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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:
$ T8 h) t5 r+ W, L! u5 e" Z! S; lto do-business
' u6 I' f0 r) s% ?6 J, `6 b8 i+ d" y rt random 360" T( P  y0 J# K7 |
fd 1
5 P3 q/ i6 m2 T; @, U# l( _ ifelse(other turtles-here != nobody)[
) K$ C6 I' k+ p   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! h5 L& s+ ^6 u' l% }$ Z8 s
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 e6 L; Q/ a' ]& G3 Q1 x. ?
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 a3 C6 }# n  N1 e
   set [trade-record-one-len] of self length [trade-record-one] of self
+ U3 A) `6 {& K0 {5 w0 J. P   set trade-record-current( list (timer) (random money-upper-limit))  S" x; w6 H' b9 ^" p* ]
* k) b0 k! D" K3 J9 r1 @" w+ i
问题的提示如下:, i' b. j/ [8 A8 R  V
  e* C; x( Q7 f; r; p
error while turtle 50 running OF in procedure DO-BUSINESS% z; r7 Q/ c2 }& d- d+ {
  called by procedure GO
9 s7 Q( u# i% ]) FOF expected input to be a turtle agentset or turtle but got NOBODY instead.' \  h3 }) M- @( M
(halted running of go)
: H+ ]; i: R$ D  o# H4 O4 d0 J- U9 L: u6 U4 A, U) y* f
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~~
3 {8 J; Y6 R, M& r, N' Z, c4 g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- P2 R7 b, q; o3 W5 r3 O
globals[
: l# c: ^) u2 ixmax
) @* d0 Q4 i& _% h2 yymax
  d% }) L% k& R+ v* i8 Kglobal-reputation-list+ a1 w, _* J, T* I; i
( U$ {$ T5 \  u, t- Q. o0 E
;;
每一个turtle的全局声誉都存在此LIST
# a+ O% k9 y- s1 ocredibility-list
. A& E* N( [# L$ {2 o. J;;
每一个turtle的评价可信度* ]6 p! g0 Q7 ?+ U2 n) O# Q& q+ d
honest-service
& Y4 e* Z$ W$ z/ ]unhonest-service
# y/ S3 n% X  r% C9 W& I0 Moscillation7 t8 z' `1 S8 d
rand-dynamic
( e& s5 Y5 ^1 u5 {7 B7 ~+ Y]
6 s9 c5 C( P2 g1 T' V$ y5 }" B: f4 h5 \8 z+ P) J, G5 u/ p
turtles-own[
& {% M1 S; x/ |: ~2 S( q1 k$ ztrade-record-all  v- t* X: d4 G3 E
;;a list of lists,
trade-record-one组成* c% x2 _0 q0 C" X0 |5 H: I
trade-record-one9 _- r$ G" I3 ?7 j* |# ?
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 d( o; o  ~5 k! l

% y& @( C1 C) e1 B;;[
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 S6 [, h% C4 P* `
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]1 B# X+ s5 Z& _) e, H* g
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, e, `  {( Z- V  T+ T2 g7 I/ p
neighbor-total4 @( e& [0 R, _6 ], _
;;
记录该turtle的邻居节点的数目
$ P: x: w" s' Z4 L! \) L  _. e* Ptrade-time
' x; a( z' a3 J6 a: d# V;;
当前发生交易的turtle的交易时间" q% Z" h: H. E* P& i5 E3 _
appraise-give" r" v; @* V1 U) f& Q+ G' n
;;
当前发生交易时给出的评价
. I' l7 I8 @& y! \$ L0 gappraise-receive
; p8 [: U/ b) j. V;;
当前发生交易时收到的评价
' ?9 L9 |6 O8 iappraise-time0 S3 R5 {+ a2 A7 F) [: H' F
;;
当前发生交易时的评价时间, t2 y9 j0 C) R' h0 m1 \( r. K
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
' S/ x1 a& J+ N% j: t7 u' C8 N9 h9 mtrade-times-total' J. x  Z- ~) f0 q; ?
;;
与当前turtle的交易总次数
* K" @& s- Y/ A, N& b# F8 P. ^trade-money-total
$ Y/ J5 F  m% C, |& \7 }0 {& u; j;;
与当前turtle的交易总金额
$ U3 ]2 \& r% b( Q* g$ Qlocal-reputation0 ~& ?* J; x: F1 z# B. B2 {9 h
global-reputation
4 A; i; ^9 z8 z# I! E2 W" hcredibility3 X2 O$ k6 i+ {
;;
评价可信度,每次交易后都需要更新% H# ?* B, N1 C5 u0 I9 T% V
credibility-all! n& E8 D% U) W; I0 Q' ]+ ]* h4 }& X
;;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, X& G2 R0 h! A) S
/ Y0 `6 k: a# |2 Q. b' Z- x3 u
;;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* `5 G* o' t% z: K0 h
credibility-one: v+ E( C$ W, Y
;;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people4 P+ A7 p/ }5 ~8 V
global-proportion
8 ^! B3 W6 G& m& Hcustomer5 {+ x/ h0 I8 V* F* Q
customer-no6 p6 R: D6 C7 V( R2 q
trust-ok
: E3 x; j+ N& p1 T: }( j- wtrade-record-one-len;;trade-record-one的长度; |; {- z/ D5 Z0 \& \* y0 R& F
]0 a: p; |' ~! n5 [) u9 _1 C
3 r, I$ {0 \2 I5 |6 K' q, e
;;setup procedure
# s6 S$ d) b9 u% y( {9 F% ~: s5 ^. x) V# \4 D8 A7 ]# X2 h
to setup% L! x/ C" [( P
- U0 R* F; g5 b" V
ca

- a! p2 h( C" o" [) K( |! y7 v+ ]& v1 f+ x; Y' r7 |, A$ V
initialize-settings
# F7 l. X" @1 ~, V" {- O' `* f, y

! _, y% o, M: J  ~5 s- Xcrt people [setup-turtles]
4 e8 e2 r/ c: _3 p
* v+ N3 h& @2 i( Q& P$ J, {+ H; B
reset-timer

2 h- W0 w/ g: r- b' A# k& i) D5 R! [  j
poll-class
0 k  Q5 [1 V% B; i$ c% V
3 M0 z0 d% e) Q1 c7 S' O5 O  a, l
setup-plots
' h+ u$ D* c; b$ y1 X9 \
1 Q. z% D- s% R  b3 k
do-plots
) g- H+ `0 M' R3 J
end
& t  e9 ?* p! W% e; ~8 B  ?  X* ]$ U3 h, s" }7 _
to initialize-settings! I, k' Y/ X* [3 a- k
+ J& p! y3 ~/ i6 S# e2 ]) }5 X  D
set global-reputation-list []

: Z" a# b8 w! F( v( d3 D6 r, g/ r# U( G1 Y4 k3 f2 L# p
set credibility-list n-values people [0.5]
6 D8 l. e  j# b) G$ R. [4 f* X% |
8 U. @* i! T: I* G" y( @% s
set honest-service 0

' O5 s0 ]# m3 F. n" f: }. i, S( \5 `
$ [+ x6 V1 Y1 m. Mset unhonest-service 0
. y/ X1 I4 @4 r7 n3 {
5 [- J' y- {1 S% s% P" Q; `
set oscillation 0
) ?% @4 }/ G. L  w3 F0 x- q# y4 b

3 E1 Z: v( `6 Cset rand-dynamic 0

8 D$ M3 X: b$ T5 v9 D- Pend
- U/ S: f5 Y$ H2 ]9 y' k! u4 E# z5 r& U1 M3 U& O& B
to setup-turtles ; }* G1 H- {9 q* i* Y
set shape "person"5 F% N9 L% C$ z' \* M  L. ]
setxy random-xcor random-ycor
; H; a8 h3 n& |% i9 h- `set trade-record-one []
2 ?2 W2 G0 y. ]% D
/ u7 E8 `+ B: |6 [
set trade-record-all n-values people [(list (? + 1) 0 0)]
# ~1 r, I4 G1 {1 t4 \. F+ p
; K* N/ }& s0 D; c% ?
set trade-record-current []% I5 }2 ^9 d) q7 M: h9 ?
set credibility-receive []! A2 O( ~3 t& [7 j: t
set local-reputation 0.5
* l% c) Q6 l+ n& Uset neighbor-total 0
9 o- L1 I2 Y/ o% V( mset trade-times-total 0
- ?6 v4 v0 a% w2 J; V( Q- nset trade-money-total 0
5 o4 u7 d! e4 \6 {8 _set customer nobody
; ~! r8 r6 ?& Q( gset credibility-all n-values people [creat-credibility]* y$ X7 _" c* l$ K
set credibility n-values people [-1]9 e3 b( s% J, y* f& i* \
get-color
; m# D! n2 z5 b3 L6 S
# n( D7 w$ E, C; ^4 {
end
5 X* p" [- N; ]; C% z( S! H) Q8 H
to-report creat-credibility: F. z) s; e; g7 n2 C- ]4 h7 _
report n-values people [0.5]
1 P0 O% H) ]6 g$ {  D3 ~) T) _end
1 o) G0 \! B& ^$ {% T' U
4 Y: B! s1 }0 q3 E+ _0 Z; Zto setup-plots4 R" J; {) e2 e
" X/ u% F/ v9 t6 J+ V+ R' R
set xmax 30
4 Q8 k* d# g5 V& H6 |. J- c

6 r, a" u3 w/ m7 z/ }3 w$ Tset ymax 1.0

! T) q! z$ d7 y) H0 g5 c/ |
5 M' I/ q2 M# u7 ~* Lclear-all-plots

& R+ F" {7 R" w# v8 ^, @" d0 z; y
setup-plot1
# r3 G2 ^' l& m3 W; M
  o& [7 l# ?6 `
setup-plot2
4 \( o9 z; y1 }* b

) n1 b* ^: e( F, Y' a# O8 ksetup-plot3
: g! H* G5 w4 H5 n+ S$ J
end* }% E* y8 `) \; R( q

3 k+ f, X2 u2 `& ~$ K- X2 R;;run time procedures
+ z2 S/ T. q( ^
( P/ L, O. g! Y; f7 v5 dto go
; N* O/ }& s$ ]( o: A9 U6 l9 M" c; w
ask turtles [do-business]
& \! @  S9 G& m) ?! N2 F7 |
end
$ q3 N) `0 F4 L. ^: {  X7 m. d. X$ f8 i: N, A/ \. z
to do-business
9 k6 m9 S3 J' S# Y
1 `9 ^/ [9 G& y
9 m3 b- c' `9 }+ F. b! W. i) B
rt random 360
1 K" g5 p7 Y9 |. X2 y" P

/ g; W/ U/ [3 C4 ]  y. M& hfd 1
& D: |! I: @7 I) Z: x
4 N2 x8 |0 \. ^5 N" _
ifelse(other turtles-here != nobody)[

, P* y1 z% S5 r" x% K3 U; L2 A8 h$ B9 ^
set customer one-of other turtles-here

- ^! G5 O5 x* V7 I1 I
6 b1 J: R1 W% Z, N' y' p( v3 n;; set [customer] of customer myself

$ a* n" f0 \+ G5 l. R
1 _1 K. o% q! S( |set [trade-record-one] of self item (([who] of customer) - 1)
( h2 A0 y+ U  _- V6 Q[trade-record-all]of self
" i% j6 j8 L% S2 P; g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 |6 ]" a7 H6 `( q

1 R' C, C1 b' ?set [trade-record-one] of customer item (([who] of self) - 1)
* w! g. A: ]! L& a- E2 z5 d[trade-record-all]of customer
; ?9 `* R4 O: q* U
7 H9 L+ N2 N  r% ^8 P+ }, i7 S* c
set [trade-record-one-len] of self length [trade-record-one] of self

5 j& [$ Q. `( o# n; m: {, X+ ]
set trade-record-current( list (timer) (random money-upper-limit))
' O2 R( \  r$ e. Q) Y- P7 T- _

5 D: a3 `2 ^& G0 Kask self [do-trust]0 Z# Z8 H3 I. x
;;
先求ij的信任度9 B( W$ N5 R0 V- ^/ Y& u. P
6 Y( F! k0 E0 D2 A) ?4 a1 E
if ([trust-ok] of self)
$ P/ R. [9 m$ `! x+ F/ p2 ^8 X1 J;;
根据ij的信任度来决定是否与j进行交易[5 L5 t) t: E9 }* T! b, a% |' T
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 T. _$ x& N% c9 u+ y) D# }, l- D4 L8 U4 ]4 L3 F+ `* n5 ^8 n% f# A
[

- ~1 `% l- u7 _, ~: b# p( P( L6 _' B5 v& l' ^, c4 w
do-trade
( g8 W+ G1 U+ r: o2 Y

6 |: C$ J& s! l+ N$ m3 N' q- Lupdate-credibility-ijl

1 @2 ?, y. p4 O( {. D) ]- A! G& ]2 @. K( n/ o6 q- S
update-credibility-list
. v1 L1 q, Q* `6 w/ Y- W* c* y

2 Z, [# `0 Q+ E' M3 Y+ h( h6 z
- b4 M: Y  ~/ p( V1 G1 M0 Uupdate-global-reputation-list

1 ?) R6 R* ^9 W0 {8 b
1 j7 y8 B; b$ N0 \7 Zpoll-class

: n% Z, L3 F, O( `9 Y
6 C3 B2 W- Z9 u: aget-color
* i; b# C, k4 X4 t9 k9 Z. u8 T1 v$ _  L

5 R& y2 K& h8 ]6 z9 A]]' O, \& e9 ]. W( \

5 m7 P4 x4 O" @;;
如果所得的信任度满足条件,则进行交易! l: a0 {% I5 {; P" C

& y$ e7 h; E2 s6 S* h2 }[
0 E# S0 H! W3 k7 U
- ?+ D7 J! i8 E  u1 A' q( V1 J
rt random 360
+ U1 f$ O" X! B! X2 [
: q$ i( M' c2 Z; l3 X0 k4 R1 u
fd 1

, ?% J$ A3 G8 @! V6 \1 q
+ _) `5 ]# w! B]

( Q3 ~* i& ^0 T3 k1 N2 m
5 |6 N. N# ~8 Aend

4 ?5 ?0 {  R0 E* Z( ?* U
2 V3 ~" R* ~  |' y+ M8 g3 @to do-trust 7 W- S) a+ k* M# I- N. w
set trust-ok False; J/ d! E0 U& {4 s1 A- ~/ h

6 j0 d7 f  t$ L& z

1 a9 B4 |0 V; i9 N- E+ M3 Xlet max-trade-times 0" |4 t+ _! E& m2 V5 y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 w0 R: U! c! j& u1 \let max-trade-money 0" h2 }  H- K4 `, J; L  ^; l
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! [9 u7 g! p0 M1 \+ d; `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( D6 D9 @: G+ I" |8 C( ]) q) C* F
( E% h+ _, g6 l
get-global-proportion
; q* y) E8 ]1 C7 T) A  ~  Jlet trust-value* i# m  c# I# {- J
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)

1 D; S- m: P* @* O7 k& Y4 xif(trust-value > trade-trust-value)! r/ ?2 P7 S: Y8 m3 t
[set trust-ok true]+ Q/ s8 o+ E3 `% B9 E
end
+ u3 \) _5 b7 {5 p" q
. {( r: ^; Y3 ]) vto get-global-proportion& [" S8 J. w% F* O# ?
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 C4 W( ^% i, V. ~) r2 @[set global-proportion 0]
* V: H' O% n# R) O- O- p, p[let i 0
3 Q, _: _4 `/ x+ q" x- v/ J* |let sum-money 0( v% k  v6 t) W0 J- L- n- I. ~7 y
while[ i < people]
# x% o8 F9 s7 A* R5 L[+ _0 [. j( u( G, e2 b
if( length (item i0 M4 \  E2 }& Y- I1 {* c9 M
[trade-record-all] of customer) > 3 )

$ G  T' A4 g7 J0 k9 A+ K[
9 J; b' V( v# S/ i8 t! _4 P2 j: v5 X- y* fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))  o! h8 H3 b; u- c4 _1 c1 U: O* J
]( r/ w. Z! o/ @% h
]- y* f, D4 W4 }6 f7 g
let j 0
) i( g4 h+ h2 P; h( ^let note 0- i! u$ A. K7 a# y9 K/ u9 {* `5 U
while[ j < people]
3 X; |6 A- z5 s# `; \1 ~/ Z! p& i[' b. c' Y) h7 d1 X" Y6 D, ?5 A% ]
if( length (item i, i; l1 {- ^% O# U- z
[trade-record-all] of customer) > 3 )
# p' }2 m7 f' P+ N
[
1 [! w2 B0 d" F% sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 D# \" y$ B; n/ V) }' Y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], d" a9 `* W/ W, l* {
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 Z2 \% [+ e5 A
]- @+ c* }4 p" f7 h" H% E& c
]
0 Y3 s$ u8 j4 {set global-proportion note: G, y' R. `- `( \
]" `) W1 n* S; e# n$ ^  }
end
& q5 g9 Z$ ]# O2 e, o( H
& U  q% Z, J1 e) D' U- O7 ~to do-trade5 V% C' M' s; S0 t' {  N
;;
这个过程实际上是给双方作出评价的过程
9 K& Z# k& C  Y$ }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% R  a" o, w3 a7 }& J, \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 ^, K6 d, @, ~, z/ g
set trade-record-current lput(timer) trade-record-current
& Z/ z/ V+ @2 F1 a: o& D;;
评价时间9 O' e& Y0 z$ M; j
ask myself [
- T9 C. W4 x2 J1 oupdate-local-reputation* C7 Y6 c6 `' U" T: C; v  p& b+ F/ k
set trade-record-current lput([local-reputation] of myself) trade-record-current
; {5 B, f+ l/ Z, ^: c' F]* ^- L6 _6 l' C5 L1 u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- K- f* [6 M: V5 U% n4 e;;
将此次交易的记录加入到trade-record-one
6 i# F: `( V, r* y7 k! O, Mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. [; X4 R& Q: Dlet note (item 2 trade-record-current )+ _" g% T; t0 Z1 V! J1 m! @# D
set trade-record-current$ ]4 @1 O& z' C* N3 M; u/ q* o* J
(replace-item 2 trade-record-current (item 3 trade-record-current))
# k/ i( s; q& O, {
set trade-record-current+ i( m& }/ K5 E
(replace-item 3 trade-record-current note), o6 ~+ ^' ]  Y& ^. l
  c' \, [2 S; Q1 @8 ^; E! o' G
1 i& `# G: b! H0 {- G7 U. d# y  \2 V
ask customer [) e9 X" h& G. H# y+ E
update-local-reputation
7 v) Y, o; `! \3 t, |  s- yset trade-record-current
' o, l5 J4 v8 Z4 G2 j- s(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' h5 r7 s4 f5 @2 G8 {7 M( ^" ]# d; e% \
]
) I( @+ X6 J. V; a
6 ]/ g6 A, ?7 H$ _: x: N
- M1 y# `* {- u9 s
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer6 P) ]+ G6 j0 _$ D/ r
! ^& P, a9 A) K1 \: F6 E
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& P0 v# }" F$ o; U! V  E;;
将此次交易的记录加入到customertrade-record-all
  N' M3 M( x/ D5 E: l. K5 Zend
4 o, T' F( q4 ~1 l$ d5 P$ p! A
: q# h" ]: e  A5 ^to update-local-reputation  ]2 K6 y9 U8 i  y4 k
set [trade-record-one-len] of myself length [trade-record-one] of myself! U- i6 t- {! z# d: \1 _* p4 d
! g' J6 n; k# T3 e$ o8 C
$ i5 J0 Z( _8 `3 s
;;if [trade-record-one-len] of myself > 3

$ G  t) N* m& s& f' J1 I$ j5 P1 [1 Uupdate-neighbor-total/ ~2 C1 b( u  p* ^
;;
更新邻居节点的数目,在此进行9 C/ q& i0 ~% g
let i 3
% g3 p% Z/ _( |' Y" ylet sum-time 0
* Q" @* P$ Q) ]8 X8 p9 m5 o' ]* iwhile[i < [trade-record-one-len] of myself]
/ ]+ e2 a1 X$ W& F2 j% B[8 [" v# o" H5 F, `
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 C" }. T  O1 {7 c0 `
set i
$ _& L) f  |  h! E( k( i + 1)

4 n9 ?! y- I, ]]
2 {) A4 e' e" l/ a, t' b# n% mlet j 3' r; p- u9 t# d8 a% r0 n9 f. U8 h% I
let sum-money 0; K- U# h9 g/ [' I
while[j < [trade-record-one-len] of myself]
6 w: v( R* X" V( i& Y6 y- y[
) t8 L/ G( ?8 C  t$ jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)6 M4 N$ `: A- a$ U6 q0 V
set j
% Q* Z8 x3 Z7 \* f$ _( j + 1)
  O' c& ~' v+ S/ @
]
( j: O2 \9 o% Y7 Q8 s0 ^let k 3
  g0 O5 V; D3 o) p# Y' w8 X7 klet power 0& e* S+ Y  w- z& e
let local 0
7 n. c/ f* ^. S, C/ zwhile [k <[trade-record-one-len] of myself]
" X# ~0 g6 v2 N8 g7 [[( ]( G  I2 l& v4 J
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)
9 Z# q: F1 {3 _; t/ yset k (k + 1)
0 v! \% H8 ]$ \: }4 @]1 f- A% A2 {' v
set [local-reputation] of myself (local)
  P" E- s8 C. K  ^end
; ?# L+ u' A8 @# o* ]8 ~6 p* |
6 G0 S, W  q/ j* h3 S) _0 Kto update-neighbor-total
- q# b+ _' p. V
$ P& J5 r' x2 k# R, \0 X6 Qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! L- p& k, r( a# s

; S# g0 W- S) G$ T: A) w0 M
$ y* W" N; m* o( m) P6 r2 R% `% J
end- D( b8 ]4 ]$ e4 \& p6 n
0 t# D4 ]) v  b1 m9 m; j6 r
to update-credibility-ijl + D  Q0 b- z1 S' r
" y# t! `% p& v; y; A: R1 t- b. G' ]
;;
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。' h1 L+ ^9 K2 I2 a; W8 J3 @- e& z
let l 0
- Y0 L; l! y7 A+ m$ O" Zwhile[ l < people ]
* D! B9 N# v& ^3 G$ X;;
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' D: M% S" G& ~1 d' ?
[) ^& S3 o+ M% F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 n/ X) D+ b' s6 n# q; n7 ^1 h2 ^; @5 G
if (trade-record-one-j-l-len > 3)
7 S9 _/ ^. K4 U6 m[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, d' F  w0 P4 Z8 O& j' R+ k6 b
let i 3
. d7 T6 R1 n0 X1 V7 C$ \6 G* Ylet sum-time 02 T6 s; k7 L7 \1 M0 i
while[i < trade-record-one-len]
5 t( Z1 h6 R' \0 L# _2 a$ i: d[. B" M: M. k1 w5 _2 T6 g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ p7 j0 n% T$ R1 G; u! v( _set i
4 F" |) }/ |9 d( i + 1)

  Z  R9 V( N- W. l/ v  l# c]
. o6 D/ i5 f9 H$ c' t  ]- M- u. Klet credibility-i-j-l 0/ U4 h! D, E5 [) A) q( p: d- ~
;;i
评价(jjl的评价)
+ z* v3 ?3 F7 S& Tlet j 3% I' w' Q: O3 \6 ^& H
let k 4; F7 `, G. O+ K
while[j < trade-record-one-len]
6 ~( i& B* |' a! @. Z+ S- k. g[; {2 M, X. |- g; m5 v  J
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
: G. e" o) X- r1 {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)
1 p4 @; i/ Q( S( h) u1 u& `5 X' f/ E  uset j
- i6 `1 S% o5 i/ }) N( ]# ^5 u1 q( j + 1)
! D8 s/ a8 B* [3 L8 ?
]& j$ C- I2 \( u+ m
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 ))' ^( m' [# V# u* M: O

9 H% y8 L' w- I. }

# H, N6 j# Q2 }4 n# L& V. plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 A& n7 ?. n+ L$ y
;;
及时更新il的评价质量的评价
1 f) I" N( i3 Z7 k5 n, Vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 g) w' Y6 a; ~# w0 uset l (l + 1)4 ?' [1 T# v6 ]2 d2 N
]
- B! h3 s7 r' Q+ ~& O# p) Q5 A. tend" g9 j, m) ~/ e* l
6 _5 g6 W0 _3 h  B; C! t
to update-credibility-list
1 m5 ?) R/ U# ~/ R( S& \# D" ]let i 01 |/ V% P5 B: b7 G2 `3 z) o+ h
while[i < people]
6 b) h( \$ A* I& g1 Y9 A[% ]5 S* |9 h4 N+ \7 M7 M5 ^
let j 0- D3 f* N! p4 d5 h3 ?; c7 W! b
let note 0! n1 K9 |6 T( Y& B
let k 0
( H8 k& [2 ~0 ^; f;;
计作出过评价的邻居节点的数目
9 O3 V4 L" \) Swhile[j < people]5 W5 R% ~  J4 W2 B2 a- G
[
3 E. f2 M3 L2 Tif (item j( [credibility] of turtle (i + 1)) != -1)
  f! u5 o' x' t;;
判断是否给本turtle的评价质量做出过评价的节点! L9 C3 V: {: [  T& a! M" z$ F
[set note (note + item j ([credibility]of turtle (i + 1)))
- }6 B4 \8 _7 K4 W& G;;*(exp (-(people - 2)))/(people - 2))]

8 a4 E" \. n; W0 F4 ~" Vset k (k + 1)% B: _+ f6 O2 p9 t
]) Z# Y( f" Y" N6 d  Z$ b/ ?
set j (j + 1)% F) t2 i2 L% Q  K' y2 Y
]
0 i% L$ V6 d+ ]) |set note (note *(exp (- (1 / k)))/ k)0 p; j+ i( g& f3 z# l+ d2 J
set credibility-list (replace-item i credibility-list note)4 t6 u1 f( U; ^3 @& \. h5 @: p' F, g
set i (i + 1)2 p2 b% p) A6 Y) ^% L4 F
]4 c' w0 T  b2 U
end* Z3 j- O, X. d0 ~+ q
' H# c6 G, d2 N/ K3 ^9 G  l
to update-global-reputation-list
0 M/ @" |* C% s2 y+ o/ Slet j 0
6 Y1 U% a/ S, D, E% [' W/ `7 Uwhile[j < people]9 n3 D; R# m, L  u0 y* |
[6 z: E$ k6 U  Z9 \4 r
let new 0
! D7 v5 [9 B4 W& H;;
暂存新的一个全局声誉' c1 m. ]  g2 J8 T2 U' H- j
let i 0
! u' C6 T7 v2 ?0 p& E* v5 Klet sum-money 0
( S( R% c) w- [0 flet credibility-money 09 O# G# h- d( X2 Z( t! I8 [
while [i < people]/ Y" K2 o% n3 `$ I7 Y- H( e1 N! d
[# ?: l! e# p) Y0 ]; P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& V1 p; h( `" g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 h6 E6 a+ f! b( p& I7 u6 Zset i (i + 1)
* ]7 `. j, X, x- R4 n8 P]2 q# ~: \; t* T0 G% s5 i+ i4 J0 {
let k 0
& x0 K! j" y1 d: D( Z8 _let new1 0& o5 h3 U5 M0 W7 q' L* l9 |
while [k < people]
4 S2 m9 z0 ]2 q7 h/ \[5 W0 {4 Y( j2 t! T9 z/ e
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)* z6 `/ O1 @& @( T0 p0 r. r
set k (k + 1)
: ]- P# l! X0 w' q/ L0 L8 A# m6 r]9 I( R: ^! y( J3 X# Z/ ?2 _' P  D# b
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& v# [% A; W0 k9 `( L2 }! `. T4 Iset global-reputation-list (replace-item j global-reputation-list new)
, q3 H$ W% F% r) p$ aset j (j + 1)
0 H* d, I( O. E+ y5 T  ?# e  ~% S]2 b4 L0 K3 _! F' n* H
end1 j7 }) L( W4 b  r0 K: m) [1 [
0 x  q5 X* ~! t2 z4 r6 l" K
) j/ L% V3 i! z; M0 b2 V+ L
& z; r) U. m* F% [2 T; r
to get-color
3 v' J& M( y! m" k( [, t  \: E
. ?( N0 Y0 L# h0 H5 B% u) yset color blue
! F  |( _8 d& ]$ t4 r0 R. b8 u
end1 I3 @( R1 Y# D3 @9 {) O
, q% r% k# t8 h  E
to poll-class$ U. p6 H0 A* l0 h
end5 ~5 P" q, ^# O9 A: o
+ l6 F+ W) M9 z% M# l# X
to setup-plot1
! \* R' `# _8 B$ a- ?; e
$ C7 [. T( K% K; hset-current-plot "Trends-of-Local-reputation"
- _' b. I8 B& h" m: A" _0 E& k

, H+ R/ S" b" v7 Cset-plot-x-range 0 xmax

+ T1 A4 q! L2 o8 g# G; r) g+ F- Q6 t
set-plot-y-range 0.0 ymax

# x/ b. G. D8 n; t0 M/ O. B( n, `9 Bend9 I; K6 a4 S1 n7 c: Y. `8 X# u, Y

/ G% P) H; K  n) z: ?9 oto setup-plot2
& E9 }/ h+ L7 ?" c- |, C' }1 A
9 P2 P$ M  G9 Z; \set-current-plot "Trends-of-global-reputation"

9 O1 I% ]- b& T2 L. T7 Q- ?1 P! |6 Z! e  x* ?  j
set-plot-x-range 0 xmax
. c3 @! z* |3 B& a+ t9 E6 ?4 G

0 C5 F2 d7 y4 Z0 r1 Hset-plot-y-range 0.0 ymax

" u7 h3 u, j% c) P0 j. Eend
- z+ k( z, V* N  X3 W7 P
# ?# ?2 L$ P! ?to setup-plot3$ u9 t- D) M( H% I8 @" u1 X

- b( J$ c& }5 |: y$ `7 \# Hset-current-plot "Trends-of-credibility"
0 E) a# k; v1 X" h( r7 Z8 Z0 B. |9 k

9 d2 K+ S7 r! l! Cset-plot-x-range 0 xmax

; i* e6 X9 g* R: b1 h% w
4 R1 a4 [; D: @$ x# Iset-plot-y-range 0.0 ymax

2 s! T# t6 K! E; Kend3 S1 P% A. b# [: n$ E
6 @( x& E5 u* ^9 V& p4 N
to do-plots' l. D; b& T( o
set-current-plot "Trends-of-Local-reputation"6 e* i! b& U) Y* z
set-current-plot-pen "Honest service"* T  B$ @  B' ?  E# s0 n: e
end
% N' i: @0 r$ X
# T$ c2 _' l1 U[ 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.
( L  x" C5 \, D3 L# ]) r. j9 z% p5 Z/ H/ N) X, q! L7 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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