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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:
2 R3 T, P: v% Dto do-business ) f: J' B7 ?- N2 B9 p5 D) O5 c) E
rt random 360* C, W8 j3 C1 o& J) _# q4 t$ ]
fd 15 y9 u1 q0 x) o/ j2 V! X
ifelse(other turtles-here != nobody)[
+ O3 t. Y2 ~4 R2 B- T   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.
/ C% Y& D" u' o" B5 C0 s   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ _. C) j9 b6 L0 [# C/ H) e   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! v  Q/ M. h  E& k) Q! H# k   set [trade-record-one-len] of self length [trade-record-one] of self: Q' x- d0 W) I3 f
   set trade-record-current( list (timer) (random money-upper-limit))# E+ f+ o6 I9 `5 ]
+ r6 n, x, F% L
问题的提示如下:
! F6 Z8 o8 V3 {0 y$ N6 c' t0 r: A0 u; s3 U0 s4 G! R
error while turtle 50 running OF in procedure DO-BUSINESS2 b" @- r) i. d# J
  called by procedure GO7 _2 \( n3 v7 V
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; G+ P, T# R/ k5 K8 W6 b
(halted running of go), S8 ~# Q% D/ O9 `1 [
6 y3 F. J' M) T; g% k
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~~
4 ]8 a" n+ ?. k5 m+ F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
. M' m3 ]1 R. }' l/ Y9 [globals[! [: h1 e' r, l. o! y8 J
xmax) z, C. q) \& b" l8 ?# p9 [
ymax
) t" h  V; {% r& _+ uglobal-reputation-list
' W2 }9 _5 ]; ^# H3 ?+ Z
  J9 H9 |) L# r9 O/ F;;
每一个turtle的全局声誉都存在此LIST
1 r. h5 T6 v0 z7 z8 ~credibility-list
- p) Y! Z. K1 P0 I;;
每一个turtle的评价可信度7 d8 V- Z; i% E" \# R7 F
honest-service* J* j5 R" z8 \% b- n6 j0 b
unhonest-service5 G8 y# v0 W8 {: I
oscillation
( ~' ], z' u. Q4 K( U" x- orand-dynamic( b7 V9 O+ U- m0 {
]6 ^9 _! U' R+ {+ J: R. U
+ e! V- M, |" w% L8 I+ M% \
turtles-own[
$ _* O# h& |! M6 u; J% jtrade-record-all
4 ~7 }: D' `: A; g5 Q7 n2 j# };;a list of lists,
trade-record-one组成
9 t0 n3 D% j# \; h% R8 {2 w+ @trade-record-one
* I2 ?  x0 H0 b6 `2 e/ [# T$ B;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 n  K6 O$ x' R! K! Y0 V  u$ K/ C% F0 @9 c3 Y
;;[
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]]0 H7 H6 g* D# B
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]; K2 Q6 R9 v3 Z* v( F' Q
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
) w( s' e) ^6 ]. X" cneighbor-total/ x6 _, m7 Z# K; S8 W3 q# D
;;
记录该turtle的邻居节点的数目* P8 C6 E; m5 T+ g5 K# ^3 ]! d5 J
trade-time
2 x5 `9 D0 O# y;;
当前发生交易的turtle的交易时间
; u$ |$ n. t* [- v6 Tappraise-give- a$ L, E% g3 B3 ~% C! y  C& h! g
;;
当前发生交易时给出的评价
. Z% k7 z, x# c/ o, o5 lappraise-receive
2 c2 l+ V1 m! F( i# T9 @- O9 |; P;;
当前发生交易时收到的评价
/ O+ g9 I2 b- Z$ ]% F8 ~appraise-time) `* v7 ^& X# u" N' B, \/ J5 M
;;
当前发生交易时的评价时间
- _& J; G) ^% u2 blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 e* q' ?6 ~4 xtrade-times-total3 O  {2 r' k8 z4 b) B
;;
与当前turtle的交易总次数, m. N# E& {- M- R
trade-money-total: V. t; D: K! [+ Z
;;
与当前turtle的交易总金额
- r. G. w$ E( ~; R0 I( a! Ylocal-reputation  F& M4 J' W6 v. A+ }  U) L
global-reputation
1 W! S+ I# g( y4 |, w" Q- ycredibility; D6 ~$ ~2 O" v
;;
评价可信度,每次交易后都需要更新6 b3 v' N, y# h) u  N/ k1 q
credibility-all
+ [* J. e- p7 ?2 R, @;;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: o0 }4 _0 U% M; M
; k, b8 }8 I6 G0 Z9 g
;;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
6 b0 d; A4 [, t# l  G- n1 R$ acredibility-one  H- {) G5 K1 b$ d# z$ _
;;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
& D7 r1 x' \6 a- p- F# s) Gglobal-proportion
9 I6 |5 ~. U0 o) }+ \customer
% c2 K! Q5 R7 x: `! h2 s8 Fcustomer-no
1 }& S$ M, O- @8 J$ Otrust-ok
  K7 U# p* `8 k9 }0 q! htrade-record-one-len;;trade-record-one的长度! [" \& a/ p3 A0 K# w( l
]
, K! A1 i7 ^8 h' J2 a
: g& T  y1 q3 u5 X* G: w- T( }/ A! k;;setup procedure2 G. I5 B" w+ n) a8 K2 Q! C

# x8 W* R0 N* c( p- A: g6 k* g+ m3 nto setup- \. b; E. U8 a4 `

7 _& W- S( j5 q( T4 Oca

  ~. ^7 q8 ?5 W% P' E* a* J3 g  J8 |' u$ {  _/ J: k( I4 R2 a
initialize-settings
" m* s6 \+ w3 Z  C; ]* t
3 B$ @# d2 M3 c+ e' @) T
crt people [setup-turtles]

0 Q+ }5 G5 Z  t) {
7 s, p8 X" ]3 c% t8 Qreset-timer
* l) P7 J+ u7 x6 g% b

2 v5 {! q) c, B7 ^7 mpoll-class

/ C) z9 k3 ^) u6 J  Y  X3 O2 U2 ]/ N
setup-plots

4 S/ L4 H# s/ N! l5 z( `6 U
) o% _2 l, y+ L( s. Y5 z' udo-plots
* {0 l+ |+ s9 o/ T+ l7 I
end, ^9 `) m6 Z3 I& }& `7 O! ?
1 P$ x5 k% {! t
to initialize-settings, x& @$ E, S' h( ]' e  b$ O- x
5 J' f# W# Q9 f% r! Q
set global-reputation-list []

8 T# W, d7 X' y. ~! X) M% F. u0 |7 m3 H, p: F
set credibility-list n-values people [0.5]

: A' X% v1 _+ @$ v( `
( L$ e& d$ `6 I9 [% zset honest-service 0
: h8 W# [- O8 J$ u( S
, ^' H+ I" f5 r- f$ S& o
set unhonest-service 0
$ G: R7 \- a! m3 q" L( l# [  p6 P
7 e- u) G8 n$ ]; _* r- T. s
set oscillation 0

& o% ~- E. q- H9 P9 m' L+ ]- `$ z2 c/ G
set rand-dynamic 0
* }2 V. A( Y5 q. b3 [. B1 r8 `5 }
end
1 O/ E$ j( ^! C. M. j
: u/ P$ {1 i( B$ o, S4 Q9 d. Ato setup-turtles
5 N6 j% t& H! G7 y0 e3 J  Eset shape "person"# Y7 ^. a- [# R0 E& h
setxy random-xcor random-ycor9 {2 T; K8 s9 {2 H5 M% C
set trade-record-one []
5 \/ n0 F, O7 Q# d! Y2 H. I

- G: s! D& N; E* {8 N; l6 R  Aset trade-record-all n-values people [(list (? + 1) 0 0)] : g, M5 Z* X/ P+ S0 b! r2 c) C4 Y1 W
8 H  [$ W7 m6 x+ Y* V0 s& A
set trade-record-current []1 }& F% R, V% G9 U
set credibility-receive []
0 h$ C/ K: L, Lset local-reputation 0.5
: ^2 e$ ^5 A$ c  J3 ^% ~7 h' zset neighbor-total 0
  w# ^" X8 }1 a8 C- ?set trade-times-total 0
. @( w2 ?  z, Q  }, l& C' t# {set trade-money-total 0
) |8 F8 {" b. z/ \* tset customer nobody) A- B8 Z2 J+ U* {7 }
set credibility-all n-values people [creat-credibility]/ h4 m6 D) t1 E* N& ~
set credibility n-values people [-1]
5 D) ]( }- q. y6 Oget-color5 C3 _6 H. q+ p
2 K* N$ L+ L( c2 g6 h7 r4 t, u
end
, m' B8 Q7 D( s: Y, W6 l. {  I0 x
to-report creat-credibility- a1 d+ n4 c! K" z: \! n
report n-values people [0.5]& k7 u+ @! W9 i" {7 T# \3 s
end
( ^0 S, x8 d* u% ?! i% R, M: {6 p! b4 k. X5 Q2 @& ]
to setup-plots& C2 t( h. `: Q! X$ f9 d# z
) c) z6 f' r# p# Z" y% G
set xmax 30
( K  y8 }* K- O6 w
9 f5 U; {+ I# v: Y
set ymax 1.0

8 m5 J8 `! ]2 X" C, z5 N1 b1 h: X
clear-all-plots

& W- I) ~/ ~1 a( R5 P+ h* i* X5 P$ f" F' ?: h9 `
setup-plot1
2 {# P, h$ Z7 d1 B. A9 n" ?, W+ z

: Z- g" ?2 U% `1 H3 D9 q3 wsetup-plot2
) `! L1 r0 J4 @; f; ?. O

6 u( M2 c* ?: t3 V+ D4 qsetup-plot3

0 v0 t+ ^& n/ B2 P& A8 f+ C% dend
  _2 d; `! T1 R: V
, i- v. X/ S1 H9 A) A;;run time procedures
) X) B& u: }. O- f- C, O! L4 M% R$ U+ X' u4 h
to go
/ x) k. G, I$ \( L
* B9 @3 J1 i* D: w) @ask turtles [do-business]

. r) o$ T( k3 p' |! w  [end
( R5 f. U4 Z5 }) y  D4 p
/ I# @* G8 t4 i" x9 ^3 D* cto do-business
8 O; |/ R: ]* M

9 |0 z; o# K7 G* b* b
4 K- m- @$ t( M- Drt random 360
0 }. d* @" ]6 S+ K7 X! }
5 q8 e, h6 ~$ c+ o
fd 1
4 g$ }: [1 g2 x: D
) j; {4 S( `0 V) e  h
ifelse(other turtles-here != nobody)[

; Z! H" a/ ?) s2 i$ ^
& s6 O" s- T' s  j" l7 ^set customer one-of other turtles-here

  F0 Z: }% n* P' M; Z# j9 K: ?1 _
;; set [customer] of customer myself

. q: w: O1 c9 R
% ~6 c. a: g+ K# I( c; ?+ F9 ?set [trade-record-one] of self item (([who] of customer) - 1)
( S8 d7 p- ]# A4 j/ B$ |5 u[trade-record-all]of self, z! s& p& ?) R$ I9 R& H- ]2 R
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& [5 G9 D8 U5 I" |

8 f6 p, i) G6 Z) W: j& J  x2 w! |, tset [trade-record-one] of customer item (([who] of self) - 1), _6 @# ]7 o8 e4 M. V* z' x- g
[trade-record-all]of customer
( e0 l: A7 ^7 @5 ?

0 e( i8 j1 |! f6 ^% f( ~set [trade-record-one-len] of self length [trade-record-one] of self

- l, x( r# o' G  y1 P+ P; s! z% }
" Y% H, O# ~& C! [. u- z; ]set trade-record-current( list (timer) (random money-upper-limit))

/ r: \; |$ a$ b$ t9 b9 Q: q7 g2 K. a
ask self [do-trust]
7 c+ W3 @4 x5 K1 N9 f;;
先求ij的信任度
3 z. _4 Q6 o; S
- W9 ]9 g" R4 C  a/ {$ cif ([trust-ok] of self)2 m# u+ T. [; N& s# o. w
;;
根据ij的信任度来决定是否与j进行交易[
  n, _" E' r% B8 l9 B1 Sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 ^. i3 h8 S- O0 v$ S
, _+ [( }8 M7 `+ [1 Z
[
' P) W- l# ], T) ?

% l2 t! `! F: B+ Pdo-trade

3 d* S  i& U, A; J/ A3 f  P" V7 U3 ?# @; t: K3 t/ Q. J- B
update-credibility-ijl

# \# Q) W7 V" r4 X" ^/ E5 K  q7 v; R
update-credibility-list
6 K! Z7 A( S# _' R# }& [5 C1 p

/ Y$ T, ]5 N1 Q3 d, e  c$ a* q- `$ W' ?% l
update-global-reputation-list

/ G6 w. Q* \3 g, d' C: T' A4 k7 y# c* {5 b; o& m0 M1 w
poll-class
( `5 S6 G- N2 a6 i5 Z9 F

) B7 N2 z0 c( t  cget-color
2 H' V  _; N, K; I

$ S/ |! ]0 `2 z9 j: \]]
0 s' o( _  o8 {/ Y! q; ^1 b/ ]2 K
;;
如果所得的信任度满足条件,则进行交易7 p! o3 D! A7 ~; H6 x

. Q% y. X) m4 g% }9 r7 c. {& X$ V[
' |$ t! c8 O, r+ L5 @8 x$ A

3 x, Q* O$ p% M+ P6 Vrt random 360

5 m: r% o$ Y' j6 x2 g4 h
- Y* H# N& G/ W) q9 Q1 Z$ m1 N  Pfd 1
0 r* s! w& ]! T  \

4 b- C' M5 g* i; Z) [, U* E]

1 e, N  Y8 e5 s
- h# @. ^$ H9 p- {$ e: jend
$ h/ J+ J% [* \- i
( p7 d" f7 |3 R$ t7 k
to do-trust 1 N  P$ J  Z$ c7 X+ Y# Y/ p8 V
set trust-ok False! m3 s" v* C% D5 w% h' ]

. x* t  V# M+ Q

3 Z$ c1 `0 f% k9 v3 Ilet max-trade-times 0
! c* A* ?. f" W& x  K$ W5 Tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 y& G8 d0 O2 Alet max-trade-money 01 o) q. V; q) W  q! G6 M
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- y7 ^$ i9 w5 r% a  w7 xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  _9 C4 j! D) `0 T$ @) @& {/ v3 w- ^4 Y$ I

+ a7 e9 q1 V: [, L- [" w+ ^get-global-proportion; n7 v; n  p2 p- G& E8 K) Q
let trust-value! A- {5 X% Z/ _; T% X4 ]
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)
6 }2 C6 j3 Y* ?6 o8 z' c' h& j! M  J
if(trust-value > trade-trust-value)
+ i3 t0 u9 k! ]. a[set trust-ok true]! t& ~4 m, G! u+ y4 f- h  R+ }
end5 v/ a- E- \# E! ]& Z5 W( n& j3 B
% y7 v* W; j3 Y; `9 A
to get-global-proportion5 r: t! y7 r7 |& W1 s" q4 S: L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 ~  E8 _! L" u; R3 \! `" ?6 ][set global-proportion 0]
4 c6 ?. m+ p3 B7 {[let i 0
' f& ?1 k8 [8 u$ m" \- t/ z& Plet sum-money 0* I2 @3 t6 b% _3 w3 N. k) Y
while[ i < people]
" Y9 y9 R# [3 b- w$ i6 b' E& j[
* G! J1 X. ]8 lif( length (item i
8 a" v' X# M% T' Z" G[trade-record-all] of customer) > 3 )

+ t& J, Q; M8 j  a[! L. l, r* y2 k) l
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ ~0 K, F2 ]+ k; Z; W]
' n4 i  U/ U  n( A* y]
- m; ]# Y# y0 y* vlet j 0& X0 I2 u2 U" K
let note 0
2 v2 e! u; x% u/ J& \4 v4 j  U) H' mwhile[ j < people]
5 r- c: ^+ Z  d, l: t6 Z[- K' w  P. E5 g0 O% x
if( length (item i/ \( |4 Z3 N* P# H3 q0 Y
[trade-record-all] of customer) > 3 )
9 @& t. o) \7 h, J% i% y
[
5 L7 N& b: M5 S  tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 k$ O. b& g+ q  N5 V" a[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 n7 ]3 e, J7 L# N5 s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- H$ _1 X. a" q9 z]+ N9 ~/ l5 U5 }8 O5 O, \( l
]$ Z. t6 k& i" V* b: v7 X
set global-proportion note
% s+ T* }' }4 X2 x, v+ S]" X* l$ M% \* v. L* n
end
$ V  y% F7 w* [& R  g. `7 C
* t5 i8 T* s: g) `" M( F% v: [to do-trade
0 C7 _5 E5 F1 F* _! p$ I;;
这个过程实际上是给双方作出评价的过程" g$ h9 P: {9 T5 c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) b/ d9 j: Z4 j/ {- p: b' s0 P( dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, r& e( G$ B3 K3 N
set trade-record-current lput(timer) trade-record-current
0 @" `/ d) Z, d$ }  U5 z. X( x: H;;
评价时间
3 D1 c4 ?2 m8 i2 ~- u" D  ^ask myself [
6 _7 ]& O' B  a2 M& X% Cupdate-local-reputation
5 ^4 `! u% {! y- r# [9 Yset trade-record-current lput([local-reputation] of myself) trade-record-current4 X& q: I) p; K7 c; E+ {: Z
]7 c" H) C2 d, `0 ^8 y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ w& a/ M/ u/ g7 ~- {  u3 N3 W1 d;;
将此次交易的记录加入到trade-record-one7 D& o7 \) @) f+ h6 b0 h! C) y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* n, f& k' _2 }1 p5 Z1 \" J/ E
let note (item 2 trade-record-current )
+ N- }7 O6 j9 ~9 k8 ~% v% xset trade-record-current( ~# a! F$ a6 R
(replace-item 2 trade-record-current (item 3 trade-record-current))

* k! {3 B4 N/ h1 q& ~$ n2 Rset trade-record-current
: r; s) B1 d% N/ f; a(replace-item 3 trade-record-current note)
% ?; P6 S0 W& ^- w) F
+ w: c6 x% |% U
3 {) P% c8 J. P( }' P
ask customer [+ y1 U2 i6 D% X" Q; d& Y6 d
update-local-reputation
0 x( y4 p" C6 c9 B3 s  W, K- Bset trade-record-current  ?0 X* i" j( G+ j/ J* r
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" J6 X! S! @3 o
]- |+ N- t4 ?( }8 x1 x
* j' _5 M& b/ a% _0 b( Y6 B

+ N2 h4 _# n* E0 L8 @set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 H7 F8 A* v; Q/ F
7 g7 O' ]5 V" ?) ^+ z& I" {: g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  a1 K& H# K8 w- V+ o
;;
将此次交易的记录加入到customertrade-record-all! S* }1 B- e* }' v2 J2 @
end
( P, l. _8 T/ C
+ M" J3 Y/ e* ~to update-local-reputation
$ ~+ H% f# h0 @7 G% x. y$ H- l5 Zset [trade-record-one-len] of myself length [trade-record-one] of myself
$ Y) O" J! E& M0 X) k4 @
4 E4 r7 s. g- F& k# X0 V2 c3 H+ Q& X
;;if [trade-record-one-len] of myself > 3

" b% `" t% u+ R9 k) Wupdate-neighbor-total6 K) ^* u9 k4 T- a, L; S. D
;;
更新邻居节点的数目,在此进行' O. [8 M/ v, W2 I
let i 3) m2 B( w$ r2 h% u0 p1 H" d
let sum-time 02 ^8 M: N, n6 E& l, [
while[i < [trade-record-one-len] of myself]# w  |' ~* A. G
[
4 Q+ q# J& _, `0 j6 [$ Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 Q: n* }$ v# w) O. Z# C  Y0 |+ F
set i
* t' ]1 n% M+ D+ p( ~8 b) [( i + 1)
: g. s7 C7 m* E5 y( ^
]
/ a2 [4 o. _8 W( e% ^let j 3( G/ y2 w( ?; T2 V( W
let sum-money 0! Q7 r+ Y& N  }: P5 O: y
while[j < [trade-record-one-len] of myself]
3 \9 j0 G# I, c& H5 k  _" S) y[
8 e5 z4 {+ j( I! R; o, A9 f3 a7 `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)3 g  M$ V" \8 C$ A; k- f
set j; Q0 B; F2 b  R  B& w! f
( j + 1)
/ A5 {) @/ ?/ W( i0 l8 e6 p
]
4 _  w, i$ K6 N2 t; M0 y) clet k 3
, G  M; |- |4 e; b# M; ^$ plet power 0' m6 D0 r7 u) E/ Z
let local 0
/ x6 I2 p4 V+ _2 C6 _while [k <[trade-record-one-len] of myself]
  E% {0 o9 ?, q) ]; @0 E/ s7 M[
6 G. B( Y$ F: tset 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)
/ b5 J0 X9 I. d3 P* [# ?4 Z, [set k (k + 1)  ?% S- h* J5 o$ x$ h2 t$ T
]' Z+ a( k1 D  E# O0 {6 ^% k+ [0 P
set [local-reputation] of myself (local)
; N+ ^; w$ S8 N' c6 Dend2 x* j9 [& X9 G# A& V, e

0 N1 t$ d. @" q' o( k0 }+ xto update-neighbor-total: I+ J7 o0 R, o* ]/ j

/ b7 _1 v' z3 a$ M' X) v! e6 k- Fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" Z; w  F0 P3 q! [5 v9 F8 ]* ^4 b8 B3 u. K. d' X
: z' Q+ l# _/ c# \- ^; ?, o
end
5 E; n4 S; Q# O# ]; |: X3 q  ]6 U) q% r9 g2 C' t0 O- @
to update-credibility-ijl 5 ?. c1 @; v( M" k$ c* m5 Q
6 m7 B! ^( f0 a* o
;;
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。
0 y! x2 Y! p  n* w" Slet l 0& I- A2 X" U9 d0 q( L7 d/ ?
while[ l < people ]
# V1 t+ G9 e: f  v;;
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
4 {. M8 \. b6 U+ B; |/ t[
, O8 D& M2 y% ^0 _$ Zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 \% `4 x$ _% Q, X& l6 q0 c6 B. ^if (trade-record-one-j-l-len > 3)
) }3 [/ G- U% H' d4 O7 t) r[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$ n& O+ b! V% b1 g. \7 w& z
let i 3
4 t4 x2 L1 h  C" Z5 Blet sum-time 0% N* s. w2 o, p& A% N3 h1 ?+ B
while[i < trade-record-one-len]
+ b3 d" s4 a; ]  e+ q[5 Q- ]4 z, B' j; y6 t
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, H' J' g% _" S. v- D4 qset i6 D; U, H/ H" T% v( ~- m
( i + 1)

- n+ y& Y- E) B2 h8 G]$ F6 v* b3 x  ]# Y, o7 E
let credibility-i-j-l 00 w/ T2 @- y$ S& x7 E+ F1 J, N' P
;;i
评价(jjl的评价). h# `0 l( l( y0 w
let j 37 B" X" q3 g6 u- ]
let k 42 y# j8 B* ]" G: F; C6 {. u
while[j < trade-record-one-len]+ z& S# I: E7 c
[6 m9 ?& Y) z; v: @' j; }  |) k
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
2 ?/ H( t+ d& o. d% M: n5 \" ]- Dset 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)$ Z& G0 |8 r4 q! S3 B2 ~
set j& S9 Z2 h0 S; a4 J4 }2 f+ i
( j + 1)

% x: I& I1 O: {4 l]
0 j# }* a4 Q" |6 D. ]- h1 g. B/ bset [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 ))6 U& _. _( E: L3 Z( D

3 M7 n3 G5 m5 e: o& y3 ]& h
' I- ]% z# r; P1 r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. y6 s- S) |. a! r/ a;;
及时更新il的评价质量的评价( D3 N4 V* w( l8 w
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' {1 B" [! S- v# x* R+ X
set l (l + 1)
$ Y( `. X: e4 o& D* f& c; u& ]& w]
1 O( e& u5 t) Q7 pend+ B2 f. ]& ^6 A1 C* D( K4 H' j

, R$ c: l; W( p% R4 W7 U; [% o, Qto update-credibility-list
5 u% ?( h1 a3 z+ g3 h7 B8 dlet i 0. E2 Z& t4 W0 N! N" W* ]
while[i < people]6 {; d9 u/ `: J* `4 m* L
[
8 G& X8 W3 {2 }9 D. t7 qlet j 0  a3 X2 e7 L# r
let note 0, M  X! y6 E" m* n7 Z
let k 0
5 X3 F+ O3 [+ ^- }3 P;;
计作出过评价的邻居节点的数目" X1 i8 B$ K: N% O. ~- \& D
while[j < people]" _# ], S. q) e0 r( }4 a& L
[% n3 h7 n9 i* u  k
if (item j( [credibility] of turtle (i + 1)) != -1)/ ~- e* f) ?" ~
;;
判断是否给本turtle的评价质量做出过评价的节点
1 L& t& r! [" B7 o4 L[set note (note + item j ([credibility]of turtle (i + 1)))
# o) ]) `  }; d. j" _, i0 V8 e;;*(exp (-(people - 2)))/(people - 2))]

6 k3 d2 k1 y; [7 k" eset k (k + 1). F) B; r) U7 d% N8 y0 S
]6 N( Z/ y- I2 ]# |+ o
set j (j + 1)
+ @' [9 t2 ]4 T2 d& S7 F) D$ Z]8 a6 O# B$ c  Y* \$ x# x+ ^
set note (note *(exp (- (1 / k)))/ k)
3 b/ I$ t1 I: a) u6 m3 jset credibility-list (replace-item i credibility-list note)
- k) q( o' r; k/ Sset i (i + 1)8 k8 z- c' H. ~3 `- b! q
]
; N8 w9 L$ y" x4 V; c, f, p2 J9 aend
/ H7 [* N+ U+ L- q& x8 \: D: M4 d$ _' j& \6 c3 G( b
to update-global-reputation-list) C$ @: @, }) S
let j 03 L  k# o. `0 }; ~
while[j < people]3 b. B9 F/ S$ f0 f8 G$ Z% T
[3 S- b) g( K) t$ a% H- H) L
let new 0
9 a, q* p1 M3 P! a5 a9 B3 F- X;;
暂存新的一个全局声誉
! [/ V; C$ Y% F; xlet i 0
( `' k: X- o% i7 n$ Slet sum-money 0
( l" Z( A9 Q1 t9 ulet credibility-money 0
+ N6 J) [/ i4 k/ i9 B! r' M) Jwhile [i < people]
  {9 e; f: w  l6 R[
( s% R% D6 n& _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 f7 a" P$ h; R5 M3 }6 K2 _
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); E$ a. ^/ T$ B+ J$ c
set i (i + 1)
4 g& `3 y+ e  _, q/ O; i]
0 `0 ?* o7 Y6 d; ^2 ~/ |, R' o, }let k 03 X- Y) ^" I* F& r. I4 a
let new1 0
% \+ j. i& p- l6 h8 twhile [k < people]8 y6 w5 M/ B3 _; ^. B1 ^
[7 G( H' J: M- b/ z$ X
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)% U* S9 @! l4 i
set k (k + 1)1 W4 k& q+ o9 z/ N) K7 D
]  Y5 D- C) m& E* h, s
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 ~9 X. R3 m, |3 `, A( B6 Sset global-reputation-list (replace-item j global-reputation-list new)9 C8 }/ p+ n4 k: q4 e- |
set j (j + 1)+ B9 H4 h0 x+ L, l6 d1 o) }# R
]
( p4 F0 v9 L: h  P: }end+ Z- V  G. N! \0 N

# J8 K* R/ g  ^) A4 A+ s8 R- }1 E5 j0 `! P
" N) L* X9 u, e- b/ F, O
to get-color
# |, _! Q4 l: W4 X' g$ K
- m0 J# r- y2 J& m; kset color blue
. Z* l  g4 j, F0 K. K0 A
end
3 A. B) X( t( w9 x% [# b0 Q( ]6 n, A9 Y5 j5 ~
to poll-class
7 o8 }3 ~! G* W$ k' B  h3 S4 Qend
6 f5 ?6 r$ t9 d5 V! H: G( ]4 w6 J5 m) k6 }3 U& s
to setup-plot1/ C. R" |. D3 B: @% N+ X$ t
$ ^/ N. w6 Q, k( t
set-current-plot "Trends-of-Local-reputation"
/ U% S0 X  V& R: L

, r' p0 t  T+ Gset-plot-x-range 0 xmax
' e5 O4 o$ r; E. [9 W; V
  }- z  _1 P2 J7 J
set-plot-y-range 0.0 ymax

( O3 m* j0 O9 t3 s6 k8 }3 \( Gend
% E9 {. ^& w" F1 e" d! ^3 I
2 d% g7 E5 b1 m( C. A5 Pto setup-plot2
- `5 a8 ?4 U0 l2 @0 M5 ^( I3 g9 x
) R' l9 _1 J' x8 w) [# iset-current-plot "Trends-of-global-reputation"
; v6 h$ N& ]. _

: P; @/ P6 ~. |' \! d" m6 cset-plot-x-range 0 xmax
* W' b% g& ^9 P- N

! [4 x4 Q) K7 W8 ]/ y. lset-plot-y-range 0.0 ymax

# J) M: e' r% }, e: Jend/ c8 z1 `! Q3 I3 W: k; E- u! D" G
5 n% u  H( j' H3 c& }& l7 H5 K
to setup-plot37 m; p; {3 [9 E

6 s* i5 |! r$ U, fset-current-plot "Trends-of-credibility"
8 l" L: z9 N: X0 i8 R% E

8 ^  |  M) K" e+ i+ p- rset-plot-x-range 0 xmax

$ S# G+ ]2 |1 `# i# t4 E. r9 i" Q8 O6 `) U. O
set-plot-y-range 0.0 ymax

4 z9 S% I. d; Rend
( B8 a" b0 |/ b* E/ G: z3 R6 {7 O& J- u' j+ }! j$ D
to do-plots
3 E+ F+ z+ q6 V3 ^0 [set-current-plot "Trends-of-Local-reputation"
: z& ]. v% O1 L& L, E& oset-current-plot-pen "Honest service"
# h# n7 W- o- \end6 L! C$ y; W# Q2 S5 n" l$ [6 T# ~
: B: Z$ D9 n* S5 `1 c0 q7 E
[ 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! G# t: l2 d; T4 _$ q7 \* B9 ~
" z; Y% ]9 q- S8 v( [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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