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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:- ]( u( }$ v. ~& `4 f
to do-business 0 @& w: [) F' o% \2 S; j
rt random 360- v8 K) F. H9 X4 P2 W$ `
fd 18 W. a2 A% A) c# m. V$ L! N
ifelse(other turtles-here != nobody)[
3 m- W  n7 m4 J   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
, J+ h9 v( g3 X3 y" A7 }   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 h. p/ |& N; M- r   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' M! E; _1 u; ~; v
   set [trade-record-one-len] of self length [trade-record-one] of self- F9 X: f8 W3 C
   set trade-record-current( list (timer) (random money-upper-limit))
/ {. ]4 H+ z; J4 {/ B2 F- u  L/ a0 N2 u* e- K' B6 {
问题的提示如下:
1 m. J& C2 `( N7 H' T$ S
0 f: w7 t7 W6 `  C# j" U3 {' [. @error while turtle 50 running OF in procedure DO-BUSINESS8 @- _2 y) {, v, P$ L; L  Z
  called by procedure GO+ A$ i# B$ g2 @, a4 t; b3 M
OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 j1 Z- H) o5 K  d5 u9 ]$ S) y
(halted running of go)4 v6 [# T) F; O; e: S
1 Q% J* t% u/ b6 Y) h: k5 _
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~~
. j9 ?7 p( p: F- {$ B! K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
! k9 N: R* n7 uglobals[
5 C9 P5 G: I% B9 b, C1 a  K0 Mxmax: U* T$ S8 s# S1 ?( P
ymax0 }2 t$ T! @. W
global-reputation-list4 ^- [$ {2 D+ a- x( _6 H& N4 u

+ p2 Q! v% Q0 a  e. W+ {;;
每一个turtle的全局声誉都存在此LIST
3 ^: ?2 c0 d% o9 {8 scredibility-list
* j5 W8 S* X2 y+ S;;
每一个turtle的评价可信度) Y+ ?* K: S1 J/ c' u- ^
honest-service6 h; t+ d4 X9 ]2 m6 y, u+ x
unhonest-service4 b8 S2 C4 K, ^; I, B
oscillation' w! m& ?  ^  @1 F% `, F6 G
rand-dynamic5 r' `  t8 j# f! m6 F
]
3 ~$ |4 L9 Z2 G5 `/ c9 d4 e6 a# E3 x3 j1 I, B: {+ g! q2 \8 _
turtles-own[
, |9 G! G$ L3 }* V! R3 h! b& Utrade-record-all- N/ x" H: D# j) x  ^# p3 m: {
;;a list of lists,
trade-record-one组成* k, z$ h, L0 k; R( d# ^
trade-record-one% l% E: }, P$ `5 V- j+ J/ P6 |. n
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 |0 X  @9 G$ i

3 E$ U  I! A' i* D) n8 M; v;;[
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 H' b4 Z. S5 u* j# T% }: s3 k/ ]  B# z
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]& G0 J! |" U  `; F/ ~
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
! ^# B: {4 ]. {% @% cneighbor-total# t# Q( J8 [2 G$ j7 G1 s5 \
;;
记录该turtle的邻居节点的数目
& U+ ~) G8 E5 v" i! Q  dtrade-time
* `8 n; j( c  N: k$ [; k9 {0 k  `;;
当前发生交易的turtle的交易时间: B8 C/ a. a( i3 Q! T( ]0 n7 E% X
appraise-give* c* b  [: e4 T+ N
;;
当前发生交易时给出的评价: s4 z- D0 x  q0 g/ {
appraise-receive
3 x9 b2 K: ]$ F5 ?* G;;
当前发生交易时收到的评价
4 i  C1 Y' \7 B9 J! c0 i1 lappraise-time2 V9 |+ L' S5 y- ?& j7 P
;;
当前发生交易时的评价时间. }4 T7 ^9 H2 c" G" ^' h) H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. P  ~3 y" @' N$ w
trade-times-total
/ P  z, m# f3 X;;
与当前turtle的交易总次数6 H2 C7 v6 p3 c; \3 a: I8 I
trade-money-total
" {& N# e0 Z4 _( {  `2 n; ?6 t" [: h;;
与当前turtle的交易总金额! ?6 [. q% P& ~% v9 T2 _
local-reputation
! R+ v3 y+ j/ E) D  N$ u5 C- Wglobal-reputation
6 f1 o9 C2 Q7 C! S' \& P8 v. Acredibility) v( j3 q. H: h; j& U9 B# i0 v
;;
评价可信度,每次交易后都需要更新
4 p4 \; j4 h' d# p4 f6 ~( z: zcredibility-all  s) U0 O5 U* I5 \
;;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
: Z2 Y' \* T6 p. `- O% r, W' U. S0 ^; Z7 n. S. _$ ]/ c
;;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
; t" L* T* j( J, B( c; ^  {2 Scredibility-one6 ~: n  r) E9 u. w1 @
;;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, G$ p% b% ?1 x+ p( f; ]8 Q) M
global-proportion* v$ t9 N7 ]# P" q9 f2 e; Z6 N
customer; _( i/ b1 x1 C( P( t) z" Y
customer-no8 H, j! i0 S1 d7 q$ b
trust-ok
# \! I; P& j# v3 r% r# V0 jtrade-record-one-len;;trade-record-one的长度
  P/ ^# J. \; R4 ]4 S; s2 e]
6 w) E. N. @" X5 r0 ?8 x! C( \, N/ P& k& U3 x$ [; S* T' y
;;setup procedure( ]# c9 @- l2 v3 m* ]# N
5 |6 d: X/ }( D2 i3 w  f
to setup: a% M; s' `, K- Q

; V- r# g% t1 Y  i( uca
  J/ a3 _6 i! a) H2 R8 F
$ C: ?/ G) l9 y5 v
initialize-settings
& _$ j! f+ G: M2 ~$ f0 _, b; q
; d  X& N, f7 _* u( D, N
crt people [setup-turtles]

$ Q0 l7 Y0 X) `5 o# n  \' \  C' s2 L" U- n5 _3 X+ Z
reset-timer
& \+ z6 E2 M, S5 M; |7 a
1 J5 _5 \5 H9 }" R5 q8 E
poll-class

& j' I9 u$ l( T; S* l
  i8 _+ t$ {# |* M/ fsetup-plots
* A4 N0 U. E2 _1 z' a
5 a, I  a( @- h6 k' I8 A( P7 U
do-plots
/ A0 d) |; O: l3 o" L0 Y
end
' ]' P5 E1 g. m; w+ |
/ @) t' R0 P+ I2 s% O6 r% |4 A* ^; A: oto initialize-settings# O9 I* v$ d3 A' E6 v
* t- t  s0 G5 f5 t$ }" j
set global-reputation-list []

# M. f: r3 m, \( Q# M. F2 X4 x) j& G% ~$ K$ f( m/ r: q
set credibility-list n-values people [0.5]
& k" M/ |1 c1 x# C

: e* ?, ~4 \9 T7 Q( Gset honest-service 0

7 i7 G6 Q" ^* B" k1 g4 C" I: H2 I+ i! A% S6 m! A5 H3 }7 g
set unhonest-service 0
  u, ^. B  ?7 g1 }( e
) M7 p3 Z+ s6 k4 \4 n; X
set oscillation 0
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/ [9 q; Z, [5 @2 U- n
set rand-dynamic 0

1 L7 x+ _9 D- g3 Q4 zend
% p$ L3 l% b* X3 f) O( p# k( w/ m& ^$ m
to setup-turtles
; k- k! B  I! W+ i9 ~) Uset shape "person"" d5 h( m* `% w$ ^$ o$ V7 b! w
setxy random-xcor random-ycor) I7 F+ W) k4 @5 E* B% x; w
set trade-record-one []9 n) H# f& C6 I8 n+ \

% |6 T2 A: E, ?1 ]: W4 c' o% H  rset trade-record-all n-values people [(list (? + 1) 0 0)]
; ]" \  t0 ^: v2 a7 R) D! b9 o2 P

( i0 g, C% n! ]5 ~$ i' ^4 f3 ~2 Cset trade-record-current []. w# p, E. t; {( A$ U  l
set credibility-receive []# F/ U% x4 b; A3 ?& E, P
set local-reputation 0.5
" g4 c3 z, o2 y) B: E1 u/ c: A' Qset neighbor-total 0
( a8 K( j, e# g" N1 dset trade-times-total 09 n, u4 H+ Q3 J1 T
set trade-money-total 0
% i( g# k3 V  C& C/ {8 D; C7 F* \set customer nobody4 ]$ k. @8 c; A2 W
set credibility-all n-values people [creat-credibility]' E2 e* x$ @8 K8 C9 L% _
set credibility n-values people [-1]
) Z" N! w) _, u; X: z" w- ~get-color
1 H7 ?" q3 D% E4 R3 `" y" `

9 [/ ~2 |0 p$ N& qend4 r+ |6 f( ]5 Q7 u

, d, F, F+ P5 }+ I! C3 |, Tto-report creat-credibility
; k1 @/ q5 s( v3 _, O( Lreport n-values people [0.5]
( q% l( w4 S$ b+ [7 N3 send
; V, i* S7 D8 E' ~- ]
2 q3 K8 R/ w/ N, {' v# nto setup-plots
& q  F5 N2 X. v0 q" U' t# {% }6 H6 {# H
set xmax 30

# b( H  I- C; r- s, _3 S  |* w# b' |
4 U1 M4 r0 j+ M1 h+ Hset ymax 1.0

6 [3 O& t8 ~+ G- P+ a" M
* b- y6 w- k, ?" E" u, }$ Kclear-all-plots
& ]( `7 X3 k. s
$ }! B% ?' ?2 P! p
setup-plot1

6 u. }) C! k: _0 f8 c$ W* _% a# K; j' Q
setup-plot2
' z* D- V6 o* i2 l. F
$ o, l9 y4 |6 C/ K' A
setup-plot3

0 c8 g) b* F# ~% M; Y% G0 xend
  w9 V4 z6 f3 M
: I5 w! _3 P: N. O$ B0 T* Y; t;;run time procedures9 S" M, h8 i' f) J* Y

5 q- u' ?7 B, E+ @$ E9 [9 nto go: t) M: F9 T$ w$ Q* z/ x1 Z
- z* x; f% D7 C8 d  x
ask turtles [do-business]
& \+ |+ q& `* |( n; s% a
end
; `# t  B7 E, s$ l3 `1 |# C, g7 j, g: ^) E! W6 N
to do-business
, @9 Y) _5 A: X2 m- {
& C% @2 W. L# |$ \2 \% }+ E5 ~
' _. B9 {  _1 i- ?7 c1 |; P2 s8 I" P
rt random 360
2 I1 C( Z9 ?2 F: S4 w' _6 Y

/ p+ j7 [% L, L& b) d- wfd 1
2 h$ S6 v7 G) n

- o/ I, x$ d3 G0 Q) k% ^ifelse(other turtles-here != nobody)[
7 i, G2 Y; Z( I# E

* o& t7 p: C2 s  ?+ M; ~6 nset customer one-of other turtles-here

% }3 F5 }4 ^+ U& G  ], R" b& X0 K, i
;; set [customer] of customer myself

) B) T1 R, P# L% ]" d" J
( ~0 ]* E, g$ z$ D1 c; {7 c1 gset [trade-record-one] of self item (([who] of customer) - 1)* ~' I+ V' r  D9 M! D* Y5 [
[trade-record-all]of self
" M0 ?0 `1 l, S. d;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( U) h* I; y9 i) O. }

2 e% ~; F, G9 [: J2 }set [trade-record-one] of customer item (([who] of self) - 1)$ \9 W( n9 s- p5 p
[trade-record-all]of customer

' C/ E3 A4 ?& h( A4 D. t* [3 n8 n4 M
set [trade-record-one-len] of self length [trade-record-one] of self
* c0 n  Q  v! F$ B

3 a5 ~6 |9 w, X0 k3 @set trade-record-current( list (timer) (random money-upper-limit))
; A  a( O5 W& J" x; J6 K
/ W* ?. g3 v) k' y4 [
ask self [do-trust]
4 f3 r6 G! C% Q& [;;
先求ij的信任度6 u/ \/ z0 f& p; _( \0 A* h

2 [  Z# r( \! P: x# q8 Iif ([trust-ok] of self)) |. X$ h7 ^! J/ L, `: K( q4 g" O
;;
根据ij的信任度来决定是否与j进行交易[! j( i3 Y$ }; G2 j1 H
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 M1 ?/ r9 \1 @2 @$ ?6 z$ q! M) `8 g, C3 ~
[

, K! a( }7 L& H, H; G) U0 }7 e
, |, \. [' O. d# q! m( F. ddo-trade
4 {# P9 R+ U- ]
" ]9 t7 c) b! m7 h! R
update-credibility-ijl

1 f; N; H( d% W. p* c
, G2 ^0 A4 Z! V8 fupdate-credibility-list
# K" i, e' U/ P/ n( u7 S

! f& i* Z0 u" d! r1 |. O; n$ p" ]' X: b& g+ F8 g
update-global-reputation-list
: P: ?: s8 l: Y0 z3 Z

- y8 v* v; f/ b% `poll-class

. e# k* B, ?* Z1 R% o3 {
" s$ t- k- x' `4 Z3 tget-color

4 [' R, @( U$ n) u
* b' Q5 c' g4 U' `]]
7 ^+ ]7 l0 g+ V& `! |# g3 y) G) Y/ ?2 T9 y) b# }
;;
如果所得的信任度满足条件,则进行交易& d% Q6 M& c& m' U4 l

  Y* L4 G0 @0 t- }[
! t- J# o! b( O# t8 I; k
) w* d3 `3 b$ b/ O
rt random 360

. z- u2 ^  V* Z3 T
0 a+ B  p0 U' D+ Bfd 1

( f1 h/ c4 |) s
0 D* r! I1 x4 g% g7 B]
9 e# i, D8 C$ X5 l* e
. ^7 R- m5 e& Z/ B. h% Q
end
2 i; h2 {, W9 w6 u+ X1 `

. J6 `+ x' y+ X5 qto do-trust
! d$ _+ c: i4 K, e3 y* o8 l* Uset trust-ok False' C/ w/ N, U  W2 y2 B# R
- ]4 t% H( n2 `# _  U
8 }! ^1 f  G; P' X3 U
let max-trade-times 0
5 N% k$ j- d2 Bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% }0 \5 I! }" x5 ?: wlet max-trade-money 0
0 j. A0 Y6 ~! ^7 E; E: D% }foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 Y: R; ^! A; Vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ e6 `5 K! |% i! e  `+ w# t* V- Z/ v. O% Q1 g) w8 B1 E5 i/ ]

1 u( J$ f5 I9 P" K, d" U& C6 nget-global-proportion
; u- B5 [8 v! O+ v# V3 ilet trust-value7 E* O+ p. d& n( k
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)

3 O! \( M7 r0 J  s& g2 zif(trust-value > trade-trust-value)
! t4 v/ N7 P: n$ f: V: _6 V; S[set trust-ok true]! O$ n/ y7 h6 m5 K+ G
end. L8 t- M" V: ?: |9 C
" U# \8 r! i6 R  N" L0 ?: K
to get-global-proportion
! K7 i, Z3 P0 w& c# |  c0 tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 K/ O0 f9 c4 B5 ^2 I9 }
[set global-proportion 0]1 y6 ]0 B, }: f
[let i 0
! s. R! T; _* A8 glet sum-money 0
" S" ]8 Z% t1 f6 y6 Rwhile[ i < people]
8 T: c# g2 j) I[, V7 @. g+ l, f5 T/ g
if( length (item i
2 P" I# M2 P7 N2 \4 e( w9 D[trade-record-all] of customer) > 3 )
5 O) a. ^9 v2 v$ g% a; I" c
[0 {1 C1 x0 D1 ~* l7 _# Z( I
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# m  L4 c; U8 a* P9 M. _7 s]4 p4 z  V5 O6 E+ p: f0 {
]& `$ e, H7 z" ^2 K( M1 q
let j 0
7 B/ {3 R  G; Z9 [let note 00 i8 @& O8 @  x- y, \5 c/ m8 E9 m
while[ j < people]  H! [2 a1 X$ m5 L$ I0 O
[! q) O, l) a/ s. B9 r  s- p1 ~1 F
if( length (item i3 H4 D8 T! ?9 S2 ~* d  _9 V! Q
[trade-record-all] of customer) > 3 )
4 w5 S) _" m" C$ Z! n8 D7 ~& I
[  o( J1 }7 P+ T) {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& f- L* V" _0 y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. @/ o( O  e. K) Z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. b$ _! a! v3 ~3 E, L! k]& O3 R8 s( k% r
]
+ I& ?- ~4 N# P) K1 T4 g- i- k; Cset global-proportion note/ Q+ r  y2 ]6 C* V3 O9 N
]6 t, k7 N# R  }$ C! A" }
end
+ \% T' R+ F: u: Y5 }$ U1 W7 H; E/ ]- O% D# p' j* B; q
to do-trade
( Q9 z# _  c/ F;;
这个过程实际上是给双方作出评价的过程
& f: C# v% \( J0 g) Y  jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) C2 _) w. m2 J" ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. I: D2 Y8 q4 D+ Aset trade-record-current lput(timer) trade-record-current% p: W% j8 I7 v7 \& j
;;
评价时间" w: D! k8 e: G
ask myself [; V9 w% }3 j# j1 |
update-local-reputation
" e6 _7 z2 ]* g0 Dset trade-record-current lput([local-reputation] of myself) trade-record-current; B2 _6 Y. u, c4 C1 {
]
# e9 e0 @* o! L: mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" Y: W/ g2 m: b; l; o0 I5 e6 I" o* f, u4 L;;
将此次交易的记录加入到trade-record-one
6 O8 c# A# y) N0 V9 s: C- ~9 a  Qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 U+ a/ L& ^& i9 a( }0 \* v
let note (item 2 trade-record-current )1 D4 g, x" k6 Z7 f( d
set trade-record-current
# G8 m" j* l) r( {8 O" a3 f(replace-item 2 trade-record-current (item 3 trade-record-current))
! Z. @+ `. g% m$ h" c4 g
set trade-record-current
$ D$ v& \2 v6 N# @' P  ~(replace-item 3 trade-record-current note)( j! h3 h) F  ?' e$ O

( E% v2 }: z' t7 H

6 B0 E8 m9 g  {7 N/ P9 wask customer [, s, C7 J; |' q2 Z- I7 F
update-local-reputation9 Q+ k& f) Q  `+ _- `
set trade-record-current
* A# X% n! ]" g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 g" e- A# m2 q6 V$ p# R, _* b
]
1 o; ^6 ?& n0 B4 j) Q5 C& E2 @, D1 m
4 ?5 }. O* g' J; f
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& `  K0 h! m4 H4 d

& m+ M. K1 ?4 V" R  rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 X6 i. ~* J  y& t' d, [8 @) @; d
;;
将此次交易的记录加入到customertrade-record-all
. O, q+ @5 ^9 Y+ Z5 F! vend
: l, Q. }- z) ~+ x, y
: a5 d& x/ {" _to update-local-reputation
# o' ?, P( z+ a9 i' fset [trade-record-one-len] of myself length [trade-record-one] of myself
$ J6 s0 B. n) R; ^9 m* e) ?
( d( C! D9 I( F. y
( s; E; P+ L( e$ R. P$ O! l;;if [trade-record-one-len] of myself > 3
0 F& E( O& Z3 T2 M% B! N
update-neighbor-total
+ \( Y. U: Z( k% `;;
更新邻居节点的数目,在此进行
2 q- N/ {6 j- Wlet i 36 m4 `' d4 E& H" m9 \# F
let sum-time 0: D% c) _4 L# a2 q
while[i < [trade-record-one-len] of myself]8 c5 }" h7 e# R& q) n* a
[
) a/ D. Z  ?' z1 Xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) m5 \" k! f: nset i6 s1 ~! l, f& X, C( x8 l
( i + 1)
8 A2 x3 Y+ J. Z5 T$ X* f0 C
]+ F* H4 l4 N. b# j; t, n; ]& A, [
let j 3, k( z  x3 @3 I
let sum-money 0
0 c/ B1 d3 i( u* V6 c; o4 y! ewhile[j < [trade-record-one-len] of myself]
/ u0 U$ k5 \( N8 M/ h, Q[
; L9 W3 C1 u4 Y! H0 B1 Bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
/ ?4 S# Y: r  i8 ^4 M9 g; C. y3 q5 qset j
, c  K+ j- M' X. U: d) V( j + 1)
- R; f+ Q: s7 ^: U7 n, j& H3 `
]
1 X3 Z- k* C. f4 Clet k 3
  {; L( I# u% J- u6 n( ]# vlet power 0
/ A( Q' n- a* dlet local 05 Y- o6 O- p# h: U- n5 }  e
while [k <[trade-record-one-len] of myself]
" a& D# i% y' }$ ^& b[! L% c' `1 G, H; 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)
4 T8 Y! _8 J. g( m8 yset k (k + 1)
+ w/ ^$ k. B  E1 `% l]
( E3 R3 l! U7 e) R+ V3 r0 Hset [local-reputation] of myself (local)+ a( ^1 g- A2 _5 o' I6 c
end
7 A+ x' R1 ]/ ?# O5 g. ^. I
3 Z3 G0 t7 M' r) Z+ M" Yto update-neighbor-total: q! e, D' }/ o
) a  l# R" H2 x5 o, ~
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' M: v& I2 i- C: E6 x  q0 o! w" R1 V. O# c( L) A
/ H; _1 p- u* S9 {9 S  P, ]
end
9 B1 s: @, H+ c) B8 ^- d* M$ o+ F7 C
to update-credibility-ijl 5 y4 f& ?" |4 R* a* ]; O

& Y  m* w8 z7 S/ D' Z3 Z;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
2 W# I# k3 ]2 y; |% `2 ]let l 0  \* ]3 ~# Y0 Z( \: B6 ^2 j* T4 F% b
while[ l < people ]
6 J) w6 ^6 U! e% F, 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8 @2 e& a1 q" P3 p" A
[
' A4 _$ A# L" p. }let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( c7 g; j) L( S" G; ^) q) R- G1 Uif (trade-record-one-j-l-len > 3)! F) L* J, f1 H# t
[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$ _% n8 R: @6 S( H
let i 3
( V# p' S$ S% y2 U& Y# d0 Ilet sum-time 0) V! a/ ?9 ^$ X% k, ]* n
while[i < trade-record-one-len]1 s0 r6 d; Y; `9 ]* E
[
, ]1 {) J' i$ rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 P* `0 P* g+ a. n$ o: Iset i/ x) }* K# A4 X
( i + 1)

; H. E8 @+ Q! @: d]3 J$ n9 N  |5 N' y, j
let credibility-i-j-l 0! C- o5 o+ ?! r0 E: A% p
;;i
评价(jjl的评价)
; i( [+ ]1 ?: |- Plet j 3
, D0 ~7 Z- p! \  M  U0 j! n( Wlet k 4
7 u- E6 C: g* K: Z/ D) c* \6 P+ Swhile[j < trade-record-one-len]7 g; W4 j6 u1 J, i
[
1 F/ q6 P7 f% [+ T1 t- S# Hwhile [((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4 O* \+ D7 X: w0 Y  \
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)
  n- G8 i( q+ Yset j
, a  a) @: L) T" T# z# v; i/ D( j + 1)
: @' M* W+ A& X" k' {+ T, H
]5 B/ V9 b( ?$ T( G; }
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 ))$ r# h, G1 O) J3 R$ F4 r

. I# p3 W, T) L

# X1 J) r% ]: m; b1 elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* i+ p. s& Z2 p# ^1 ~;;
及时更新il的评价质量的评价  |" E+ A7 {# g$ e6 J$ b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& a( |9 l) A& @- u" V
set l (l + 1)
8 d9 s0 d; F: `! c  E]; C6 x* }) ]2 C0 R0 w% K
end
' }( t" @1 r4 d" n+ t" U6 B0 l, [7 ]7 _$ N+ a. m$ V8 A
to update-credibility-list
# `- @9 F7 j* v# G, M9 r. P& S" a4 a9 Jlet i 0
) S% t1 g" s# Lwhile[i < people]/ s, w* x8 n# o1 `3 H! E6 K
[+ w( s# l! }8 Y8 c7 j
let j 0
/ g! b4 y; @! I& _# C, klet note 0$ J6 Y; I: [; k  O: `; z
let k 0* Q0 b( ~3 o% O) {$ y$ B8 l# ^
;;
计作出过评价的邻居节点的数目
) F5 ]5 ], T: J4 m5 q+ g. ]( g0 awhile[j < people]
' w6 q; f( [, W0 x% K[
' _% N# R3 W9 Z5 Jif (item j( [credibility] of turtle (i + 1)) != -1)
  @# S, M0 S2 F1 E- };;
判断是否给本turtle的评价质量做出过评价的节点  d" Z, U* C: k- a$ y% {
[set note (note + item j ([credibility]of turtle (i + 1)))4 c2 w/ T* V! |# H' d# j" t3 J: W
;;*(exp (-(people - 2)))/(people - 2))]

$ l1 V9 F# o6 h- D# Aset k (k + 1)
' q" G! c7 R4 {' a2 ^' {' ^]
- Z) b& p& _% P. d+ T, }! Uset j (j + 1)* z2 W0 b5 c4 Y) l8 w$ g
]& z" C' Z# F4 s- j+ y
set note (note *(exp (- (1 / k)))/ k)$ r* V; W5 n% i& W( B: j
set credibility-list (replace-item i credibility-list note)- p! P9 r5 i& p8 W1 B8 L0 P1 C
set i (i + 1)5 L. q* c2 ]" d8 c6 q0 s1 ~) C' }
]
! g$ D* G( ~) i! u+ S4 I# Q9 zend' [3 Y! W, m" \7 T+ Z

, }5 T! \* G& n: ~# Lto update-global-reputation-list
  z$ y- s) ]5 K% i! Dlet j 0
9 i; R7 U$ k" b, E8 O! Vwhile[j < people]. ^( }0 R& W0 K; L
[
/ K4 _# M' F, L4 o$ W% P6 Tlet new 0
0 j% Q( o* x4 I8 z1 a( y3 h;;
暂存新的一个全局声誉  V4 p5 r+ k! e! F' T
let i 0( ^/ f- e/ R1 e2 A3 [2 b$ m
let sum-money 0
# _  S+ R' g4 p, Nlet credibility-money 07 d1 x( W' P/ e; o9 q8 R
while [i < people]
6 p8 J/ m  [" u+ o[
5 \8 C  @# T, `8 |3 K5 `set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  M5 ^) ]3 Y6 j( ~
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' {' ]% y+ n  b1 H, K$ D% Jset i (i + 1)
3 ~+ r3 S% I2 s) l7 M% i/ ?% H]
8 ]" G# o: o7 j# K6 A6 F' clet k 0
- [/ s/ |% K' \$ s4 j: J) \: tlet new1 0
$ K! Y" F) x* H& cwhile [k < people]
& T2 |7 ]1 B  @[- l" S5 p$ n- C2 a8 i
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)
' E: {3 t  j$ W: p# V8 Q( C  u7 F9 fset k (k + 1)
. F' s( j7 C& ?6 e]
% T- k% e! K1 R* T" |set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : D' c4 Q4 L" e$ y4 b2 a% W# I
set global-reputation-list (replace-item j global-reputation-list new)
0 D7 a, J( f+ G) B% O" ]8 sset j (j + 1)
# Y5 c  ~1 P+ d: n* Y]
: z$ R) Q9 r5 m8 G/ }$ K( q4 l1 w# jend
% r' W9 D1 x/ F6 P+ K8 X# i! W2 u: z/ H# B  J

" r# F) P4 Q5 i! J- F& z0 X) }, A* ~$ _; C
to get-color
' E6 J2 B4 O. g+ v, X9 r& r- X5 e
set color blue

. K% G& G9 ]9 ?, mend: N3 ?0 b3 A6 H
3 z" u4 ^1 ^, R, N2 x& c, V5 p  N
to poll-class# x8 D+ ^# r0 q% f
end. o* M( i7 Z4 Q3 i9 n  c
4 b1 ?  m) I, L. Q& p8 [4 x) Q/ z
to setup-plot1
  R5 t7 T- R8 ?! r" x: ^$ D7 X$ r7 l. @1 B: `
set-current-plot "Trends-of-Local-reputation"

0 }$ ~1 c' e5 e/ |4 N1 q! w- k- Y& A! |  i+ O
set-plot-x-range 0 xmax

3 {# A* m7 H* u$ W6 s3 A( L  W+ M( ?& c( V/ A8 z
set-plot-y-range 0.0 ymax
( x4 K/ J, E' h/ S1 K0 }( W
end/ N3 J7 S, W- X  J, J8 m
# h8 f' Q. Z. S
to setup-plot2
- K( z' e/ V* s  L. k; [( m6 K2 f7 B8 h
set-current-plot "Trends-of-global-reputation"

* ~! @5 I. }  L$ X* K( Q8 S! Q: I* c2 _; A# W; k8 `
set-plot-x-range 0 xmax

! O1 ^  _# v: E& r1 P# A
0 Y" O! m' v& Tset-plot-y-range 0.0 ymax

2 ~# u+ N" \3 ~7 B  `: w  Wend
* _4 p7 y1 A, U8 a' h# q' @  m2 q) _: J1 X# q# s/ r
to setup-plot3
' }( G6 b5 }# R' T, c
; x/ r. U; g  G, j& l  t; Yset-current-plot "Trends-of-credibility"

& m4 c. s: j, ?! R( ^
+ m: V8 x& S! x, L, n7 @6 Q2 vset-plot-x-range 0 xmax

. i5 A" a+ B* y+ z* {; x3 @: m7 B- i2 p+ T- f/ e
set-plot-y-range 0.0 ymax

8 H, P& x' [2 I( D' A! lend
' z& b$ a. @0 g6 I' c& S" K! i$ N( Q4 K9 [" E
to do-plots
$ b1 A2 q: ]1 a+ i" n2 w: u* cset-current-plot "Trends-of-Local-reputation"( e# T4 c. U: R; c5 a  L: E
set-current-plot-pen "Honest service"1 s/ f  Q! C+ @0 @3 Q- J$ A. d* I
end  j  R4 c% q0 J% }+ j  p
' v5 f/ a: |( K1 `
[ 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.
0 `3 O0 b& H- ]* A( s- T. h
) C8 ^3 a3 l* |# e, Z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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