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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:0 ^- v2 L+ ]0 ]
to do-business / b  ?, b: J' m& J1 _3 @6 s
rt random 360; o4 {: C& l4 o1 @
fd 1$ ~  s7 \2 f) v) |+ m
ifelse(other turtles-here != nobody)[6 \9 ^' @  g8 i9 g4 L1 n  G
   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./ _% G: k/ N6 W, Z% [0 n; Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, r+ K5 Z& P5 b2 O: L! x   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 N# a( K3 L6 q) p- C
   set [trade-record-one-len] of self length [trade-record-one] of self6 ~' |. l+ l. p! C! ~' d( z% J
   set trade-record-current( list (timer) (random money-upper-limit))
) h+ y6 E% [7 M2 n- K1 H& j: q8 O9 O7 S- t
问题的提示如下:
5 j; _+ h( J- q, O
; a8 |4 J5 j4 Z( L! ?" Eerror while turtle 50 running OF in procedure DO-BUSINESS
/ l5 k$ q: d8 M( K  N; p  called by procedure GO( g3 J* n! [/ h6 L9 G9 r
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 X  l  g: u/ Q# y. u. S& R' P2 `
(halted running of go)( M  l3 b  \5 _

8 P9 N$ B4 m: {5 c; ~# k8 w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 n  m: J5 n6 m& z% q, v& V( \  P3 J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( {  t( T2 i# y1 S
globals[
8 q( {0 t3 P; Ixmax
1 n* K7 z" g: c9 w9 x+ ?+ Tymax: |  C* \  b- N5 \% i
global-reputation-list! T; [8 z) ?8 a# B
& \! B: t  j8 \* X* a  t, x  I
;;
每一个turtle的全局声誉都存在此LIST
" L4 m4 v- P) ucredibility-list
+ K1 P+ ~; n- L- ?/ Z0 E$ o;;
每一个turtle的评价可信度
# {2 E$ I1 ?% Z( qhonest-service
, t5 ]  g4 p+ g/ dunhonest-service' `# G7 G. v) o( N
oscillation
9 G, S  M5 J, r$ S; a/ l. Z2 Krand-dynamic. |  K0 Q" \1 }
]
& z! E. z# f- h# _  w% M9 C6 ]+ @, h5 J# J5 m1 y7 @2 c8 J( B
turtles-own[
  V$ Q) F; s3 v8 U' V! f0 ^: i) Gtrade-record-all# N1 t  Y) s0 U
;;a list of lists,
trade-record-one组成
, X# A6 {8 I4 g" @* Utrade-record-one
  `0 }; }7 o6 Q8 s, Q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 N8 Y9 Y0 z2 w! [' `3 L
# |: ]7 X' q: Y% Y1 H/ A( f
;;[
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]]7 H) W3 Y4 Z; E3 R9 ~$ i6 F6 x
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]& B3 u, l! X; X- n7 Y& Y
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
% o# l5 T! ?; i! F# M" Sneighbor-total( L3 ?6 M6 K" y0 k4 W, {& U
;;
记录该turtle的邻居节点的数目$ |: c" ?# z+ u7 y( O
trade-time: I( S7 Z$ Q+ `
;;
当前发生交易的turtle的交易时间6 b3 R2 M+ h* i% x
appraise-give; V6 {5 A& [# ~
;;
当前发生交易时给出的评价
: |+ |3 A2 O& L  E3 R5 ?0 @3 uappraise-receive
( L( p3 f+ {+ R; R/ R; ];;
当前发生交易时收到的评价
6 G- d8 J% T+ X1 d  sappraise-time
9 n* N4 x; }* p% ]  c* r9 a! A;;
当前发生交易时的评价时间
% b5 `' C5 m8 d0 ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
; V2 e: u4 c1 R# b8 H2 V5 m9 Jtrade-times-total
* I/ n  a0 h; c1 \/ g# X;;
与当前turtle的交易总次数
/ `+ o5 e" a) i% Qtrade-money-total
. w0 Y& d, x9 R;;
与当前turtle的交易总金额3 f7 f9 X( `. D, c
local-reputation6 H* Y+ _, D% a6 j
global-reputation
3 @) W$ d+ ^7 mcredibility
! z* u9 H, ^- l5 j& V;;
评价可信度,每次交易后都需要更新
4 x0 ^# y6 L7 R( u: [: b. A& Pcredibility-all1 a" ]! h0 K$ C: N$ \& z. I
;;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# d; T- w+ W; i5 q/ ^3 t% c; f3 i

, m5 u1 o: y* T% H5 _1 _;;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+ }1 c4 f3 x; c. l& j
credibility-one
6 `" K5 j. P& I) ]) C. Z2 J) }6 Z$ E6 F;;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, p4 }  \/ D1 }  ^$ N
global-proportion( W1 V* `! d) k5 Y
customer! A- }: K7 y& g: o6 ]1 a6 N
customer-no
  X  x3 M" U5 R, g4 F# g3 Y6 htrust-ok
2 C! j% \4 Q" ^' i5 gtrade-record-one-len;;trade-record-one的长度8 }1 p7 z$ F6 I# e: I
]/ u. k% H+ z" y# q- k2 a1 C
+ D! p3 m4 Z* f' d5 ~. k3 J
;;setup procedure
" M6 U' E! T5 ~9 ]8 E2 x% Z2 G% [* W
to setup) X- B  U3 L  v( ]

. b* r' l2 w/ V$ r; I; ^* Qca
" l, K/ |, l5 u) S8 r' R
" C! U5 K: S8 p- [( a" r- t
initialize-settings
% P. {! Q7 c/ J6 s

% ~1 j0 ?, T7 q$ e& jcrt people [setup-turtles]

! k! T9 X* T4 b: i! n# ^4 I; ^& \" b) i; C  r
reset-timer
# y( E  \5 Q: L& k. D
1 ]& c6 v3 E9 }: F2 e
poll-class

8 J- W& j6 s) S2 q: c4 b; }  z, n. \9 H$ g5 W( o3 \8 y: l' g/ ?
setup-plots
& [' @3 ~2 P6 m4 N/ @/ P
5 a2 b8 Y0 j4 q/ F& s5 D5 C+ z) a( `
do-plots
3 A8 y+ w! t& Y) U% y
end4 Q. l) i" J. L' J

+ w5 x$ [' Z' ]" y* ito initialize-settings5 I) x0 I' z3 A, m( s8 ?1 O8 ~' m/ O

# a8 a" \+ N3 Q* y: H: ?set global-reputation-list []

) v7 B0 k1 i$ X  Z9 E3 p" |
6 h. H4 q6 u' x+ n9 Nset credibility-list n-values people [0.5]

6 q- F: p& N& z! _  J' C1 m0 w6 c, B% _# @' q) _
set honest-service 0

% q0 z5 k( @! V* S( r  A* U9 N8 \2 v! _  t1 b& g9 g& n
set unhonest-service 0

! n9 e. e3 l, l) b. t/ S* |, [5 ~& T2 C3 }% ~, {
set oscillation 0
- S+ i+ n8 y. z3 \: c

! H3 O5 ~8 }+ V9 W# `* i2 Yset rand-dynamic 0
/ L' ]: |1 s7 }
end& @* D* }; ^1 A9 b7 Y7 a

9 Y2 L( r+ V) E5 f  Rto setup-turtles
) k. V( \8 U8 Y/ Cset shape "person"
" p) x: ]& ~6 m" Q# Usetxy random-xcor random-ycor- i1 m% d% |4 j, |; p9 M
set trade-record-one []
: S/ c" U3 R1 u$ E% Y

% C! S" y1 E( u. @: w/ K) vset trade-record-all n-values people [(list (? + 1) 0 0)]   y& ^- d$ t' F3 h
, Q; g+ J1 R4 u5 d; z2 [7 w8 B
set trade-record-current []
6 R0 ~( o. j% w$ K1 d% u/ o# mset credibility-receive []
( L7 m+ S0 @2 V" w4 i( L) C- Iset local-reputation 0.5
; w: c2 a5 J/ {. |! c5 hset neighbor-total 04 `; x+ F  L6 t$ G/ q2 `# J
set trade-times-total 0
9 w1 G2 O/ a5 j( mset trade-money-total 0
; [- K+ w# |* A( Z; I7 Wset customer nobody& d& Y  ~; d; `: K4 k0 A
set credibility-all n-values people [creat-credibility]: c- l/ f( j8 ~
set credibility n-values people [-1]/ S, J" e8 }. J- I; h
get-color
1 h: @5 i/ @1 y/ Y- f; A4 B
$ G  V5 d# _! R7 }8 M. E
end" ~/ O) W1 i* M# X8 B- W

% ?/ l/ M- d. L: c1 ~to-report creat-credibility
8 H8 g6 ~3 M0 [3 preport n-values people [0.5]
& U% x: t6 N" T" x( P+ dend
' z, ]3 F0 R" j" }3 W+ |7 T
4 g$ r" b. Z. {to setup-plots4 o0 Q7 H$ f! J! f9 z9 |
0 M0 `; b# W# ?2 E+ d5 ]
set xmax 30

2 F2 Z8 x8 J* T7 J  n7 U9 r5 Y4 u! n
set ymax 1.0

/ X* H5 v& m4 r* n; P- M
: ]1 m2 j5 A0 Q2 f/ Sclear-all-plots
2 f" i- D. ]# `8 W

, [6 [: T. S7 I3 [$ _' {3 Isetup-plot1

4 m" N9 a0 B" q; Y
; s% B- p! m4 H+ Ysetup-plot2
' o" v! M. Z7 P" u. V0 G. w

0 Y; A, ?9 ?, q- wsetup-plot3
2 y2 D+ m# \, X1 |" ~
end# d! O, }5 y/ N, q' @
2 G  [2 l# y1 q9 w, b
;;run time procedures
1 }- N9 F( j; E* R( K& @6 B8 f% L' M: e6 v0 b) L
to go: V) j: F/ r+ f* D: G' a8 }5 A* a2 K

6 H) A. P# S. ^. L. W7 b2 C. nask turtles [do-business]

3 N, a  s9 I, ^end* C& l7 a) b/ w! q# g) m5 N

8 O5 s9 f2 a% [9 s6 ?. ?& k) e* ~to do-business
& n* L5 P, [" W
: a: R' s9 D/ \9 P; }& J

  L' p9 {0 X# R. I% E4 B+ `rt random 360
/ q9 e5 L# L* L
& S1 [) M% C, e
fd 1
- g+ v  c4 l5 x6 [2 N

0 G0 ]) R9 A) ~; g0 aifelse(other turtles-here != nobody)[
2 J: u, O2 P# ]  C+ C: e

1 w& r) {0 S' Q: C1 t. Qset customer one-of other turtles-here

/ M9 R9 |! B0 o; g4 l, N
( l9 O: P) `" f0 T;; set [customer] of customer myself

4 l4 M! @9 d! Q4 L' C! L+ G) Q2 M; O" e0 y
set [trade-record-one] of self item (([who] of customer) - 1)( k* a' W' @# H/ n0 M" P5 B) I+ t' ^
[trade-record-all]of self# w, g( [  M: K6 w" m$ F
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 p0 S/ e6 D1 ]/ D( \* m6 j
4 a1 U) c5 E1 T. n! `4 |2 ^set [trade-record-one] of customer item (([who] of self) - 1)
6 E) q' v* s& I[trade-record-all]of customer
7 }  m8 |! r* X, [% P: G7 Z# h: n( J; a
5 D9 f3 {+ d8 n3 w
set [trade-record-one-len] of self length [trade-record-one] of self
. O2 c4 O! o  I/ U
. Q7 e( x4 q. p# H$ b& [
set trade-record-current( list (timer) (random money-upper-limit))

, Q3 g+ E. y' _
$ q2 @6 Y. {; M' I: [) t! }ask self [do-trust]
) W0 M& T% _! x9 H  Z8 T;;
先求ij的信任度
5 ]6 g$ T$ D" ^: H) C; m1 u9 P" I: \; e, y% X7 \" l7 H5 G
if ([trust-ok] of self). ]9 E( D) V5 K9 ~# K5 g; `' X* t
;;
根据ij的信任度来决定是否与j进行交易[" P, O' K3 l! D( B6 K! H- M0 z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, N4 y) G! K! Y/ |* \. l
1 {8 N: X5 O- u$ Y2 B' @9 K, L[
6 o% d3 g; {: z3 J% |

8 Z2 d1 |) Q" a) ~! jdo-trade

/ }! f  q; `# n9 W7 s! u9 X) i! T4 f" O' ^* v
update-credibility-ijl
$ A7 t  j, M# M: h$ w

6 O8 G: A6 ~/ a4 q7 Nupdate-credibility-list
) n  S0 d: w1 I
! W& \4 U3 G9 G. J* T- Y- f4 m

4 E2 n9 `: f: J0 Jupdate-global-reputation-list

6 l$ v3 ?# q4 u, t% d( p; ^( v. k* B1 B+ x3 _
poll-class

  |0 a9 Q. ]- n" G* ]
4 i! I* _2 H( K* x' B4 Eget-color

3 [' ]. n* M" v- _. o
) F, U' Z+ V9 s  l. h3 g# d9 J2 `! B) ]]]
  k8 q- r; c5 {5 b' V& _2 O- y8 |5 g4 D# |- i8 S) O, l
;;
如果所得的信任度满足条件,则进行交易
2 K" T1 G7 y. G' v8 f
, W4 N5 u: x3 K3 H/ b! t[

( `& M, P. @  Y
, F% Q+ S* a, q) m: a# Jrt random 360
# ?; j) P7 {" n5 }

! P8 X: {2 H+ Z, l; Tfd 1

3 f) Q; n7 A' K1 r! d
% c( [1 C: }9 `: A  b9 |]

6 V5 j+ F( o% c# t+ K7 F/ I$ J5 ~+ e+ [' y
end
' d; y9 I1 K0 k4 r4 P2 v

: W! p3 E7 S+ D# Z4 }to do-trust
/ |  o4 f- @) K  r3 }1 p- o. g7 Nset trust-ok False
5 z9 Y3 {& ], Q
8 q  h! y( G( y" D

! L- C1 J1 J! S5 Q% |9 v2 E, Plet max-trade-times 01 S, y0 |% u0 g7 V4 v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 Y! v/ D3 t. K1 Z: k% o
let max-trade-money 0$ P7 K( c: ^/ [" x. g2 J7 e) D5 H+ U
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. a( v! D# \* g7 T! Z- R' flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). X/ `( T( s" A3 }/ J! w
* B7 b3 T' Q/ a0 f1 W! F1 S5 w

4 N: e3 c! x9 K" s5 m2 ^' qget-global-proportion7 B* P6 }  ^. p
let trust-value4 i; l3 C% |4 l" p
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)
4 R: v. d/ Q* ~' |
if(trust-value > trade-trust-value)0 V# c, {3 L: O& L
[set trust-ok true]* U3 b- W% \* Y1 Z5 U8 U
end9 b; u- M9 o% l7 u; Q
& Q& H( f7 r/ x, T7 w4 ]( R
to get-global-proportion
' z' A9 G+ q3 a% h+ [3 Uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 t! e$ c' [4 p
[set global-proportion 0]4 g) J5 p) {. F- K# T
[let i 0# G6 m# c' ?9 k. s2 J; |
let sum-money 0! h# u* `& C% P3 E' x
while[ i < people]$ U% _& P  k. T, b
[
6 Q4 F" O$ Z. g2 \# l' U4 m& ^if( length (item i- v6 n$ r; b0 `' o2 s
[trade-record-all] of customer) > 3 )
6 ~- f2 Z# M# A# p+ I) i; j2 ~1 X
[
# v$ y% |, H- `% n) D6 G) Pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))' t8 L8 w/ n, q- P
]
* D8 s7 M4 I/ o4 A]/ t% m6 }" @! o8 a
let j 0
! h2 _1 l$ j" Xlet note 05 y% {" _- E, o$ h; k$ s6 M6 R
while[ j < people]! q" j) e3 |  K; m8 d
[
5 H3 ]1 G" ~/ H8 B) n  H' dif( length (item i
4 ^! }' D' l  j- |( Z[trade-record-all] of customer) > 3 )
# r: n* H8 l$ P9 @) p1 J
[- O; B6 G$ [' v! ]* s) r
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# L5 C' L) v8 Z  A[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# s. P* f; j/ d
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  V. D7 F( T  D+ i& M, O9 a]
- J! p, f: H' Z) ~* \& M4 u]
9 a& K  g# W4 |( F0 l; e: O3 Dset global-proportion note  i% ]$ V+ k" r; |
]
$ ?8 a& S* c- Q# _7 Aend
/ [$ U- }6 P) _0 {3 u( e- S6 r0 V- z5 e8 S" V) j" B
to do-trade5 U; R/ v  r! _5 ]
;;
这个过程实际上是给双方作出评价的过程
" v, U2 ^- o% ~3 W. x' Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: _+ @. t& W1 `8 O* \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 w* i% U* [: x8 T. y+ d
set trade-record-current lput(timer) trade-record-current' A) h2 D$ M5 g; |9 j
;;
评价时间
6 q( n; x" n" Oask myself [
! R) }! x, ]1 y8 x2 n9 w4 `update-local-reputation
2 d5 N3 z, E$ e7 oset trade-record-current lput([local-reputation] of myself) trade-record-current8 ]1 b' k0 h2 e9 ^+ O
]0 Z6 [8 H1 m) r2 x6 Z2 ?2 _- H
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; b& `( |9 b/ v( W' }
;;
将此次交易的记录加入到trade-record-one
$ b9 J' e, J* u# ~& ?) F+ m8 fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) M# B8 [" T3 z( ~( x% t2 \" U4 d* tlet note (item 2 trade-record-current )4 X4 ~4 `; ^9 z: Q0 m# O9 `
set trade-record-current' L4 @/ F0 E# V& \+ u
(replace-item 2 trade-record-current (item 3 trade-record-current))

& b! S8 ]( U) m0 Y  O, o& wset trade-record-current" _2 N5 ]8 _! z7 Y/ d4 E' w  D! [
(replace-item 3 trade-record-current note)9 L. B1 W/ \2 w
! x: q( w9 \; k5 ?1 l8 W
# U1 \3 D- H3 s! ]
ask customer [. g, ?* m! Y6 l, ?
update-local-reputation; {: A4 R+ c+ G, _4 |
set trade-record-current, Z4 P: b; J6 g
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 m0 v, W$ }! \# u3 T8 t( c]% W" q* r$ B& b5 {0 n( K; z

! l% Q" {: K8 k
6 {1 O, F5 `( t0 v! M# ^% k5 w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" Q+ s- |) l9 B) u5 n
0 ~! `- r9 l+ T, j) E6 b' m
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), z& H& [3 h: i0 W/ e
;;
将此次交易的记录加入到customertrade-record-all
( n# P$ v, e2 `8 D  qend- g( w1 h5 Z* O9 \
( w( W+ M/ y& z( i
to update-local-reputation; Z; P8 m: ]0 b
set [trade-record-one-len] of myself length [trade-record-one] of myself
3 o2 ?7 W" u- s$ H0 M6 h
( \( E2 Y' [- H- [
; P. k. k- M9 A;;if [trade-record-one-len] of myself > 3

5 Y) b8 U' r$ |3 o/ q! k7 J; [update-neighbor-total  K/ y$ q& ^7 \4 G( F% r1 y% t
;;
更新邻居节点的数目,在此进行6 k& z! J1 S' {! j8 |  V# D
let i 3
9 W. c+ Q- k+ hlet sum-time 0
$ g! j% B( ]* P9 Q% u8 Z  Z" Xwhile[i < [trade-record-one-len] of myself]
# u  z6 J5 J3 w' `) W2 e[
. V0 V. Q% l: n; j/ Y" s0 kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 g) B( N9 O- ^; x8 O( C
set i
& d$ q& y' S* a( i + 1)

" y, y, f! Q8 e5 G4 b" b]
: M; W- G8 |: s2 [6 l; zlet j 3
/ `+ H. h4 B. N! n( ?let sum-money 05 S0 ?6 A$ l) _+ n7 O* b- d; r
while[j < [trade-record-one-len] of myself]7 P& X5 B9 d4 f4 b0 F7 t8 i4 x
[6 P- Y/ k; a' J( X
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)! h; v, G+ t( {) ]% q
set j
- r& `: t- u: X, A8 t* t; z( j + 1)

6 u# K$ Z! r1 f  S' X2 p1 X]0 o' F: m. W5 u0 u4 f* F
let k 3
3 b- {: D/ [! U* L- M6 }3 `2 F' glet power 06 |2 J+ _2 X& P8 N& V
let local 0: D, u7 u( s8 z' z& m( g
while [k <[trade-record-one-len] of myself]) z+ J9 V- {8 I) c; p
[
+ J/ a2 x( f, L  |- lset 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) 8 t. Q" ]( x: K7 z! z  C! Y  W) s
set k (k + 1); I  `7 v* c8 A2 j: T8 |; d. c
]% S6 o8 m( ^' i) a
set [local-reputation] of myself (local)$ \2 l- W: W* R: o( m
end% b: w+ P; m9 U& Z7 ]5 i: q6 _: f

& O! n2 g: j' b, Q1 t& a  dto update-neighbor-total
* {, H: e2 U0 i" P
/ r  v/ @) i, w" }' P( L! r2 pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 s/ }3 J& k9 C2 r4 b5 s5 ^  Z& }8 i

& l! M3 `& r- \' k

4 `- R, d8 y; s6 ~9 Iend
2 C6 n2 i+ \" f
' K! d# ?, V0 d6 Xto update-credibility-ijl 4 O8 x) o3 }1 c% L# F
9 z1 W* Z) {& k0 `+ m% R
;;
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。
4 l5 H; {# w  F* }let l 0( k( U$ R7 {0 I% p2 _
while[ l < people ]
8 j# ~1 E4 K! \- j+ N;;
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
, {* x. O% p! F( f5 l[7 a9 v* L. ~' A  }2 @2 o9 d  p
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 K+ o# }# d( t$ _4 m8 A7 oif (trade-record-one-j-l-len > 3)& i2 K3 w2 i, h# H
[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. I/ o( l% j6 \, w& E1 P! b
let i 3
  T8 o0 o8 w! L# ~2 n( o2 Wlet sum-time 0
2 L3 B. U7 ^$ _' z( {7 `$ b3 k1 J& Swhile[i < trade-record-one-len]! L* S7 g6 }; a- N! L
[; Z- P. z. Y2 [* G9 A$ k- I& v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ x6 [9 z# |6 S6 {; V: ?6 z
set i
- o; \2 u" E  b! M- A' R, h: f2 C( i + 1)
. ^/ F. i" c- w# m3 E
]
8 D7 H& n  Y' X! Qlet credibility-i-j-l 0# E! Z5 V9 M2 J8 o4 D4 y, c3 n: b
;;i
评价(jjl的评价)
' F$ p+ a3 k" V$ I7 ?let j 3
2 \# m0 y$ g9 Dlet k 4
; L& l2 k1 v; U7 c/ @# |while[j < trade-record-one-len]) h5 n6 z% d- K/ {! g
[
* \1 h( W; ?  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& F4 _1 O+ V* @/ H
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)
; u" Q/ q9 l+ C# H" q4 |5 l, v  _set j  }6 P/ ^( Y3 L" q: x" u: v/ ?
( j + 1)
8 e; A& d' W) Q& E$ U
]' ^6 O% i: h" g1 c
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 )). J  t4 M. t2 I
4 C4 @% e3 ?3 J3 S" ]* i5 d

$ f6 \0 d2 i) C% u0 [) Z6 _% A8 e1 hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ E7 c$ `! e8 I9 a;;
及时更新il的评价质量的评价
1 R) _: M+ Z1 A4 Oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& p  q  `% b& {- tset l (l + 1)
' B4 @2 k7 i0 R) C]
, t& \; U; Y3 D/ mend$ N# t- |" X3 B+ G

; J( t2 O: T) Hto update-credibility-list
, i& l! f* k1 A6 s, Plet i 0
3 ?8 @& h* X2 Y# \. E3 Y6 Mwhile[i < people]& u$ S0 m/ G% t
[
' t: i0 U) u* U' slet j 0
' t; C, {, a* p: Y$ Nlet note 0* [9 I- Y, J" T8 N! ^$ ~6 R# L
let k 08 v+ P0 t# m% e  z
;;
计作出过评价的邻居节点的数目! r" n: B" M, g- V
while[j < people]7 g& f2 C+ Z& G2 N9 }! x
[
* L! Q2 E2 U, I1 U! Dif (item j( [credibility] of turtle (i + 1)) != -1)$ V4 N# X) ]% b) k2 h+ n# B
;;
判断是否给本turtle的评价质量做出过评价的节点9 X8 o* z  @! ]7 b" F+ c  |
[set note (note + item j ([credibility]of turtle (i + 1)))
, t8 C' \& R# W( C; C* E; c1 _;;*(exp (-(people - 2)))/(people - 2))]

6 ^2 O1 k( e: ^1 W' D: ]" |/ @4 @set k (k + 1)" ^( u& |: z( O7 |) c4 B: f
]4 T+ N8 E- q* r* I' n8 p2 D
set j (j + 1)
" T& ^# M1 w% ~$ K- f* Z]* j' f' q& L3 ?  z
set note (note *(exp (- (1 / k)))/ k)
% w  Y( Y! [4 Iset credibility-list (replace-item i credibility-list note)
. E6 N; Q8 |. B/ |- Wset i (i + 1)
# w" Y( o" `! m  B6 V! b  ^2 \]" B  a5 ^/ f- F% r) L
end+ B) O6 ]. I  Z7 z6 q

4 v7 ]; O, M, f+ Cto update-global-reputation-list
6 n% P3 {8 Y- g7 \4 Z9 G6 vlet j 0
  v2 b. o% z' Lwhile[j < people]
4 C$ k; a/ x9 t$ b" q( h[
% }4 d1 u8 O& V% A' l) W& r8 Plet new 0
1 N6 Y/ k. z& r" m. a;;
暂存新的一个全局声誉
% O/ N) t# m; ^6 ~  |3 ~, B% H9 X' C$ hlet i 04 [8 R; R7 s9 Q
let sum-money 09 o' Y9 G% v' O: Q; j3 Y- u
let credibility-money 0: O0 D6 ?: O5 D* b
while [i < people]
. O2 p% M) f* w( W[
" G* s2 ~" C( E5 x+ i* R8 @- X' ?set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- |/ S( {6 Z, j3 Zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: y& _8 o' I4 _# `1 Jset i (i + 1)
+ {5 g! F; }: y. y  ~2 j: t" a]
- @5 Y; i6 D  V2 [* V1 L! w' @: \let k 0+ Z2 E! S/ {$ v' C# S. K/ k1 i. R* \
let new1 0
5 y' {* L! `5 U* Z8 u! T* ?6 x$ t" z  Dwhile [k < people]' }# x& i; m4 q% I
[
- E8 C5 _' T( t" Y8 F" b# hset 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)
# d! P% a# K6 t7 J, Mset k (k + 1): `* Z. k: K- D3 f4 e! t+ d- O
]! b7 v7 Q! [( u9 _7 t
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 \# }. X: y" L1 G9 R4 b" Y: d4 [8 c8 Tset global-reputation-list (replace-item j global-reputation-list new)
% T& Q$ v+ ?+ Y- _" aset j (j + 1)! l. O& D) y- _6 u
]
+ E' i& u8 ^% y0 z/ m9 Bend) X, }4 {( E: ]0 e6 [# I3 C
9 z3 S( c! S# }

$ k8 N! W2 G* E( P+ n- V/ q+ s6 k# x6 z/ r1 c; L6 X
to get-color
7 i  H9 E- D4 N) T! J0 S* V' c$ H9 c
set color blue

+ c  ~2 u9 F0 ?; u2 M" n0 G* y( {end
( t4 u- Y8 O9 V/ m% v
& `1 @/ s1 b5 V3 ^* f9 oto poll-class3 T8 E% ~0 C+ V# }  {6 M; Y
end
0 D/ N; W5 z: g7 d8 A
* F/ c- m, o! m: p, h2 }( Rto setup-plot1
6 M, W" {# m% F2 _3 Z$ B- A  i' h
# p/ F+ b1 R( J3 P5 R( f: tset-current-plot "Trends-of-Local-reputation"
$ a( ~! U5 W2 b/ P5 u

: G. H+ f9 b" U8 v1 ]set-plot-x-range 0 xmax

, o  w6 Z( s- |: k3 [" ?: S' z; x5 F4 X/ _
set-plot-y-range 0.0 ymax
5 B( W9 s* W1 M- O8 H/ ^/ F& D
end
) z5 B7 q" t4 |/ [! Q
7 h- K0 P; B1 Q) [! `to setup-plot2
* d& @6 n, i! j/ V* l# l' _  U# W# C( j: e0 r7 J* p, _
set-current-plot "Trends-of-global-reputation"
( J4 l- K: O. d  Y3 t
4 ]& v, p# C$ i3 @# ?! e0 a$ e
set-plot-x-range 0 xmax
) ]8 Q+ R0 b+ I) M
% z& s& V, H; l! V
set-plot-y-range 0.0 ymax
: X; c  c: p1 s6 v# N' T
end
. _" j( L" `" s/ ]; k- H* S7 ?  T' I' X% V9 k- H1 q- {
to setup-plot3
  }+ U( R" x6 I; d( K  e
2 b- d8 K2 M7 r: i9 Zset-current-plot "Trends-of-credibility"
8 ?# e; M8 Q) K5 w1 ?" B; a

1 f3 v" S; m- n" h8 Dset-plot-x-range 0 xmax

- x% B& \8 f6 u+ w$ c4 k0 n' l1 ?" |# x0 O4 Z& J
set-plot-y-range 0.0 ymax
2 T9 k1 d  J& |  Z
end
0 f7 X+ Q0 ?+ j2 C# \3 [1 v* W. S
: E& ^- O1 G$ P+ J. v% tto do-plots
) h9 c5 g) h" k. b  j$ Kset-current-plot "Trends-of-Local-reputation"& _' O" G$ g# h4 T
set-current-plot-pen "Honest service"* N5 N3 C1 V8 _, y7 }1 k
end% @+ E5 V3 f( ?8 Q8 t3 I
+ z* ?: n  P! M3 a* o0 w
[ 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.: _1 m1 C& }, j, |3 K% c5 o

. w6 @- t! c4 g( F  c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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