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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:
7 ?& a8 s/ f% ^to do-business
8 k# k0 W7 S, z5 g/ ]  n rt random 360
. Z" [! |  }4 c1 ?- V( k! @ fd 13 ?7 `' ?8 b0 |0 Z) R1 _1 `# H' u
ifelse(other turtles-here != nobody)[9 U4 P) l5 N& C
   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.
7 i3 M! o* E' _) @) Z* }$ o' ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 H* w1 Y  F4 ~- g/ e7 V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; h+ d3 ?% R: `1 k7 c   set [trade-record-one-len] of self length [trade-record-one] of self; _& d: I6 i: ~, }; r8 J
   set trade-record-current( list (timer) (random money-upper-limit))% h7 u2 K: Q# r

5 e# X; U& Q% R5 s$ k0 n+ |8 Z. `. e问题的提示如下:  q5 `  i. w  L0 d  ^5 M; S

0 @( i  v" E1 e/ b) r4 h; Lerror while turtle 50 running OF in procedure DO-BUSINESS
1 I, T& y9 |6 S; y- T' C( ]4 C! d  called by procedure GO
; c2 p7 s7 o0 FOF expected input to be a turtle agentset or turtle but got NOBODY instead.
: t3 ?  _% j' _  f% |
(halted running of go)
0 g* m; A" H! ^3 \; |5 E0 ?. [' u7 U2 n
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~~
( a8 B2 ^5 X/ D4 K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
! b" e: _& ?  x4 I! ~& I$ Mglobals[
# p% z9 u7 P& ]4 L+ hxmax
) w0 w' L, ~6 o/ ~. R1 ~2 b7 J- l* Bymax
8 ^: u8 f/ O- n2 Kglobal-reputation-list
) S1 s- B- ^/ Z. a
4 Y( I, O% s2 E  [7 X  n! A;;
每一个turtle的全局声誉都存在此LIST3 q- _$ E6 J- t( b
credibility-list
$ k! Y, P8 K( V3 [# ~% G1 o9 q;;
每一个turtle的评价可信度
" {, X- p0 m" Khonest-service
0 p4 c4 e4 v  v3 F, f) ]+ f4 Yunhonest-service- L/ g% X& s3 U2 w: e
oscillation
! m! i2 B; \( \( j# f% Z: X( t+ Trand-dynamic; w8 W2 U" W& I1 m' K9 {" H7 ?
]
: O$ s4 |8 S1 P3 r' A
9 a& C6 d* m8 e& Kturtles-own[
% ~/ D6 ~/ _8 q* v+ K# E$ Wtrade-record-all
5 t9 i, @; q! C' G! r9 v4 D  W$ w;;a list of lists,
trade-record-one组成+ T3 a. j- f8 `
trade-record-one9 ^3 C0 J& |# 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" B4 }" `7 g. ]/ U) Z6 G- l
- B/ E+ L) J; \$ f9 V
;;[
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]]& \! E! g4 M5 X5 \4 X3 x2 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]
( H) v# v0 j8 @2 k" k& ecredibility-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
* r$ ^& E/ e. H: y1 s" z5 _neighbor-total0 Z( e4 j8 X* K7 L/ \, i3 b3 I& t8 k: G
;;
记录该turtle的邻居节点的数目) U8 c4 i8 @2 M5 n$ M: s
trade-time5 _4 \* T3 p( U! `
;;
当前发生交易的turtle的交易时间
6 o! k6 M5 f$ ?- k. Q$ f6 }appraise-give9 ^2 j- c8 d9 x8 j* [+ D0 Y
;;
当前发生交易时给出的评价
) w1 h2 m8 {. G$ y: @5 ^appraise-receive3 Y4 m3 a- a3 E/ n! }% s! S+ u/ W. ~
;;
当前发生交易时收到的评价8 c: W  {, g: i2 o0 N
appraise-time1 h, j! c1 _' y  w8 J  y
;;
当前发生交易时的评价时间" b. y) p: k1 L' D4 t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉) H7 Q: c* p2 p% I0 c: L# o. a3 M
trade-times-total
( m( Z6 e" n( ?;;
与当前turtle的交易总次数- l! P9 w" }) v2 _. h' p8 Z* i7 w
trade-money-total
0 l+ I4 [" |6 h0 P% V- u% b! T) t;;
与当前turtle的交易总金额! `* R, q+ v' D6 M1 P
local-reputation# t5 D5 k" ]. i
global-reputation
2 d4 N- o. a/ \+ ?  ^$ S9 m+ \: ncredibility0 e- @' n* l5 S1 V- t: ~4 e/ t% A8 G8 P
;;
评价可信度,每次交易后都需要更新) r. v4 P, M2 J6 U) V- ^
credibility-all2 B4 n+ o3 Q& e: U4 T
;;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
/ r4 m* ~1 |5 A+ Q7 @4 v! i5 B
7 @) m, i/ J1 S9 Z+ p;;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 y* j! H7 W1 o
credibility-one
! d* l' f+ b; m7 {# @1 G' m) S/ 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people
- ?, v$ ~6 {! B* S. y0 ]global-proportion
5 A& X7 v9 u5 q+ _! {0 I( kcustomer
0 |5 V6 ]8 X- v$ O+ }customer-no
7 n8 g0 X0 C; I) E7 Z4 ttrust-ok' x- [0 ^5 w$ c% t* p. `
trade-record-one-len;;trade-record-one的长度
+ k0 s" y1 g9 e( ]0 C( l! j+ a]; n1 ^! Q. M! a6 C9 e& o
  d0 @* N( S& h9 \4 g" X4 }3 Z
;;setup procedure- [* W5 L" b; G/ o. Y9 u# q: b5 R( w
  v" _& m% R- ?) ~( j
to setup
$ X; k9 y/ X+ l5 T3 O1 q! O* D: F% Y3 S! Y  p" g
ca
  j, G7 w! O3 j. y( w/ `5 G

$ B; ?3 W$ E- V7 w; F6 w5 ginitialize-settings
* e& o3 b' s4 s& b# C' \; n
, c+ k: x: m  r: E5 I0 G" G
crt people [setup-turtles]
% M& [% b5 S2 Q+ e* Q

' E1 C7 c* _- Dreset-timer

2 ~% _/ D' f- r2 X1 i# M  X/ l" n. ]! s2 ~+ h, S
poll-class

* x  S! f" {) t0 V7 F. F9 p
! b% `' U$ m! m' f/ E  W" [* N, [setup-plots
, E* L& K' o( F0 u; G4 _

/ h" {, S6 M3 L; B& P# j; I5 {2 Rdo-plots
3 |/ z" b6 S7 A9 f6 E+ U
end. z2 A3 d0 o* I1 E, o( M
  B. n4 ]+ \) L
to initialize-settings0 w4 Z- _4 A& j
8 a1 U. F( T# F/ w- r# x
set global-reputation-list []
1 c' o4 M/ N2 G; m( s
+ G# L0 r- W" A; Q3 ^
set credibility-list n-values people [0.5]

: b  c. P' u$ C2 i% G  X/ l+ e1 u) ~
set honest-service 0
; H! k  R; d; c
6 u* X+ v& f7 ]1 D2 g9 g: t
set unhonest-service 0

, t0 y; W3 C# D" g1 E+ y/ u1 z/ |$ |. w. A7 e. `
set oscillation 0

+ a, t$ |# b9 ]5 g- X* r. V! n6 M
( e) q$ q7 `% G; Pset rand-dynamic 0
& g4 W4 @: I0 @9 k, h# i2 e
end
( G- G' c: F: F) r- V1 d! C) N  g* X
to setup-turtles / _. b# m) r6 `4 E* U; I
set shape "person"6 w. J2 Z+ R! T
setxy random-xcor random-ycor
9 D8 `% m) S, S. iset trade-record-one []2 J6 K" i9 U* l7 E  ~8 l0 o

* e& P+ \* D& N3 q& V( Yset trade-record-all n-values people [(list (? + 1) 0 0)]
2 M9 w' J9 W: R% s# e
6 V1 a! w6 z4 E0 B0 d! L
set trade-record-current []# m3 I0 |1 c1 N8 @2 \; F4 }
set credibility-receive []# ?6 \: C8 o6 _! x5 T: {& r
set local-reputation 0.5
) \, T) J" {1 p$ O! X" S7 H( jset neighbor-total 0, a" }+ l3 t. O/ h
set trade-times-total 0+ z8 b3 a7 m# h: j7 X3 z
set trade-money-total 0; V. q4 }& ?; e
set customer nobody; l* H/ d) G3 g# u5 i
set credibility-all n-values people [creat-credibility]8 |) N2 p+ G: r6 ]5 C/ d. ^' H
set credibility n-values people [-1]
# k8 _: `& g' ^3 V$ k) u0 Bget-color
2 _0 m7 x5 k, N( k% s9 E  S& x

) g& n, r( H8 b: V- k& k( ^end
8 Z: ]) @* a- S+ X! B9 Z% l: M. H. A" P9 k, n# U( T
to-report creat-credibility9 K$ J5 L) _9 K9 T- i" [1 X
report n-values people [0.5]
) D7 f4 a% L) w" n  A* R, u* k, fend
7 b$ i6 `% o* p- F7 c0 D; b6 j7 J$ ~( c. `3 F7 R
to setup-plots( B  p% g1 j8 B, y# Q( |/ R' J' ]

$ Q$ }( e9 a; j* Zset xmax 30
. i+ n% g8 b8 ?& W* G  m- _! D9 U
- Q, m1 d  X, p
set ymax 1.0

3 s) l' {6 i9 J3 _& O* C# d- s" g. x; h% s
clear-all-plots
, \1 ~9 \9 v4 K+ B6 p
6 q% B$ D. w- o% _& ]$ I& B* J
setup-plot1

9 M1 |: n. R2 z/ l- N3 U
: ^8 [) W; n0 v0 f' csetup-plot2
2 \2 s2 ?% u5 M# [+ G5 ^- M
  Q1 V7 \* t/ N0 Y' n+ \
setup-plot3

0 a) p" O' L2 z/ `0 D2 r6 [4 v7 M, Fend9 d1 {. Z' o* k' ~5 P

( H- y; I2 f3 q) [: g8 W$ R7 ?5 S  K;;run time procedures
6 W1 d5 b2 Y+ V6 v& w! ~& v. z" t. J' X1 w4 k, r5 Q3 t" P
to go
4 Q  i7 s; ]7 x0 J+ ^9 J
3 N, F6 B: @; B. ~/ f2 V/ ^ask turtles [do-business]
$ I/ J5 A! l( T" ]; L" D
end# p9 l% _4 G9 [/ u; s

# S, |* C& b6 R9 O. S; Y% }to do-business
" B4 e. j& O1 U6 D& v
* Q3 V5 S) z+ e1 A$ N( B

  ?, X( q! q. hrt random 360
9 {3 J2 ^1 u  m% @" S
* H1 m( a! G0 p9 N0 [! q
fd 1

! j* S/ F( o: w' u( \, x: F
8 S% g( c/ T5 B% {$ C9 M2 p, e% iifelse(other turtles-here != nobody)[
# C* I4 T9 g) K* Z/ K4 p
$ `( O. T- s% v8 I- B8 K
set customer one-of other turtles-here

5 p1 }9 t1 K+ Z& [  P1 v3 v. s' _7 X. G0 s$ W; z
;; set [customer] of customer myself
5 q/ T+ }0 r- O  D1 j
. O7 d/ l% o  `) M+ T' y
set [trade-record-one] of self item (([who] of customer) - 1)
0 f! @% S  d  _6 [' p- U5 |$ v[trade-record-all]of self
' u8 d( r' C0 q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 W& E( Z6 _9 x( ^) _
0 e: T/ N2 i# v
set [trade-record-one] of customer item (([who] of self) - 1)7 Y2 F' H9 J* F& x  ^  P- m
[trade-record-all]of customer
9 r( D" z* W% ?, z" j; |# [
- z; z6 f( Q% |0 S  U& ~& e. \& Q
set [trade-record-one-len] of self length [trade-record-one] of self
# D! G! y+ p' M9 ^; l5 c' p  L
* g5 m4 F( w; ]0 v- J- Q
set trade-record-current( list (timer) (random money-upper-limit))

8 z# ~" `$ T7 f0 `- |
, a  @0 z. [- h- f/ @+ O2 u. Bask self [do-trust]
' p) \& n3 ^- b8 O7 j5 b;;
先求ij的信任度' D5 R8 e( n* n& k1 h% y5 @) Q: h8 c

4 Q2 \; }- }! r1 G* X  D9 S% D- Jif ([trust-ok] of self)7 t2 D8 L- q/ j
;;
根据ij的信任度来决定是否与j进行交易[3 x, j5 [  x& i
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 Q- Z4 N4 b8 O: q  f3 m3 A5 ]

( Q; f' i+ q% _( L$ r/ y6 T: \[
$ `; @& }% _3 X, S

) `" b5 ?/ K( m) {3 gdo-trade
- o; ~/ \  a# n0 E

  F! s: S) Q( l, H5 A4 eupdate-credibility-ijl
3 \# L- R7 b# @4 U

( h( J9 B4 l4 U1 L. p/ mupdate-credibility-list3 S8 `6 P. ?& U7 t5 S

2 y) k# g( I2 }
6 d+ ]/ J9 t& b" d: e4 t7 vupdate-global-reputation-list
( E; `# {! D3 g

5 e; q% @) R# d6 ~7 Ipoll-class
+ ^" h: f- r2 S2 H& Y
1 k1 d/ r* |9 S6 a4 O
get-color

' |7 z# z+ U1 R( K3 G7 _
, F# ~3 {* D% h3 r5 K, M& S( X]]
* E4 }) G4 t( \  ], `) {8 o0 Z" C+ c- a! j# t, y  E+ G( I3 M
;;
如果所得的信任度满足条件,则进行交易1 F2 A& v1 R' |& N

+ a& i+ y% R) S9 K[
* V* e( T; i( M, i( ~: B& u: a
8 D$ w3 h5 x! ?3 T. N% p
rt random 360
$ M. j* E+ _/ K! S  B6 k, \6 @
% S. D4 d3 D2 y4 U: v) L
fd 1

" s& u5 g  ]8 q2 E
0 e5 r% F8 O8 {1 Y+ e$ |' F]

* I" H) B) E! }$ U2 @5 l- V
/ ]& w5 |0 K/ ^7 X& |5 J) xend

" E7 N  @6 E3 g/ @1 i
6 o( d7 z/ C( b: d/ @( `. t$ bto do-trust
+ w: x0 n8 V/ l/ j5 xset trust-ok False- Q9 m! M$ {, ]

$ O$ e1 R* k" k1 M5 j4 m

  b% z) y& O: Q! G" a- Llet max-trade-times 03 S, s5 b$ ?# f# a- G2 X* X
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! u4 z' U3 z5 X: g: Wlet max-trade-money 0
! ?% w2 k+ {4 M0 @+ `! p9 w# X( ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 q- z$ h& e1 j, Qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 a) v1 m5 e3 I( \
6 b. i" o) s* w

2 ?: W- _7 p% r% e4 ]+ j$ nget-global-proportion
1 C/ U2 u0 H1 qlet trust-value
& D1 D6 j9 G1 `6 ]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)

$ }' G" v5 `* }6 b! D/ E. e/ P) w3 Xif(trust-value > trade-trust-value)7 X5 Q/ {# C  j: k$ a( H$ t* P: S
[set trust-ok true]
% a. @/ l5 j  S/ t4 o# U4 M; Gend8 Z# N4 R2 S# n- t3 y2 e
. X3 i- U5 J( J! S
to get-global-proportion' o4 Y7 v. D) D! X
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. G3 t; r) a/ I7 f% a4 V! |[set global-proportion 0]
7 _5 z6 \! O! d7 ?9 r7 s; s[let i 0. Y- k- x" a7 X1 c) _
let sum-money 01 O1 n! g2 O! ~+ V+ I" X7 n
while[ i < people]
& B0 I* {  c* ]! P- }" ~/ M4 _[' p, M4 O" h2 z7 k- Y" x0 L
if( length (item i0 a' r0 X; P' [, g
[trade-record-all] of customer) > 3 )
( `+ B! Y0 u: m  d: G8 s( ]: Q
[$ |) ?1 S& U) L/ `2 _& W
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& K0 d2 _6 S: f& L
]
, z0 q0 x' K2 q9 v; f( c]8 E1 Z; Q. r7 I: g9 }0 n
let j 0* |+ M8 m( Z; a. b6 ^) `; Z
let note 0& @# I& y, l1 y. m1 g
while[ j < people]
3 {/ {9 n# ?0 C, I' ^- r[
/ C) ^! _9 Z& X" |' @if( length (item i3 V+ T. ?% n6 {& t, W
[trade-record-all] of customer) > 3 )
& z/ B  H2 |4 v! I% a
[! A) u" [5 x+ D' \5 G8 \# |- h5 n
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 x/ O7 y5 {# E0 n" O- z# K7 V% H[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- I2 g' t: C0 Z' V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" S+ b5 s) J7 u) L], w  Z% H' M9 _$ v, B$ x
]# V% O5 S- z1 }/ U
set global-proportion note
8 K7 n: a" n8 S3 f# s9 W]
- w* ?+ u' K3 i" t5 w4 v2 d4 send: p) F% b5 J3 Z9 y2 `1 J- q2 }

0 y8 j- K4 J6 z1 Oto do-trade$ n: W0 @5 l- _4 P
;;
这个过程实际上是给双方作出评价的过程* E6 |5 F! C) O. a3 h: ^% W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' _1 _5 ~' T) p( R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  _" J+ H9 Y9 s' @set trade-record-current lput(timer) trade-record-current
7 x2 ~0 t; y5 O" {: v;;
评价时间6 L9 v+ Q( F" k5 b- u* F' A$ @2 `# R
ask myself [% @6 y4 f/ D4 l
update-local-reputation$ K( ]+ m6 e: ]( Z
set trade-record-current lput([local-reputation] of myself) trade-record-current  W. a. B4 W+ @5 O
]+ x9 `: Y# `( D+ `5 o# A" r
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 z0 r" Y# h9 U+ P4 j5 O, ~1 t
;;
将此次交易的记录加入到trade-record-one
" ~2 Y+ _5 ]0 @: u- a% {set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 Q+ P! U, O& H* u! Clet note (item 2 trade-record-current )6 u$ z1 B( _$ I7 _8 ^6 U0 m0 _
set trade-record-current, x$ \2 |2 w! m5 s. q/ ]) P* x
(replace-item 2 trade-record-current (item 3 trade-record-current))
* Y7 s* m& M# ?
set trade-record-current8 Z7 Q" J, y8 M8 x, a* B
(replace-item 3 trade-record-current note)
( j# k9 A7 Q/ v6 ^4 r+ e
* F3 o  Q" t) `, V  N% _3 \) v

$ C1 p: M: M" t+ l; U( _3 bask customer [; k% A- a" {) x0 m
update-local-reputation
% |0 ]: X" e4 U% D1 y* fset trade-record-current
, j; s, u  s, V/ F(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 f4 b/ q" _7 f  X% S
]/ V  H) G2 ~8 K* Q$ v" S, F

) h3 D' ^6 y! ~3 o. e

2 n9 m5 E3 R5 h: p& Rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 R1 |9 d  C, D! j) G. I+ f* ?5 o

2 c0 f/ i2 L1 f7 g2 _( nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  ?4 J6 B2 P5 R' p" u% S;;
将此次交易的记录加入到customertrade-record-all' Q; ~5 o% D8 {- f
end3 L; L- `0 Z# f3 v0 S  }7 H  x
9 `0 V% F2 l+ I$ K
to update-local-reputation; U( h3 ?' R4 J7 \. Q5 S
set [trade-record-one-len] of myself length [trade-record-one] of myself
- s, q  l9 S: M* x  X  I, R  W% W7 a4 V* M

# B# e# Y* {+ i, t: s1 ];;if [trade-record-one-len] of myself > 3

7 y% E4 @' d3 k+ U. Wupdate-neighbor-total5 P" E. B( g# o  K
;;
更新邻居节点的数目,在此进行
, Q, E* ^2 ~6 x* m* O* u' e' C9 Y" klet i 3
1 x3 |- x$ J! p- d% h$ e- |: {let sum-time 0/ M; `# S8 [5 ?+ r0 I3 t& ^2 X
while[i < [trade-record-one-len] of myself]
+ }4 w3 T7 ?8 `, u0 u4 y* C[- |0 ?7 I5 E8 j. J
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 ^2 A, X- I: G% ?, J& x' N
set i$ N- B$ t1 X9 I" E* G8 _
( i + 1)
$ ?( v) S% f. ]( d
]2 f3 G: B, x" V# U- h  D5 F
let j 3- P4 K1 S6 M2 a$ A3 ]
let sum-money 0
! n: }5 S) s" I0 H, c2 ~while[j < [trade-record-one-len] of myself]
: d4 t, E& o* N: Z* m[
! z, z7 G6 I9 X& p- H8 N% t6 {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)3 ^8 Y- L" p1 `6 \3 ~) {
set j5 B0 _6 z$ t, i$ I7 s. v) D: n& ^
( j + 1)
2 \( C3 u) d  z3 G9 x
]
7 G' w3 C% F' h. Z' ]let k 3
, ]" }  D: b& t1 a- _let power 0+ R/ e7 x' \& D
let local 0
6 ^- O. u' l6 A; F/ ?while [k <[trade-record-one-len] of myself]0 W6 q, x$ N( \. j$ I0 _. p8 p
[0 L7 e- f! h+ k* V
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 O! G: X! L3 t6 d. P: _: H
set k (k + 1)
3 }( S0 V$ X. Z6 J1 f  u* u  P; A]- ^- u0 I' K, @# Q9 X: X
set [local-reputation] of myself (local); o: ^- S$ J/ T0 |/ c/ x
end
" W8 r# b( |1 g# `: R$ u. d9 M0 r- d" H
to update-neighbor-total
) M- C$ D6 r% Q. i* Z6 W
, t- j" }$ g9 y, \, z7 \! E! a% Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 f) m/ V' g! b# a# X8 m: s4 Q

2 U8 F: h3 |. k" ?* k
8 C, x- Z: Z0 B$ ~6 Y: N0 H
end' x* V" k$ h' @& f! S6 Q/ A. X, `

$ I6 D+ @$ q# ^: M8 e5 n; c2 _to update-credibility-ijl & j/ Z! J: Q) H- n9 n2 Q1 x

  F) Y* Z' b% N* ]2 T;;
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。
6 w9 B+ Y  G& j: H1 Z8 ~. B% Olet l 0+ J- L( m5 ]3 Y6 q) L) r, c
while[ l < people ]2 O5 |* o6 s1 R- `6 k% {* K5 J
;;
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
! c9 \* Y3 h) M2 Z[. b# s( l6 g. y" F0 o0 y: ~
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( s0 R3 P; R+ G; ~if (trade-record-one-j-l-len > 3)
0 X/ `: r' W* Y9 g3 w  B; [; ]4 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
; r. o/ c. W- j2 G3 b- Hlet i 3$ ]  _* p! z, Q) L) x9 L
let sum-time 0
" _: p0 g" a/ N' S+ `while[i < trade-record-one-len]6 z9 {# d0 K% ~2 M
[  F0 Q3 [2 W" F% d
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% C# s% |# Y3 _/ d+ @set i' u' h0 K( x% r; ?1 j5 B
( i + 1)
4 t* B* {: b5 T$ P$ j4 |  h: K
]% L5 p4 J" t# _! p# V# V
let credibility-i-j-l 0. ?% ?, J0 d* M, d
;;i
评价(jjl的评价)5 I( W" H8 A' h! y) c+ O% C
let j 3& [% P8 m" Q! q3 g
let k 4. x! z' \/ S$ c$ }- r: l
while[j < trade-record-one-len]0 x& y" K8 D/ a: X0 r" T+ K
[& Y- V- n) {; ~! y9 \' Z3 c: q) }- S5 G
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/ Q' Z3 G7 ?' B: i  `7 f& R
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)
" d& h' A4 Q5 q% @* i' Cset j
- g* p9 t+ V9 _% U( j + 1)

( G7 c" f5 d+ z1 M; P# I1 ~]: o- F. s! @; n% e( w9 a
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 ))
  V' V& p: c0 F. M+ w3 _6 `4 i, ^% @. t6 U2 C0 G% m+ a2 g

2 m# n1 g* Y9 a4 e6 O7 J6 |let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; P; A- G# a2 T+ j; D1 j;;
及时更新il的评价质量的评价
( b; ~7 {! C+ h5 K8 o% c2 u5 h1 vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  w+ i+ f- H" h1 Z
set l (l + 1)
3 n4 C/ _1 z1 B* F]
0 C/ X- W; @# j3 P3 N* jend
+ y! b- I3 G& B$ X3 p0 l* D% a7 j& R& O0 f  Z# b) h
to update-credibility-list
* x- J1 S1 G6 Q8 ^let i 0
$ r) N* q$ ~; \% T) d; ewhile[i < people]" f$ A8 y( j/ T8 a+ e/ r
[2 f4 v5 z+ [5 J3 w6 M7 p
let j 06 l* U% j  q! E5 j! b
let note 06 p8 U- x9 K3 D
let k 0
2 n5 a3 O) g7 d' P" f6 i9 v) ?;;
计作出过评价的邻居节点的数目% N% c4 V) D; m+ h
while[j < people]
8 V8 n( y) A( J! q% L9 [[3 f6 D" H( l1 w8 @
if (item j( [credibility] of turtle (i + 1)) != -1)
0 s; T! ^" d; F* v;;
判断是否给本turtle的评价质量做出过评价的节点
: J" m. l' j, W6 [) j/ Z$ I( _[set note (note + item j ([credibility]of turtle (i + 1)))- @) J2 o. d( k$ k# J  S
;;*(exp (-(people - 2)))/(people - 2))]

: c; k- M  J5 {+ l( m' bset k (k + 1)5 R0 Z$ K" Z& [* y) n& U+ k, J
]' \' ?: M  M6 s6 V4 [' u
set j (j + 1)
# r, S+ e3 R$ X& {7 T2 |$ B2 H]4 j) ^+ C: n4 d% c. k  l4 _$ T
set note (note *(exp (- (1 / k)))/ k)
# u! a# h- E0 ]* P+ pset credibility-list (replace-item i credibility-list note)
+ h* @/ Y/ I" `% J7 c) M, E# p. [set i (i + 1)0 ]) J1 Y( g" d' p: c# k. `" k* \
]
5 A9 P7 j" C/ s" Wend% i# B, D# }. V* `* k

: e* H, q  i5 _2 D! T$ V% Uto update-global-reputation-list
+ j6 d" x$ ^8 p: {8 F" Glet j 0
# n  v- X+ R' v$ X# @" d* Dwhile[j < people]
; [8 R3 n) Z% ^& J[
/ o( f4 z) |6 _' Ylet new 0
* x# m+ x! o* r7 n5 q4 A;;
暂存新的一个全局声誉
/ }6 Q' `% T, y- B6 S$ Jlet i 0* b1 `8 W! b+ C& r1 ^
let sum-money 02 `6 E# S$ X" ], [1 K
let credibility-money 0
# A" H' q; t3 j8 U: `while [i < people]
2 E3 J' \8 p0 B[
& c& M+ C! D8 d2 l& Z6 Q! o# v! L5 b/ lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 B) a4 t* p/ }, P/ N8 f6 Pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& n7 C* t  @4 N* A5 x# A
set i (i + 1)
( Y! @0 k8 U' \- H( E& v]
: {. \) K  l( ?8 Olet k 0
/ r- D' J: k; s8 mlet new1 0
- j4 f5 r% ?2 e5 pwhile [k < people]
- l& C+ g6 {2 v% [- n[' m* Q  [9 C* F. c
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)
) Y9 m5 A( q! H; jset k (k + 1)
' g5 `3 _! z  ?! x* U% \3 R]
! N+ i0 m% i- c: Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , a: W( n' Y9 Y
set global-reputation-list (replace-item j global-reputation-list new)" L& K* r" S) ?( y+ I
set j (j + 1)
6 _7 m8 d0 m5 M2 i* O- W5 u1 C' a]
3 D( X9 o. }$ w' B) [* {( m$ r+ lend1 _* d' r* B8 i% G

' w1 d2 [: d& J' {8 x( K7 ~! `- l6 g( Q' g* p' x: C

$ \- B7 k/ O- f, wto get-color
/ `* b% t: \# f9 ]) [0 ?. ~; t7 y9 F  t6 P; f
set color blue
# D# t6 m7 j1 h: k7 d; E
end/ O& [3 z; a; X7 d& Q

7 Q  S2 v6 b9 f9 wto poll-class- m- W% V6 a- v3 y/ R6 E$ h
end" e) L  y; ^! ^9 ^
- v1 A7 z5 Q  y# Q
to setup-plot12 O8 l$ A) Z/ M2 a7 ~- Q0 Y

& m( Z8 _0 Q$ q/ V  xset-current-plot "Trends-of-Local-reputation"
# ^% A$ x3 v" c2 C: s8 j

6 ~% Y: X$ h  \$ Mset-plot-x-range 0 xmax

9 Q; r/ f& R* f3 R; V& D0 N8 M3 P! V5 ^
set-plot-y-range 0.0 ymax

3 l# o( n$ Q4 Q* Pend
# o2 l/ f. F9 K& a+ m3 j+ u* X9 [0 r8 v: o5 J8 H0 G, e. _% j
to setup-plot2/ U8 [; j2 _0 O! T( J7 K

2 X' s* a% {$ {' [" E6 |set-current-plot "Trends-of-global-reputation"

. N8 V. R6 r6 d  T: c+ j$ _2 K+ N2 q* V) S
set-plot-x-range 0 xmax
6 A/ o  |' w( k3 s2 O- ~5 r
# {8 n! l0 d: o+ Q9 \  Z
set-plot-y-range 0.0 ymax

- T  [5 v+ ~0 q1 r% o$ s( nend' G# `" Z& o2 |  G. \
% y$ X. i0 w4 A; e' z+ L6 ^1 ~
to setup-plot3
1 Q  p$ C4 V! U; F3 f( T9 \
% o2 o5 b) T$ C9 D( V' Zset-current-plot "Trends-of-credibility"
1 a! G/ m0 c( j8 {8 P6 s- A: y, X

8 s. Z8 ^6 r2 T; Gset-plot-x-range 0 xmax

# T0 I/ e% v& [' H
6 f7 E1 z) T- C& D$ P& U2 Rset-plot-y-range 0.0 ymax

, ~2 K3 f$ C; M# E" q# M: yend. K% ^* f* \+ F2 g1 O% U' l% W# k1 k

2 H, k+ c( ~0 u$ f3 ~; E/ ]( ]to do-plots
* h" D3 z, N$ a; }set-current-plot "Trends-of-Local-reputation"
  c6 k+ y7 d) ^% \6 j1 `. Rset-current-plot-pen "Honest service"+ r9 z5 t5 E5 ]4 i/ @6 I" z
end
" T4 u( u" s' ~3 `# H
: k% ]7 F( H" `[ 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.
9 p, q+ t# d  I' ^  E; O
2 r4 a( e. ?- @& F  ^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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