Q+ E* x
]
( t- C9 y/ y$ X4 Glet k 0' h5 q9 R# z9 `) x$ j
let new1 07 s7 U1 y3 h. O% e7 v
while [k < people]+ c: B2 E) U& M% a7 Z- p
[( G% g3 q; Q) L  i9 {  m
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)
0 J. J& d; z: L  ~set k (k + 1): q$ g+ r0 p8 E# k/ Y
]
/ V. l4 Y9 _: [; V3 R& O/ rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 @9 `# F: U3 `7 ?
set global-reputation-list (replace-item j global-reputation-list new)" t+ S/ u5 a" A1 C$ x* z+ Z
set j (j + 1)
  ]/ s2 X5 J8 [8 ^" p]. E; m7 s7 E3 h1 ~6 a9 }
end
- x  B# K. o+ m9 ]( q& j, d/ o1 J. N# ?+ [/ s( g  r: x9 G
+ ]2 i) \0 N  @! w' [2 }
; K4 G- j& [+ B- `' b, r( G  ^% v* K
to get-color
, x  }$ G7 P' o- H/ [& L% N6 x6 v7 ~2 f0 d9 n; x* |
set color blue
4 a) g' K" X' k( x7 X- ?9 `
end) K( e6 X8 v5 N& a! u  s

0 Z1 u% n  J- Mto poll-class$ X1 r" B' O0 n6 a
end
3 W% w. Q# f3 r0 g' d1 ^9 ?+ h$ Q& }; c
to setup-plot1
6 g8 @& D* b+ Y0 c# [% `5 m+ u; d" Q' C+ ]/ t! W/ k
set-current-plot "Trends-of-Local-reputation"
' l" Q! S2 Z" o4 m! h2 @# T- M
- `2 ]4 i8 ]3 \- y
set-plot-x-range 0 xmax

* I+ @- g. ?& P5 D' M! R( `$ r! v" k+ v/ H) R$ x- g6 Y
set-plot-y-range 0.0 ymax

% x6 Z8 B" ^  g& ^end
5 U3 {9 \3 G' n! n* |4 e$ T6 ]0 z) E
to setup-plot2& @5 c  |, a3 R! k

7 ^3 [2 b6 r! Kset-current-plot "Trends-of-global-reputation"
; q1 ?2 _8 [4 s1 f
$ R/ [( n9 d( i- a1 t
set-plot-x-range 0 xmax
, S$ P; S4 {8 J) {# H
( }" [4 N; f& C8 O4 |6 L$ n! i
set-plot-y-range 0.0 ymax

5 M/ v9 A4 v9 j5 V" ~) Oend9 x) P, h# z  O% W, j9 o* r
8 Z& N( |: O7 L5 t9 l
to setup-plot34 ^8 ~) v3 C7 ~! O9 O- I9 k
# W/ A- [9 \: N7 I1 B
set-current-plot "Trends-of-credibility"

1 S* S: |6 k' ]) }0 ^3 l  W) C1 H# U6 s/ M
set-plot-x-range 0 xmax

* ]0 d1 `9 g" q6 e" D6 X5 B5 k+ t+ \# ]  [* d1 S" T8 c% C
set-plot-y-range 0.0 ymax

. H! ?- v' c- o/ G$ Yend
9 @/ Q! z- u6 X5 {( B$ j. w9 D' g! o, L6 [
to do-plots6 Y; z& m. m8 a/ N* B
set-current-plot "Trends-of-Local-reputation"
3 n3 @7 O" h% d" Q7 t0 f- T  r( h# Iset-current-plot-pen "Honest service"
0 E+ l/ c' U$ I' \0 |5 j' r& e& h0 D/ R7 Tend7 m. d9 _# w, x  S8 U
5 E  E/ Z+ w. Z; j1 l
[ 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.. n% F' V9 V8 j& Q' @& W
3 e+ B: _0 P0 |, T
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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