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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 O3 U/ h: c" n4 i1 g! {& cto do-business , L9 F( j# s* M1 V. U, Z7 A8 l: `
rt random 360
1 }+ s& Q& O: G4 E, G  W fd 1
" a4 i& l% W) |# E1 S& \ ifelse(other turtles-here != nobody)[* K4 o; ?: \! @) O  [
   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.
& F4 m: _' e$ Z$ D   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 |1 ?5 N9 ], d6 |
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# \( C( d7 H8 u/ M- I
   set [trade-record-one-len] of self length [trade-record-one] of self
, b* Q8 l) u& f$ H: R' I9 h   set trade-record-current( list (timer) (random money-upper-limit))) H! q( L- h6 {; n; O
" k% J1 H) C2 U  K; d8 f8 ^9 m
问题的提示如下:
* P' v1 v. V+ }" g
) z+ ^! D. R0 C- B/ m. oerror while turtle 50 running OF in procedure DO-BUSINESS
7 ~8 n3 }# K) f# Y7 p1 g& E  called by procedure GO
0 Z  ], W  u3 N- y- ]% iOF expected input to be a turtle agentset or turtle but got NOBODY instead.( S2 ?! T0 x$ ^( D
(halted running of go)
- o+ Z8 U% o$ }
; _( Y+ F) [! _! g7 A/ e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~~
, E5 n4 g* O8 Z- G5 x( ?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
. l/ q  J4 \1 Z0 c8 o: e# c' kglobals[
# W/ E% ~$ `5 `" c. v* Jxmax$ O! G8 r! x! A; J# a- h% f
ymax
! p+ \7 F$ n5 ^8 Nglobal-reputation-list( N! n" n6 R. y4 Q: s/ I

* D& g/ n  y7 i: h5 F;;
每一个turtle的全局声誉都存在此LIST& v- U. C$ D; p* I. A6 \9 I! y" N& K
credibility-list
4 f% J  y' y, f# e;;
每一个turtle的评价可信度0 _9 f' Z# H  t5 t. K
honest-service/ {7 C7 s& T1 ]  J5 X. o. g! ]
unhonest-service4 e# b1 W, ~5 a: o
oscillation
9 _3 m  t1 B% D, n! rrand-dynamic! C/ V' g( c; W1 M3 ~
]
/ Q$ q$ Q* z* z* L
7 m7 u( h7 ~9 R7 Sturtles-own[/ b+ z$ [6 M" V. |2 z
trade-record-all
. c( \1 t( x5 _) {8 `;;a list of lists,
trade-record-one组成
. |- {0 K2 Z  Ktrade-record-one& Z" X# S# u# m0 l# 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+ y' L, {* Y9 o9 o

9 B, i5 y# S4 _9 W;;[
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]]; [' X0 l' ?+ i6 Y
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]
: V1 R' b( [) f% }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
3 E2 B0 O) ]& a4 Wneighbor-total
! _( B2 R9 i; N- e' _/ }. n;;
记录该turtle的邻居节点的数目
3 A4 ^& a% G9 D3 v3 R2 ^( _0 m3 ktrade-time+ Y1 U/ E8 x3 \8 I7 _2 O0 N4 h2 l
;;
当前发生交易的turtle的交易时间
. O. `9 ]" Y6 U& F  O( x' oappraise-give% i' a+ x* r! H( l; i7 s5 S
;;
当前发生交易时给出的评价* z; Q( ^6 I% z, a
appraise-receive
, w3 T* ~" `  ?/ i1 x- @;;
当前发生交易时收到的评价
. a0 |# E3 ]1 p- A7 j; }& Rappraise-time! n) b) u- y5 x8 O
;;
当前发生交易时的评价时间
; _$ z3 Q, R1 h5 N: g3 V) K9 @local-reputation-now;;此次交易后相对于对方turtle的局部声誉
& U0 B( f, l8 L( i1 H/ {" u! rtrade-times-total
! h  r' U0 r  h( M3 h6 X;;
与当前turtle的交易总次数) e6 ~- k# ]0 b! S8 t# j
trade-money-total0 b! _. S) u# Q( y+ ]: X
;;
与当前turtle的交易总金额
; w% S9 I) F/ g- olocal-reputation
- S3 J6 X- R/ o$ eglobal-reputation# U9 B& l& C* j( D* a
credibility9 k7 F9 v8 I  t, C) F! k
;;
评价可信度,每次交易后都需要更新2 ?% K( ?& o( b0 e# x
credibility-all
: F6 M! W8 q1 U9 H5 M$ r" N;;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
; J+ ^8 v, x1 s- K
% o; }" L. L8 U$ e" A4 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
) b9 K0 }7 H2 Vcredibility-one& g4 f$ O! C7 D* n
;;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
4 @& @$ J2 Q, S" u1 h( w( f& l) J; l( Zglobal-proportion2 G( i4 t$ P0 v% w8 Z
customer
3 e  R+ Z* f7 T- x& k6 @* Acustomer-no8 ~* f/ k- b! q2 r* A
trust-ok5 a+ T! u* M$ t& Z1 i4 z
trade-record-one-len;;trade-record-one的长度
* d6 d) q- c' {8 h; R" p]
) P4 E" J* m5 W6 W4 ^/ Z5 W1 x" v) ?" b
;;setup procedure
8 _6 R2 b; [/ k: }. X; ~; l* U
& {* b& A: Q( R9 J5 h3 J* B! lto setup
5 p% N5 b9 y  \3 U4 P8 x
# V: B, P& x3 Z# e* E# z9 [- H! t" oca

" ?  b+ L4 D& D6 H4 ~
. p0 |* X! M5 H! v% x: d1 qinitialize-settings

( s2 l9 e2 M" B$ \3 p% Q: C& _" m
) J/ F/ J' }1 G4 g" w- u- |+ @crt people [setup-turtles]

& s* d0 b2 \, L1 w$ g$ Z3 j* o' m, T) d& `
reset-timer

" i& ~  S4 }5 D& U$ R
" e& f$ ^& @# l+ J* |poll-class
1 C8 D5 ]; q; t* |

. Z# S7 Q7 b! e' M  }7 X* `  K1 Ksetup-plots

0 Z/ D1 Q( Y5 e: ]. S0 S; n1 ]- F" y+ |' V. i- W
do-plots

& y; I9 V# \) w6 x% ~5 C/ uend  K" F9 r, f  h- b3 ]8 L: Q
6 L* ]' Z9 h0 {: t- {
to initialize-settings* Z$ q3 x& ]$ d& A( y) |/ ~

# g0 U, n# E  Y% ?. Nset global-reputation-list []

  m9 K* Q' `( o/ k. N# l6 ~
9 a& _) u% T5 h4 m7 [! F, M" hset credibility-list n-values people [0.5]

- @* c* T& E& B5 D' o# o: n& l0 i: h7 O$ k8 ]7 N
set honest-service 0

. F2 t$ _8 j4 L5 f; S
& W+ u' D- D% i% {- D* pset unhonest-service 0
' r; w+ t% M: O" Q7 n
1 L: o& i6 X0 a7 _/ c! F7 S
set oscillation 0
) \% I/ p* ^+ `4 i' ^

, K+ O  t2 [% B; J3 gset rand-dynamic 0

5 i( b  X7 t) o: j# F' M, |" C" Nend
3 q$ M5 `# A: w! I
) l8 R! j- P" }2 V% _/ Z8 Gto setup-turtles
& t  V; J) v6 q8 Z( {: }2 \! Hset shape "person"
  J) ?5 E- D8 K) n2 isetxy random-xcor random-ycor) Z* B& g' C0 j
set trade-record-one []( U- I1 V; L# C) h6 C& N8 g

4 `% G0 c2 y, T0 k$ oset trade-record-all n-values people [(list (? + 1) 0 0)]
& w7 o- U3 w$ M

( `" v* f& D; uset trade-record-current []( d4 Q6 e" G# k) F% L) ?2 c
set credibility-receive []/ n5 _3 P9 ~6 ?* O8 m3 Z
set local-reputation 0.5( G5 F% M$ K+ j4 H
set neighbor-total 04 c/ O0 A5 C2 K/ q3 S4 o" T
set trade-times-total 0! o3 [9 M% b1 M
set trade-money-total 0& Y0 Z# h% E1 v- k+ h4 }7 a, f  x
set customer nobody
/ g  G1 Q4 d+ r( ~# S2 cset credibility-all n-values people [creat-credibility]  w" v$ k0 T( X. N+ j9 f8 d. O! e. d
set credibility n-values people [-1]7 N( Q& |3 a' Z" Y. q* I
get-color
, ~& R2 _  Q6 e2 ~) w
6 h* r( J, R- I$ @$ q
end
6 W! J. {/ b! X, }+ ]3 i( }
( X- _5 J# V: L5 r/ x/ n) Zto-report creat-credibility
6 ~& ?* o7 }) e# [report n-values people [0.5]$ |" ]4 e- I) M5 b9 w8 h
end
$ ~" D2 c8 |% M/ C/ X
4 n. X% x% i" |+ {6 i; ?to setup-plots
% o+ l: p8 T. k. E
/ \6 D- E- _2 }/ ~- fset xmax 30
! U1 R5 j) _. Z! ?
9 U" X! v; M9 N4 J# d0 ~9 ^
set ymax 1.0
7 Q5 q" u+ d/ y
0 U; \4 Y( x' l
clear-all-plots

# m, }/ A2 S$ I% Y7 _
4 y3 i- `  p5 k, ?setup-plot1
7 x. h0 D0 N  J9 J7 h6 {
% o0 _/ C4 ?- _% U3 {7 d
setup-plot2
, m$ u' P8 h7 g! h, k9 @

- i( f8 V0 T+ W9 E8 c; I& q6 osetup-plot3

, m, q+ b" d4 jend
* r7 f3 w1 S- d7 p# E7 N4 m" I; B4 X# ?; j& O& e' |$ {+ h$ L) d! ?
;;run time procedures
% `, D7 h+ [3 P7 s# i4 E% C
) ^0 p& c2 {& Z- F  Tto go
& z: T" d* F3 [! C" q& @# s: K6 e, ~. G- q2 T6 T  Q
ask turtles [do-business]

1 G4 N6 f5 E8 C, S5 {2 send7 {; N7 I( }( Q' E5 Y
- W; ]' \, A5 B3 _  @9 \
to do-business
( y0 X1 U# ~& j' W: o) @

1 W1 [& B, k' I
* p4 h' n% |% T3 T) I5 Rrt random 360

% F3 L% q; x/ @
) Q; [$ y5 g% X9 Qfd 1
  d& F8 h4 ^/ _; w" v

& T3 }+ `% N( ~/ [! s  Rifelse(other turtles-here != nobody)[

& U8 q3 h( s* T; f' T/ L9 a" u5 F8 t4 G, b6 L
set customer one-of other turtles-here
$ M. }/ R8 x) t" I( O; ~

2 D4 @; U( |) V0 D;; set [customer] of customer myself
: |/ v6 U' U  D( s  K  D

/ n7 {( D; _, B6 E2 M) ~set [trade-record-one] of self item (([who] of customer) - 1)! i- W! n( X. o  ~0 K
[trade-record-all]of self( ]. ~; Q  x0 _) d5 Y  G
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ v; x: Z2 i+ i0 D
8 J8 K3 V7 I1 p8 z. Z1 I$ r1 L
set [trade-record-one] of customer item (([who] of self) - 1)( b- p  v% ^4 ~0 p
[trade-record-all]of customer

7 l0 T. e. \0 p/ W  P/ ~1 e
9 v5 e0 Q% h+ ]+ g, z: j% vset [trade-record-one-len] of self length [trade-record-one] of self

+ e+ y  k. \8 q+ |2 y9 u; R# P9 R6 ^* ~1 Z1 I+ f( h+ s% r0 j
set trade-record-current( list (timer) (random money-upper-limit))

( f8 B0 U2 y- X7 e+ K
: K- o/ O9 T. b4 H  s# \+ pask self [do-trust]' @/ v+ w/ W, c; H, s) |
;;
先求ij的信任度, e0 Z* a: S8 `- E. w1 D. d) j
2 _: v% Q5 y- C" h3 A
if ([trust-ok] of self)% O& r3 @! Q- T
;;
根据ij的信任度来决定是否与j进行交易[+ u1 P, f1 a& K; _0 O$ g/ O
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) P1 G- H4 W, T7 H
, j! a$ W/ W8 z8 m[

( q: V( V! ?0 B( K
- v. p' q8 ~) I3 y- ^# qdo-trade
1 [: u, F5 |6 R
% `, \7 g& ~: ]. U% @8 y  ?8 v
update-credibility-ijl
1 F9 U( [3 r6 e' a6 T8 G
% w8 c' }8 O0 [
update-credibility-list+ z7 o+ T" H2 U, O- m8 e+ Z" V* V# g4 H
" z+ H$ q3 }" O' h" C4 ?& U' O
/ X, w, M- y' r( g5 X4 d
update-global-reputation-list

& `& q& p4 Q0 H+ n6 |: B8 M+ {* _* Y" a& g$ I2 x+ i5 p6 W: F
poll-class
5 o, q% |3 r4 \& x; S1 N5 U/ j

0 G. N" v& f& }& q  G! Xget-color

8 x* w+ N7 ^9 z5 W3 R( E
2 h9 {5 S1 o' \! ]]]( r* G& P. H" k+ @, Y- x

; F  b  r9 h9 q; e# s; {. W2 s6 B;;
如果所得的信任度满足条件,则进行交易
+ h+ y. L6 B" B/ p7 H7 `& v
' t0 B- K! B9 Z2 d[
+ C) g* v& ~: ^2 g$ Z( B2 E

6 Z  x/ k  T) ], \rt random 360
  e/ s! `* |2 l; k; I! Y! ]
, q0 O" P: {" c4 L& _' j6 k
fd 1

9 [2 W9 V( C& D7 S4 q4 P5 M6 ~; U# e5 y) ~
]
0 r2 m, _5 U7 x- N

0 W1 p/ E  V6 mend
0 _( W% w" n3 f! s  S0 W

% z: n+ S6 J4 c, c& Fto do-trust
7 T7 b$ ~3 J9 v6 |- t) Wset trust-ok False5 e# Z# l" \' ^% H% V. d9 N

9 O4 }9 g& Q9 x' z% F
; p6 {8 Y# F+ R1 M$ }3 d: ~
let max-trade-times 0
" Z2 W; S1 U9 g6 M3 |2 U1 ~. @) iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 R! y5 ~1 o4 Q" klet max-trade-money 05 E; P- |& m8 K+ [
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% v, w2 `# _- J. f6 a
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 P5 E1 k5 |# X' L/ Y- Y
) D; `7 F* w/ |! M: t8 a/ H8 V) f

- A2 s" X" m2 q5 s) e+ ~+ j' `& |$ \6 s% hget-global-proportion( R! @+ z' D2 A( U) L/ ?
let trust-value
' \: J0 d8 |! g. U# g! ^' mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
1 s! K' `4 y8 i0 T9 T. [
if(trust-value > trade-trust-value)
" t! x( e9 V  C[set trust-ok true]
& Q  o; g9 @! [$ ~" r5 }) j$ lend. @7 P; \- m' ?+ z; y  c

. i; l- C. p7 P$ i, J9 f2 C% gto get-global-proportion
1 \& K# o* Z& l% S; ~ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 t% N. J3 D% f+ M/ @* d
[set global-proportion 0]
2 l; q6 G; z0 L$ p9 p[let i 0
9 L& f3 z" \; T# U) m1 Llet sum-money 0
- [; ?3 o, ^1 x9 Z! B, swhile[ i < people]1 [4 u+ u, K7 W8 N# N9 [
[% {; v3 e. ?. I: t& ^) a% w$ `
if( length (item i
; I7 i; A, r+ {0 _[trade-record-all] of customer) > 3 )

5 y3 S! R8 P' o2 M+ S[
1 C" R3 L5 G- R) B% N. _set sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 d$ \) p8 a" [% g; G
]: [' G* K* c( v5 }; u- ~* @! m
]# ]. h2 Z% j' u# ?! z: ?
let j 0
- f8 u1 w4 a3 b3 b+ {# p& tlet note 0
8 T& Q+ \# T2 Q: o2 t. E# p) awhile[ j < people]4 [& ~4 Y; ?% R9 [9 B8 H
[
; a8 ]8 i6 k/ E) aif( length (item i
' T$ v: P! ^( d0 h[trade-record-all] of customer) > 3 )
: ]# u; Z- F* k% ~2 u
[1 A- A1 X) U4 r" p0 H
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 t9 M2 p" s- Y9 T! O! d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 I- m  V% \* f  |" l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 p1 @9 R/ ?3 X9 J9 @" s. v]
: I: f# ^, A8 \# \& ~]
- o2 ?+ f5 M6 C2 [0 K8 ^set global-proportion note
. F. \* J& T6 }2 K  W( m6 _* M7 m]* j7 V+ [- v/ i) l( Q8 l
end
: m: u: W- h9 ?% x) [2 S% E# ?
& H: {* o" x) f: z7 k( j7 fto do-trade
3 L0 D1 I5 R/ _* L;;
这个过程实际上是给双方作出评价的过程
# m- Q& w# C0 H+ q9 o2 Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ }2 j2 P/ @, p3 l) W' J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  D2 w7 w7 y, ~8 I7 O
set trade-record-current lput(timer) trade-record-current+ e: h! p' B# u5 u; v" l
;;
评价时间* }6 S! E7 u; }+ n) o: Y) ]3 d
ask myself [6 K' L/ h4 w4 S- M
update-local-reputation* y" Y% f! j9 [+ W9 |
set trade-record-current lput([local-reputation] of myself) trade-record-current7 H4 J7 ], Q8 ^' H" F% Y
]+ T6 _5 p6 \( U2 m# i7 t' U: T
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 P' R  i/ v9 y. p% T0 f;;
将此次交易的记录加入到trade-record-one! w6 r: z- H) v" }, h, Z
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), Y% R$ B3 `  l- p+ R
let note (item 2 trade-record-current )
- q9 f$ I  u! b( Iset trade-record-current# o7 k- |2 f8 R! e4 z% r
(replace-item 2 trade-record-current (item 3 trade-record-current))
% ], f; u" _& d/ H5 z& T
set trade-record-current, Z4 L2 m' g- ~7 G+ o* \. J
(replace-item 3 trade-record-current note)% [+ o" H1 Q9 V/ F( P. x, s

1 B+ @2 j5 F: y5 w& S
$ q" \+ ~8 \: u2 W$ J8 n
ask customer [
1 Q6 U& x! F4 S5 c0 m$ [update-local-reputation
3 \: f5 ^$ T# [9 y5 t( M- sset trade-record-current0 V. Y5 s& ?0 Z1 u( K( @
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  T4 e# F4 L6 I0 F. U2 `$ W
]) [8 D8 m% S1 Z9 s2 x% \8 K3 T( h

* T8 F! C/ a% d8 J3 E7 Q
4 g6 ~; Y$ i1 W, H9 O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ n6 ]+ w* Z- d' r
6 Y! I' R9 z5 a0 P. y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  q6 ^8 F: X( C' B2 r+ e! [8 v;;
将此次交易的记录加入到customertrade-record-all
  ^( R/ ^* \& Xend2 v  R; ~6 g: A( o3 L+ d, d

2 {: s. b& S0 C- \to update-local-reputation: \1 ~# v4 A* z% y1 a* s
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ v) W3 z) w. D2 D, N+ b7 F5 i7 O& A2 b

3 ?0 ]9 ?) @4 v;;if [trade-record-one-len] of myself > 3
( c% h  L; P6 l  O5 k  o
update-neighbor-total
) z7 w3 B' M* a2 K  m;;
更新邻居节点的数目,在此进行  ]( y* P6 L) k2 f$ Z
let i 3! Z6 ]( [" F! S/ g3 x
let sum-time 0! G3 s( ~2 V! p) ~6 r" x
while[i < [trade-record-one-len] of myself]& Q  a, D5 j$ p; d* M
[
* J0 x0 x1 m7 E5 F& \2 K  s: |set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 L4 ~! t: A3 n9 M6 Yset i
# U8 ?, f; r; ~8 L. R- h0 n( i + 1)

# }; m' a& k& Z, S]
# ?" a9 _- N6 m/ m- \let j 3! U6 T0 I2 A+ V, S1 |( Z2 e
let sum-money 06 G* x! ^% o9 E+ e6 }0 B3 n# X
while[j < [trade-record-one-len] of myself]
% r0 ]# d8 w1 u; ~[
+ O. x- H  E9 E- ^; ]4 ?3 Z& qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)$ i) ~! X, B, }# {+ |2 H- s& }+ ^' a
set j
1 n; p. o7 C- s5 ?& b# ~( j + 1)
. e$ M5 ~6 v  t( K
]
6 d- y5 \1 Y4 B- F; [let k 3+ N0 @  j3 O9 q" W% E- p: L" _
let power 0+ Q' D# y# }- J1 u+ a3 d
let local 00 D; p+ O) _" E4 Y$ i/ p
while [k <[trade-record-one-len] of myself]
( g6 Z4 w) R1 M$ `- c) v4 U; W[
% C! O& U8 r* ~% {3 J( K2 h: Jset 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) / S  Q- ]. k6 v; j) z8 `5 y
set k (k + 1)
6 J9 G( }7 f- D' E# l* n]4 F3 i/ {3 {0 D+ ?; g9 |, T
set [local-reputation] of myself (local)0 B" z( r9 H+ B
end7 v9 x0 a6 ^- Q8 d- ?6 z  [0 _
7 r/ T7 j  W" Y/ `
to update-neighbor-total2 j8 M6 Z; L" F. {! Y$ ?, `2 @6 |# A

, \) n+ Y, H6 p) [9 Q* nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# {" ], ^# o% Y' W5 {& x5 S" t! k( I6 K  }& c) T# W7 U

; T& b6 p* T9 g1 S' y. S' |; Vend
; w0 z2 C- J: e( Z1 O" \  C7 W# v
to update-credibility-ijl
' r+ R6 @0 o3 r5 C) X- V9 f' Q5 g' J, i6 x5 q  w% A
;;
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。( s8 x4 `* {/ \- @) i
let l 0
' k& Y9 N, B. G* o1 X0 T$ vwhile[ l < people ]
3 R; S- h; d" q7 Z2 H5 S6 x( k% L;;
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 G2 W" e, I" W' S5 E( x# f1 I[0 w& I+ q$ y! H" C* w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 G% Q; m+ d/ O0 h9 w4 u% R2 wif (trade-record-one-j-l-len > 3): U6 h- ~+ ^8 ^( y; |
[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
9 r0 v3 ~' Z8 \let i 30 ^% W3 b- ~: a1 M/ c# g; `- q2 L" k
let sum-time 0
! |! V* _' {; M2 V# h" d2 owhile[i < trade-record-one-len]
9 [, m7 \0 K& D/ c4 f/ A[
) n8 c- F% t; I% U8 J/ |% Jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 v+ y" M: n5 N& }' l
set i
& {9 V" \" d; Q) M; y( i + 1)
3 U6 f& K( Z( m9 M. b) J
]
# G& C3 P& O: c2 Flet credibility-i-j-l 00 A2 Q3 v1 {# r" Z# N* k) E+ E
;;i
评价(jjl的评价)
1 K( f  B0 h4 Q2 v# Qlet j 3
! s; V  L0 Z: `; H7 C: P$ M; Jlet k 4
- i: z3 n( T* `while[j < trade-record-one-len]
8 ?2 Z$ f  \9 U[
- ?1 Q2 e3 P; A/ w2 ?: Z- ?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9 ^) Y; w4 B# l4 T* T% r; Q+ r% V
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)
' ]. ]  w8 Z$ r$ R. s0 ^5 e' bset j
  H9 _+ L3 u% a$ B/ Q. l. ^( j + 1)
3 @6 K9 _" [! _8 J/ @
]/ X* O: g+ m* }# E' X
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 ))- G7 R/ a1 A) b9 O+ ?! Y; |7 M2 k

/ v4 ~: ?' X6 n

9 w$ h) J: h$ h% Y4 elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 T' n5 X1 [* i+ H% e
;;
及时更新il的评价质量的评价* O) p. p. U- E5 S
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( P8 m7 @- C' w  G
set l (l + 1)! {. g6 n8 I) J( {& @
]  l, _# N* ]6 R& y. Z0 H; e- z
end
3 g* U$ S3 ~6 O# t# c! t& h$ I. O0 e& B
to update-credibility-list
9 c* F/ [# G; S# I: ]+ x+ Alet i 0- f: s% E$ I2 i. Q
while[i < people]
$ h& M0 d5 o' q# Z$ w[5 F5 n% U* H; @- X; h2 f, u: n
let j 0
. c  A  m  l$ N; \, q* s. m! alet note 00 Y( i- P* U9 ]2 T7 X, ~, [/ {. z
let k 06 l- \, I4 y/ H4 j0 k  D1 _& _
;;
计作出过评价的邻居节点的数目# D7 G: P) j/ F" @  Y( o+ ~
while[j < people]
) U6 n# S8 m- r0 \[
& j0 H- V' _. ?% F) iif (item j( [credibility] of turtle (i + 1)) != -1)8 ^; H/ ]) I3 j( @+ T' Z* F  s
;;
判断是否给本turtle的评价质量做出过评价的节点' A' h# M# B4 R! T/ L7 C2 F
[set note (note + item j ([credibility]of turtle (i + 1)))
$ |2 q8 e/ P4 Z8 D1 ]6 @4 h, W;;*(exp (-(people - 2)))/(people - 2))]

$ F" R6 L! \* A3 k) E( Pset k (k + 1)% z, o" r7 Y* l% }, e$ V/ h9 i4 @
]. E* E7 T7 F( r2 C0 c8 J
set j (j + 1); D0 s7 I; Y9 E. }
]. ~* o( _2 t: n" O* H2 [; a3 H
set note (note *(exp (- (1 / k)))/ k)
4 K* V8 p8 R0 J8 `set credibility-list (replace-item i credibility-list note)
3 Z2 V7 H" w2 |- \set i (i + 1)- l; h+ S6 l, k' w% T. H% `& X$ R
]
4 r" O6 a' k! g7 R' C) h% eend
8 c, C% g( @/ N; T' B* R9 K+ \7 k7 a. H/ ~8 S" k
to update-global-reputation-list! K* h' ]% e7 `" Q
let j 0
; t" _  e$ V5 w) L* ]. }# Qwhile[j < people]
; ^  f; {8 Y! e[1 u; F# [( x" h% Y2 g
let new 0
0 a( M: M( @' m8 d;;
暂存新的一个全局声誉
9 x' m0 H  g2 A5 g# W; p. jlet i 06 j8 j& @9 x2 F/ A# m9 F8 h
let sum-money 0/ K9 N6 h9 X* }  {$ x& W- {' Q
let credibility-money 0
) o4 \1 ~+ ?  S, t$ Hwhile [i < people]5 B1 m1 p+ N3 l# E: w$ D9 e6 c
[9 \; l' H" Y/ [5 R0 g5 l$ U
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 {7 X; \; V3 ^! u$ W( {: Y0 A1 [; Cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 y% }, ?. _1 E, {
set i (i + 1)1 u+ V, D' C) _  T5 p
]
$ m+ E. ?( J% Alet k 0( F9 F$ z, u' o; p3 @! K
let new1 0
# y1 f7 w5 s* N$ mwhile [k < people]0 t: @4 z; F! {
[
$ f7 d3 l6 a0 W5 @6 Yset 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)
; A# X! u" r4 @4 \* S1 X! |set k (k + 1)
" b. s2 p( y! m% A]: C! A% J  W5 P9 ]0 z5 B
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. v; |; r$ J: i/ M6 m! X% }) Iset global-reputation-list (replace-item j global-reputation-list new)& i* V# `1 W4 {8 Z& M
set j (j + 1): \# \" e  Y2 m: f& E
]: L! B: L. B; n
end
/ _. D- e) R( I0 q! S8 E! m- @+ _, i$ H9 J2 e6 n3 {
8 ^( F' \: C, e

; i' p) @( f& A. [, N) W$ O1 Pto get-color
7 `. z2 A9 m5 N$ r# M# A" ?0 v, n  P' O9 |
set color blue
2 I" r/ ~  b+ P4 e* x7 z
end
2 Z4 ]/ \/ Y! }( s+ m5 b# b
  z( a, K- ]. ]) z8 \: {# Uto poll-class, g) Q/ s" E3 J0 s
end
4 O, ^& @! _7 z6 h/ A& ^* w# e; z6 a( e# e' j4 \" l
to setup-plot18 G( p" j1 T, I+ B' Y% S6 h

  R2 {# |* h; s2 H; i  D) Nset-current-plot "Trends-of-Local-reputation"
6 {* i' L& P, ^0 G9 m0 C  X
/ M1 k/ `# W7 y; J$ x
set-plot-x-range 0 xmax
9 ~% m5 m' _$ ^8 k3 |( ~

) U/ c' Q- o+ Q6 _* P2 R) ^set-plot-y-range 0.0 ymax
6 d. v  H6 X& C4 v( w
end' J: ~' E0 }2 h- i% r. a
* r: l" ^! q1 h
to setup-plot2; W& W9 A4 R3 {& A$ H' ?

6 t- N/ @  @3 }5 M9 c5 oset-current-plot "Trends-of-global-reputation"

" W7 ^  U! f0 ~+ n" S
% Z4 E3 ?. M: O# g# ~# K. Aset-plot-x-range 0 xmax
0 j- I! J# k/ a, X+ n& _# O

1 M5 e8 ?3 c' q2 \0 j6 M/ Cset-plot-y-range 0.0 ymax

; u$ [$ W% v4 I) Z/ p/ [, Eend
  n. _( E. R4 `1 N0 Q  L
* b% I6 _$ e; ]$ Xto setup-plot3' X5 Q1 Q: |2 H9 _
5 I; D( U* X& Y& J, D; D
set-current-plot "Trends-of-credibility"

, ?* T1 @. c+ p( m: o
% O+ E; J4 I3 I% H7 n7 Xset-plot-x-range 0 xmax

$ Z, h3 K7 f0 E6 S' R" K) A  O" u3 Y$ y* s( P1 M3 Y
set-plot-y-range 0.0 ymax

6 Z: a: X+ x% D( b% O; ?end) F5 M8 W% g# k3 @5 H
& r. `4 n6 L3 o' O+ ]
to do-plots
' d+ j, `5 X" Lset-current-plot "Trends-of-Local-reputation"+ K& B) B! [) w; \" J3 r6 b9 B' x
set-current-plot-pen "Honest service"
* K" c" f2 i; s0 H9 C  M0 nend
9 B$ r9 d( J  Z$ k, ~. b3 R0 M# N, @  u" x: ]
[ 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: ^- A* w: V# Z7 A. i
; i  ]- l( G; E6 ?9 V2 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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