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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:9 |1 R6 x& P5 \: ^) V- u
to do-business
4 V; K6 F# k* X7 H" k rt random 3601 B- H" _" f3 t5 w$ Q7 N
fd 1: ~* U( L. \( G4 E4 R: y4 `3 L7 e
ifelse(other turtles-here != nobody)[
4 z0 W3 \4 d* `+ r4 S1 I. h   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.
3 M) ~9 M; b6 j/ W7 ]   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) B* T! ^. _: A5 f, y0 h, ]1 c* q! I- K   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 ]$ G# u0 R0 K* N" y5 h  F+ Z   set [trade-record-one-len] of self length [trade-record-one] of self
# K6 `- ?6 _, H3 ]* f   set trade-record-current( list (timer) (random money-upper-limit))
9 h3 {6 z! n: R8 [8 W1 y
9 L8 R+ C: t( Z4 e问题的提示如下:1 z5 E5 i0 g8 g9 P  g

& F* Q3 i1 \/ K" }+ G. ~7 kerror while turtle 50 running OF in procedure DO-BUSINESS
* i% N6 q! D3 T) {4 O0 `6 d7 s, n  called by procedure GO0 q+ W4 \: r5 \  A$ C( g# W
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ }9 N4 B: U2 L- B! [) ~' {
(halted running of go)
& Y5 z) T2 G) U
) x' x0 H0 H# c$ X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~~
2 G! R4 I' U* ~' T* a5 Z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
0 _8 o4 x9 h" o: P- Gglobals[
3 R7 x* z& a2 @) wxmax
" [, q4 _  o8 s( p, C2 `" uymax$ [" _% R' N3 p/ x5 a
global-reputation-list9 y) H# i5 X; \8 o. }) A
7 G* R1 J1 G; w  l( ?9 l  q
;;
每一个turtle的全局声誉都存在此LIST
  D; \6 c" k5 e: `6 M% r. I$ ocredibility-list# V6 c% W* S) s( w! Z  D
;;
每一个turtle的评价可信度+ @# v2 x$ ?- ]6 @( e1 H
honest-service
% b+ t) i3 X1 `' i5 U4 cunhonest-service6 }( J' G; V* M% ^+ j& W
oscillation
, E% J( e$ Q- o* C5 C/ I  \2 nrand-dynamic
; W3 Z. Z' d/ N' P1 D8 C]# G" o7 c% s  G
8 V# D& Y, F% I
turtles-own[
6 E5 \- D2 I# ?6 ?- `( O3 G; Wtrade-record-all
, Y0 a9 i7 x" l, d" x/ L; b4 `3 E;;a list of lists,
trade-record-one组成( f$ o$ O  U" n! U4 F
trade-record-one
- U  _% q; C, k" K) ?7 H' C( V% |;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
6 v" d# T) W6 V+ Y* v' t7 @' A
3 B& @) G4 J& t4 [: l! ]) }6 I;;[
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]]: b6 W! \$ V5 v# V0 I7 }$ t: Z9 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]
+ {. P  M1 M! l  Y% R; i1 x2 G7 |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, l1 T# W7 ^: D1 C
neighbor-total8 n2 h; N3 G. u; q2 `$ ~
;;
记录该turtle的邻居节点的数目* ?7 C0 o0 @; C' H* V  G
trade-time  j: U6 P8 h$ n! A. V
;;
当前发生交易的turtle的交易时间- h/ V. {% Y  O1 H3 ^: I
appraise-give
2 t# ~* b# ~4 g4 Q;;
当前发生交易时给出的评价
* J2 p/ [$ {' b5 Happraise-receive
1 X" b% _  i$ t: F! S" T! K4 S;;
当前发生交易时收到的评价; ^4 x7 y: H0 T
appraise-time( Z  C  N& P2 z9 d$ U! R5 `* C
;;
当前发生交易时的评价时间9 u1 L4 k) v$ L6 y, p1 \8 z* _/ s
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
! w7 z/ c( k0 v' B' E9 q: Mtrade-times-total
% o. M; [) l5 E, G4 n. Y2 l; V;;
与当前turtle的交易总次数2 x" o7 R  @0 ~- ?: C; W
trade-money-total, Z5 k, W- Z' u$ v) x% T7 [4 c
;;
与当前turtle的交易总金额
- K2 S3 [" E9 W: [5 n. M" R6 q( A$ Alocal-reputation
& c, v+ ?5 [, M9 T6 P8 p& }global-reputation& \5 @. G- P0 @" F
credibility
  d. O# w5 v" p" m! q1 f. t;;
评价可信度,每次交易后都需要更新
! I% w0 t" s% m* n% Lcredibility-all
, B8 i, r0 q7 ?0 x& a+ f. [;;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. G$ J' n1 a! O' S2 [& {/ [: r1 |
& ^! x6 N8 w$ Y8 A: o' k
;;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  T" q) k1 H+ w5 l- V
credibility-one9 ]: ^! E6 A4 \8 l
;;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
, ]( e# }1 l; [0 w: X1 `" Jglobal-proportion3 h& |" G7 g, @% F0 ?0 f! g
customer
4 z5 q3 M+ A$ [3 \customer-no
/ o6 q" d( S( }trust-ok
2 B" w" j% y# s/ o- M3 s  ltrade-record-one-len;;trade-record-one的长度
' V, z2 S$ v. L]
; J4 P% C$ K; U( {# a1 d2 S( A) ?' k- W' Z7 g  q
;;setup procedure
( W, a) H+ x3 [1 F1 g( Z& L0 W! X3 v! D- r9 A  m. f* @
to setup$ ^, q- P: G' @7 p7 K' D7 c
) t/ k$ F# Q, D* Q3 w6 B7 j
ca
2 s# S2 r# A" U; U( {4 Z( k0 U9 v

8 {* ^+ R9 _, |4 M8 J1 L: @6 Zinitialize-settings

# I& y9 U8 ^# P2 u* C  X8 d
! `8 h# a! Y) z& G8 o  {crt people [setup-turtles]
$ ]6 N- {6 t% f. P, C2 m+ }/ O

9 C! r! [5 [0 k: l  i+ freset-timer
: b8 m0 ?* Z3 b4 [5 W

* q& z: F# o2 L# J- upoll-class

) y8 a* l! Y0 [0 y0 v
9 t- A: {+ l6 s2 @setup-plots

& P9 O. X& Y8 G7 v' Y! Z) u+ L6 g) X$ v; ]6 i" s
do-plots
# \7 E0 _4 ]3 m2 j, S
end$ _5 X7 @9 B* F

) I% x9 T4 T1 I6 l; p1 F1 \* \to initialize-settings
5 q) d6 I. V* l, w. |  P& x  A
) q, A, j9 S* Z! V' B! \/ ^9 r4 Hset global-reputation-list []
( W/ J8 x! ?/ J- F- ?/ B5 k9 x
4 ^2 ^6 J" x+ `% k) R
set credibility-list n-values people [0.5]
1 j0 t- \: U  t" t% j# T3 h
$ M+ y: q/ _7 A4 `
set honest-service 0
* j% c6 P$ j/ f' S) F3 L1 w; C
' I& J3 P% S9 E" b8 D# }" G7 R9 t! y
set unhonest-service 0

& F2 N  i4 k0 ~3 ]' k1 o* Q  A" A0 H4 ~: x/ w
set oscillation 0

0 U7 t& u" m) b' B" ~5 `
# u6 C8 w" L6 T  ~( Iset rand-dynamic 0
. ^& C& r  d' \2 N7 a: ~
end2 T: E1 I$ |+ @  M7 P
1 A9 W: B1 }0 M6 p
to setup-turtles . o6 g1 N- \9 z3 @: i- z, F; I
set shape "person"9 C% f& P: P) q6 [7 {2 W+ F
setxy random-xcor random-ycor
: N* d4 T1 V2 V$ A" |3 Nset trade-record-one []' ?  _+ i& n2 p, b7 C  L) Z. [5 p
, q% [- ?4 Z4 O" m7 p6 l
set trade-record-all n-values people [(list (? + 1) 0 0)]
& Z* l5 k" u0 d$ t2 Q3 U- g+ {
: Y- R/ p1 W: h
set trade-record-current []
$ s5 U4 S: R5 s. s9 v+ ^3 H' Aset credibility-receive []
$ z8 @! P7 f7 y  u8 t( N7 sset local-reputation 0.5
; K/ w6 d% S+ L0 B3 tset neighbor-total 0
# D& N. ~: R( f2 }4 f  [set trade-times-total 0
+ s9 F7 M; ?7 c/ M- s1 vset trade-money-total 0+ E3 e% b5 n# a1 z# d4 J1 l
set customer nobody; h# b% L# [7 g0 b
set credibility-all n-values people [creat-credibility]
; p  f; u' u4 C/ e! Eset credibility n-values people [-1]
# ]) A) U/ ~6 Y8 ]% _get-color
' D5 ]8 }1 p0 X

3 C$ z$ L; i( I8 Hend
, a/ U. R, R8 M! U! C3 e8 @
, e& T, Z; u( o3 Y4 B: cto-report creat-credibility
- K9 O# r% T1 @$ c% z9 z; ?; h/ |" ireport n-values people [0.5]
- ]2 c3 p3 |9 I; |- E, {: tend
; o9 S, a: o( \7 D6 v6 Y
& G: h6 \" `. v. b$ h! A' Cto setup-plots2 r  g4 h3 D9 X; S* G& A( u
' [2 J- P4 j2 D) H
set xmax 30

; o9 j+ s! R! z8 Z4 Y
" A" e" n4 Z: {, oset ymax 1.0
- P+ d3 b8 G7 R8 k' c3 e
# G. E) l8 N* |/ C+ b/ h8 b
clear-all-plots
2 K/ H8 j' k4 {8 x+ C
1 B  _$ M9 s* o+ r  ]
setup-plot1
( J5 D4 m' K, P# m" m5 }  j
" j! ]- G  o+ l
setup-plot2
% }2 e' ?2 T' C7 s

' o' n9 E* n! q: b' Gsetup-plot3

9 N7 A. R" \, o+ W6 E- o6 |# i3 Mend0 m0 v* d+ S8 z1 X
7 G* O) E1 W$ y  Q- d* G8 G
;;run time procedures
: c' j. f9 z+ z
6 k6 _9 J* Q+ _+ ], Z5 w/ _4 Ato go
; }3 C. T+ U5 R' ~) T, e& Y$ X* @! }, ?
ask turtles [do-business]
/ U$ o8 x! F" M1 X; @& C( G
end
" B' y9 p* `. ^/ p
) f7 e9 q. g1 I* Z& j  Eto do-business
; H( t) Z8 l4 q" L: @

4 r8 K9 g( a! }4 F5 [& y! b7 _& v2 x6 d. s. @' P
rt random 360
& J9 |# M9 b' @$ _1 ?

$ r6 M- H/ A1 yfd 1

* S0 ?4 J$ R, O: v5 K6 ^5 Z7 ^7 L5 K; [2 g$ z# t. Z
ifelse(other turtles-here != nobody)[

1 ?  R$ x  F# A# I3 Z7 G1 n7 e5 F4 U4 t, R/ t) ]+ F1 J# C
set customer one-of other turtles-here

0 v, B" ?4 c8 }
; Q, [; r1 Z  L# [;; set [customer] of customer myself
' Q8 {: _- P+ b! B9 E4 z$ d
0 w- k6 d" E7 X0 I7 D1 R
set [trade-record-one] of self item (([who] of customer) - 1)
  b! V6 C* k, `; _[trade-record-all]of self, Y4 v$ i/ Z; |
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  Z: d2 h0 c/ i2 n4 l
% R! E0 d+ m6 Pset [trade-record-one] of customer item (([who] of self) - 1)" I+ W( z: u1 V% ~; Y3 H" j
[trade-record-all]of customer

: N: |3 X  V4 l0 E3 z( v. ~: }( o% j: h8 T2 e1 C
set [trade-record-one-len] of self length [trade-record-one] of self
9 g! v" O# w6 C" _6 q7 D

0 w: {6 H: K: F% G$ U  Tset trade-record-current( list (timer) (random money-upper-limit))
8 q) v1 M8 m8 q3 i; X. g2 U

7 w1 g" u; `% t: w4 z0 w, l' Kask self [do-trust]
8 C+ ~8 v& e2 B9 [; _;;
先求ij的信任度
0 M5 }0 W' @0 O0 z; Q4 ~* p, H2 Q( `2 ~1 b  m1 n
if ([trust-ok] of self)
& e1 v2 e9 L# L8 F8 |;;
根据ij的信任度来决定是否与j进行交易[
6 N5 |# X' m( X6 M+ G5 fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  `) A+ S- p+ u) X- {0 U4 C: h$ X
4 t4 c4 U& U8 v1 `[

. K% }8 ]4 a: y6 M' G( \
0 i' B3 C4 m/ D% Pdo-trade

8 C" [8 ]3 W2 A5 {; T) u3 i" H5 o# V; d# R$ L7 k! R& O
update-credibility-ijl
1 A" e; t! n+ W: e) ?" G- o; ?' k! q
: A0 r, B9 ?4 g0 j0 K
update-credibility-list
3 x8 J: T! U/ \6 p6 p0 C

% j: ]/ e* O  j+ v# ~5 O# p$ ?# e3 W) a  i
update-global-reputation-list
* ~2 L/ @5 [4 F$ t. X
7 u* a, ~! Z0 [4 ?+ U( [
poll-class
9 h0 l7 O' d7 _& O6 e+ t5 }

0 b0 I( ]2 [0 ?  r7 I: x- v. Mget-color
/ s- ^5 e5 ~+ Y, m/ m
. v8 h) Y4 k: n2 `) _  a  h/ h1 l
]]
7 t. I6 J9 r# @1 B9 D! P
; z( q; w! P9 y) B9 g;;
如果所得的信任度满足条件,则进行交易% Z, j: K1 \8 N' M  N
. H6 [1 \7 D( \+ \
[
: S; a" }1 o! J; H2 O& H

1 B4 {0 }. r0 ~# v. `; |rt random 360

! u0 y+ D* I  U. {0 Q8 T6 E# ]' m2 d; d
fd 1

$ K8 _* }# |3 S: ^. z6 M
/ A' g/ \  W  C: }3 }6 j" R]
% B: a) @! u4 s0 F- m3 h

2 m% c: N1 ^2 W3 Eend
2 m, ?9 D3 `5 ^( R0 [
' K6 u! t+ ]" L
to do-trust
$ E% \% T" e' W( w6 L& pset trust-ok False; ^) z, x# J' K8 }$ R. f
1 z& p# z: S1 F* K

6 p& E$ j; {# |1 }let max-trade-times 0" k; q+ i/ [4 f) H% s  F: s/ V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) |+ F/ a7 x0 Z2 Tlet max-trade-money 0% ]8 f  @4 J! W" M& @# b; Q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 ?6 G. \3 S# {1 Q. i9 C+ y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 ]. N1 P9 B, s5 `2 H' ~
' G( l( b: I4 N+ V4 X4 C" z
3 O7 y$ [. w6 j+ H
get-global-proportion: H$ L+ A1 k3 A( m
let trust-value
1 G+ M: V" r, n2 {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)

, s) Y( X: Z1 ]* M6 o; hif(trust-value > trade-trust-value)( c! |8 }5 L8 A5 S6 _" f  |) v
[set trust-ok true]
) l! F/ ]: X7 _* @end# ^* k5 F: e3 [
2 ?8 n/ e; Y0 u# v) j% x
to get-global-proportion9 j- ~  l% ?1 N
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  J. A' ~* F4 M2 i[set global-proportion 0]
  _7 m: P& [, P[let i 02 R) X" G( k( E6 C% P, U
let sum-money 04 {2 u# ~2 R8 d4 Q4 a
while[ i < people]6 Z" p/ u6 n$ I0 R
[2 @  ~6 ]0 o; R4 l" E
if( length (item i
7 M6 I5 A/ l2 ~5 X4 c3 A7 H[trade-record-all] of customer) > 3 )
9 ?4 d( b, u" S1 C, K" R
[( F: T" C+ B8 ^5 C+ I# I7 `
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  ]( H0 F2 X! \+ }6 g/ b]; W2 _4 ]+ v+ r% O' I
]  j& a+ L* a1 O; D
let j 0
) [- s! S7 Q+ J$ a+ clet note 0
, V" [- Y  l, f& Nwhile[ j < people]
( u3 k7 B( [" [% k& W6 H[. k8 u; [. H9 K) v
if( length (item i) |' B% f# |- g3 F' }) o- u
[trade-record-all] of customer) > 3 )
% t6 w& _- s3 ~( @
[9 q$ v2 a& {& v1 x. F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 J: B& ~% m& \1 X* @
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ a: |8 e" K, z4 b" k& ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  e  g, `+ Y4 K2 H' I4 \' l]
$ j8 |! o; @0 O' R3 {) V]. b. ]$ Z( ^# |) E  u* j
set global-proportion note
+ @8 R: D/ Z# O+ j]
  ]: u/ _& V0 {' q% Oend
) M0 @# x  q* J, `
) `8 _& Q+ O& F" W  q5 Dto do-trade
; ~  e) Q, E# c;;
这个过程实际上是给双方作出评价的过程; l! Q; ]' o# F5 z! C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: t$ H% H5 Q" H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! \0 q/ U% A5 Y8 j# V+ A; v9 Kset trade-record-current lput(timer) trade-record-current; i8 Z6 l  m2 k% t9 e
;;
评价时间
: l+ c2 E& R- {6 n3 Hask myself [
( c; D3 }( ?. p* y1 I9 Qupdate-local-reputation$ W* R2 ~! O7 j, z/ |7 i
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 Y2 _0 [5 {. \" D. z8 }5 M' \]5 M2 h/ ^# k. y4 r- J# Z- U
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( z( X  _  Z8 T2 J! Z) |;;
将此次交易的记录加入到trade-record-one
: V2 B" P1 P" @* K& j9 tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- S' A" z, G/ {* O: y9 z# b1 p
let note (item 2 trade-record-current )
" X7 Z; }+ E& x6 J5 o+ Nset trade-record-current4 E6 K1 \6 B) ~+ l, B
(replace-item 2 trade-record-current (item 3 trade-record-current))

% l* J7 c: {7 s! T3 z1 cset trade-record-current
% i, H: {& W3 ^( |6 W(replace-item 3 trade-record-current note)- w+ f: r/ X6 g

& Y4 E* m. z, m8 W* d% {

0 Z$ E& D5 d4 ]3 @ask customer [
" p. |7 u1 |% v1 F9 l. @! n9 u; [update-local-reputation/ s" v) S- e/ ^: g% ^* v" l; S
set trade-record-current
" q1 q8 a- y* R5 M% R) ~) f" j; _(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% |: L: W0 v# C
]
) f  p: x  G* l0 n- U  W
  O; \. i5 h# a, v0 H* K8 C
' ~5 W# Y8 o& G  t4 N) [# ?
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 J0 \2 F# M  d% a: e" |! G

) i, E$ }. b) ?' @" P& pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ c$ B- ^+ Q+ F
;;
将此次交易的记录加入到customertrade-record-all9 |4 q7 P# o# @2 _$ n6 S4 o
end
! r& f7 [# [& b( ^. r$ k
, d& b/ b8 j6 _to update-local-reputation
% L% K! T1 [0 k4 dset [trade-record-one-len] of myself length [trade-record-one] of myself
& t1 P" W+ x( {- C
  u: K2 Y- T) a% n
( t" n9 x0 Q3 C2 L2 e6 E* h* ~2 M;;if [trade-record-one-len] of myself > 3

/ b) Q5 u6 m' R3 `update-neighbor-total* T8 ?, k5 S. p1 D- I1 a
;;
更新邻居节点的数目,在此进行
2 W) g# R  P6 o. Glet i 3; m, N3 m! [% N/ {% q6 X  u
let sum-time 0( [" a1 O0 o# Q. d/ x
while[i < [trade-record-one-len] of myself]7 w) Z' e: [8 A. y1 y4 F
[" B; ^2 `/ Q( m
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). V& _* H1 z9 o2 r& {
set i
! J' X8 l, K& @4 w( e6 K4 H( i + 1)

# X# k. e* g! E5 a]
/ Q$ ^" D% V4 G! F$ W8 Clet j 3
" N6 _& K. e' Flet sum-money 0  V3 A- U- b! x" o
while[j < [trade-record-one-len] of myself]
6 T1 e' U% O& _5 V( d, [% U# A[
, T$ C2 c5 i" n' V0 X4 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)
, n# T" F: }7 ~; ]6 M( H+ sset j- [! K& h/ o; ?* v
( j + 1)
3 U, w0 X# Q& r& Y0 {
]% [' k4 j5 f' ^- l. h- x& m
let k 3. S1 Q3 g2 P2 v# W
let power 0
4 u- g8 p2 A( }# r# }* ^+ Ylet local 0
+ E: y0 L, h6 r% N0 F) F! r5 }while [k <[trade-record-one-len] of myself]
; ]  @2 C( J) n6 |5 ^[5 r5 t! L, Z$ ?/ E
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)
3 M& V9 L) s6 V" o) Tset k (k + 1)
; Y, W+ R5 U! l6 O% B]
+ d7 a2 w+ b: y# Q# c7 ]set [local-reputation] of myself (local)
3 i! O0 g+ n/ a, Xend' r- m. m$ d6 K& i. o

, _' L/ b) m! A8 p" G) F- bto update-neighbor-total
; S& u2 a6 C' a. Q" H2 g9 R2 w& }
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], g( J. _. l0 _) a4 `5 o) Z
7 V2 d( m& Z" ?0 V" E' x6 m; m

# A6 l/ n" O# U* [1 s/ [end6 ?- ]# b. m, H7 b
: S4 ~" ^* H; D: F. J
to update-credibility-ijl * q& e; S7 g7 F; W
& p) E' Z6 p* Y% F
;;
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。
7 i0 n; u, Z. Alet l 0
9 }+ Q* D3 N) b$ {) L. F( `/ {while[ l < people ]- ~! n4 Y# s9 }7 G% e- y
;;
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
: ?8 M# H$ ]! t. z& b+ P0 }+ r[9 O" R" F# z5 S/ o: ^. V3 _
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ w1 s. F3 Q6 v8 _& V7 `. d2 N7 gif (trade-record-one-j-l-len > 3)
+ u3 D8 T8 u& @: ?[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
/ K! |7 x# Y3 i: {* ilet i 3
5 c; E" q. G# q: Wlet sum-time 0
' s9 P0 D% t2 h5 z  F; T$ B+ Jwhile[i < trade-record-one-len]
& o* E0 X1 e% X0 [7 z$ o) M3 L[
% ]4 Y- s( @: C$ X: Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, h7 i/ V) J1 nset i+ i1 J, ~7 F% ^3 p' r0 F4 ^8 g1 o
( i + 1)

% W* `0 T8 D4 k8 K]1 b/ s& \2 c% f$ u
let credibility-i-j-l 0, R1 t& N- x& k
;;i
评价(jjl的评价)/ U- s4 i$ e# `2 C: t, ?
let j 3
6 ^/ B) ^. d2 elet k 4
, P9 t! b% H% u$ z5 O+ }' qwhile[j < trade-record-one-len]
) N, i7 I' `; V( {* q[( |) C* w; o. Z" P* X6 x# x6 H
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3 r2 o1 }# }/ |0 i, J. ?
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: I, ^" I; Q; S+ ]1 D% A
set j  e# U* c# I1 K
( j + 1)
- D6 b) m( v) V. h1 C
]
* @3 a" |6 M0 [; h3 Vset [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 ))/ h2 v; t" g/ p9 ]4 v
) k1 t4 |2 ~& z% L& e
2 v9 Y7 B, h$ w# |
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 S- W. e3 X5 u( l2 g) l
;;
及时更新il的评价质量的评价( W+ U; G. b4 F3 j% t6 ]6 k
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) u% W( j5 A$ X# t. N  }; y2 _, F& L) eset l (l + 1)
. F- B7 D- G( \5 {" [% w& u6 E]
1 m3 k, A" B( Z+ F* @$ L- kend5 N) O( H3 p5 w# |: h/ P

9 t7 s- n4 H- L# l- @* dto update-credibility-list
3 z$ Q. C& Z& l) M  K6 i0 alet i 08 B7 m! @3 H$ F2 B, ^
while[i < people]
" O+ ^2 r3 _5 h6 G[* }* C' l# o% b; ~6 u& Z
let j 0  F# y" R: i; {) {' }$ [2 r0 \
let note 0- W0 o  `- K; ?" E4 w
let k 0' h  R$ g: E' L8 I( T$ Y. ^
;;
计作出过评价的邻居节点的数目
# Q  Q: ^# i# Q' N2 F& }1 [while[j < people]
1 L* x0 U) Q4 z2 b/ n7 T[
( b' S4 I) p. Y3 ~if (item j( [credibility] of turtle (i + 1)) != -1)
$ H* K* _) I2 |: p4 E- \;;
判断是否给本turtle的评价质量做出过评价的节点6 X/ ~* g+ A$ c7 v3 q# e" `
[set note (note + item j ([credibility]of turtle (i + 1)))
- Z' x- k4 Y- v7 z! U;;*(exp (-(people - 2)))/(people - 2))]

; Y# [) O3 G6 N9 {9 Mset k (k + 1)
9 C) N6 L  w6 o4 f6 _$ ~- ]2 T]
6 H$ R% X8 B4 wset j (j + 1)
' ]% R" ^3 n. r3 l]
7 R. H' F+ u8 g6 X6 l! _( _! vset note (note *(exp (- (1 / k)))/ k); A* _3 C+ X, s  S3 r& X+ \8 X5 i0 P
set credibility-list (replace-item i credibility-list note)
3 _4 L. _5 z! d& aset i (i + 1)+ U: X! m0 P- J& h1 p
]
! B9 A. J( R  G+ Cend" X9 n5 S7 F7 Q3 t1 @1 M% N

/ S* q- Y4 w: {: q' p: D' pto update-global-reputation-list  g4 r. Q5 y5 i0 F- N" |1 i9 \: d$ y
let j 08 Q5 Y& g4 p) O4 T7 ~
while[j < people]
5 t) A  J: T  X$ o[; h2 O% @5 Q" r; K3 S: i
let new 0
9 C4 E! K0 O- v5 S- y# R# d;;
暂存新的一个全局声誉
% z* j0 a% Q) i- e( Y& A; Elet i 0
/ w" G/ O) C& t) D) b/ a1 ~2 ]let sum-money 05 z2 Q: x5 E" c
let credibility-money 0
4 E! A# ]  Q% w! \& }3 f8 Swhile [i < people]
1 |' [' k* U) ]# P" O8 R+ ^/ |[
0 O; |! o3 g/ ?; t$ C# u# ]set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* I7 }' G: A. h+ S3 M; n- ~set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" Y8 Z% w; e' `* Q3 t6 O- M
set i (i + 1)/ m7 q  {' b4 l2 s
]
& _, m; {6 A4 X& ulet k 04 K& \5 L% J& o
let new1 0) u9 H0 f) s# g! z
while [k < people]
# r$ A$ B. _6 L3 }5 C) g[# }1 L6 K. A) _9 ]
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)' x! l$ O; Y3 A2 s5 Q7 m
set k (k + 1)
# z9 u0 U+ [8 p4 w' C]
" N2 o) @, u- Z9 E, f0 J* |* ]set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # n+ n/ L+ k8 R1 I
set global-reputation-list (replace-item j global-reputation-list new)
; T, ]9 `/ Z. z0 u$ ~1 Z6 I. e5 Pset j (j + 1)3 P! R! q" `7 J3 {& @4 ]  ]' P
]  }, @/ B& H# x/ P7 ^
end+ Z7 }, x6 X/ U6 S4 l

6 ^4 [' s; M7 a* G2 Y& q3 b0 n/ S7 @% b# D

8 X# \2 S. ]7 Z! L( |to get-color2 q: n; j/ o7 U8 N5 s4 E

# `6 D9 [, O, m1 C  ~! Rset color blue

( r8 u2 t: L. l7 e6 z; [  N2 p9 Mend
- [( q8 x& }3 H' ]' u" p& r! ~% c# u  f) N  @' p
to poll-class9 I8 S% P2 w2 N
end
7 E8 M5 b$ s" J: w5 C( r& u- X* W, W
to setup-plot1% h3 A3 N, t, F  i( u5 w$ b

6 Z4 R8 K! b7 P+ _# e1 |set-current-plot "Trends-of-Local-reputation"
% X( b5 Z, C& c3 b/ Z. O" `) e% y) w
2 y( @% M3 ], {; O
set-plot-x-range 0 xmax

% n5 i8 A4 O" n* _1 C. B7 a
6 v" G4 S. X, t. _! _7 qset-plot-y-range 0.0 ymax
2 W# O* X; d1 k$ r5 I/ Z* _
end6 ^. Q' ?3 j( D( }& ~4 |! l

1 J9 D. d4 q  Z. P5 \5 a! @to setup-plot2
' B$ C" g0 x# f# `, s
8 V& l0 i4 H3 n  k( I. Y  Nset-current-plot "Trends-of-global-reputation"
- V: @0 ?! J6 }

- G7 r" Z5 D8 c* }# J3 i# E1 b& {! hset-plot-x-range 0 xmax

  }6 h& o1 _, _5 q4 ~
7 y# {2 [' j- p- t& ?6 U. r4 hset-plot-y-range 0.0 ymax

# Z3 u7 V5 g& X1 N3 Lend
' w( Y# o0 {6 q$ O; o* k3 B6 L4 h7 W2 O/ ^, T6 O0 [6 U" O& h  c& ~
to setup-plot3
  Q. j. r1 f* u4 R* R" {( k1 I; c" S
set-current-plot "Trends-of-credibility"
' }" j4 b$ L# @2 K9 p/ b9 T
. H: w. C+ O1 `$ i
set-plot-x-range 0 xmax

# [# d" o- X' v2 ^3 m1 P4 I) S
4 \2 h4 a1 p* j/ \set-plot-y-range 0.0 ymax
5 \9 O6 m0 o- |/ _/ J0 \
end4 j1 |; p: c( L' b* V" c5 R

. S5 m+ a2 S. g7 g4 t& oto do-plots
& R( c5 c) w% a' Vset-current-plot "Trends-of-Local-reputation"
8 K7 h" m8 j# ~& g$ H2 w8 y9 Jset-current-plot-pen "Honest service"5 `+ ?4 C/ T' T
end$ @2 n) E9 t7 E# `& U
! J6 |% O) C$ ?4 h5 M& g0 ]; 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.
& y4 ^0 i" w  p8 |
- O/ |9 M0 |* P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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