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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:
/ {  e' C8 B4 nto do-business ! Z( K8 J* `2 B7 h+ s6 j! Y
rt random 360
/ `+ L6 e9 k7 m& B. f4 N) Q( y fd 1: S2 t8 p  f  c2 r9 V( R5 x
ifelse(other turtles-here != nobody)[
4 W1 d/ u. H3 T4 c   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.
8 F8 B0 e& {7 D3 C6 V# e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- o0 |; I2 z8 }/ _   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# P- C% |7 w  B( O   set [trade-record-one-len] of self length [trade-record-one] of self! V# v6 y( x/ y* a) L9 P
   set trade-record-current( list (timer) (random money-upper-limit))
2 x4 v  c7 [2 U$ n) l  ~" y" W2 @; g% ?
问题的提示如下:& g4 b& V9 p1 m$ `  E9 e9 q
0 k. R4 I) {6 x% `3 L) t( |
error while turtle 50 running OF in procedure DO-BUSINESS$ p* m  T1 P( `1 e
  called by procedure GO6 Y6 u5 J3 D9 e
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
( ^3 N  A) H- [3 `6 d) C
(halted running of go)3 t, u& B! p7 b4 f1 |4 v' p: L

* ~* G4 C+ j* {$ x4 |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~~
) f* [+ [/ Z3 i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
: B/ X+ i" t( A/ K0 l$ Rglobals[/ W2 F: L& Q7 L+ p9 k
xmax7 _( Z/ I( u) m% h3 r" n' x, k
ymax9 V( C% S5 p, o& ]( ~
global-reputation-list
, O' B: z% D1 s# z, E
! z. {: R4 V3 C# h9 y% X( J;;
每一个turtle的全局声誉都存在此LIST& k* K. C4 h; s. P- [2 i
credibility-list7 _- r0 |9 B4 l+ t2 d- q
;;
每一个turtle的评价可信度
# l! _$ {) R4 D0 Ohonest-service4 L6 r' U# Z. O9 W8 e5 ^- H% ~
unhonest-service5 K, J$ j6 y- z8 r
oscillation' y, s& _- w. @/ g; {' }
rand-dynamic! Z4 q7 T' k- H6 R) n$ P$ {7 a
]0 H9 g3 ?" [1 d  q
; A0 H8 t8 b" G  q  b
turtles-own[: i4 i8 A0 a# W! S0 I3 ^% H
trade-record-all" h7 R' \4 W0 O, M2 H
;;a list of lists,
trade-record-one组成
7 v/ D6 B/ L* E) [% mtrade-record-one* n4 D2 A  S' [& V7 l+ T8 |5 l
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ u- V2 @" T4 A" k& t3 R
6 h/ Z, U' h( Z4 C
;;[
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]]
" S/ A- v6 A, [# ^4 rtrade-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], H1 B  [* r" g) C  [9 {
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; s7 }& D" o! W
neighbor-total7 F% U8 R- r1 G) T; `
;;
记录该turtle的邻居节点的数目
% Z# D8 r) B% U. w& mtrade-time# y! D& e/ V/ {
;;
当前发生交易的turtle的交易时间
& c, e; K: |4 w! _appraise-give& K. W8 O) v4 X6 |
;;
当前发生交易时给出的评价
9 D7 |, B: e6 o7 `appraise-receive% S2 e) x5 ^* O
;;
当前发生交易时收到的评价9 Y: v6 [- x6 {
appraise-time
8 }. ^9 p5 i; b% U5 c0 P. D8 P;;
当前发生交易时的评价时间2 }; R) \, ]+ ?, i: d
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% ?9 h. b' m, x2 Q  I9 ~9 C8 [8 i
trade-times-total9 Z  O- [( L3 }7 G' W, f2 s
;;
与当前turtle的交易总次数3 Z  H2 F; u& j/ A8 ]7 g+ O% t
trade-money-total
# `/ j9 {; ^3 x;;
与当前turtle的交易总金额
1 U5 m4 k/ p8 g! u* plocal-reputation
  j5 [9 M# x* I4 Aglobal-reputation
0 x1 {- t% p$ n( ~6 lcredibility
" a5 |/ Z+ w7 b, r" O8 g;;
评价可信度,每次交易后都需要更新  }8 z2 y5 u) R$ k& O
credibility-all
. q/ F7 K! c" I+ c3 F; l1 P. M$ m;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据8 F, U& M7 w, N. K1 l

7 I) _( o) ^9 b( S! h;;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% G" C1 V- d* m+ x7 F' M- k' _
credibility-one$ U; C9 R9 J7 g, x6 v
;;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, _3 Y0 z3 r5 |) @/ J
global-proportion
! q3 C! S$ I  S* f9 y- R" [( rcustomer7 t- L$ N8 E( z, n/ ^9 l' j
customer-no
: O+ P& u3 y  h! T0 L$ G1 _; A+ X2 d% ntrust-ok
2 l6 O* e5 H4 e$ P  S# i6 P* F! ptrade-record-one-len;;trade-record-one的长度
* `& \* G9 T9 P6 o- W]
9 [; U1 l, L# H- G( P; P/ s4 a, g5 ^+ J+ Z! z* g
;;setup procedure/ l/ j% L* ^; h- `+ e7 j" ~- P
  E+ X3 O4 g3 Z* r
to setup$ `% z6 l, u+ B/ F- D$ C
, e2 U! P' t, Y+ R1 @
ca
" }# z! c1 j. g

1 @0 f/ ^! z8 P+ I. m/ ]5 u3 oinitialize-settings

7 [/ f5 v. {3 P  l
' ?5 \$ {7 n) h/ h0 c; Bcrt people [setup-turtles]
. ?& `8 `$ i! B- H  w6 J6 g6 C

( K5 B) V3 j- G6 b+ p8 z" zreset-timer
* I- d/ F# C' {. M( f! z5 u

, ]$ `* Q( i# ^$ O0 ]poll-class
+ N0 ^8 G8 S! ~5 m9 v6 n

+ A5 g5 {; \7 W5 m( ]- L, Asetup-plots

# [  I$ `5 I0 h6 O* p/ f! S8 d7 v6 ^  B9 {  a; y) @" }
do-plots
4 D2 H. t6 }0 a, i/ s# S0 z1 Y
end
; }& @& I' e6 |5 H0 a' F( _; P
" q* \3 V5 t$ ?# Z0 T$ @' jto initialize-settings
9 [" u1 M" M, }9 m
, W) r9 I4 l- ^  yset global-reputation-list []
6 Q0 ~# h% m( `; e

7 y9 g4 O$ O8 R) lset credibility-list n-values people [0.5]
( B8 p' U* Q: t8 I& [0 k% r
: }0 H$ v  z$ |$ P+ d! O! h
set honest-service 0

: I. f- ~: E5 w% I! N- j+ v
2 \% i( V, F  F0 T. d5 E! Gset unhonest-service 0
+ I* }6 Z9 _  a8 Z0 P
. h5 P' L$ b* {! ^
set oscillation 0
- B& E: M+ N7 ~
: q4 i9 ?# l- v/ T
set rand-dynamic 0
6 p$ R5 M* a; T& W
end
9 [8 q6 d& ]# f4 j& v2 Y- \% }  J% ~" q
to setup-turtles , q( [4 ~" u/ i+ R+ P4 J
set shape "person"
& \. o7 A% I& Isetxy random-xcor random-ycor
% G) a  Z: i4 t& M. i" {1 ~set trade-record-one []" \, j, h8 q9 `$ Y. }9 u
0 n" H) \$ u7 M3 r
set trade-record-all n-values people [(list (? + 1) 0 0)] & k  l( o+ `8 h* y* A; d& |6 w

( f% I* I3 C, v2 s* ^set trade-record-current []+ p! X# z  n6 L( o/ [3 b3 n$ A9 L
set credibility-receive []9 O' Y! y0 _- R
set local-reputation 0.5
0 c; ?% c9 _7 Z/ n& a; Xset neighbor-total 0( n" ?5 x3 t" l9 p' ^2 X
set trade-times-total 0! }0 [5 p8 B- x7 b( G% W! i
set trade-money-total 0
: d. X+ T: D# F* z) Q1 D' `% ^2 t6 Q7 Uset customer nobody8 K* z* t8 @# p# @4 y) I9 {8 d
set credibility-all n-values people [creat-credibility]; r) U" d4 E6 t  {& H& [) |" Z
set credibility n-values people [-1]8 \0 L/ s, O+ u$ |# m/ v
get-color
1 D5 W0 n. Z8 @& g

' [! i3 t' g+ W7 A  zend
3 \$ |; V- H1 T4 t; V1 \8 t
: \( g& G4 g& n  a7 R: ito-report creat-credibility
' I% Y6 J1 `( r% N" z& \report n-values people [0.5]
, f' e; c3 P* }" l3 |. `end
3 S, {! F% P5 R  z) X( D
% ~; J2 R) \" w: m4 uto setup-plots
- r5 i6 m# N0 B1 Q# T* a9 L
- t& J. _* w8 G/ l: nset xmax 30
* L2 g+ G4 _! P- S1 h1 M4 Q

% h. b( Z! R% _8 B( q* Z' Iset ymax 1.0
/ Z! w, h" T3 `

: q* J6 I# \& L7 I0 D; Iclear-all-plots
4 R! _3 v0 D' J

) J, G% k# B& x5 }5 a5 Tsetup-plot1

, _; j' Z) D1 M' o, R. v1 D  D" W4 q# S: V8 @
setup-plot2
) z2 s9 M  ]& R4 |

7 B% }4 @4 q9 I0 Bsetup-plot3

) M. x# n! i$ S7 Lend+ F4 u' D0 y. S' i5 l4 l) b

3 d% L9 c- U2 f/ m;;run time procedures- D4 l$ x( E; ^- {5 [/ I
/ Y7 b( r9 G, n
to go2 }* O+ d/ F/ j- E
' H: G  D8 m4 ~) o
ask turtles [do-business]
% S" e4 Q9 U, Z6 c6 H( a9 s1 ?4 A
end
  z! ~) C$ e" l1 B! I) X9 y, x1 v* W6 E) C: O* f4 ~% Z" M
to do-business ' v7 Z" g: b" |1 y$ S4 {) g
7 s$ e7 `7 b8 `8 D3 |- f% u

, Y+ y3 ?0 ^! trt random 360

; X; b( N+ u" }; \4 \
9 R/ B+ X7 W1 Ifd 1

! @+ m' `0 o7 D+ G3 N1 L% H' z- @( V% v
ifelse(other turtles-here != nobody)[
' a( e8 E' _4 ^8 E0 T1 t
8 Z6 y7 w) p' r) k% f, ~
set customer one-of other turtles-here

* a7 B6 x. I' B; T, o/ x7 [
! `" `( q  Y. V( I0 s; {;; set [customer] of customer myself

- X! s9 ~* l3 Y- x. u6 G1 T7 B( m) B2 j$ L8 G/ K
set [trade-record-one] of self item (([who] of customer) - 1)# m. j5 M3 f! s/ h  e
[trade-record-all]of self5 z1 O3 x" i" v, h
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 V0 d5 i: b. I# z( |
" u/ E  w8 d, R) Yset [trade-record-one] of customer item (([who] of self) - 1)
/ i5 e; R' |+ y1 E& |' N  `) J3 w[trade-record-all]of customer
9 Y, t, M$ H) a6 [8 m! c
# g- _* }; L6 e6 F1 F  k
set [trade-record-one-len] of self length [trade-record-one] of self

, {3 _* H( l1 Q! k
% r# [7 H! D* V/ q8 o6 A) C2 sset trade-record-current( list (timer) (random money-upper-limit))
3 z4 _2 |. P+ S

3 Y' Y9 b$ l0 F! G6 p: Wask self [do-trust], _/ W0 M$ o9 D
;;
先求ij的信任度
$ I2 l" m4 m" A: w+ {5 G8 r, i' s7 {5 M
if ([trust-ok] of self)
; y8 E. P0 _# };;
根据ij的信任度来决定是否与j进行交易[) V; i, G5 A& s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 B) u3 E5 I# g; I" \. \4 X' _
* d3 z6 y/ `& w  z
[

7 R& R4 g/ Z; _1 g
! \7 D- y+ r. d  C: fdo-trade
5 l% L3 s4 k: A7 G; H9 @' [

) L8 I3 r0 F$ a' B7 S* V6 aupdate-credibility-ijl

, b0 ^. |9 l  i4 S, |6 K/ m
% y8 }* q* I9 ]7 jupdate-credibility-list: h$ y& R1 c" B/ U

' `* D. i* P% N) b7 B' G6 U) O( c/ v; T8 F, J  X8 T
update-global-reputation-list

- s. d5 R! x  v) l5 K9 c/ k! ]' |/ P: z/ ]9 u+ v( [8 @
poll-class

, |2 ]3 e: x. n+ Z9 E0 f4 ~+ x
8 L* A& [+ s; P0 jget-color

' A* w; l1 H, K
% V  D. f  w  N) g( b5 J. H* Z]]
. E2 t1 k* r$ C1 \4 z* F5 ], T+ [9 Z& z- t# ^/ x9 R, u$ b
;;
如果所得的信任度满足条件,则进行交易
: C) X. Z) ~( g/ A$ p* @% U& @, c
- j6 y- O% N5 K7 J3 j[

- P6 D9 k3 o+ j7 Q, x
1 M  k7 s% N9 o& Grt random 360

* y3 ]+ G* Z, q& u  z6 d( L0 R0 K+ U; L0 H
fd 1
4 _1 E8 h; z2 Z

8 X: Y- n9 E- J- R: Z3 N; P0 i]

, C* r  J- R  y, q& z& h1 l, G/ R: r+ B. n- \$ M. r; [; R# C4 y
end
  G0 q4 M) `  B1 Q% R+ Z
% m7 v9 d4 {  }- p
to do-trust
- m, V$ X/ W  |$ w$ r) hset trust-ok False; B: W& V- U0 U9 V3 a8 R( R. r5 k
" [$ D; V" g5 E/ b' l) f
1 d/ @  _% @9 H  Q5 X
let max-trade-times 08 }" o3 C' @7 @9 n
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 Q: p9 c: q7 A' ]  e
let max-trade-money 0+ k  Y9 |2 D: K- L' m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; L8 G$ u' A; k
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 Y2 A- o/ A( j+ ]6 k  v  O) q' E1 j/ t; q/ [. C7 ~8 }; O) d) V: _0 h
3 F* t6 _3 Q$ P- r
get-global-proportion1 a. Q: _& T  I. Z2 O( [4 F
let trust-value3 u4 j" K% T4 O% L" m' M5 \2 R
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)
# b+ u! ?, J' e, J/ V1 c- f
if(trust-value > trade-trust-value)
1 |" @8 F, i- p5 R" i[set trust-ok true]
3 D. L( {% r. L+ Fend0 x0 V! O# j' _/ D/ s3 J
  Z; y8 G4 A' }
to get-global-proportion3 q5 N/ a- h" L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' `& [. n9 ]2 N- N. Y[set global-proportion 0], G" k7 V/ ^# S9 ?# T% h
[let i 03 W' G2 S. ~$ R$ B. ^; V
let sum-money 0" {9 m3 [  q) }: w* @& A8 s
while[ i < people]
8 n9 \: Q8 e/ k$ e" {% `7 ]  b[
3 ~! n8 S. d+ }' O! c. zif( length (item i
3 @7 Y7 w- ^$ Y0 d[trade-record-all] of customer) > 3 )

0 W% f( C# g/ I6 I8 f3 n[
' m/ F8 ^' ?3 h7 q! O, j' N7 `set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# f9 ?/ D$ O5 z# ^! t, M" X]
6 v- m! B6 b3 s- Z]
) [6 X# ~5 W9 n* g( ^; ylet j 0
9 ~" J- m, a( w) ?; Ylet note 0
1 M; X) _1 f" S( N5 ]: Owhile[ j < people]
. U1 \7 W/ Y# Y0 ~, Q[
% y0 F, C' N' Y, ]' Uif( length (item i
4 v1 d, ~5 v/ o# z7 T[trade-record-all] of customer) > 3 )
7 q  W# ?; _5 ?# L/ a7 U3 S
[' z; x/ S; w$ u- M; N' Q% ~
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% @( q3 M1 h( T
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, ?$ c, D* ]# K2 ~* @[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ |+ \! Z/ |$ p- w
]* e9 T$ p* l4 u% L0 s7 w2 ?
]
  U, d- @3 Y, N5 T! uset global-proportion note& V# ^% D/ w" N& l/ ~& v: f. X
]9 U2 J. U+ r* D, j$ Z$ B! d- _
end( u7 I' Q* o" P4 W% X& T# q

# G; _! ]( H( z+ r/ T! I8 \to do-trade0 B. B8 O9 q/ {# N  }
;;
这个过程实际上是给双方作出评价的过程, J1 a- k; T/ I# I' ?% G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 {6 c9 x4 k+ [: S1 zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- N4 t, K- ^( Q4 }+ h- _6 tset trade-record-current lput(timer) trade-record-current
; S! }8 P: Q& b;;
评价时间+ _9 ^, I/ o3 |+ Z7 I9 ?- i3 S
ask myself [
/ m/ a+ s1 H% \5 R0 d, xupdate-local-reputation; A( ?- l$ L2 S2 A
set trade-record-current lput([local-reputation] of myself) trade-record-current) Q2 S8 O& f' @
]
- P7 D' \' h, W2 {set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! p% t7 L1 u+ I& Q' b, T% J
;;
将此次交易的记录加入到trade-record-one
+ d. M  n# A! u+ R# ^7 Pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& _; `/ F1 a& zlet note (item 2 trade-record-current )
0 }2 `$ m$ o, `8 ]set trade-record-current" S* G* S+ n9 I! h+ e; o4 A
(replace-item 2 trade-record-current (item 3 trade-record-current))

' k2 x/ i  Y+ M9 V$ @. wset trade-record-current2 q- G  T# m- ?. V' q: d" [
(replace-item 3 trade-record-current note)6 ^" z5 J- `3 ~; e
  b4 O3 \3 V6 b
. m5 n) P2 ]4 Z  T7 |0 j
ask customer [
5 M+ D2 x! S1 g3 T, a" dupdate-local-reputation& H6 p; o3 \  @) O  j
set trade-record-current
& G: N8 h0 F8 l2 N6 w% B! c$ {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% E" M+ c( g' O]
: n- G& [; N5 i: g9 E* s/ L' C' d- u# I/ ^$ S  \. X) f
/ r+ m: ~7 g- z2 w$ Y2 m6 W4 `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  F0 g6 Q9 c9 @9 E0 s. h& s' x2 x

9 V7 E3 b/ f1 p$ T; w% _' ^. \# u: ], Aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 i. ?$ v  ^2 d0 t, ?! {- [, K;;
将此次交易的记录加入到customertrade-record-all+ g; \8 e/ C9 h* Y7 Y9 t
end$ f  h7 k$ A, B
  j- J9 [! ^5 U) J0 Z: P( X: t
to update-local-reputation. p+ N5 L" y" F
set [trade-record-one-len] of myself length [trade-record-one] of myself
: K$ T& g# H/ a* ~' I4 A$ F3 a$ i! D* D: i: o

; @% Q& `7 N" N;;if [trade-record-one-len] of myself > 3

) V# s" i$ A# I1 pupdate-neighbor-total
, {. M/ e4 o6 m# @; L: a;;
更新邻居节点的数目,在此进行
8 O% z9 \! L4 r3 G7 W) flet i 3
9 u; Y) h- M2 f* C8 elet sum-time 07 b& p/ @& j' n1 _1 D
while[i < [trade-record-one-len] of myself]
) d+ Y# j8 m" M+ M[
& b% B' l  h( S7 x- o8 P( bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 o7 a. k8 i3 U
set i
; u7 C/ W, T2 z( i + 1)
8 m' x# d  L& Y) ^
]
" ?+ P3 W/ _1 r+ klet j 3. w6 N9 `- x3 ?, O; z
let sum-money 0, R) S5 I& `6 Y- [! [
while[j < [trade-record-one-len] of myself]
2 f: a4 x: ~2 D3 N: Z[& _# a) h7 L8 a) n8 y
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)
) R5 a' \- e4 J7 ]! zset j/ r4 R, N8 c7 }% U: d
( j + 1)
1 U* b! a0 {: c. n0 H$ X
]
! N. v9 d1 ]" |$ ~3 Dlet k 3* t; w) N  r0 k3 t& g4 @
let power 07 \  p: e! Y3 [( [: ?8 e
let local 0
6 x1 n' r- w; O* E: q+ l7 bwhile [k <[trade-record-one-len] of myself]. `, Z- D& L. ^; t) E
[4 c5 z$ g3 r8 }3 V: @" Z5 w) h
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)
- z7 h, V9 T+ g& ]7 M4 w  qset k (k + 1)
! j$ a; c: s) ~8 t% C+ H3 r]  `8 G0 C- m9 ]+ S- l, E
set [local-reputation] of myself (local)
0 ?4 Z' `$ O* D$ o0 m7 e* vend+ f3 Q$ B5 p, i: `, p9 i- u$ Q" M
7 C% d$ K5 E6 y  L! t8 {  g9 i
to update-neighbor-total
* k/ u8 w" T6 H% [6 P! |6 {# r  c/ _% j1 k+ F
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' U9 k5 [$ U% z# \) p
$ X" R! X8 y7 y/ T( y3 {& X( ]
# t& e0 q3 M9 @7 i' W: W2 l
end
) \5 \: B) ?" T: Q) m7 F! B+ ]- @+ i, |# ^
to update-credibility-ijl
- ~6 {+ N1 ]- d6 N9 g6 N
! R5 M. s  l" o* W% b6 H3 ?;;
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。
  x, e% P  o+ V: z0 x" Klet l 0
( d# \* U' M/ N# S7 C2 ]/ ]while[ l < people ]$ O3 \2 x2 u: K' ~
;;
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
+ h/ D; I1 D. z; b( [% Q[
( O% u5 p% D1 e' [# U( {7 |let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- ^4 @% Y& ^( a: M) u1 n# p
if (trade-record-one-j-l-len > 3)! ~" E2 [& j% a2 G! ~* [8 p) D- x
[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' C4 H  U& g0 }3 W" j
let i 3
/ s2 H) [) _* Ylet sum-time 0
! S$ ?, a' l0 M) lwhile[i < trade-record-one-len]; |2 ]9 s+ L5 o# A# k
[, u- H# h! A/ \  P' D' W
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; g# |4 y' `) T9 F- Q8 c# Vset i
' w5 R. X" N& O  H6 B  d% u( i + 1)

0 B9 L2 g5 u* {8 }3 r]) w$ u  K7 k1 Q* G5 K! N
let credibility-i-j-l 08 z& |, l0 w& f* Y- W' e, A, S
;;i
评价(jjl的评价)* V$ _* q7 c6 P" z
let j 3
  W; O" a% b0 B, n9 e: \let k 48 W  j9 `$ b8 X) S' K! h# {
while[j < trade-record-one-len]
+ @8 ?$ t5 w; k  ^3 k: v* B[  D" L; l* y3 F. }
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
1 t' E; p& K8 z* oset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)5 E  e  E& Q) V. l! i3 F5 @6 j
set j. g# g& C9 W4 _$ m# K. ]0 B
( j + 1)
( K" q7 p  O9 r' C* m; g
]* f- Q0 |$ n8 U; r; f( g5 r
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 )), A5 @/ t1 o5 |' x  a

. z+ w% n% B& m: A0 l

4 Y* l9 R% P" i  w. w  klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ B2 [1 L# k) x
;;
及时更新il的评价质量的评价$ j  b  i7 j! o7 n0 S
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 U5 d1 p- z" s/ z
set l (l + 1)' X3 b" T; {2 _; q# z/ w3 n9 k
]4 ?6 l  N) S3 a7 J) m  c+ C
end6 _. j/ q! i) z8 b4 Z

% X9 f3 {% ?1 B- S+ zto update-credibility-list! e; ^( s1 O6 n, b( C
let i 0
% G; e! J8 ]) ~5 E& `9 n' uwhile[i < people]
: [3 t6 a9 Z4 }( J! S[
7 q, B4 v9 a- v" Q1 R: blet j 0' T0 ?/ p: }" ~
let note 0
5 x" [& }9 K% Blet k 07 l$ q8 B4 r2 t
;;
计作出过评价的邻居节点的数目
, I$ f# G0 O$ N2 x8 Rwhile[j < people]
  K) I3 L; e  H3 A[
! K5 I! m7 [9 }if (item j( [credibility] of turtle (i + 1)) != -1)$ X& ^* Q( g2 ?! R* S
;;
判断是否给本turtle的评价质量做出过评价的节点2 R- n% ^0 \& \/ H
[set note (note + item j ([credibility]of turtle (i + 1)))+ U' U) D+ L; g) G+ [3 r0 i
;;*(exp (-(people - 2)))/(people - 2))]

- E- Z' r/ L3 Tset k (k + 1)/ h7 k8 q( ]8 }; x1 h
]
6 J& ~( h' ~# B' g1 qset j (j + 1)
0 L5 }; s& |7 [/ n4 e( L6 `4 U]( a* b5 W, q' L6 t
set note (note *(exp (- (1 / k)))/ k)9 |* ^, D5 V+ m  E4 D4 _( r
set credibility-list (replace-item i credibility-list note): s$ A( Q6 X$ o
set i (i + 1)  Q  U+ T* n$ k/ K# u( e8 ^$ u
]
' y3 w/ A4 A2 R% \5 pend6 P, k$ Q4 P# U
/ [" l2 S6 d" T0 D" ^7 E3 C( l+ z
to update-global-reputation-list
, V+ j$ N" h$ f/ `- A* ]let j 0
( {" E5 a# \# _" i! ^while[j < people]! T% [7 h# H! F! h6 F
[! i. t! D& h; \2 I- ~! a
let new 0
) Y- c) B( u6 S6 K( l;;
暂存新的一个全局声誉& q5 }' O" d4 F3 n( A* v5 d+ W2 M
let i 0, j# J% G2 c* d: m
let sum-money 07 O8 C! F; Q& N8 y$ F% \4 u
let credibility-money 0
  E/ w1 ^" i- t) o% ^while [i < people]
7 W, o. ~5 T9 f2 S[( E# D  D4 o: x# P3 y9 g. ?! l! F( m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 }' a& C7 w; X6 l5 s5 K
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 l- f, P; m+ U' _set i (i + 1)1 E$ H& `" j% S% w1 l  D
]: q9 ]; \; `: B% @+ H5 ^- [  [
let k 0
# `; m4 g- g! h5 D3 c8 ulet new1 0
3 a  M' Y! U7 I; {+ bwhile [k < people]; j. D1 ]/ g; }3 ^
[# L5 L8 D! n2 u7 r
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)
# f* F$ L0 F8 y6 P# zset k (k + 1)" ?8 j$ _# a& `! G3 a: _
]
. }, O- h) ^' Q& v$ Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 ~1 _) Y, Q7 i1 Dset global-reputation-list (replace-item j global-reputation-list new)$ W7 E/ K/ q3 A  i
set j (j + 1)
( ?5 H0 O3 W& c, J1 b6 E$ Y' W]0 k+ Z: w: P3 p) {8 Y
end: v7 }* V: Y3 n! X

! @0 T# u: ?& `
& W' w; }/ r3 X) S. _, n
& ]( S: i# [' y( _! ~5 s0 x) |to get-color
% _4 U& G4 U! k7 @, q
4 r4 C/ u% W) I) u1 w  X" Cset color blue
! L3 e& q/ b! q  y& w
end" s7 o- Y& _7 S5 Z( F; d

& A" n" m& ^: M8 s% uto poll-class
9 w/ c, S# U4 {' S, |; K0 zend) ]& w& E/ X2 M, J
6 }) `3 p6 _) \" J6 J% v' K
to setup-plot1
7 g: m7 e- z% S- a2 ?2 |5 G) {( [  E+ `  x6 R$ z. P  w+ l
set-current-plot "Trends-of-Local-reputation"

# b4 k& I: ^9 E  j5 P) n
2 M) W7 t: K$ v2 w, e" m7 nset-plot-x-range 0 xmax
! a" a4 P$ L3 J0 j' C8 b! D
5 H( f1 _! p! I; n/ N
set-plot-y-range 0.0 ymax
4 @$ {+ }! w5 ^% }+ V7 f2 h9 x1 o5 i
end1 `9 `) @, l( B  L) z( r

: r0 j. O& V+ A# u  l: Vto setup-plot2
# E% v  @7 d! G0 \, N6 a7 j
( R: L: A1 m4 e% Sset-current-plot "Trends-of-global-reputation"
' y$ [/ D1 `9 c& Q' N

% j0 Q; b# u6 K5 A, w  Eset-plot-x-range 0 xmax

' S' D2 g3 ^) u' G8 H" t3 o  o9 Y$ ?( x0 A! v+ O
set-plot-y-range 0.0 ymax

5 I7 k% d8 i7 ?- Nend
& R/ T* a/ j- v, d# p# J( l3 y: D! L* W
to setup-plot3
/ }! ?; c1 T5 M7 r( |" C+ y2 l% r/ e0 a- v$ p! T. A& v5 _
set-current-plot "Trends-of-credibility"
, {6 k+ d  q8 [/ r

8 w9 ?7 Z7 d5 `9 y' `, |& Gset-plot-x-range 0 xmax

* ^5 M+ A7 c' I& U9 w: G$ A; @( d- D# l) k7 y" g
set-plot-y-range 0.0 ymax
& h' ]& b# x1 W1 x' S- S0 P$ A
end4 b/ K+ T& j7 w4 F: [7 x4 G
$ ?( S# i( Z  h2 B8 {1 c' _$ [
to do-plots
' w1 e  L; n" t& _& i. Vset-current-plot "Trends-of-Local-reputation"$ P# n& o8 T) H6 M( f) W
set-current-plot-pen "Honest service"
( ^  E- {+ W5 d' iend
  Z. |! t* g7 L: C+ X  D! V: |% Y' K
[ 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.
+ u/ G) J3 j7 U
  J  x+ u5 l" }+ k2 |+ R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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