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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 F3 ?" \/ b0 R: lto do-business ) X4 X9 l9 q- C' I! B& R3 W
rt random 3605 E- `2 p4 o% `) g8 v5 B8 p
fd 1
) p1 q$ t  E9 g/ h0 E0 Z5 v3 a ifelse(other turtles-here != nobody)[9 @* F* U: S" e/ f* ]9 k
   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.
2 u/ l# r; O+ W& p: ~   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      m" a7 O" m0 H% T0 e; L/ J4 D6 d2 M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ A  |0 L2 ]- A+ B& y   set [trade-record-one-len] of self length [trade-record-one] of self
2 w. e5 @; V9 Z   set trade-record-current( list (timer) (random money-upper-limit))
4 ^3 i; ?5 I0 o8 r; \& e6 i+ i5 u" F. W, X; R1 `' ^
问题的提示如下:
4 s3 p3 c5 i, ?$ s* m& o7 L7 X* V2 a# C6 q4 w& y
error while turtle 50 running OF in procedure DO-BUSINESS$ c& H7 a( X3 j  x
  called by procedure GO
- P/ z1 {  V: [" y% Z* E1 m8 \& JOF expected input to be a turtle agentset or turtle but got NOBODY instead.
" w4 T3 z4 f* |" W3 b. X8 W; u4 C
(halted running of go)+ t5 o- x& V* z6 X" b

7 i& Y3 z  T9 W) \. V6 }$ z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~~5 @; j& M. C& O# L9 s8 N: \
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: k) i2 M5 ?6 {; x) |$ k8 ?8 [1 U4 _
globals[
, F1 q' q* j) txmax/ @1 D) o2 {  @" a, Y6 a6 O
ymax
# I6 }. N! N( U  i; ~  s) Tglobal-reputation-list  u8 Z  A: I3 N$ w0 m) Z$ m9 [
7 K6 `( j' d, v0 \* t2 C6 y: [
;;
每一个turtle的全局声誉都存在此LIST
8 |, x$ r, j: tcredibility-list1 J9 N. M% C- w
;;
每一个turtle的评价可信度7 R: s# D$ W3 j0 y
honest-service
8 Q- C2 b# {5 b0 E6 e7 ]unhonest-service
" x8 u: I* s  B! Y/ H- y+ s% K1 Soscillation$ x2 }+ ~0 @4 I7 j1 d  }
rand-dynamic$ C, Q9 U3 Z! y' H  F) f* ~
]
4 U; b, a/ O, a, A# ]/ ?/ o9 q) P) j1 S6 I- E6 W" N
turtles-own[
2 @& R1 m4 X4 s2 E' N8 Mtrade-record-all
3 {+ E& T$ X% k$ C;;a list of lists,
trade-record-one组成5 M5 R- h* E  F$ [
trade-record-one+ F% o3 _! D) v0 a
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! U' A) z4 J. E( L; {% Y# r; D( B% K; X0 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]]
8 Y) C$ p; I& m+ h6 j! ftrade-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]# j7 u+ B% M2 m
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
8 ^3 W: U' H) l' S1 uneighbor-total
6 y5 o% B+ c3 [  D) V* r6 {0 X;;
记录该turtle的邻居节点的数目
# m0 b. r: }1 j/ I; qtrade-time/ U! N& P6 }9 T- Z( r
;;
当前发生交易的turtle的交易时间
) X6 N9 ~0 E, f- \$ vappraise-give
0 {* j+ t  W" u" o0 B& O3 i* i2 C! R;;
当前发生交易时给出的评价
( Z! v$ Q$ H1 Nappraise-receive
  b* M3 \  F3 B3 o& H' a;;
当前发生交易时收到的评价8 }% I! }. N6 x8 i, n0 k+ C! I% ~
appraise-time
# F! t6 M& R% R7 x. x1 M$ A& m% g;;
当前发生交易时的评价时间
3 Q( X# j$ @2 ?local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 F* M- W* C2 n3 d5 H8 b6 L# ~4 btrade-times-total
/ C9 A6 I& X1 Y- I  H" c$ l: Z- v; `;;
与当前turtle的交易总次数$ M5 h7 }5 a1 m% }0 X. `: P4 m
trade-money-total  S$ g6 L- a! G1 R+ ~& F* S
;;
与当前turtle的交易总金额
. z: q! C0 u+ {3 }/ G  ~local-reputation. G! z8 B+ Y' u0 k+ _% H, V
global-reputation
! h4 a* y0 `% L1 G- v! M+ m  K0 s  Dcredibility
0 O+ F9 \! R" l5 M;;
评价可信度,每次交易后都需要更新, v* J4 o9 E8 B9 ~9 ]: H! P
credibility-all3 H# m: t; M9 z; `' w
;;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
" X5 {' k% z! Z. X  A, k8 x" g& ~$ S$ _# r
;;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0.57 @0 a  t3 U9 m( I8 o
credibility-one
+ G" Z$ t  ?& ~, e;;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
  x8 t; M7 Z' z; b# s7 F" rglobal-proportion
0 r+ ?1 U8 s6 Y7 ~4 rcustomer- U1 s) ]$ W& P& d
customer-no
1 s! @' C1 F) U2 R6 V; itrust-ok/ d0 x% Z7 N7 }6 {) D4 e8 ^6 a" p
trade-record-one-len;;trade-record-one的长度" |5 G- m6 e+ x, y$ e' X& y
]
) w; U. w0 t! ~7 t
/ B. \) w$ U9 C- R) o/ e, ~; j) @;;setup procedure& t# r7 C. h# S

( S6 H0 d7 [1 b. r: g) Eto setup
2 ]1 q' d9 J  H5 P' k' B5 s* X( v  I% x$ {$ ^$ l
ca
# A) Q: ]8 y- W( t% |

! X3 c2 V+ T! Y0 W6 B& {! l% F7 cinitialize-settings
( z' ~/ F7 T* I( _6 l) |$ m

7 y* ^+ W" f5 x! Y$ @crt people [setup-turtles]

2 [6 C2 B$ `+ }& h, H9 M3 f+ Y. C4 W0 g: p  E/ ?  N/ i8 U' O8 Y
reset-timer

: [) u( S- v4 S4 f2 j- v1 K: Y, j! `) i3 U) M4 h* x( D
poll-class
8 y, u1 _& b, \; {! R$ P9 W
1 `+ E- V7 E) a: f+ d# ]9 l: `; R2 y
setup-plots

# j1 l, ]- j. m5 [+ _) y: K. {7 X$ C
do-plots
7 [  ?& _! R/ f: ?! o
end8 N  z' O1 T! y, l, w9 Y2 k; Y

8 @" i( \8 r  W& Vto initialize-settings
8 |. w) \0 o2 K' F
  s( |% ^& {& T: m. Rset global-reputation-list []
/ f8 m5 |( g$ t, K

, r' X' O* v/ w8 A& x" Yset credibility-list n-values people [0.5]

3 C+ j  N# u7 i( m4 L  O1 l3 r5 {4 ?+ F  Y9 u* N6 M
set honest-service 0

0 s5 }7 G$ F6 R( L3 z* ^5 j! r, s
set unhonest-service 0

$ U, O# [2 d9 O- R/ x( E
/ Q% x4 b' a. v; s+ xset oscillation 0
; L  e5 M3 @! E$ f

- W/ ~- d, |9 D8 V- U% cset rand-dynamic 0

+ F# M1 ^6 i  t! Zend  w: C6 e$ T& `! R" c

6 w4 A  L" D, v. lto setup-turtles
% H$ Z! K5 `# S$ N9 X+ w5 s  I: [* xset shape "person"' y& z. L7 r/ Q# l% c/ _/ E; l
setxy random-xcor random-ycor: i1 W5 [; ?0 @+ C8 m
set trade-record-one []' O# g# u/ M- A" T, I2 \

- ]5 W: L% ~( V) N' t) fset trade-record-all n-values people [(list (? + 1) 0 0)] 6 W3 Z+ J9 y4 _7 _" o- O8 e

& A2 U+ c8 c- E0 L8 }9 nset trade-record-current []
5 E9 ^; k' }- b( gset credibility-receive []" y% d' X% l8 f. m, d
set local-reputation 0.5
' P$ M; b, o/ I7 }8 ~2 nset neighbor-total 0
. D. w9 j2 J# b, Sset trade-times-total 00 Q( U$ A5 z. r& u
set trade-money-total 0
5 h& ]& L3 U$ b! ^6 y5 E2 k$ Y2 Uset customer nobody' Y8 B0 n& {0 l, B4 g, q$ b
set credibility-all n-values people [creat-credibility]7 I) x+ ]' w. C, {
set credibility n-values people [-1]
4 E9 x1 m$ t6 X2 U  u0 b( u7 @" Tget-color3 |9 v0 B" w9 }. w- @: m* Z
4 Y) i# g) ]1 `! {* `
end% v2 h1 M2 Q; Q) l* b2 H

3 L5 O+ I7 n) [3 hto-report creat-credibility
; m$ Y, i- R) R" |$ E: _report n-values people [0.5]4 o. l3 ~8 I+ R0 \4 n
end
+ m% D6 P# L4 b: Z2 [9 C2 f9 N, ]6 }/ a# t8 i: |' L- h$ |
to setup-plots& [+ X2 |6 b3 v! t) X8 f, R# m8 I
9 D2 Y1 u4 F' R$ V
set xmax 30
2 S6 e, C' C4 G% f& D1 I# v% S& e

  p' S3 t( R# c. Y1 I, D3 Uset ymax 1.0

/ I, P9 `( m7 X
& R4 o( f+ ^( h( Bclear-all-plots
5 n8 N; }' v/ p
8 S; W$ ]0 G( E7 g+ j
setup-plot1

% I6 m  m  I! f) ?+ F4 u5 _# t8 h7 O, [3 O
setup-plot2

8 E9 X2 w) ^( _0 i: \' Q' @- Z
setup-plot3
, q7 R$ q% B0 K' f! c
end
+ C+ u" C7 N  y7 n3 z
6 A; H' t$ F5 M8 a;;run time procedures
  Z! M) P$ K+ v  m! |3 Q7 a/ R% n$ _, I! D2 [6 J
to go
) Z6 a$ N% S( U* m6 X/ p+ e  r  g5 A% _- y# v8 r0 d1 P
ask turtles [do-business]

/ z6 Z$ r" ]8 A8 x( ^end
, {' i3 @+ z6 ]  M- e: f9 ~5 f& I4 U  C9 I1 S) d( q
to do-business 0 j5 J% s7 w* d" {
; X; v0 ?8 c, y; r+ }+ M( y
. h7 @1 w% ~) r: B6 T
rt random 360

4 S# [/ S7 ^. ^, P1 l1 `$ c' J3 f
fd 1
2 l  P7 Y# w  Q8 l5 Q
5 V' S* x, L8 [9 i; \* T2 d
ifelse(other turtles-here != nobody)[
! j/ ~" v2 x4 z; l# ^9 i# U
3 B$ j$ A. R( o
set customer one-of other turtles-here

. b2 [( o( D! I% M' B7 X  H) x6 T8 _" z
;; set [customer] of customer myself

( m. |3 }) `0 @1 V# ^9 A
% e$ u& b! Y; L: d# P( Hset [trade-record-one] of self item (([who] of customer) - 1)
6 T1 L7 x0 E, e. l* s4 Z5 s[trade-record-all]of self
, z4 f$ s2 V; |; v6 S0 D;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ c/ n: F# h8 {2 h: O7 S; U
% o$ c8 ~; r) z" }! V; |
set [trade-record-one] of customer item (([who] of self) - 1), R7 H- R, p6 ?3 z
[trade-record-all]of customer

$ u& |* W9 j8 V. q  c  N# o( i4 J
: J. s1 S" ?# E9 tset [trade-record-one-len] of self length [trade-record-one] of self
6 F* ?8 O7 B/ Z" F* s
) U- W& G3 a; ^* {9 k, _% R
set trade-record-current( list (timer) (random money-upper-limit))
3 g0 c" G: x! X7 J% V4 P

, m) y3 G5 x6 Kask self [do-trust]& d7 G* K; n3 M: M( ^
;;
先求ij的信任度
  m/ x( e2 B1 x0 ^( s% L) Z7 |# d3 a9 w1 E: w& b+ s1 k
if ([trust-ok] of self)( {. `6 ~1 h! l) r
;;
根据ij的信任度来决定是否与j进行交易[; {" U' ?) ]( t4 T, Z& m7 ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 Z# P) q2 R5 o, L4 z( _3 u6 b  d' |" z+ Q
[
7 y7 l) S: ^8 }: y2 F$ i
+ b: M0 p7 k3 i' x0 x' O
do-trade

: d  D. o% C$ g2 e0 {
+ o3 e5 u2 G! A8 r- v1 [9 Cupdate-credibility-ijl

$ ?6 W+ @( \7 g( _/ \
0 o& J  O5 \( a8 m' j' ]3 @update-credibility-list
' `& Q6 ^1 I" N, c2 j

1 T/ m: C1 ~3 C4 B! H1 [6 |! d+ }% \! ?4 g/ m4 P2 B+ a) {5 \
update-global-reputation-list
/ t: a+ N6 t: Q7 U1 `; v5 j

) E8 |& ~1 ^5 Q" J; r) ?, t; ~poll-class

  B7 l  W( w, t3 }7 q- Z
+ h5 c5 Q8 f; k+ ^5 Z7 u/ Pget-color
# u% _* A. S; n6 `# @/ M

: k0 L$ [6 I+ K) N/ r]]# @$ I3 S4 d9 P
+ z8 ^% ^* P9 I# ^, _/ E: I2 C9 i$ ^
;;
如果所得的信任度满足条件,则进行交易
: T) l& m. C& t' i0 J3 J& x; ^" j5 s
[

; K3 T. C" V- o1 H
8 P, {3 f) G3 I4 m  c$ Ort random 360
$ A' q; t8 z1 y# x; {5 `

6 v) D! R* g  x* i% }" U$ \fd 1
% `4 K7 z5 k9 v4 a5 q
6 t8 M( f7 m4 x$ l
]

2 _9 N9 Q0 L( R4 \! _5 g( y, M; \# ~; @9 `# u9 t
end
" ]; X* I2 g6 ^4 }! Y/ _8 v0 S

3 _# S5 E' L% c& q; w' x+ x! yto do-trust
1 [4 O$ N, ]# g3 `set trust-ok False$ U3 x2 z& @' @

/ x7 a% g3 [) B% A0 F+ ~' Z
8 }6 c" B7 L* _% {4 I1 Y
let max-trade-times 05 m: G6 m# a- I
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* |8 D7 L  o; ~" m- l; n% O0 r6 V
let max-trade-money 04 ]# b2 _  ~, ?* l7 \5 R, B* e
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ K; V+ E8 `5 s' m( P6 J
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) u3 U! b/ n3 x" \/ k

) U5 \0 l7 c3 P, T
/ h8 ~( l$ y5 r
get-global-proportion
/ t2 Z7 r  o4 n  Llet trust-value
/ b8 `% H* ^9 [2 Clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

& W+ X+ L3 c+ xif(trust-value > trade-trust-value)9 X$ v. H' s0 k
[set trust-ok true]. D. Q+ B  O) ?) P3 r' {% Z
end7 D0 A) j. w4 K' t5 w
  Q" e: C8 G% Q; V' i
to get-global-proportion7 V5 _: H! x: b. ^% X
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% E! s, |9 n5 e. ^1 n% K: F
[set global-proportion 0]
# i4 w8 q( z; m; m- o: O[let i 0" R9 U) V( X$ n3 L  p8 g+ ?
let sum-money 05 T3 P( q1 r/ @* l- D
while[ i < people]+ e0 E, e% {+ Y! |  R
[
/ R/ w  i5 M# X5 tif( length (item i* j0 ^: M" t: @( l! g
[trade-record-all] of customer) > 3 )
) G5 Q$ z7 e" O! K& p
[% S" v; }: F, v
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ g5 a6 T# F9 b* ?3 [! I0 c
]
/ {9 v) Z8 L% v& Q# I6 G]
6 ?' c9 B" z, E& T8 o9 I6 i) Nlet j 0
- O6 M8 ^' d" b3 m( @0 Olet note 0$ m3 f& X" y3 @+ i! P
while[ j < people]  Y2 E4 A+ O' j: \- I& o' b
[
3 B1 s( g' l2 d5 t9 _; h/ Mif( length (item i
+ [. o0 t* A  Y: d) T. d' f[trade-record-all] of customer) > 3 )

6 A9 i5 ^4 ~3 h[
6 X* j6 I, ]" H* l' M7 w6 W2 c0 Q& c+ nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  t7 J; X9 T& H* m
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 V- A0 z, h3 _# L: ]; l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; K8 n) E$ C' P, a2 r' v6 {
]( t- Z* `/ `' b0 c( d
]3 m& K- Q2 P5 ^
set global-proportion note
$ }! {/ S# H: G! a( O! W' [4 c) y/ C]
7 C4 O0 W1 T2 F7 e: r$ n) nend$ d, k0 w2 s3 P, O& Z: p

; M4 ^8 n, S5 m: ^% eto do-trade
, w3 i" M( g; H/ |  q;;
这个过程实际上是给双方作出评价的过程
  k" I4 F& \0 K+ e8 `0 xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. I6 E5 {! C% \/ [3 Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 ^* T/ Z8 {4 Y  r# ~1 w2 e
set trade-record-current lput(timer) trade-record-current8 t" B- {  h% M: u9 Z1 w
;;
评价时间1 X, P9 r* p! k
ask myself [1 f% U8 ?& {& f
update-local-reputation
' L+ m9 `' M! [& iset trade-record-current lput([local-reputation] of myself) trade-record-current! b% G9 |: ~- K8 s5 u$ k2 X
]
/ x* m, P, M& s2 ^; Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 n3 l  z/ t5 w;;
将此次交易的记录加入到trade-record-one
1 N- R4 _7 e* f# \, \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 v' C9 ]1 z! q7 slet note (item 2 trade-record-current ): Y3 w8 I) q# J
set trade-record-current+ x1 V: c! c2 h
(replace-item 2 trade-record-current (item 3 trade-record-current))

4 I2 Y; y2 I1 |' \set trade-record-current
, M0 a/ o9 x( N: Y( l- ^6 K. _3 b0 {(replace-item 3 trade-record-current note)
6 W* l9 Z  E5 T. z& m( q' ^, K
( U5 X) w/ Z  H! u

4 \9 Z' v. m$ h" A9 T/ Cask customer [5 Q6 R3 y% }9 m' u! _2 r
update-local-reputation
' Z2 b9 l2 w& J% K5 N- nset trade-record-current2 ]& F" t5 A2 f1 g' k' M3 a7 }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  a6 L4 T* a) H+ l! n]
+ v. j7 M' U" {, z7 j& Z+ O- I
" [3 f6 J. _( {- y0 Y
& f3 _& ^: y% Y7 Q( u2 S; _8 f
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 [9 ~2 X9 B$ t' c( X7 H9 t# B
4 K& C$ G9 ^+ [  e+ ]* T' O9 u. q- r
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ l. s% I8 s# X' Y4 \;;
将此次交易的记录加入到customertrade-record-all2 V. y6 S; D( _5 }
end; G1 H; U5 ?! o8 q# R6 l5 l' X
9 H& Q: H8 s- p3 E7 B. Y
to update-local-reputation
2 a5 _) {- ?' g2 X9 Y& nset [trade-record-one-len] of myself length [trade-record-one] of myself
8 H, x/ M4 G1 D# U- {
3 x0 `+ S! E$ y) J6 p4 ^! }! a3 ]2 \2 j& Y
;;if [trade-record-one-len] of myself > 3

( p7 i+ ?' Q, r% P7 U8 D5 supdate-neighbor-total* ?/ I3 o: V3 P' {0 P
;;
更新邻居节点的数目,在此进行+ {4 F: X9 R( J& V' C; o
let i 3
  ^/ }! @# F8 w  R% glet sum-time 0
. K! D) \8 ~" H& C6 M* wwhile[i < [trade-record-one-len] of myself]
4 @! W6 x0 Y% t2 U/ b+ ~[
9 y1 m! f: V9 V# w& R1 Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ p. }2 B% U+ n6 q+ C' ^* s$ _set i
- |- i" ~8 y7 E, D( i + 1)
% M- h- ^  ^0 L4 j
]% ?/ m; v' h- J( g( R5 ]
let j 35 t1 V# }7 V0 v& o
let sum-money 0+ R% r  {) B, b' S8 L
while[j < [trade-record-one-len] of myself]7 r- K: E; f( l: r. G/ T- E
[
* u6 M2 P% C/ G% q$ Vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
9 {9 @4 D) |6 B1 \0 g$ T  fset j; u% ~5 ^5 p: Q5 q# j: x) u! w
( j + 1)
9 `2 [* E; t1 ~% V5 u
]
+ d7 o- D+ m1 f4 f3 p2 w6 K. Hlet k 3
8 n1 z; s9 u! Q8 e- Blet power 0
3 `& w" [5 v* Z4 H+ Olet local 0
8 q6 a/ f5 x, K: m6 d) O% ^) gwhile [k <[trade-record-one-len] of myself]5 Q/ Z: y( P: C. L+ q( s0 k
[1 G6 ?; M) F8 B/ ?
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) 4 O2 \) c$ ^4 q. `/ w4 a9 m
set k (k + 1)+ s) e# G: a! P
]- |1 P$ @$ ^' T- ~; G. y2 U! e
set [local-reputation] of myself (local)
' T, r2 Y$ d0 L  ]end) T9 }: I& V; E& ~) c1 G$ {
+ l) x2 Z# C% s- I
to update-neighbor-total& a  K+ V! d* \( `  ^
# x* e, ^9 ~! e0 m
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 T3 B1 Y# v$ m4 e5 G0 R4 j
, b9 k1 k( ?1 @' r( A7 U

  u# i4 X& J( n) hend
# z; F% a2 @* |% r& [6 l! u+ b6 H4 \( k- z- l
to update-credibility-ijl 5 r; V) x8 |0 R
' P4 C7 a4 x* a0 M) b
;;
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。
, s3 n) ]8 y8 }) Wlet l 0
2 T; N: r. {1 Z3 T1 wwhile[ l < people ]* E: f, D, o$ R. W1 H
;;
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
- k8 P: j" K' j! t[
7 I& H  u! M8 L) W$ o* qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 E( i6 a; v) ?  [3 B6 Q% S
if (trade-record-one-j-l-len > 3)7 h* L  H  v( f6 I( p7 @# t8 Z
[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
: @1 V$ ~/ E! alet i 3" A2 V- B! t. M$ z
let sum-time 0
0 s; V6 e. Q& Iwhile[i < trade-record-one-len]$ H( D1 D: G4 s
[& g+ r! K# Y8 M/ U4 O
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ L) z8 p* d5 ~9 ^+ j
set i
( s5 g0 P7 [* `- U* |0 v* Q$ ~, W( i + 1)
3 f' E0 f" }6 B+ ~; B8 L
]: H( X' |% ~  v
let credibility-i-j-l 0
0 M- h9 }/ T. h; p3 \" S;;i
评价(jjl的评价)9 x2 y" x: d  z9 `9 \$ c
let j 31 J+ ^& ~$ ?) ^, k: O' q
let k 4
8 c& T: H$ Z# ]- Lwhile[j < trade-record-one-len]; n6 @" Z) L0 V* V- m
[
, G. u8 c9 S" i: y9 m0 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  h3 Y/ ^3 t* C' o+ k$ I8 g
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)% P; k# G  F; A- f* S2 u5 l: e
set j3 ]1 a/ z" B% l
( j + 1)
. j# u& T2 B/ J& j& E" r
]  _0 {# ?5 C7 E% }7 S  N* X& G( I, J
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 ))2 k; M7 T/ u6 b+ |" ~, [2 X
* L# F$ w; P% S
6 T* o3 s& u! J9 O$ A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- K, e* {- [% ~/ M0 e% O;;
及时更新il的评价质量的评价
6 v8 f  ~  U% f) ]3 u7 k4 O5 kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) g5 g3 C# ?& ^9 N, U: f, @set l (l + 1)9 a; g& O" Q) K# e$ ~/ q
]& P+ [# n& b* q2 W; i
end
& n3 R* e  u- y+ [: L: {, {
$ [+ i6 w$ N! V* D! [/ qto update-credibility-list
' b+ R# U6 ?, `" H7 d2 {* t' ilet i 0
; O  o0 O' m4 Y3 B! \' V2 S% twhile[i < people]0 A, H7 i* y* D" F" S- v, W
[
( a' ?& x3 m' O2 x. Alet j 0
0 A5 Z2 @5 _1 X3 G) d' A" Qlet note 0
( s9 R% f; T. Q+ `2 Z1 Y( _( Nlet k 0! D9 A. F6 g) A5 N6 d8 O, v
;;
计作出过评价的邻居节点的数目
) V7 N3 W; O' R5 k* D1 Vwhile[j < people]
. y1 e4 @8 w/ G[3 |0 h2 C) w5 C+ ?
if (item j( [credibility] of turtle (i + 1)) != -1)
& C+ N, Q6 p7 z/ A3 j;;
判断是否给本turtle的评价质量做出过评价的节点
* ?6 X0 l) R1 h) b[set note (note + item j ([credibility]of turtle (i + 1)))
  ]; R9 N- ]$ A& I& j$ \;;*(exp (-(people - 2)))/(people - 2))]

# k$ C5 d1 j# }7 rset k (k + 1)
+ F3 G6 ^9 \. z]7 t' e. V3 ~2 A1 @4 Z# k& Z2 ^) a
set j (j + 1)
5 ^( R6 S1 |1 L. X* N$ E]% w+ ], @6 V/ O( j( r$ v
set note (note *(exp (- (1 / k)))/ k)  ], S- f( n7 d- V
set credibility-list (replace-item i credibility-list note)) w6 z9 x, M/ A5 F  B" N
set i (i + 1)! v: ~) k: V0 E( u& l* m
]
* P' u* m& b" Y& H6 pend" _$ c+ F) z7 \5 u

2 v/ g; D# }7 T' rto update-global-reputation-list& M  [6 F, F+ r0 M% ?  F
let j 0- Q+ e9 ~1 H9 ^0 {& E2 y9 d: a
while[j < people]
6 f2 L8 d! |0 v. v4 q[
( K" e& o4 i  zlet new 01 |' F- A9 e/ ^& z/ A3 i8 O$ m
;;
暂存新的一个全局声誉
5 h* }. r& S: B8 ~9 rlet i 0
% c  p& r) o7 U: }& M  T' Y5 @let sum-money 0
) _1 j, A5 r) @let credibility-money 0; U& F: E3 z7 L' m5 j; O4 v
while [i < people]
: O" q# w# [, L[
" w/ U7 z9 y8 R' q2 x7 g; O9 fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( k1 `( a+ B* E8 c& y2 M% N6 `
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))  g! s% g" c# }; E
set i (i + 1)
' y7 g" e, I* a! u2 E]0 R! [- u1 I; }2 }9 F, o6 k
let k 0
4 y* E5 `0 X' alet new1 05 x$ a- R+ y" H+ Q3 j% `+ E
while [k < people]
& F' \8 C9 f0 h! n4 ]  d[
! Q6 E- x" f. U' Y: D* Iset 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)
4 ~- b& t/ |& w" V* b) o( A- Qset k (k + 1)9 D+ B& t& K" h. E3 J1 T! W
]
6 K, ?6 {" [* mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # S* O0 X5 u: S9 E% }, C
set global-reputation-list (replace-item j global-reputation-list new)
# o6 P8 @! I2 ^* ^! D1 Iset j (j + 1)
- q% G# L% s6 A" E+ V) D4 t]
! [) E$ B, N& J/ s* ]end3 j8 L5 q3 |( G3 t! P8 V
# r2 u1 Q% |7 m$ B+ @) e3 L

2 k9 C' K8 o+ ^1 f8 F1 W/ Q* |& H/ g$ [9 D, }4 b8 C  G4 f% J
to get-color
9 [  v/ G0 f0 n" d7 Z" d+ {5 w. R; t- s" B5 H) w. `! m6 |
set color blue

+ c( H7 J: ^) c& _end
' G& q$ S4 A& E* I; |8 ]1 w+ d5 _. z8 M6 p; V( r1 l  j$ s
to poll-class: J8 x! Z( A" |1 W* N+ `0 I
end3 i& Q( B2 c% B
- {. A: B* f6 _
to setup-plot1
& Z5 N  }# H. @5 D* }. m. Q& ?" h$ g2 ^3 @! S
set-current-plot "Trends-of-Local-reputation"

. I! y  K* k  d1 n2 o/ P5 r7 e. u  r3 n" e/ |& p
set-plot-x-range 0 xmax
# y8 V3 j, h" }" H! X. S9 x- Z
* I* P! G# N. v! D4 f. v
set-plot-y-range 0.0 ymax
9 C  z8 f5 g- \9 Y+ F* T2 c  X8 a1 ]5 Q
end
  t- z- _  L# ?& O4 e# k6 O0 o% Y- Z* ]0 T0 h
to setup-plot2
( F3 M% K( A& V- T4 {3 R
) {  ~: H7 e) j, p# {; q( o# L; oset-current-plot "Trends-of-global-reputation"
0 t. T4 p' i" Z6 o

# z, `5 v. t; v6 z( Gset-plot-x-range 0 xmax
% m( f5 g/ P9 I, c+ k

# {( I! u9 E  i! ~set-plot-y-range 0.0 ymax

, h0 F0 n+ a3 l) n' G, Gend
3 t: k, F/ {; L
6 k' j* L& ?9 |. w# i3 z) Mto setup-plot35 \: C' {. U' i5 l: [
9 L8 R. s- B1 V4 _" \/ ^
set-current-plot "Trends-of-credibility"
' V* Y- l* K0 x# I# n! W1 w

2 b6 z; v  r6 J* `1 s1 |$ h8 bset-plot-x-range 0 xmax
" L- O' G. F7 O7 C3 ~6 {+ m
( ~$ U: @2 J8 R+ U- g/ j. z
set-plot-y-range 0.0 ymax
! k* ~* l  r7 j" u% h$ a
end9 r9 ], i7 n2 \

7 k0 J. X) ?4 Y7 `5 m& s6 ito do-plots: i) t" ~3 c9 i/ z+ Y0 s! B# z9 @
set-current-plot "Trends-of-Local-reputation"
; U* y1 V1 e: m3 Z& b6 Wset-current-plot-pen "Honest service"
( ~/ l; ~: h$ Z; w: m5 R. Y% rend
8 p" E, z; K$ T+ x( O
0 z8 V( k3 W; T  d" ^6 _- c8 H2 p[ 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." h( |, O- a9 n9 O% b1 {8 c

# G3 Y3 g1 c/ ^) r+ Z这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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