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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:( i& P$ R1 d$ y5 C# V) }: ^) c9 }' V
to do-business " O0 i+ i* c! a; f, {% w/ W
rt random 3601 X3 i6 ?4 Q: V- Z. X
fd 1
# d4 `# ~4 ]9 T$ H/ @- _ ifelse(other turtles-here != nobody)[
1 D% C2 M+ ]! n, U9 v5 }   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.
: x1 g- K. \$ d* x* k/ F   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      {* D# u9 Z* L
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, \# x; K" g$ m  l! w+ B# p
   set [trade-record-one-len] of self length [trade-record-one] of self
( G, b8 B# m: F5 I   set trade-record-current( list (timer) (random money-upper-limit))9 M# \  T/ \7 ]0 J1 v

* F# O7 u$ Y( g+ q/ F8 c问题的提示如下:
) F$ o! h+ f/ [( j
( Z* _9 Q; D1 G0 L7 D- o) ~  |error while turtle 50 running OF in procedure DO-BUSINESS4 a) M8 }- [0 ^" M0 W' u( z! A8 R
  called by procedure GO, J2 ~8 T5 O! J# |& r$ }) S2 p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 c/ u7 v( R0 c( Y( `  r: X
(halted running of go)0 h( a! w5 N. F8 |) K- z$ m- c

3 Q  Y* w) }6 G+ m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~~
. a% a$ f" e; Q# J7 u) C5 r- N8 ^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# y- G1 Y8 B. Eglobals[
6 E. M. v& Q& v8 [: gxmax
! W0 T# `* I! r/ Vymax- i$ p9 u  A: q
global-reputation-list
" ~% _. _$ O2 ]7 n  M: Q1 c
) Q$ _+ f* M* z$ K;;
每一个turtle的全局声誉都存在此LIST
& P- i- A$ s. }- I3 h. lcredibility-list
/ m7 j; ]! C, p6 y! A;;
每一个turtle的评价可信度
, ]* ^3 s4 Q3 M) Ahonest-service5 [: [' W7 l/ M% f# H' J) s
unhonest-service
+ a) [2 X  o- n8 X7 C" Hoscillation
4 ~! G$ {# U0 x6 }rand-dynamic3 F" p, Z% h: N" U
]
0 G$ w# e0 |( A2 `! A/ ]1 c) C3 e; Q+ s
turtles-own[
7 [7 d6 Y8 ^+ R6 K" J: q% Utrade-record-all; h% Y% \, u6 H' Y6 a) W1 [
;;a list of lists,
trade-record-one组成7 F! D0 H) W: s& B6 f
trade-record-one* [0 e7 l2 q. F: U: x; g) a* g
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ o# v* \* L$ b) }+ g( D/ n% d. Q- @  s$ `
;;[
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]]4 X8 Y  @3 ]# o
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]
/ g5 A& H/ d$ G4 Pcredibility-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
  }# K, ]* J: n7 gneighbor-total
3 j# S5 r) |6 Z. ]  [- g;;
记录该turtle的邻居节点的数目
: ]4 b. ]& C3 `; Q$ H5 Htrade-time- F3 P  l0 c' ~
;;
当前发生交易的turtle的交易时间
5 }2 J6 Q9 F, j. l! ]- _appraise-give
7 I: S9 d2 d0 L# z6 K( T;;
当前发生交易时给出的评价% p- U( }: x3 d9 N& v
appraise-receive; k0 h4 a% C" A! G( n
;;
当前发生交易时收到的评价" v2 H3 I' L4 C( Z- ?3 c
appraise-time+ q2 o( h+ A( m& g
;;
当前发生交易时的评价时间
) n7 K- G- G3 q0 X3 j; ?3 vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉1 W' S0 s+ W; J4 F
trade-times-total- k% J: I/ |' S& ?' ?
;;
与当前turtle的交易总次数) H) b9 H" n' k% ?
trade-money-total1 R- e) X2 X! a' E$ {9 E
;;
与当前turtle的交易总金额% a7 H) L, F2 [2 x# `* {+ V
local-reputation
  s- b0 c7 U4 s& O& I7 cglobal-reputation
, ~) A/ `$ ^- _5 J& _credibility
) p1 f$ p8 r& e! B& d6 ]' d;;
评价可信度,每次交易后都需要更新
7 i1 ~4 |8 y0 t0 G3 ccredibility-all) ]9 O( S6 B+ R+ M) b4 {+ E
;;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
. Z9 @2 M5 ?# Z' Q) _& y4 X8 x1 N2 d+ b# S
;;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
) p9 r5 ?4 s/ ~credibility-one0 X1 E' t2 |8 v7 v; }$ x6 m1 q# d9 U
;;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people7 @9 J& o, I; p, ~- F' o
global-proportion
4 p& v6 @6 u3 k- h+ N9 S! C: Lcustomer
" j- \# V$ h1 u+ s+ P" M7 Xcustomer-no% N  ]; y5 ]* K3 L; I) ]; f; t
trust-ok  D/ h( W/ X( H* p5 a: T; W) K0 O* g
trade-record-one-len;;trade-record-one的长度
+ ^8 W- S! J. N& X4 b1 F]
( `* I2 O; U" S/ N* e1 ^) M
/ T1 c6 \2 D4 g6 s) Y: O( ^;;setup procedure
9 @/ y3 v- ~9 d& n/ u7 U" y# }7 s
+ R1 R* Y- O% U. N4 \to setup
8 }6 d, w; {/ g" [! V2 u2 q8 F! m, f5 W
' u* s# A2 `+ o+ d  b) b) B7 ]! jca

2 F- ~* B$ T0 J3 }0 B4 e
  Q0 a* A9 l/ d; R( hinitialize-settings

+ a7 ]7 f% L$ e: }3 K5 f& S6 x# X
/ ?) Z( E/ _" M4 n1 scrt people [setup-turtles]
: G$ E1 c. ^, Z# e
' W! r) E; ]+ K7 p
reset-timer

3 _0 C/ {0 o+ B
% I- Z; J1 v/ L5 p& K! q' w' [: upoll-class

) e, E9 j0 q5 Y; I
5 y3 ]9 e; K. O# w4 E( Q' J) N. Tsetup-plots
" _+ n- q) U- `" ^' r& c6 g( n  T0 ~
  F( `6 _6 M( J2 z
do-plots

+ l! r" H$ z. F4 hend
& G! [. w( S+ g6 V& ~9 @, }! R
5 X  B7 d1 Y& f" B, X- V2 t8 nto initialize-settings
2 m3 C4 e" h3 g2 V7 l8 C6 h" g" ~% X: n! g, q; `7 [
set global-reputation-list []
- v% E3 W# f- G; I6 N2 W5 [* H

. v( }: `1 U0 ]/ l" Cset credibility-list n-values people [0.5]

  j- I4 }; s3 D! i) t" }% r0 V0 N( V( a/ `5 u# j( G5 j
set honest-service 0
; f' ~4 w; }% E

6 \5 @" I+ X8 v# k; f8 I% |1 Lset unhonest-service 0
# \. B, x6 H: F8 h) B% {
3 @+ s2 A4 U3 l$ s, e3 M: j
set oscillation 0
' G* ?/ S. A  ~( ]& m" I% N
( f- m0 E, P' b: e3 Q1 e7 A1 i9 [
set rand-dynamic 0
3 M5 ]0 W/ x+ P, l' U& l, J! G' B) A
end# F/ m2 @- D1 i: K# w4 l6 o( d
; h3 b/ H7 a6 t( {) |5 K" @
to setup-turtles 9 d* B0 |3 B; Q' U. |8 u% j
set shape "person"
0 o0 d7 C1 {& E  Z; ~setxy random-xcor random-ycor! Q/ t7 Z- O0 b; T
set trade-record-one []# r$ C- @5 W- r1 o3 r  T9 ~
' N" _9 {' t; c" |( M7 P' ?
set trade-record-all n-values people [(list (? + 1) 0 0)] ) }! A. t6 E& v) J

9 ]( D  C' A% D2 k) wset trade-record-current []% h( X  j# H! t
set credibility-receive []
6 F1 [% M! Y3 I5 `, S: Uset local-reputation 0.5
1 `6 b  D* f1 F  O+ @  ]2 eset neighbor-total 02 w% r! R1 N$ r" P2 S: |6 C
set trade-times-total 05 @5 ^- x8 D" Q5 F! `
set trade-money-total 0/ O$ e) o6 r2 t, n% u# W
set customer nobody& h4 k) P# e6 _% ~& k! ^
set credibility-all n-values people [creat-credibility]6 S+ m  }1 k$ F) Z& |7 @
set credibility n-values people [-1]& Q, T* x1 T9 c: U5 A5 K  Y
get-color. t$ ]; Q3 O# k- l

% {* ?  }2 y  g- {% [* }$ G9 r/ gend
! t& S( L" y2 l* G
5 R6 ~1 |/ ]! j5 nto-report creat-credibility
8 P$ u, a& z2 E2 ]report n-values people [0.5]2 ]3 c$ S2 p+ ^/ ?( @: G% }7 l
end
. Y. n- x' M- n8 a) r0 n2 h7 D6 ?7 ~, Y" |! o) O' ~
to setup-plots) o% {# p5 M# M4 ~/ Y( s9 k
- ^9 i4 f/ s. t& \5 g* u5 y
set xmax 30
, R7 T6 I/ n; }3 _. r: n4 x2 S
: I6 n2 Q2 T6 n0 P/ u# F0 F5 e7 L
set ymax 1.0
/ k& A: |) m. p! {3 ]) i: w

% G6 j' i) c' j. |$ Z; qclear-all-plots
) `4 ]: Q- ]4 @, C/ N  V
5 f5 z" Q1 x% Y2 u
setup-plot1
" f( M" ]" _6 ~4 N. J. u
" i/ s' S) }( x- A4 ~' e( v' L
setup-plot2

/ l* f0 o' r+ _
) V- x/ O# s3 Dsetup-plot3

/ _: k1 e- c1 P* C( T# R8 Wend
- S- S. c% [7 |6 _, h" a% |2 v8 V; T- O! \9 [
;;run time procedures
7 x" ^% R" `! C! L, t9 a, f# h6 V, c8 k" t3 c; l
to go5 ~9 \. ^9 l8 E9 m5 n
( U0 d; V) `. L, b2 i/ F: W4 ]- ^
ask turtles [do-business]
- A; j* `8 C/ a. D$ w. l
end
" g( |( h! c/ B- b' w: l! w% E( W
to do-business & e; J- |7 j. ^8 [: }# Q

; h# m9 Z$ f0 _# W
( c% F/ ?. i3 c- Z( |, srt random 360

( T# |1 J4 l9 U/ M" v  T3 @$ M: O* y: E& O# q8 j+ J$ q0 h
fd 1
1 b+ Z8 {4 {' A* a
# g- R7 r3 d% j) s6 w
ifelse(other turtles-here != nobody)[

9 U% C3 V6 r6 ^" W+ B
+ |! a# D- c( F/ [1 w' s' lset customer one-of other turtles-here
! k7 \% j: Q( [* P

1 G( f- T. z+ c$ c# h$ J;; set [customer] of customer myself

. J8 ^  x" n0 o% n
  m4 ~: [+ y( s; y+ S( \set [trade-record-one] of self item (([who] of customer) - 1)$ s; O- X6 B2 v! b! u% n% J) k5 q
[trade-record-all]of self
) m1 u7 ^5 r5 n4 t; H$ T;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 F8 j( a! j: m6 Q% f; b- s' w+ V
/ {! n9 ~1 U( q
set [trade-record-one] of customer item (([who] of self) - 1); ~8 U! y' m' h! f4 h
[trade-record-all]of customer

+ }3 M  I+ n  o( K/ f# i% i! n- n! z+ L0 f
set [trade-record-one-len] of self length [trade-record-one] of self
& P: |" U, R& C

% W; _3 ]+ g9 [% z, Qset trade-record-current( list (timer) (random money-upper-limit))
) [/ w% _, J5 [1 _" J; w- e' E- [
2 M* [- J: s6 K1 w/ H3 |6 K. H
ask self [do-trust]( ]& N+ G+ K3 \' w! P, M
;;
先求ij的信任度
3 g6 ]1 y3 \8 j" Y8 s
" c- B, ^) |0 I  }) Z3 V( i8 bif ([trust-ok] of self)% B. R$ p, q- m& s* H  Y
;;
根据ij的信任度来决定是否与j进行交易[! T! h7 j, F+ y" M4 C3 S6 {
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 p9 h* X. @- J! c7 N5 D( L/ y" J' x
; r; p/ k' n. J, x! e% T
[
$ S' M" c( {6 b. b" \* A

  t7 ?# v0 P: N# T& k4 X( O* ydo-trade

& k  x* K0 _! G) R
2 _0 _8 A. g2 nupdate-credibility-ijl
/ O% d/ E( T( d' h7 o9 N7 b. w7 ?
$ h- D; J  L- [2 h) c
update-credibility-list
- x5 m  S+ e  d* t
) Z# a- i/ |1 n+ j  n

6 k& `; M/ {2 l% {+ rupdate-global-reputation-list
$ ^- M$ Z3 ~1 l/ |- x
* v# [# n) r2 N$ G, _) ~/ N+ W5 B
poll-class
" P& b" D6 Q& b/ |5 f/ F2 L" N
' K! m1 ^) g* i" H. [' G
get-color
/ r1 |, T' O& L- |

  r: T! U: N8 ~" E/ T5 x# V( D]]
- C' C' K# e& O8 S& e$ A
, F' |4 M  L' P$ \2 \9 u7 l. m;;
如果所得的信任度满足条件,则进行交易; O- `$ I! w. F
( c0 p1 f3 a# o; F, l
[
; a$ {8 y2 _# H5 B

4 [2 X' ?0 h: t  s& g# nrt random 360

% U. N! a1 ]8 ]3 v1 L# E8 ^* J8 Y" f& G0 d
fd 1

  Z9 ]6 N6 u. B
+ g! p0 @+ o$ e; x+ ]! []

7 R8 o+ q( o" I2 F, i5 K
4 y% l+ Y  J& J$ J6 o8 h8 tend

+ ?8 f) v0 ^! E' Y3 J: @4 g9 ?' C6 A; d6 d; `4 L6 ~. E; P
to do-trust
! s5 w3 g3 J0 _" }  B% z: eset trust-ok False5 N0 b1 O8 j5 ?5 X& v9 ~
5 s! i4 Q: ^6 u& w6 G# _

$ s* W: I' Y+ i! `' j: Flet max-trade-times 0' A6 ^* q) g3 I3 T" {: y$ T$ l4 S
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 s9 t* d9 O- `$ Q& D5 M
let max-trade-money 0+ J$ n5 A" M% @9 J& Q9 J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- X" J2 Z$ \4 m5 i7 Q. ?; ]let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). [" Q- Z, c0 r+ x, r7 L
% O0 O; S# Y! A
( f' n5 D6 y/ {+ s
get-global-proportion2 b0 g/ G. d3 J+ {
let trust-value: [- u, _  u/ ]. |1 ^4 y3 @. @5 U
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)
" N$ D% ^2 s" ~9 l5 Q" l
if(trust-value > trade-trust-value)
' `: w! g1 _5 V7 j  W9 @4 u[set trust-ok true]
4 P0 U1 u3 k) v$ e* `end
7 @3 [4 _' m" e
3 o& j& @  Q- B. l6 vto get-global-proportion% }; T0 d* @+ t& O; R
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" k" \1 E' l4 Z9 C& e5 V  z  o
[set global-proportion 0]! d/ p$ w; X& P  P' D4 z& a5 @* b
[let i 0
; w1 r4 {# w% {% e- @0 R( Plet sum-money 0
( P2 z! L, r+ ]6 v: h4 [5 X& Cwhile[ i < people]
+ Q3 I; f/ {" I: R" q[8 P; H2 w* t+ y' e8 V
if( length (item i+ R! x. Q$ p2 M" V' V/ c
[trade-record-all] of customer) > 3 )
0 I* S( U( z4 b. r5 [8 t# V/ K
[1 d; G5 q3 z& U3 U; \" u7 o7 D' _4 X
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 {8 ^, w3 ^( n7 W3 ~]
8 `  l$ {: J/ Q  W) B5 n]
+ B7 N2 d! `7 h7 p/ flet j 0* s( O$ J' [; u
let note 02 }4 _# C5 B  m
while[ j < people]$ H; s& Q* `( J; G
[
0 P! T8 I8 V5 ^& _% _if( length (item i
  ~0 s1 z, k( G& j' d[trade-record-all] of customer) > 3 )

# u3 b* A9 k- Q, U3 ]$ S% r[
1 \9 m8 k. \" K6 z* Q# x. Qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 D2 |  g4 r7 n( y/ ^5 ^7 f( i9 F$ V[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 t1 T* y2 c3 g$ b2 y; \+ g* C[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# B* t: e) j5 g0 Q0 T* v
]
# h1 d2 i/ q* w) v1 F9 g]
" k2 g( z# N7 ^set global-proportion note
  e- v$ I' Q) o* P) K! O( P; d]
$ t0 ~" M  K9 u& p. hend
. ^; `( h$ f0 y$ Z8 |8 @" e% k
9 b; v' g: m; B6 h! Jto do-trade
1 C  z; J7 x6 S7 b& H) W) Y;;
这个过程实际上是给双方作出评价的过程
' y  m" P8 ^" Z8 }2 a, ?9 t0 b6 m, Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' ?+ r$ n/ c. _2 Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& y. n7 C: U* c5 X2 |& w" O8 s( \
set trade-record-current lput(timer) trade-record-current
! U" F, `* h3 ]4 j$ D5 F;;
评价时间2 v5 [; I, E# i
ask myself [: N  E* V! s- q, N2 @" x
update-local-reputation, {% k$ ^! Q2 y# b' V2 Y( d! p* W9 m
set trade-record-current lput([local-reputation] of myself) trade-record-current6 d/ ~2 {: m& C, [; y
]
( }1 \& ~% U. L: N. Q7 E' W* iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 z5 K3 \- @7 D  ^. v. \0 @+ A
;;
将此次交易的记录加入到trade-record-one
4 b& Y+ B' J4 X7 c, [set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( s8 e  _7 I, o2 b# @let note (item 2 trade-record-current )9 @" y  E+ K0 y* P+ O0 b
set trade-record-current
" T, s1 T+ d7 c( t6 L) _$ n(replace-item 2 trade-record-current (item 3 trade-record-current))
2 D0 |5 g/ @( K: |* z
set trade-record-current( `" D; a' G0 z  ~, N
(replace-item 3 trade-record-current note)5 `! ^2 O. k: e- {# t/ e

/ W* y& J6 [0 ]8 _( h- F6 ?3 [

7 `* \2 t9 n4 S2 e, d5 iask customer [
9 P* x+ d: K5 qupdate-local-reputation' Z% o1 [6 i; ~+ D9 N% N# x
set trade-record-current
% i8 u! Z) S5 y7 j( x0 C# W(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# V& d$ y  \1 ?, i& \1 Z
]
2 R3 P8 d5 \2 M1 C0 A
% ]) e4 P5 q5 @' m7 q3 G) A+ Z& j

& x! D4 n9 w6 E; K( b4 U5 Q; ?set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- \! B. c* q9 O# ~3 U$ h3 ]
) b3 P, h2 F/ F8 t3 q% |
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' E; d& d% E, T1 y4 z;;
将此次交易的记录加入到customertrade-record-all
0 u; M$ v+ _3 o3 n  x1 uend
2 l3 ?1 @& }0 M& o$ [4 z, |# M1 a
" @8 B" z. i) h/ S7 Zto update-local-reputation
8 a" D- g$ I* \# A6 e+ d: Nset [trade-record-one-len] of myself length [trade-record-one] of myself
$ @# g; N2 ], ?4 R
$ A5 w" Q2 l; A$ g6 `4 _
: r4 |$ e9 I1 d9 |2 c# _5 K;;if [trade-record-one-len] of myself > 3
! m% v0 i7 V* n0 ?: {
update-neighbor-total
8 T2 N" q/ k" h. };;
更新邻居节点的数目,在此进行8 _0 F, l. w% ^6 w7 o
let i 3& R& b8 A( W! S! ^3 i) C
let sum-time 0, R6 l0 t0 B4 b0 J1 @
while[i < [trade-record-one-len] of myself]
' ~  X* ?8 o& V/ W[
% O4 s3 Y, ^) }set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# \$ y0 _5 n! B6 E7 x
set i( R* e4 Q* E2 G, V5 A( V+ w/ ?
( i + 1)

9 `8 b0 x/ m. S* ?! R2 P]
6 w$ c6 J# l+ `. j* D" glet j 35 `- K6 r( {* ?5 I  A/ q, S2 N
let sum-money 0
* U& U  V* Q$ D5 [! [9 U' Mwhile[j < [trade-record-one-len] of myself]9 v0 [5 @) s) Q1 O9 C
[. n" `# u2 I! @$ @
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)  L" k7 o/ ^- C. G
set j! O5 z/ k) P, A9 R$ T* g
( j + 1)

( c! r* ]5 J' `5 j]0 k  i3 g, C7 J* }5 k' J' F
let k 3
- z- M' a! @6 w$ ]+ i! c, Ulet power 02 ]4 y* |4 x3 H
let local 00 g. g# ?# s: j+ a3 v2 n
while [k <[trade-record-one-len] of myself]0 R+ o' A; D$ C6 s3 v
[
, O2 a. _5 k3 v7 M, Vset 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)
( e4 z+ _0 n. x; U8 \set k (k + 1)
  v# b: S6 S! s9 l" x]
; `+ J* Q  @8 P, E0 S6 Uset [local-reputation] of myself (local)8 }: t/ G4 D. j* v8 |; o4 C9 ^
end
% R& P. e# K& G7 h0 Z. e
! [8 q: d4 B5 A5 m5 u: ]! H1 {4 v, x3 nto update-neighbor-total3 _; p3 x. w+ z( k/ N! D

5 c% G. p  ^8 F" {if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# c- C' t9 v# C/ B. x
" u' t5 e4 C- a

& k5 D2 y$ S9 ]! E% w/ S7 _end7 t$ b( \, @% w; |

7 X% C/ X* e* i; kto update-credibility-ijl 1 Y9 x1 d) D% d0 V, D- S

* C2 r$ A# k" k9 _;;
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。% A8 d# m0 y* G# q
let l 0
- z1 x( y+ P8 z9 ~while[ l < people ]
' }2 t1 I$ u5 |;;
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3 V+ i) |3 I/ h5 _; ^" Q' \& F
[! G6 W' F: a% E6 a+ }& h3 B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ ?; R  k3 n" ~: Nif (trade-record-one-j-l-len > 3): o: N9 i+ \  d0 D4 j1 n
[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 Q. Y- c- {+ l0 w' e& [let i 3, ~6 ^6 O  I' Q
let sum-time 0% q& Y! x& u+ q9 {. k) S8 ~) R
while[i < trade-record-one-len]
, ]# m: ?  P) d6 c[5 p, M& [9 L: ?1 ^% N; k
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 E8 b' _7 d& w- r* R2 F3 _" c
set i
) \8 h2 Q; }: _/ j1 {2 g; |( i + 1)

% M  c9 x) H' w; p# m; Z/ P) S]+ z' U, X) `6 L% T2 C' J' V4 I
let credibility-i-j-l 0
2 _) ^, @2 u, u7 D6 m% ]- [+ ~;;i
评价(jjl的评价)& k" u: R8 Y3 N8 u7 k
let j 3# {8 |6 _! g' V
let k 4, [* ]1 t: I8 i# f4 C  @
while[j < trade-record-one-len]
& u# k1 S# Q0 {( a% O[
  S2 I6 Q* E3 k4 r. A; pwhile [((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' N! e5 t1 F/ V8 }
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)& X- S2 E* ?  N$ J% b
set j
% m$ A5 r2 J2 `) i$ X, m; M7 K( j + 1)

8 d7 T9 q3 p0 m& q* a" ^1 |]
, i5 k! a/ g: ]0 Zset [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 ))
! [# V2 A/ ]4 N; n* X
4 S, v& j, I/ x( w" A

8 @4 s/ w* w9 E1 ]let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 b" W' V. r- Z/ s$ L5 l' s
;;
及时更新il的评价质量的评价
" W8 T' |8 r6 ], w# l$ \set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) p* s# g: }/ `7 O: j2 f) qset l (l + 1)' v4 i6 U# J) T( B) t5 [! x
]. W( T' [7 `2 O4 b+ q, m
end8 w/ s) R$ X* V2 R

+ H3 J4 S! ]5 ?to update-credibility-list
: Q6 N; y# o7 ?* x. S- d" b$ }# S% vlet i 0
; y* T1 P# d: H4 S) l, L6 b$ [4 vwhile[i < people]3 _+ g9 S" D7 S4 h4 @$ \
[
# Q0 I4 t! }: d0 d9 ]- blet j 01 w' B! T- p% k1 E
let note 0
% B! j# G, U( K0 N6 ^/ e% Alet k 0- c# _/ @6 C) G! Z) c- F
;;
计作出过评价的邻居节点的数目7 ^# o0 |4 J* X3 I$ D
while[j < people]
, f/ k) z/ c0 t. V[( e7 L! \1 o% m) M6 [4 S
if (item j( [credibility] of turtle (i + 1)) != -1), D% X2 ~3 R- ^
;;
判断是否给本turtle的评价质量做出过评价的节点
3 P' r( k' g. L8 T[set note (note + item j ([credibility]of turtle (i + 1)))
: e' R4 g6 K$ X4 X! \;;*(exp (-(people - 2)))/(people - 2))]
8 s9 y( g( a* D: W5 I
set k (k + 1)* U9 R7 z/ v7 S" u+ i. Y# o
]
  b; q2 r4 z5 A/ tset j (j + 1)7 I/ W/ a/ d, A( Q' a% j
]( o! A  s8 n# p' W- d* H
set note (note *(exp (- (1 / k)))/ k)
$ s# B/ w6 r. T/ Z, Mset credibility-list (replace-item i credibility-list note), ]6 @. R- C! Z
set i (i + 1)! r" @- E: E& S
]* G, G5 h% O) b. _
end! V' N8 U$ q& ~7 F* D' L

- w8 F/ B7 h* l' Z' i$ ^  q& Qto update-global-reputation-list1 K5 `6 e+ f3 v
let j 07 Y& }: z' o3 F1 a9 N
while[j < people]
1 T+ y8 q% z. m% M% J[6 i0 H: H) Y1 s# D, ~
let new 0' U8 s! J% W. Q2 D' d$ I
;;
暂存新的一个全局声誉% W, h$ ~* f% f5 X- l
let i 0
5 {/ U+ x# |& L" C: U- N0 Ylet sum-money 0# |- ], P; p- T; Q1 L' U+ u
let credibility-money 0  Z' K% c" A" p+ `9 C0 R" z
while [i < people]
2 X5 \4 {/ m4 R- n- H: W[
% R& {: h! ^3 X. O; bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% j3 _6 W* L, m4 m! Xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& g* ?$ Z! r# A8 h  V- ?6 Cset i (i + 1)1 U6 n- @" s' g. q$ r' X
]$ z" g7 C7 g; d, ~1 e% c
let k 03 X7 a: L$ x, w! g2 Z
let new1 0
2 y! ~- ?9 P+ H  |& a$ u& rwhile [k < people]$ x7 D* {- v! q5 b3 y
[
. L$ G# @7 e: n2 Q6 B- B/ cset 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)
- {3 \- E% L5 h5 rset k (k + 1)
$ ^/ F" v) q  |8 |. C]4 W$ A( r# x5 V! m3 a+ w8 z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# F3 o$ i' J1 R; r4 g8 Z, k3 zset global-reputation-list (replace-item j global-reputation-list new)' a$ {* G; |$ ]% R5 m. [0 t
set j (j + 1)) e  r; M- `( h5 a7 J
]
+ G# p0 d( A% ]4 Y9 ]/ U% }; `3 {% hend7 U$ U$ M) F; S* @% @
1 E% j8 u1 a3 O9 h$ f  m6 V5 `* J

/ \3 g' H! Q* n0 s! i9 u/ ~3 A- K+ g9 l  p/ l) k
to get-color
: m2 _6 P" u2 m1 R4 F" y# v" `$ o: w4 m; {8 }
set color blue

7 _8 D* c& |' \/ i& _) O, `end
: @; g) S3 A/ j( R  v: r, ]  _* X9 D7 g
to poll-class
. d' E3 `% _- g8 Fend
& n0 h5 D* j5 H- R
7 d  i# O2 ]# H1 p, x+ h  s  X5 @% i& Rto setup-plot10 V0 p$ c( y9 g! e- e
/ o' j5 f0 e3 a" Y/ t7 ?
set-current-plot "Trends-of-Local-reputation"
7 [* s8 `1 Q3 p+ v/ u$ t

8 x4 f7 I; T9 c& [) `, u, {set-plot-x-range 0 xmax

- d+ h2 ?! G0 Y3 M8 @# \2 _
  a. j  A+ d3 |2 }' Bset-plot-y-range 0.0 ymax
7 R2 M5 A* F4 H; e/ U
end2 P1 K1 _% n) b6 H8 G

7 }9 ?6 Z" y0 x, w8 `! Q2 wto setup-plot2
9 W( |* E! }4 Z( U+ Q) C* @
( ~4 h5 ]( p' ^2 [! \) t! Qset-current-plot "Trends-of-global-reputation"

$ ?4 B! k- R4 o$ i8 S# |3 Y/ S% S7 ~) _" u( K
set-plot-x-range 0 xmax
  v; _  y+ }  e6 ]

) Z# C: I1 Q4 `8 ?2 n. y3 r/ vset-plot-y-range 0.0 ymax
5 p) \3 z9 O/ S+ \! c7 U
end
4 y5 X) S6 s. Z# z" J: @3 w4 N' z' j' O
to setup-plot3
6 o0 \4 T: l4 @7 j( y* T! U9 K3 r! n/ h# V! x
set-current-plot "Trends-of-credibility"

, K  q2 U1 t3 s8 @
+ y2 f% P. ^0 q  oset-plot-x-range 0 xmax

$ _4 o7 n5 A- Y
: J% C' W5 G  s1 ?0 d: |+ x! cset-plot-y-range 0.0 ymax
3 p' k% x- B4 x- C  F0 B
end
* @+ G1 H- R* f1 i; [7 t9 |7 }9 x( n" H  v7 S; s0 L
to do-plots  U! e% r6 y) P
set-current-plot "Trends-of-Local-reputation"& F+ `" X8 y0 C* X
set-current-plot-pen "Honest service"
# g% z& l) u* O8 j# c+ A, _; Oend& I# A8 Y: v5 X- K6 F" s

* Q5 Q) E* C  e% C6 y2 D  ][ 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.
/ u  m' r! S! |  h5 I% V/ {4 ^! M8 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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